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BIO-MEDICAL AND SURGICAL PLAZA JULY 2016 ROUFF …€¦MSS SP 69 - Pipe Hangers and Supports -...

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BIO-MEDICAL AND SURGICAL PLAZA JULY 2016 ROUFF ENGINEERING PROJECT # 16-143 Hangers and Supports for HVAC Piping and Equipment 15061 - 1 SECTION 15061 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT PART 1 GENERAL 1.1 SUMMARY A. Section Includes: 1. Pipe hangers and supports. 2. Hanger rods. 3. Inserts. 4. Flashing. 5. Equipment curbs. 6. Sleeves. 7. Mechanical sleeve seals. 8. Formed steel channel. 9. Firestopping relating to HVAC work. 10. Firestopping accessories. 11. Equipment bases and supports. 1.2 REFERENCES A. American Society of Mechanical Engineers: 1. ASME B31.1 - Power Piping. 2. ASME B31.5 - Refrigeration Piping. 3. ASME B31.9 - Building Services Piping. B. ASTM International: 1. ASTM E84 - Test Method for Surface Burning Characteristics of Building Materials. 2. ASTM E119 - Method for Fire Tests of Building Construction and Materials. 3. ASTM E814 - Test Method of Fire Tests of Through Penetration Firestops. 4. ASTM F708 - Standard Practice for Design and Installation of Rigid Pipe Hangers. 5. ASTM E1966 - Standard Test Method for Fire-Resistive Joint Systems. C. American Welding Society: 1. AWS D1.1 - Structural Welding Code - Steel. D. Manufacturers Standardization Society of the Valve and Fittings Industry: 1. MSS SP 58 - Pipe Hangers and Supports - Materials, Design and Manufacturer. 2. MSS SP 69 - Pipe Hangers and Supports - Selection and Application. 3. MSS SP 89 - Pipe Hangers and Supports - Fabrication and Installation Practices. E. Underwriters Laboratories Inc.: 1. UL 263 - Fire Tests of Building Construction and Materials. 2. UL 723 - Tests for Surface Burning Characteristics of Building Materials.
Transcript

BIO-MEDICAL AND SURGICAL PLAZA JULY 2016 ROUFF ENGINEERING PROJECT # 16-143

Hangers and Supports for HVAC Piping and Equipment 15061 - 1

SECTION 15061

HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Pipe hangers and supports. 2. Hanger rods. 3. Inserts. 4. Flashing. 5. Equipment curbs. 6. Sleeves. 7. Mechanical sleeve seals. 8. Formed steel channel. 9. Firestopping relating to HVAC work. 10. Firestopping accessories. 11. Equipment bases and supports.

1.2 REFERENCES

A. American Society of Mechanical Engineers: 1. ASME B31.1 - Power Piping. 2. ASME B31.5 - Refrigeration Piping. 3. ASME B31.9 - Building Services Piping.

B. ASTM International: 1. ASTM E84 - Test Method for Surface Burning Characteristics of Building

Materials. 2. ASTM E119 - Method for Fire Tests of Building Construction and Materials. 3. ASTM E814 - Test Method of Fire Tests of Through Penetration Firestops. 4. ASTM F708 - Standard Practice for Design and Installation of Rigid Pipe

Hangers. 5. ASTM E1966 - Standard Test Method for Fire-Resistive Joint Systems.

C. American Welding Society: 1. AWS D1.1 - Structural Welding Code - Steel.

D. Manufacturers Standardization Society of the Valve and Fittings Industry: 1. MSS SP 58 - Pipe Hangers and Supports - Materials, Design and Manufacturer. 2. MSS SP 69 - Pipe Hangers and Supports - Selection and Application. 3. MSS SP 89 - Pipe Hangers and Supports - Fabrication and Installation Practices.

E. Underwriters Laboratories Inc.: 1. UL 263 - Fire Tests of Building Construction and Materials. 2. UL 723 - Tests for Surface Burning Characteristics of Building Materials.

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3. UL 1479 - Fire Tests of Through-Penetration Firestops. 4. UL 2079 - Tests for Fire Resistance of Building Joint Systems. 5. UL - Fire Resistance Directory.

1.3 DEFINITIONS

A. Firestopping (Through-Penetration Protection System): Sealing or stuffing material or assembly placed in spaces between and penetrations through building materials to arrest movement of fire, smoke, heat, and hot gases through fire rated construction.

1.4 SYSTEM DESCRIPTION

A. Firestopping Materials: ASTM E119 ASTM E814 UL 263 UL 1479 to achieve fire ratings for adjacent construction, but not less than 1 hour fire rating. 1. Ratings may be 3-hours for firestopping in through-penetrations of 4-hour fire

rated assemblies unless otherwise required by applicable codes.

1.5 PERFORMANCE REQUIREMENTS

A. Firestopping: Conform to UL for fire resistance ratings and surface burning characteristics.

1.6 SUBMITTALS

A. Product Data: 1. Hangers and Supports: Submit manufacturers catalog data including load

capacity. 2. Firestopping: Submit data on product characteristics, performance and limitation

criteria.

B. Manufacturer's Installation Instructions: 1. Hangers and Supports: Submit special procedures and assembly of components. 2. Firestopping: Submit preparation and installation instructions.

C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.7 QUALITY ASSURANCE

A. Through Penetration Firestopping of Fire Rated Assemblies: UL 1479 or ASTM E814 with 0.10 inch water gage minimum positive pressure differential to achieve fire F-Ratings and temperature T-Ratings, but not less than 1-hour. 1. Wall Penetrations: Fire F-Ratings of adjacent construction, but not less than 1-

hour. 2. Floor and Roof Penetrations: Fire F-Ratings and temperature T-Ratings , but not

less than 1-hour. a. Floor Penetrations Within Wall Cavities: T-Rating is not required.

B. Through Penetration Firestopping of Non-Fire Rated Floor and Roof Assemblies: Materials to resist free passage of flame and products of combustion.

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1. Noncombustible Penetrating Items: Noncombustible materials for penetrating items connecting maximum of three stories.

2. Penetrating Items: Materials approved by authorities having jurisdiction for penetrating items connecting maximum of two stories.

C. Fire Resistant Joints in Fire Rated Floor, Roof, and Wall Assemblies: ASTM E1966 or UL 2079 to achieve fire resistant rating for assembly in which joint is installed.

D. Fire Resistant Joints Between Floor Slabs and Exterior Walls: ASTM E119 with 0.10 inch water gage minimum positive pressure differential to achieve fire resistant rating for floor assembly.

E. Surface Burning Characteristics: 25/450 flame spread/smoke developed index when tested in accordance with ASTM E84.

F. Perform Work in accordance with AWS D1.1 for welding hanger and support attachments to building structure.

1.8 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing Products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum 3 years documented experience approved by manufacturer.

1.9 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.10 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labeled with manufacturer's identification.

B. Protect from weather and construction traffic, dirt, water, chemical, and damage, by storing in original packaging.

1.11 ENVIRONMENTAL REQUIREMENTS

A. Do not apply firestopping materials when temperature of substrate material and ambient air is below 60 degrees F.

B. Maintain this minimum temperature before, during, and for minimum 3 days after installation of firestopping materials.

C. Provide ventilation in areas to receive solvent cured materials.

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1.12 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

1.13 WARRANTY

A. Furnish one year manufacturer warranty for pipe hangers and supports.

PART 2 PRODUCTS

2.1 PIPE HANGERS AND SUPPORTS

A. Manufacturers: 1. Carpenter & Paterson Inc. 2. Creative Systems Inc. 3. Flex-Weld, Inc. 4. Glope Pipe Hanger Products Inc. 5. Michigan Hanger Co. 6. Superior Valve Co.

B. Hydronic Piping: 1. Conform to ASME B31.9ASTM F708 MS SSP58 MSS SP69 MSS SP89. 2. Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Carbon steel, adjustable swivel, split

ring. 3. Hangers for Cold Pipe Sizes 2 inches and Larger: Carbon steel, adjustable, clevis. 4. Hangers for Hot Pipe Sizes 2 to 4 inches: Carbon steel, adjustable, clevis. 5. Hangers for Hot Pipe Sizes 6 inches and Larger: Adjustable steel yoke, cast iron

roll, double hanger. 6. Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger

rods. 7. Multiple or Trapeze Hangers for Hot Pipe Sizes 6 inches and Larger: Steel

channels with welded spacers and hanger rods, cast iron roll. 8. Vertical Support: Steel riser clamp. 9. Floor Support for Cold Pipe: Cast iron adjustable pipe saddle, lock nut, nipple,

floor flange, and concrete pier or steel support. 10. Floor Support for Hot Pipe Sizes 4 Inches and Smaller: Cast iron adjustable pipe

saddle, lock nut, nipple, floor flange, and concrete pier or steel support. 11. Floor Support for Hot Pipe Sizes 6 inches and Larger: Adjustable cast iron roll

and stand, steel screws, and concrete pier or steel support. 12. Copper Pipe Support: Copper-plated, carbon steel ring.

C. Steam and Steam Condensate Piping: 1. Conform to ASME B31.1 ASME B31.9 ASTM F708 MSS SP58 MSS SP69

MSS SP89. 2. Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Carbon steel, adjustable swivel, split

ring. 3. Hangers for Pipe Sizes 2 to 4 inches: Carbon steel, adjustable, clevis.

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4. Hangers for Pipe Sizes 6 inches and Larger: Adjustable steel yoke, cast iron roll, double hanger.

5. Multiple or Trapeze Hangers for Pipe Sizes 4 inches and Smaller: Steel channels with welded spacers and hanger rods.

6. Multiple or Trapeze Hangers for Pipe Sizes 6 inches and Larger: Steel channels with welded spacers and hanger rods; cast-iron roll and stand.

7. Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hooks. 8. Copper Pipe Support: Copper-plated carbon-steel ring.

D. Refrigerant Piping: 1. Conform to ASME B31.5 ASTM F708 MSS SP58 MSS SP69 MSS SP89. 2. Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Carbon steel, adjustable swivel, split

ring. 3. Hangers for Pipe Sizes 2 inches and Larger: Carbon steel, adjustable, clevis. 4. Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger

rods. 5. Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hook. 6. Wall Support for Pipe Sizes 4 inches and Larger: Welded steel bracket and

wrought steel clamp. 7. Vertical Support: Steel riser clamp. 8. Floor Support: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and

concrete pier or steel support. 9. Copper Pipe Support: Copper-plated carbon-steel ring.

2.2 ACCESSORIES

A. Hanger Rods: Mild steel threaded both ends, threaded on one end, or continuous threaded.

2.3 INSERTS

A. Inserts: Malleable iron case of steel shell and expander plug for threaded connection with lateral adjustment, top slot for reinforcing rods, lugs for attaching to forms; size inserts to suit threaded hanger rods.

2.4 FLASHING

A. Metal Flashing: 26 gage thick galvanized steel.

B. Metal Counterflashing: 22 gage thick galvanized steel.

C. Lead Flashing: 1. Waterproofing: 5 lb./sq. ft sheet lead. 2. Soundproofing: 1 lb./sq. ft sheet lead.

D. Flexible Flashing: 47 mil thick sheet compatible with roofing.

E. Caps: Steel, 22 gage minimum; 16 gage at fire resistant elements.

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2.5 EQUIPMENT CURBS

A. Manufacturers: 1. Equipment manufacturer’s curb

B. Fabrication: Welded 18 gage galvanized steel shell and base, mitered 3 inch cant, variable step to match roof insulation, 1-1/2 inch thick insulation, factory installed wood nailer.

2.6 SLEEVES

A. Sleeves for Pipes Through Non-fire Rated Floors: 18 gage thick galvanized steel.

B. Sleeves for Pipes Through Non-fire Rated Beams, Walls, Footings, and Potentially Wet Floors: Steel pipe or 18 gage thick galvanized steel.

C. Sleeves for Round Ductwork: Galvanized steel.

D. Sleeves for Rectangular Ductwork: Galvanized steel.

2.7 MECHANICAL SLEEVE SEALS

A. Manufacturers: 1. Thunderline Link-Seal, Inc. 2. NMP Corporation

B. Product Description: Modular mechanical type, consisting of interlocking synthetic rubber links shaped to continuously fill annular space between object and sleeve, connected with bolts and pressure plates causing rubber sealing elements to expand when tightened, providing watertight seal and electrical insulation.

2.8 FORMED STEEL CHANNEL

A. Manufacturers: 1. Allied Tube & Conduit Corp. 2. B-Line Systems 3. Midland Ross Corporation, Electrical Products Division 4. Unistrut Corp.

B. Product Description: Galvanized 12 gage thick steel. With holes 1-1/2 inches on center.

2.9 FIRESTOPPING

A. Manufacturers: 1. Dow Corning Corp. 2. Fire Trak Corp. 3. Hilti Corp. 4. International Protective Coating Corp. 5. 3M fire Protection Products

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6. Specified Technology, Inc.

B. Product Description: Different types of products by multiple manufacturers are acceptable as required to meet specified system description and performance requirements; provide only one type for each similar application. 1. Silicone Firestopping Elastomeric Firestopping: Singleor Multiple component

silicone elastomeric compound and compatible silicone sealant. 2. Foam Firestopping Compounds: Singleor Multiple component foam compound. 3. Formulated Firestopping Compound of Incombustible Fibers: Formulated

compound mixed with incombustible non-asbestos fibers. 4. Fiber Stuffing and Sealant Firestopping: Composite of mineral or ceramic fiber

stuffing insulation with silicone elastomer for smoke stopping. 5. Mechanical Firestopping Device with Fillers: Mechanical device with

incombustible fillers and silicone elastomer, covered with sheet stainless steel jacket, joined with collars, penetration sealed with flanged stops.

6. Intumescent Firestopping: Intumescent putty compound which expands on exposure to surface heat gain.

7. Firestop Pillows: Formed mineral fiber pillows.

2.10 FIRESTOPPING ACCESSORIES

A. Primer: Type recommended by firestopping manufacturer for specific substrate surfaces and suitable for required fire ratings.

B. Dam Material: Permanent: 1. Sheet metal.

C. Installation Accessories: Provide clips, collars, fasteners, temporary stops or dams, and other devices required to position and retain materials in place.

D. General: 1. Furnish UL listed products or products tested by independent testing laboratory. 2. Select products with rating not less than rating of wall or floor being penetrated.

E. Non-Rated Surfaces: 1. Stamped steel, chrome plated, hinged, split ring escutcheons or floor plates or

ceiling plates for covering openings in occupied areas where piping is exposed. 2. For exterior wall openings below grade, furnish mechanical sealing device to

continuously fill annular space between piping and cored opening or water-stop type wall sleeve.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify openings are ready to receive sleeves.

B. Verify openings are ready to receive firestopping.

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3.2 PREPARATION

A. Clean substrate surfaces of dirt, dust, grease, oil, loose material, or other matter affecting bond of firestopping material.

B. Remove incompatible materials affecting bond.

C. Install backing damming materials to arrest liquid material leakage.

D. Do not drill or cut structural members.

3.3 INSTALLATION - INSERTS

A. Install inserts for placement in concrete forms.

B. Install inserts for suspending hangers from reinforced concrete slabs and sides of reinforced concrete beams.

C. Provide hooked rod to concrete reinforcement section for inserts carrying pipe 4 inches and larger.

D. Where concrete slabs form finished ceiling, locate inserts flush with slab surface.

E. Where inserts are omitted, drill through concrete slab from below and provide through-bolt with recessed square steel plate and nut above flush with top of recessed into and grouted flush with slab.

3.4 INSTALLATION - PIPE HANGERS AND SUPPORTS

A. Install in accordance with ASME B31.1 ASME B31.5 ASME 31.9ASTM F708 MSS SP 58 MSS SP 69 MSS SP 89.

B. Support horizontal piping as scheduled.

C. Install hangers with minimum 1/2 inch space between finished covering and adjacent work.

D. Place hangers within 12 inches of each horizontal elbow.

E. Use hangers with 1-1/2 inch minimum vertical adjustment.

F. Support vertical piping at every floor.

G. Where piping is installed in parallel and at same elevation, provide multiple pipe or trapeze hangers.

H. Support riser piping independently of connected horizontal piping.

I. Provide copper plated hangers and supports for copper piping.

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J. Design hangers for pipe movement without disengagement of supported pipe.

K. Prime coat exposed steel hangers and supports. Hangers and supports located in crawl spaces, pipe shafts, and suspended ceiling spaces are not considered exposed.

L. Provide clearance in hangers and from structure and other equipment for installation of insulation.

3.5 INSTALLATION - EQUIPMENT BASES AND SUPPORTS

A. Provide housekeeping pads of concrete, minimum 4 inches thick and extending 6 inches beyond supported equipment.

B. Using templates furnished with equipment, install anchor bolts, and accessories for mounting and anchoring equipment.

C. Construct supports of steel members formed steel channel. Brace and fasten with flanges bolted to structure.

D. Provide rigid anchors for pipes after vibration isolation components are installed.

3.6 INSTALLATION - FLASHING

A. Provide flexible flashing and metal Counterflashing where piping and ductwork penetrate weather or waterproofed walls, floors, and roofs.

B. Provide acoustical lead flashing around ducts and pipes penetrating equipment rooms for sound control.

C. Provide curbs for roof installations 14 inches minimum high above roofing surface. Flash and counter-flash with sheet metal; seal watertight. Attach Counterflashing to equipment and lap base flashing on roof curbs. Flatten and solder joints.

D. Adjust storm collars tight to pipe with bolts; caulk around top edge. Use storm collars above roof jacks. Screw vertical flange section to face of curb.

3.7 INSTALLATION - SLEEVES

A. Exterior watertight entries: Seal with mechanical sleeve seals.

B. Set sleeves in position in forms. Provide reinforcing around sleeves.

C. Size sleeves large enough to allow for movement due to expansion and contraction. Provide for continuous insulation wrapping.

D. Extend sleeves through floors 1 inch above finished floor level. Caulk sleeves.

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E. Where piping or ductwork penetrates floor, ceiling, or wall, close off space between pipe or duct and adjacent work with stuffing or firestopping insulation and caulk airtight. Provide close fitting metal collar or escutcheon covers at both sides of penetration.

F. Install chrome plated steel escutcheons at finished surfaces.

3.8 INSTALLATION - FIRESTOPPING

A. Install material at fire rated construction perimeters and openings containing penetrating sleeves, piping, ductwork, and other items, requiring firestopping.

B. Apply primer where recommended by manufacturer for type of firestopping material and substrate involved, and as required for compliance with required fire ratings.

C. Apply firestopping material in sufficient thickness to achieve required fire and smoke rating, to uniform density and texture.

D. Place foamed material in layers to ensure homogenous density, filling cavities and spaces. Place sealant to completely seal junctions with adjacent dissimilar materials.

E. Place intumescent coating in sufficient coats to achieve rating required.

F. Remove dam material after firestopping material has cured.

G. Fire Rated Surface: 1. Seal opening at floor, wall, partition, ceiling, and roof as follows:

a. Install sleeve through opening and extending beyond minimum of 1 inch on both sides of building element.

b. Size sleeve allowing minimum of 1 inch void between sleeve and building element.

c. Pack void with backing material. d. Seal ends of sleeve with UL listed fire resistive silicone compound to

meet fire rating of structure penetrated. 2. Where conduit, wireway, trough penetrates fire rated surface, install firestopping

product in accordance with manufacturer's instructions.

H. Non-Rated Surfaces: 1. Seal opening through non-fire rated wall, partition, floor, ceiling, and roof

opening as follows: a. Install sleeve through opening and extending beyond minimum of 1 inch

on both sides of building element. b. Size sleeve allowing minimum of 1 inch void between sleeve and

building element. c. Install type of firestopping material recommended by manufacturer.

2. Install escutcheons floor plates or ceiling plates where conduit, penetrates non-fire rated surfaces in occupied spaces. Occupied spaces include rooms with finished ceilings and where penetration occurs below finished ceiling.

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3. Exterior wall openings below grade: Assemble rubber links of mechanical sealing device to size of piping and tighten in place, in accordance with manufacturer's instructions.

4. Interior partitions: Seal all pipe penetrations at clean rooms, laboratories, hospital spaces, computer rooms, telecommunication rooms and data rooms. Apply sealant to both sides of penetration to completely fill annular space between sleeve and conduit.

3.9 FIELD QUALITY CONTROL

A. Inspect installed firestopping for compliance with specifications and submitted schedule.

3.10 CLEANING

A. Clean adjacent surfaces of firestopping materials.

3.11 PROTECTION OF FINISHED WORK

A. Protect adjacent surfaces from damage by material installation.

3.12 SCHEDULES

A. Copper and Steel Pipe Hanger Spacing:

PIPE SIZE Inches

COPPER TUBING MAXIMUM HANGER SPACING Feet

STEEL PIPE MAXIMUM HANGER SPACING Feet

COPPER TUBING HANGER ROD DIAMETER Inches

STEEL PIPE HANGER ROD DIAMETER Inches

1/2 5 7 3/8 3/8

3/4 5 7 3/8 3/8

1 6 7 3/8 3/8

1-1/4 7 7 3/8 3/8

1-1/2 8 9 3/8 3/8

2 8 10 3/8 3/8

2-1/2 (Note 2) 9 11 1/2 1/2

3 10 12 1/2 1/2

4 12 14 1/2 5/8

5 13 16 1/2 5/8

6 14 17 5/8 3/4

8 16 19 3/4 3/4

10 18 22 3/4 7/8

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12 19 23 3/4 7/8

14 22 25 7/8 1

16 23 27 7/8 1

18 25 28 1 1

20 27 30 1 1-1/4

24 28 32 1-1/4 1-1/4

B. Plastic and Ductile Iron Pipe Hanger Spacing:

PIPE MATERIAL

MAXIMUM HANGER SPACING Feet

HANGER ROD DIAMETER Inches

ABS (All sizes) 4 3/8

FRP (All Sizes) 4 3/8

Ductile Iron (Note 2)

PVC (All Sizes) 4 3/8

C. Note 1:Refer to manufacturer’s recommendations for grooved end piping systems.

D. Note 2: 20 feet maximum spacing, minimum of one hanger for each pipe section close to joint behind bell. Provide hanger at each change of direction and each branch connection. For pipe sizes 6 inches and smaller, subjected to loadings other than weight of pipe and contents, limit span to maximum spacing for water service steel pipe.

END OF SECTION

BIO-MEDICAL AND SURGICAL PLAZA JULY 2016 ROUFF ENGINEERING PROJECT # 16-143

Identification for HVAC Piping and Equipment 15076 - 1

SECTION 15076

IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Nameplates. 2. Pipe markers. 3. Labels.

1.2 REFERENCES

A. American Society of Mechanical Engineers: 1. ASME A13.1 - Scheme for the Identification of Piping Systems.

1.3 SUBMITTALS

A. Product Data: Submit manufacturers catalog literature for each product required.

B. Manufacturer's Installation Instructions: Indicate installation instructions, special procedures, and installation.

C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of tagged valves; include valve tag numbers.

1.5 QUALITY ASSURANCE

A. Conform to ASME A13.1 for color scheme for identification of piping systems and accessories.

1.6 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience approved by manufacturer.

1.7 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

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1.8 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

PART 2 PRODUCTS

2.1 NAMEPLATES

A. Manufacturers: 1. Craftmark Identification Systems 2. Safety Sign Co. 3. Seton Identification Products

B. Product Description: Laminated three-layer plastic with engraved white letters on light contrasting background color.

2.2 PIPE MARKERS

A. Color and Lettering: Conform to ASME A13.1.

B. Plastic Pipe Markers: 1. Manufacturers:

a. Seton 2. Factory fabricated, flexible, semi-rigid plastic, preformed to fit around pipe or

pipe covering. Larger sizes may have maximum sheet size with spring fastener.

2.3 LABELS

A. Manufacturers: 1. Seton 2. Brady 3. Description: Polyester Laminated Mylar, size 1.9 x 0.75 inches, adhesive backed

with printed identification.

PART 3 EXECUTION

3.1 PREPARATION

A. Degrease and clean surfaces to receive adhesive for identification materials.

3.2 INSTALLATION

A. Install identifying devices after completion of coverings and painting.

B. Install plastic nameplates with corrosive-resistant mechanical fasteners, or adhesive.

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C. Install labels with sufficient adhesive for permanent adhesion and seal with clear lacquer. For unfinished canvas covering, apply paint primer before applying labels.

D. Install tags using corrosion resistant chain. Number tags consecutively by location.

E. Identify air handling units, pumps, heat transfer equipment, tanks, and water treatment devices with. Identify in-line pumps and other small devices with tags.

F. Identify control panels and major control components outside panels with plastic nameplates.

G. Identify valves in main and branch piping with tags.

H. Identify air terminal units and radiator valves with numbered tags.

I. Tag automatic controls, instruments, and relays. Key to control schematic.

J. Identify piping, concealed or exposed, with plastic tape pipe markers. Identify service, flow direction, and pressure. Install in clear view and align with axis of piping. Locate identification not to exceed 20 feet on straight runs including risers and drops, adjacent to each valve and tee, at each side of penetration of structure or enclosure, and at each obstruction.

END OF SECTION

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HVAC Insulation 15081 - 1

SECTION 15081

HVAC INSULATION

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. HVAC piping insulation, jackets and accessories. 2. HVAC equipment insulation, jackets and accessories. 3. HVAC ductwork insulation, jackets, and accessories.

1.2 REFERENCES

A. ASTM International: 1. ASTM A167 - Standard Specification for Stainless and Heat-Resisting

Chromium-Nickel Steel Plate, Sheet, and Strip. 2. ASTM B209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet

and Plate. 3. ASTM C195 - Standard Specification for Mineral Fiber Thermal Insulating

Cement. 4. ASTM C450 - Standard Practice for Prefabrication and Field Fabrication of

Thermal Insulating Fitting Covers for NPS Piping, Vessel Lagging, and Dished Head Segments.

5. ASTM C534 - Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form.

6. Insulation for Commercial and Industrial Applications. 7. ASTM C585 - Standard Practice for Inner and Outer Diameters of Rigid Thermal

Insulation for Nominal Sizes of Pipe and Tubing (NPS System). 8. ASTM C921 - Standard Practice for Determining the Properties of Jacketing

Materials for Thermal Insulation. 9. ASTM C1071 - Standard Specification for Thermal and Acoustical Insulation

(Glass Fiber, Duct Lining Material). 10. ASTM C1136 - Standard Specification for Flexible, Low Permeance Vapor

Retarders for Thermal Insulation. 11. ASTM C1290 - Standard Specification for Flexible Fibrous Glass Blanket

Insulation Used to Externally Insulate HVAC Ducts. 12. ASTM D1784 - Standard Specification for Rigid Poly (Vinyl Chloride) (PVC)

Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds. 13. ASTM E84 - Standard Test Method for Surface Burning Characteristics of

Building Materials. 14. ASTM E96 - Standard Test Methods for Water Vapor Transmission of Materials. 15. ASTM E162 - Standard Test Method for Surface Flammability of Materials

Using a Radiant Heat Energy Source.

B. Sheet Metal and Air Conditioning Contractors’: 1. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

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HVAC Insulation 15081 - 2

C. National Fire Protection Association: 1. NFPA 255 - Standard Method of Test of Surface Burning Characteristics of

Building Materials.

D. Underwriters Laboratories Inc.: 1. UL 723 - Tests for Surface Burning Characteristics of Building Materials.

1.3 SUBMITTALS

A. Product Data: Submit product description, thermal characteristics and list of materials and thickness for each service, and location.

B. Manufacturer's Installation Instructions: Submit manufacturers published literature indicating proper installation procedures.

C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.4 QUALITY ASSURANCE

A. Test pipe insulation for maximum flame spread index of 25 and maximum smoke developed index of not exceeding 50 in accordance with ASTM E84, UL 723, and NFPA 255.

B. Pipe insulation manufactured in accordance with ASTM C585 for inner and outer diameters.

C. Factory fabricated fitting covers manufactured in accordance with ASTM C450.

1.5 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Applicator: Company specializing in performing Work of this section with minimum three years documented experience approved by manufacturer.

1.6 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labeled with manufacturer's identification, including product density and thickness.

B. Protect insulation from weather and construction traffic, dirt, water, chemical, and damage, by storing in original wrapping.

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1.8 ENVIRONMENTAL REQUIREMENTS

A. Install insulation only when ambient temperature and humidity conditions are within range recommended by manufacturer.

B. Maintain temperature before, during, and after installation for minimum period of 24 hours.

1.9 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

1.10 WARRANTY

A. Furnish one year manufacturer warranty for manmade fiber.

PART 2 PRODUCTS

2.1 MANUFACTURER

A. Manufacturers for Glass Fiber and Mineral Fiber Insulation Products: 1. CertainTeed. 2. Knauf. 3. Johns Manville. 4. Owens-Corning.

B. Manufacturers for Closed Cell Elastomeric Insulation Products: 1. Aeroflex. Aerocell. 2. Armacell, LLC. Armaflex. 3. Nomaco. K-flex.

2.2 PIPE INSULATION

A. TYPE: ASTM C547, molded glass fiber pipe insulation. 1. Thermal Conductivity: 0.23 at 75 degrees F. 2. Operating Temperature Range: 0 to 850 degrees F. 3. Vapor Barrier Jacket: ASTM C1136, Type I, factory applied reinforced foil kraft

with self-sealing adhesive joints. 4. Jacket Temperature Limit: minus 20 to 150 degrees F.

B. TYPE: ASTM C534, Type I, flexible, closed cell elastomeric insulation, tubular. 1. Thermal Conductivity: 0.27 at 75 degrees F. 2. Operating Temperature Range: Range: Minus 70 to 180 degrees F.

C. TYPE: ASTM C534, Type I, flexible, closed cell elastomeric insulation, tubular. 1. Thermal Conductivity: 0.30 at 75 degrees F. 2. Maximum Service Temperature: 300 degrees F. 3. Operating Temperature Range: Range: Minus 58 to 300 degrees F.

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2.3 PIPE INSULATION JACKETS

A. PVC Plastic Pipe Jacket: 1. Product Description: ASTM D1784, One piece molded type fitting covers and

sheet material, off-white color. 2. Thickness: 30 mil. 3. Connections: Brush on welding adhesive.

B. Aluminum Pipe Jacket: 1. ASTM B209. 2. Thickness: 0.016 inch thick sheet. 3. Finish: Embossed. 4. Joining: Longitudinal slip joints and 2 inch laps. 5. Fittings: 0.016 inch thick die shaped fitting covers with factory attached

protective liner. 6. Metal Jacket Bands: 3/8 inch wide; 0.015 inch thick aluminum.

2.4 PIPE INSULATION ACCESSORIES

A. Vapor Retarder Lap Adhesive: Compatible with insulation.

B. Covering Adhesive Mastic: Compatible with insulation.

C. Piping 1-1/2 inches diameter and smaller: Galvanized steel insulation protection shield. MSS SP-69, Type 40. Length: Based on pipe size and insulation thickness.

D. Piping 2 inches diameter and larger: Non-compressible insert. Inserts length: not less than 6 inches long, matching thickness and contour of adjoining insulation.

E. Insulating Cement: ASTM C195; hydraulic setting on mineral wool.

F. Adhesives: Compatible with insulation.

2.5 DUCTWORK INSULATION

A. See Sheet Specifications

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify piping, equipment and ductwork has been tested before applying insulation materials.

B. Verify surfaces are clean and dry, with foreign material removed.

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3.2 INSTALLATION - PIPING SYSTEMS

A. Piping Exposed to View in Finished Spaces: Locate insulation and cover seams in least visible locations.

B. Continue insulation through penetrations of building assemblies or portions of assemblies having fire resistance rating of one hour or less. Provide intumescent firestopping when continuing insulation through assembly. Finish at supports, protrusions, and interruptions. Refer to Section 07 84 00 for penetrations of assemblies with fire resistance rating greater than one hour.

C. Piping Systems Conveying Fluids Below Ambient Temperature: 1. Insulate entire system including fittings, valves, unions, flanges, strainers,

flexible connections, and expansion joints. 2. Furnish factory-applied or field-applied vapor retarder jackets. Secure factory-

applied jackets with pressure sensitive adhesive self-sealing longitudinal laps and butt strips. Secure field-applied jackets with outward clinch expanding staples and seal staple penetrations with vapor retarder mastic.

3. Insulate fittings, joints, and valves with molded insulation of like material and thickness as adjacent pipe. Finish with glass cloth and vapor retarder adhesive or PVC fitting covers.

D. Hot Piping Systems less than 140 degrees F: 1. Furnish factory-applied or field-applied standard jackets. Secure with outward

clinch expanding staples or pressure sensitive adhesive system on standard factory-applied jacket and butt strips or both.

2. Insulate fittings, joints, and valves with insulation of like material and thickness as adjoining pipe. Finish with glass cloth and adhesive or PVC fitting covers.

3. Do not insulate unions and flanges at equipment, but bevel and seal ends of insulation at such locations.

E. Hot Piping Systems greater than 140 degrees F: 1. Furnish factory-applied or field-applied standard jackets. Secure with outward

clinch expanding staples or pressure sensitive adhesive system on standard factory-applied jacket and butt strips or both.

2. Insulate fittings, joints, and valves with insulation of like material and thickness as adjoining pipe. Finish with glass cloth and adhesive or PVC fitting covers.

3. Insulate flanges and unions at equipment.

F. Inserts and Shields: 1. Piping 1-1/2 inches Diameter and Smaller: Install galvanized steel shield between

pipe hanger and insulation. 2. Piping 2 inches Diameter and Larger: Install insert between support shield and

piping and under finish jacket. a. Insert Configuration: Minimum 6 inches long, of thickness and contour

matching adjoining insulation; may be factory fabricated. b. Insert Material: Compression resistant insulating material suitable for

planned temperature range and service.

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HVAC Insulation 15081 - 6

3. Piping Supported by Roller Type Pipe Hangers: Install galvanized steel shield between roller and inserts.

G. Insulation Terminating Points: 1. Coil Branch Piping 1 inch and Smaller: Terminate hot water piping at union

upstream of the coil control valve. 2. Chilled Water Coil Branch Piping: Insulate chilled water piping and associated

components up to coil connection. 3. Condensate Piping: Insulate entire piping system and components to prevent

condensation.

H. Closed Cell Elastomeric Insulation: 1. Push insulation on to piping. 2. Miter joints at elbows. 3. Seal seams and butt joints with manufacturer’s recommended adhesive. 4. When application requires multiple layers, apply with joints staggered. 5. Insulate fittings and valves with insulation of like material and thickness as

adjacent pipe.

I. High Temperature Pipe Insulation: 1. Install in multiple layers to meet thickness scheduled. 2. Attach each layer with bands. Secure first layer with bands before installing next

layer. 3. Stagger joints between layers. 4. Finish with canvas jacket sized for finish painting.

J. Pipe Exposed in Mechanical Equipment Rooms or Finished Spaces (less than 10 feet above finished floor): Finish with PVC jacket and fitting covers.

K. Piping Exterior to Building: Provide vapor retarder jacket. Insulate fittings, joints, and valves with insulation of like material and thickness as adjoining pipe, and finish with glass mesh reinforced vapor retarder cement. Cover with aluminum jacket with seams located at 3 or 9 o’clock position on side of horizontal piping with overlap facing down to shed water or on bottom side of horizontal piping.

3.3 INSTALLATION - EQUIPMENT

A. Factory Insulated Equipment: Do not insulate.

B. Exposed Equipment: Locate insulation and cover seams in least visible locations.

C. Fill joints, cracks, seams, and depressions with bedding compound to form smooth surface. On cold equipment, use vapor retarder cement.

D. Equipment Containing Fluids Below Ambient Temperature: 1. Insulate entire equipment surfaces. 2. Apply insulation close to equipment by grooving, scoring, and beveling

insulation. Fasten insulation to equipment with studs, pins, clips, adhesive, wires, or bands.

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3. Furnish factory-applied or field-applied vapor retarder jackets. Secure factory-applied jackets with pressure sensitive adhesive self-sealing longitudinal laps and butt strips. Secure field-applied jackets with outward clinch expanding staples and seal staple penetrations with vapor retarder mastic.

4. Finish insulation at supports, protrusions, and interruptions.

E. Equipment Containing Fluids 140 degrees F Or Less: 1. Do not insulate flanges and unions, but bevel and seal ends of insulation. 2. Install insulation with factory-applied or field applied jackets, with or without

vapor barrier. Finish with glass cloth and adhesive. 3. Finish insulation at supports, protrusions, and interruptions.

F. Equipment Containing Fluids Over 140 degrees F: 1. Insulate flanges and unions with removable sections and jackets. 2. Install insulation with factory-applied or field applied jackets, with or without

vapor barrier. Finish with glass cloth and adhesive. 3. Finish insulation at supports, protrusions, and interruptions.

G. Equipment in Mechanical Equipment Rooms or Finished Spaces: Finish with canvas jacket sized for finish painting.

H. Equipment Located Exterior to Building: Install vapor barrier jacket or finish with glass mesh reinforced vapor barrier cement. Cover with aluminum jacket with seams located on bottom side of horizontal equipment.

I. Nameplates and ASME Stamps: Bevel and seal insulation around; do not cover with insulation.

J. Equipment Requiring Access for Maintenance, Repair, or Cleaning: Install insulation for easy removal and replacement without damage.

3.4 INSTALLATION - DUCTWORK SYSTEMS

A. Duct dimensions indicated on Drawings are finished inside dimensions.

B. Insulated ductwork conveying air below ambient temperature: 1. Provide insulation with vapor retarder jackets. 2. Finish with tape and vapor retarder jacket. 3. Continue insulation through walls, sleeves, hangers, and other duct penetrations. 4. Insulate entire system including fittings, joints, flanges, fire dampers, flexible

connections, and expansion joints.

C. Insulated ductwork conveying air above ambient temperature: 1. Provide with or without standard vapor retarder jacket. 2. Insulate fittings and joints. Where service access is required, bevel and seal ends

of insulation.

D. Ductwork Exposed in Mechanical Equipment Rooms or Finished Spaces (below 10 feet above finished floor): Finish with canvas jacket sized for finish painting.

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E. External Glass Fiber Duct Insulation: 1. Secure insulation with vapor retarder with seal jacket joints with vapor retarder

adhesive or tape to match jacket. 2. Secure insulation without vapor retarder with staples, tape, or wires. 3. Install without sag on underside of ductwork. Use adhesive or mechanical

fasteners where necessary to prevent sagging. Lift ductwork off trapeze hangers and insert spacers.

4. Seal vapor retarder penetrations by mechanical fasteners with vapor retarder adhesive.

5. Stop and point insulation around access doors and damper operators to allow operation without disturbing wrapping.

F. Duct and Plenum Liner: 1. Adhere insulation with adhesive for 100 percent coverage. 2. Secure insulation with mechanical liner fasteners. Comply with SMACNA

Standards for spacing. 3. Seal and smooth joints and all edges. Seal and coat transverse joints. 4. Seal liner surface penetrations with adhesive. 5. Cut insulation for tight overlapped corner joints. Support top pieces of liner at

edges with side pieces.

G. Ducts Exterior to Building: 1. Install insulation according to external duct insulation paragraph above. 2. Provide external insulation with vapor retarder jacket. Cover with outdoor jacket

finished with caulked aluminum jacket with seams located on bottom side of horizontal duct section].

3.5 SCHEDULES

A. Cooling Services Piping Insulation Schedule:

PIPING SYSTEM

INSULATION

TYPE

PIPE SIZE

INSULATION

THICKNESS

inches

Chilled Water Supply and Return 40 to 60 degrees F

Fiberglass 1-1/4 inches and smaller

1-1/2 inches inch and larger

1.5

1.5

Condensate Piping from Cooling Coils

Fiberglass All sizes 1.0

B. Heating Services Piping Insulation Schedule:

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HVAC Insulation 15081 - 9

PIPING SYSTEM

INSULATION

TYPE

PIPE SIZE

INSULATION

THICKNESS

inches

Heating Water Supply and Return 105 to 140 degrees F

Fiberglass 1-1/4 inches and smaller

1-1/2 inches and larger

1.0

1.0

Heating Water Supply and Return 141 to 200 degrees F

Fiberglass 3 inches and smaller

4 inches and larger

1.0

1.0

Low Pressure Steam Supply up to 15 psi [up to 250 degrees F]

1-1/4 inches and smaller

1-1/2 inches and larger

1.5

2.0

Humidifier Drain Piping All sizes 1

C. Ductwork Insulation Schedule:

DUCTWORK SYSTEM

INSULATION

TYPE

INSULATION

THICKNESS

inches

Outside Air Intake 1.5

Supply Ducts (externally insulated) Thickness indicated is installed thickness.

1.5

Return Ducts (externally insulated) Thickness indicated is installed thickness.

1.5

Supply Air, Return Air, Exhaust Air (exterior to building on roof) 3.0

Exhaust Ducts Within 10 feet of Exterior Openings Thickness indicated is installed thickness.

1.5

Exhaust Ducts Exposed to Outdoor Air 3.0

Transfer Air Ducts (externally insulated) 1.5

END OF SECTION

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General-Duty Valves for HVAC Piping 15111 - 1

SECTION 15111

GENERAL-DUTY VALVES FOR HVAC PIPING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Gate valves. 2. Globe valves. 3. Ball valves. 4. Butterfly valves. 5. Check valves.

1.2 REFERENCES

A. ASTM International: 1. ASTM A216/A216M - Standard Specification for Steel Castings, Carbon,

Suitable for Fusion Welding, for High-Temperature Service.

B. Manufacturers Standardization Society of the Valve and Fittings Industry: 1. MSS SP 67 - Butterfly Valves. 2. MSS SP 70 - Cast Iron Gate Valves, Flanged and Threaded Ends. 3. MSS SP 71 - Cast Iron Swing Check Valves, Flanged and Threaded Ends. 4. MSS SP 78 - Cast Iron Plug Valves, Flanged and Threaded Ends. 5. MSS SP 80 - Bronze Gate, Globe, Angle and Check Valves. 6. MSS SP 85 - Cast Iron Globe & Angle Valves, Flanged and Threaded. 7. MSS SP 110 - Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and

Flared Ends.

1.3 SUBMITTALS

A. Product Data: Submit manufacturers catalog information with valve data and ratings for each service.

B. Manufacturer's Installation Instructions: Submit hanging and support methods, joining procedures.

C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of valves.

B. Operation and Maintenance Data: Submit installation instructions, spare parts lists, exploded assembly views.

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1.5 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing Products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing work of this section with minimum 3 years documented experience.

1.6 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Accept valves on site in shipping containers with labeling in place. Inspect for damage.

B. Provide temporary protective coating on cast iron and steel valves.

1.8 ENVIRONMENTAL REQUIREMENTS

A. Do not install valves underground when bedding is wet or frozen.

1.9 WARRANTY

A. Furnish one year manufacturer warranty for valves excluding packing.

1.10 EXTRA MATERIALS

A. Furnish [two] packing kits for each size valve.

PART 2 PRODUCTS

2.1 GATE VALVES

A. Manufacturers: 1. Crane Valve, North America 2. Hammond Valve 3. Milwaukee Valve Company 4. NIBCO, Inc. 5. Stockham Valves & Fittings

B. 2 inches and Smaller: MSS SP 80, Class 125 Class 150, bronze body, bronze trim, threaded union bonnet, non-rising rising stem, hand-wheel, inside screw with back-seating stem, solid split wedge disc, alloy seat rings, solder or threaded ends.

C. 2-1/2 inches and Larger: MSS SP 70, Class 125, cast iron body, bronze trim, bolted bonnet, rising non-rising stem, hand-wheel, outside screw and yoke, solid wedge disc with bronze seat rings, flanged ends.

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2.2 GLOBE VALVES

A. Manufacturers: 1. Crane Valve, North America 2. Hammond Valve 3. Milwaukee Valve Company 4. NIBCO, Inc. 5. Stockham Valves & Fittings

B. 2 inches and Smaller: MSS SP 80, Class 125 Class 150, bronze body, bronze trim, threaded union bonnet, hand wheel, Buna-N composition disc, solder or threaded ends.

C. 2-1/2 inches and Larger: MSS SP 85, Class 125, cast iron body, bronze trim, hand wheel, outside screw and yoke, flanged ends.

2.3 BALL VALVES

A. Manufacturers: 1. Crane Valve, North America 2. Hammond Valve 3. Milwaukee Valve Company 4. NIBCO, Inc. 5. Stockham Valves & Fittings

B. 2 inches and larger: MSS SP 110, 400 psi WOG 600 psi WOG, one piece bronze body, chrome plated brass ball, full port, teflon seats, blow-out proof stem, solder or threaded ends, extended lever handle when insulated.

C. 2 inches and Smaller: MSS SP 110, Class 150, bronze, two piece body, type 316 stainless steel ball, full port, teflon seats, blow-out proof stem, solder or threaded ends, extended lever handle with balancing stops.

D. 1/4 inch to 1 inch: MSS SP 110, Class 125, two piece, threaded ends, bronze body, chrome plated bronze ball, reinforced teflon seats, blow-out proof stem, lever handle, UL 842 listed for flammable liquids and LPG, full port.

2.4 BUTTERFLY VALVES

A. Manufacturers: 1. Crane Valve, North America 2. Hammond Valve 3. Milwaukee Valve Company 4. NIBCO, Inc. 5. Stockham Valves & Fittings

B. 2-1/2 inches and Larger: MSS SP 67, Class 150 Class 200 Class 250. 1. Body: Cast or ductile iron, wafer lug ends, stainless steel stem, extended neck. 2. Disc: stainless steel. 3. Seat: Resilient replaceable Buna N.

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General-Duty Valves for HVAC Piping 15111 - 4

4. Handle and Operator: 10 position lever handle.

2.5 CHECK VALVES

A. Horizontal Swing Check Valves: 1. Manufacturers:

a. Crane Valve, North America b. Hammond Valve c. Milwaukee Valve Company d. NIBCO, Inc. e. Stockham Valves & Fittings f. Substitutions: Section 01 60 00 - Product Requirements

2. 2 inches and Smaller: MSS SP 80, Class 150, bronze body and cap, bronze seat, Buna-N disc, solder o rthreaded ends.

3. 2-1/2 inches and Larger: MSS SP 71, Class 125, cast iron body, bolted cap, bronze or cast iron disc, flanged ends.

B. Spring Loaded Check Valves: 1. Manufacturers:

a. Crane Valve, North America b. Hammond Valve c. Milwaukee Valve Company d. NIBCO, Inc. e. Stockham Valves & Fittings

2. 2 inches and Smaller: MSS SP 80, Class 250, bronze body, in-line spring lift check, silent closing, Buna-N disc, integral seat, solder or threaded ends.

3. 2-1/2 inches and Larger:MSS SP 71, Class 125, globe style, cast iron body, bronze seat, center guided bronze disc, stainless steel spring and screws, flanged ends.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify piping system is ready for valve installation.

3.2 INSTALLATION

A. Install valves with stems upright or horizontal, not inverted.

B. Install brass male adapters each side of valves in copper piped system. Solder adapters to pipe.

C. Install 3/4 inch ball valves with cap for drains at main shut-off valves, low points of piping, bases of vertical risers, and at equipment.

D. Install valves with clearance for installation of insulation and allowing access.

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E. Provide access where valves and fittings are not accessible.

3.3 VALVE APPLICATIONS

A. Install shutoff and drain valves at locations indicated on Drawings in accordance with this Section.

B. Install ball butterfly or gate valves for shut-off and to isolate equipment, part of systems, or vertical risers.

C. Install ball butterfly or globe valves for throttling, bypass, or manual flow control services.

D. Install spring loaded check valves on discharge of water pumps.

E. Install lug end butterfly valves adjacent to equipment when functioning to isolate equipment.

F. Install ball butterfly and gate valves in chilled and condenser water systems for shut-off service.

G. Install butterfly valves in chilled and condenser water systems interchangeably with gate and globe valves.

H. Install ball and butterfly valves in chilled and condenser water systems for throttling service.

END OF SECTION

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Expansion Fittings and Loops for HVAC Piping 15127 - 1

SECTION 15127

EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Flexible pipe connectors. 2. Swivel joints. 3. Pipe anchors.

1.2 REFERENCES

A. American Society of Mechanical Engineers: 1. ASME B31.1 - Power Piping. 2. ASME B31.5 - Refrigeration Piping. 3. ASME B31.9 - Building Services Piping. 4. ASME Section IX - Boiler and Pressure Vessel Code - Welding and Brazing

Qualifications.

B. American Welding Society: 1. AWS D1.1 - Structural Welding Code - Steel.

1.3 DESIGN REQUIREMENTS

A. Provide structural work and equipment required for expansion and contraction of piping. Verify anchors, guides, and expansion joints provide and adequately protect system.

B. Expansion Compensation Design Criteria: 1. Installation Temperature: 50 degrees F. 2. Hot Water Heating System Temperature: 210 degrees F. 3. Safety Factor: 30 percent.

1.4 SUBMITTALS

A. Product Data: 1. Flexible Pipe Connectors: Indicate maximum temperature and pressure rating,

face-to-face length, live length, hose wall thickness, hose convolutions per foot and per assembly, fundamental frequency of assembly, braid structure, and total number of wires in braid.

2. Expansion Joints: Indicate maximum temperature and pressure rating, and maximum expansion compensation.

B. Manufacturer's Installation Instructions: Submit special procedures.

C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

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Expansion Fittings and Loops for HVAC Piping 15127 - 2

D. Welders’ Certificate: Include welders’ certification of compliance with ASME Section IX. AWS D1.1.

1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of flexible pipe connectors, expansion joints, anchors, and guides.

B. Operation and Maintenance Data: Submit adjustment instructions.

1.6 QUALITY ASSURANCE

A. Perform Work in accordance with ASME B31.1 ASME B31.5 ASME B31.9 code for installation of piping systems and ASME Section IX for welding materials and procedures.

B. Maintain one copy of each document on site.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

1.8 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Accept expansion joints on site in factory packing with shipping bars and positioning devices intact. Inspect for damage.

B. Protect equipment from exposure by leaving factory coverings, pipe end protection, and packaging in place until installation.

1.10 WARRANTY

A. Furnish one year manufacturer warranty for leak free performance of packed expansion joints.

PART 2 PRODUCTS

2.1 FLEXIBLE PIPE CONNECTORS

A. Steel Piping:

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Expansion Fittings and Loops for HVAC Piping 15127 - 3

1. Inner Hose: Stainless Steel. 2. Exterior Sleeve: Double braided stainless steel. 3. Pressure Rating: 125 psig WSP and 450 degrees F 200 psig WOG and 250

degrees F psig at 70 degrees F 4. Joint: Flanged Threaded with Union Welded As specified for pipe joints. 5. Size: Use pipe-sized units. 6. Maximum offset: 3/4 inch 1 inch on each side of installed center line.

B. Copper Piping: 1. Inner Hose: Bronze. 2. Exterior Sleeve: Braided bronze. 3. Pressure Rating: 125 psig WSP and 450 degrees F 200 psig WOG and 250

degrees F psig at 70 degrees F. 4. Joint: Flanged Threaded with Union Soldered As specified for pipe joints. 5. Size: Use pipe sized units. 6. Maximum offset: 3/4 inch 1 inch on each side of installed center line.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install Work in accordance with ASME B31.1 ASME B31.5 ASME B31.9.

B. Install flexible pipe connectors on pipes connected to equipment supported by vibration isolation.

C. Install flexible connectors at right angles to displacement. Install one end immediately adjacent to isolated equipment and anchor other end. Install in horizontal plane unless indicated otherwise.

D. Rigidly anchor pipe to building structure. Provide pipe guides to direct movement only along axis of pipe. Erect piping so strain and weight is not on cast connections or apparatus.

E. Provide support and anchors for controlling expansion and contraction of piping. Provide loops, pipe offsets, and swing joints, or expansion joints where required as indicated on Drawings

F. Provide grooved piping systems with minimum one joint per inch pipe diameter instead of flexible connector supported by vibration isolation. Grooved piping systems need not be anchored.

3.2 MANUFACTURER'S FIELD SERVICES

A. Furnish inspection services by flexible pipe manufacturer's representative for final installation and certify installation is in accordance with manufacturer's recommendations and connectors are performing satisfactorily.

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END OF SECTION

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Hydronic Piping 15180 - 1

SECTION 15180

HYDRONIC PIPING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Chilled water piping, above grade. 2. Equipment drains and over flows. 3. Unions and flanges. 4. Pipe hangers and supports. 5. Valves.

1.2 REFERENCES

A. American Society of Mechanical Engineers: 1. ASME B16.3 - Malleable Iron Threaded Fittings. 2. ASME B16.4 - Gray Iron Threaded Fittings. 3. ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings. 4. ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure

Fittings. 5. ASME B31.1 - Power Piping. 6. ASME B31.9 - Building Services Piping. 7. ASME Section IX - Boiler and Pressure Vessel Code - Welding and Brazing

Qualifications.

B. ASTM International: 1. ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot-

Dipped, Zinc-Coated, Welded and Seamless. 2. ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought

Carbon Steel and Alloy Steel for Moderate and High Temperature Service. 3. ASTM A395/A395M - Standard Specification for Ferritic Ductile Iron Pressure-

Retaining Castings for Use at Elevated Temperatures. 4. ASTM A536 - Standard Specification for Ductile Iron Castings. 5. ASTM B32 - Standard Specification for Solder Metal. 6. ASTM B88 - Standard Specification for Seamless Copper Water Tube. 7. ASTM B584 - Standard Specification for Copper Alloy Sand Castings for

General Applications. 8. ASTM D1784 - Standard Specification for Rigid Poly (Vinyl Chloride) (PVC)

Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds. 9. ASTM D1785 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic

Pipe, Schedules 40, 80, and 120. 10. ASTM D2235 - Standard Specification for Solvent Cement for Acrylonitrile-

Butadiene-Styrene (ABS) Plastic Pipe and Fittings. 11. ASTM D2241 - Standard Specification for Poly (Vinyl Chloride) (PVC)

Pressure-Rated Pipe (SDR Series).

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Hydronic Piping 15180 - 2

12. ASTM D2310 - Standard Classification for Machine-Made "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe.

13. ASTM D2464 - Standard Specification for Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80.

14. ASTM D2466 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

15. ASTM D2467 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80.

16. ASTM D2564 - Standard Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems.

17. ASTM D2661 - Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe and Fittings.

18. ASTM D2680 - Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) and Poly (Vinyl Chloride) (PVC) Composite Sewer Piping.

19. ASTM D2751 - Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) Sewer Pipe and Fittings.

20. ASTM D2846/D2846M - Standard Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems.

21. ASTM D2855 - Standard Practice for Making Solvent-Cemented Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings.

22. ASTM D3309 - Standard Specification for Polybutylene (PB) Plastic Hot- and Cold-Water Distribution Systems.

23. ASTM F437 - Standard Specification for Threaded Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80.

24. ASTM F439 - Standard Specification for Socket-Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80.

25. ASTM F441/F441M - Standard Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80.

26. ASTM F493 - Standard Specification for Solvent Cements for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe and Fittings.

27. ASTM F708 - Standard Practice for Design and Installation of Rigid Pipe Hangers.

28. ASTM F845 - Standard Specification for Plastic Insert Fittings for Polybutylene (PB) Tubing.

29. ASTM F876 - Standard Specification for Crosslinked Polyethylene (PEX) Tubing.

30. ASTM F877 - Standard Specification for Crosslinked Polyethylene (PEX) Plastic Hot-and Cold-Water Distribution Systems.

31. ASTM F1476 - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications.

C. American Welding Society: 1. AWS A5.8 - Specification for Filler Metals for Brazing and Braze Welding. 2. AWS D1.1 - Structural Welding Code - Steel.

D. American Water Works Association: 1. AWWA C105 - American National Standard for Polyethylene Encasement for

Ductile-Iron Pipe Systems.

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Hydronic Piping 15180 - 3

2. AWWA C110 - American National Standard for Ductile-Iron and Grey-Iron Fittings, 3 in. through 48 in. (75 mm through 1200 mm), for Water and Other Liquids.

3. AWWA C111 - American National Standard for Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.

4. AWWA C151 - American National Standard for Ductile-Iron Pipe, Centrifugally Cast, for Water.

E. Manufacturers Standardization Society of the Valve and Fittings Industry: 1. MSS SP 58 - Pipe Hangers and Supports - Materials, Design and Manufacturer. 2. MSS SP 67 - Butterfly Valves. 3. MSS SP 69 - Pipe Hangers and Supports - Selection and Application. 4. MSS SP 70 - Cast Iron Gate Valves, Flanged and Threaded Ends. 5. MSS SP 71 - Cast Iron Swing Check Valves, Flanged and Threaded Ends. 6. MSS SP 78 - Cast Iron Plug Valves, Flanged and Threaded Ends. 7. MSS SP 80 - Bronze Gate, Globe, Angle and Check Valves. 8. MSS SP 85 - Cast Iron Globe & Angle Valves, Flanged and Threaded. 9. MSS SP 89 - Pipe Hangers and Supports - Fabrication and Installation Practices. 10. MSS SP 110 - Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and

Flared Ends.

1.3 SYSTEM DESCRIPTION

A. Where more than one piping system material is specified, provide compatible system components and joints. Use non-conducting dielectric connections whenever jointing dissimilar metals in open systems.

B. Provide flanges, union, and couplings at locations requiring servicing. Use unions, flanges, and couplings downstream of valves and at equipment or apparatus connections. Do not use direct welded or threaded connections to valves, equipment or other apparatus.

C. Provide pipe hangers and supports in accordance with ASME B31.1, ASME B31.9, ASTM F708, MSS SP 58, MSS SP 69, and MSS SP 89.

D. Use gate ball or butterfly valves for shut-off and to isolate equipment, part of systems, or vertical risers.

E. Use globe ball or butterfly valves for throttling, bypass, or manual flow control services.

F. Use spring loaded check valves on discharge of hot water chilled water condenser water pumps.

G. Use plug valves for throttling service. Use non-lubricated plug valves only when shut-off or isolating valves are also provided.

H. Use only butterfly valves in chilled and condenser water systems for throttling and isolation service.

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Hydronic Piping 15180 - 4

I. Use lug end butterfly valves to isolate equipment.

J. Use 3/4 inch ball valves with cap for drains at main shut-off valves, low points of piping, bases of vertical risers, and at equipment.

K. Flexible Connectors: Use at or near pumps compressors motor driven equipment where piping configuration does not absorb vibration.

1.4 SUBMITTALS

A. Product Data: 1. Piping: Submit data on pipe materials, fittings, and accessories. Submit

manufacturers catalog information. 2. Valves: Submit manufacturers catalog information with valve data and ratings for

each service. 3. Hangers and Supports: Submit manufacturers catalog information including load

capacity.

B. Test Reports: Indicate results of piping system pressure test.

C. Manufacturer's Installation Instructions: Submit hanging and support methods, joining procedures and isolation.

D. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

E. Welders’ Certificate: Include welders’ certification of compliance with ASME Section IX. AWS D1.1.

1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of valves, equipment and accessories.

B. Operation and Maintenance Data: Submit instructions for installation and changing components, spare parts lists, exploded assembly views.

1.6 QUALITY ASSURANCE

A. Perform Work in accordance with ASME B31.1 ASME B31.9 code for installation of piping systems and ASME Section IX for welding materials and procedures.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Fabricator or Installer: Company specializing in performing Work of this section with minimum three years documented experience.

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1.8 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Accept valves on site in shipping containers with labeling in place. Inspect for damage.

B. Provide temporary end caps and closures on piping and fittings. Maintain in place until installation.

C. Protect piping systems from entry of foreign materials by temporary covers, completing sections of the Work, and isolating parts of completed system.

1.10 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

1.11 WARRANTY

A. Furnish one year manufacturer warranty for valves excluding packing.

PART 2 PRODUCTS

2.1 CHILLED WATER PIPING, ABOVE GROUND

A. Steel Pipe: ASTM A53/A53M, Schedule 40, 0.375 inch wall for sizes 12 inch and smaller, black. 1. Fittings: ASME B16.3, malleable iron or ASTM A234/A234M, forged steel

welding type. 2. Joints: Threaded for pipe 2 inch and smaller; welded for pipe 2-1/2 inches and

larger.

B. Steel Pipe: ASTM A53/A53M, Schedule 40, black cut rolled grooved ends. 1. Fittings: ASTM A395/A395M and ASTM A536 ductile iron, or ASTM

A234/A234M carbon steel, grooved ends. 2. Joints: Grooved mechanical couplings meeting ASTM F1476.

a. Housing Clamps: ASTM A395/A395M and ASTM A536 ductile iron, enamel coated, compatible with steel piping sizes, rigid or flexible type.

b. Gasket: Elastomer composition for operating temperature range from -30 degrees F to 180 degrees F.

c. Accessories: Steel bolts, nuts, and washers.

C. Copper Tubing: ASTM B88, Type L, hard drawn. 1. Fittings: ASME B16.18, cast brass, or ASME B16.22, solder wrought copper. 2. Tee Connections: Mechanically extracted collars with notched and dimpled

branch tube.

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3. Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with melting range 430 to 535 degrees F. Braze, AWS A5.8 BCuP silver/phosphorus/copper alloy with melting range 1190 to 1480 degrees F.

2.2 EQUIPMENT DRAINS AND OVERFLOWS

A. Copper Tubing: ASTM B88, Type M, hard drawn. 1. Fittings: ASME B16.18, cast brass, or ASME B16.22 solder wrought copper. 2. Joints: Solder, lead free, ASTM B32, 95-5 tin-antimony, or tin and silver, with

melting range 430 to 535 degrees F.

2.3 UNIONS AND FLANGES

A. Unions for Pipe 2 inches and Smaller: 1. Ferrous Piping: Class 150 250 300, malleable iron, threaded. 2. Copper Piping: Class 150, bronze unions with brazed joints. 3. Dielectric Connections: Union with galvanized or plated steel threaded end,

copper solder end, water impervious isolation barrier.

B. Flanges for Pipe 2-1/2 inches and Larger: 1. Ferrous Piping: Class 150 250 300, forged steel, slip-on flanges. 2. Copper Piping: Class 150, slip-on bronze flanges. 3. Gaskets: 1/16 inch thick preformed neoprene gaskets.

2.4 PIPE HANGERS AND SUPPORTS

A. Manufacturers: 1. Carpenter & Paterson Inc. 2. Creative Systems Inc. 3. Flex-Weld, Inc. 4. Glope Pipe Hanger Products Inc. 5. Michigan Hanger Co. 6. Superior Valve Co.

B. Conform to ASME B31.1, ASME 31.9, ASTM F708, MSS SP 58, MSS SP 69, and MSS SP 89.

C. Hangers for Pipe Sizes 1/2 to 1-1/2 inch: Carbon steel, adjustable swivel, split ring.

D. Hangers for Cold Pipe Sizes 2-1/2 inches and Larger: Carbon steel, adjustable, clevis.

E. Hangers for Hot Pipe Sizes 2 to 4 inches: Carbon steel, adjustable, clevis.

F. Hangers for Hot Pipe Sizes 6 inches and Larger: Adjustable steel yoke, cast iron roll, double hanger.

G. Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods.

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Hydronic Piping 15180 - 7

H. Multiple or Trapeze Hangers for Hot Pipe Sizes 6 inches and Larger: Steel channels with welded spacers and hanger rods, cast iron roll.

I. Wall Support for Pipe Sizes 3 inches and Smaller: Cast iron hooks.

J. Wall Support for Pipe Sizes 4 inches and Larger: Welded steel bracket and wrought steel clamp.

K. Wall Support for Hot Pipe Sizes 6 inches and Larger: Welded steel bracket and wrought steel clamp with adjustable steel yoke and cast iron roll.

L. Vertical Support: Steel riser clamp.

M. Floor Support for Cold Pipe: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and concrete pier or steel support.

N. Floor Support for Hot Pipe 4 inches and Smaller: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and concrete pier or steel support.

O. Floor Support for Hot Pipe Sizes 6 inches and Larger: Adjustable cast iron roll and stand, steel screws, and concrete pier or steel support.

P. Copper Pipe Support: Carbon steel rings, adjustable, copper plated.

Q. Hanger Rods: Mild steel threaded both ends, threaded one end, or continuous threaded.

R. Inserts: Malleable iron case of steel shell and expander plug for threaded connection with lateral adjustment, top slot for reinforcing rods, lugs for attaching to forms; size inserts to suit threaded hanger rods.

PART 3 EXECUTION

3.1 PREPARATION

A. Ream pipe and tube ends. Remove burrs. Bevel plain end ferrous pipe.

B. Remove scale and dirt on inside and outside before assembly.

C. Prepare piping connections to equipment with flanges or unions.

D. Keep open ends of pipe free from scale and dirt. Protect open ends with temporary plugs or caps.

E. After completion, fill, clean, and treat systems.

3.2 INSTALLATION - INSERTS

A. Provide inserts for placement in concrete forms.

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Hydronic Piping 15180 - 8

B. Provide inserts for suspending hangers from reinforced concrete slabs and sides of reinforced concrete beams.

C. Provide hooked rod to concrete reinforcement section for inserts carrying pipe 4 inches and larger.

D. Where concrete slabs form finished ceiling, locate inserts flush with slab surface.

E. Where inserts are omitted, drill through concrete slab from below and provide through-bolt with recessed square steel plate and nut flush with top of slab.

3.3 INSTALLATION - PIPE HANGERS AND SUPPORTS

A. Install in accordance with ASME B31.9 ASTM F708 and MSS SP 89.

B. Support horizontal piping as scheduled.

C. Install hangers to provide minimum 1/2 inch space between finished covering and adjacent work.

D. Place hangers within 12 inches of each horizontal elbow.

E. Use hangers with 1-1/2 inch minimum vertical adjustment. Design hangers for pipe movement without disengagement of supported pipe.

F. Support vertical piping at every floor. Support riser piping independently of connected horizontal piping.

G. Where installing several pipes in parallel and at same elevation, provide multiple pipe hangers or trapeze hangers.

H. Provide copper plated hangers and supports for copper piping sheet lead packing between hanger or support and piping.

I. Prime coat exposed steel hangers and supports. Hangers and supports located in crawl spaces, pipe shafts, and suspended ceiling spaces are not considered exposed.

J. Provide clearance in hangers and from structure and other equipment for installation of insulation and access to valves and fittings.

3.4 INSTALLATION - ABOVE GROUND PIPING SYSTEMS

A. Install water piping in accordance with ASME B31.9. Install and chilled water piping in accordance with ASME B31.1 ASME B31.9.

B. Route piping parallel to building structure and maintain gradient.

C. Install piping to conserve building space, and not interfere with use of space.

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D. Group piping whenever practical at common elevations.

E. Sleeve pipe passing through partitions, walls and floors. Refer to Section 15061.

F. Install firestopping at fire rated construction perimeters and openings containing penetrating sleeves and piping. Refer to Section 15061.

G. Install pipe identification in accordance with Section 15076.

H. Install piping to allow for expansion and contraction without stressing pipe, joints, or connected equipment. Refer to Section 15127.

I. Provide access where valves and fittings are not exposed.

J. Slope hydronic piping and arrange systems to drain at low points. Use eccentric reducers to maintain top of pipe aligned.

K. Where pipe support members are welded to structural building framing, scrape, brush clean, and apply one coat of zinc rich primer to welds.

L. Prepare unfinished pipe, fittings, supports, and accessories, ready for finish painting.

M. Install valves with stems upright or horizontal, not inverted.

N. Insulate piping and equipment; refer to Section 15081.

3.5 FIELD QUALITY CONTROL

A. Test water piping system and chilled water piping system in accordance with ASME B31.9 ASME B31.1.

3.6 SCHEDULES

A. Copper and Steel Pipe Hanger Spacing:

PIPE SIZE Inches

COPPER TUBING MAXIMUM HANGER SPACING Feet

STEEL PIPE MAXIMUM HANGER SPACING Feet

COPPER TUBING HANGER ROD DIAMETER Inches

STEEL PIPE HANGER ROD DIAMETER Inches

1/2 5 7 3/8 3/8

3/4 5 7 3/8 3/8

1 6 7 3/8 3/8

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1-1/4 7 7 3/8 3/8

1-1/2 8 9 3/8 3/8

2 8 10 3/8 3/8

2-1/2 (Note 1) 9 11 1/2 1/2

3 10 12 1/2 1/2

4 12 14 1/2 5/8

5 13 16 1/2 5/8

6 14 17 5/8 3/4

8 16 19 3/4 3/4

10 18 22 3/4 7/8

12 19 23 3/4 7/8

14 22 25 7/8 1

16 23 27 7/8 1

18 25 28 1 1

20 27 30 1 1-1/4

24 28 32 1-1/4 1-1/4

B. Plastic and Ductile Iron Pipe Hanger Spacing:

PIPE HANGER SPACING

PIPE MATERIAL MAXIMUM HANGER SPACING Feet

HANGER ROD DIAMETER Inches

ABS (All sizes) 4 3/8

FRP (All Sizes) 4 3/8

Ductile Iron (Note 2)

PVC (All Sizes) 4 3/8

C. Note 1:Refer to manufacturer’s recommendations for grooved end piping systems.

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D. Note 2: 20 feet maximum spacing, minimum of one hanger for each pipe section close to joint behind bell. Provide hanger at each change of direction and each branch connection. For pipe sizes 6 inches and smaller, subjected to loadings other than weight of pipe and contents, limit span to maximum spacing for water service steel pipe.

END OF SECTION

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 1

SECTION 15621

PACKAGE WATER CHILLERS - RECIPROCATING, SCROLL, AND SCREW

PART 1 GENERAL

1.1 SUMMARY

A. Section includes chiller package, charge of refrigerant and oil, controls and control connections, chilled water connections, condenser water connections, refrigerant connections, auxiliary water connections, starters.

1.2 REFERENCES

A. Air-Conditioning and Refrigeration Institute: 1. Most recent version of ARI 550/590 - Water Chilling Packages Using the Vapor

Compression Cycle.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers: 1. ASHRAE 90.1 - Energy Standard for Buildings Except Low-Rise Residential

Buildings.

C. American Society of Mechanical Engineers: 1. ASME Section VIII - Boiler and Pressure Vessel Code - Pressure Vessels.

D. National Electrical Manufacturers Association: 1. NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

1.3 DEFINITIONS

A. Coefficient of Performance (COP) - cooling: The ratio of the rate of heat removal to the rate of energy input, in consistent units, for a complete refrigerating system or some specific portion of that system under designated operating conditions.

B. Integrated Part-Load Value (IPLV): A single-number figure of merit based on part-load EER, COP, or kW/ton expressing part-load efficiency for air-conditioning and heat pump equipment on the basis of weighted operation at various load capacities for the equipment.

1.4 SUBMITTALS

A. Shop Drawings: Indicate components, assembly, dimensions, weights and loads, required clearances, and location and size of field connections. Indicate valves, strainers, and thermostatic valves required for complete system.

B. Product Data: Submit rated capacities, weights, specialties and accessories, electrical requirements, wiring diagrams, and control diagrams.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 2

C. Manufacturer's Installation Instructions: Submit assembly, support details, connection requirements, and include startup instructions.

D. Manufacturer's Certificate: Certify products meet or exceed specified requirements including those furnished but not produced by manufacturer.

E. Manufacturer’s Field Reports: Submit start-up report [for each unit]. Indicate results of leak test and refrigerant pressure test.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: Submit start-up instructions, maintenance data, parts lists, controls, and accessories. Include trouble-shooting guide.

1.6 QUALITY ASSURANCE

A. Conform to ARI 550/590 code for testing and rating of scroll water chillers.

B. Performance Ratings: Coefficient of Performance (COP) and Integrated Part-Load Value (IPLV) not less than prescribed by ASHRAE 90.1.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience and with service facilities within 100 miles of Project.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

1.8 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Accept chillers on site in factory packaging. Inspect for damage.

B. Protect indoor chillers from weather by storing under roof per manufacturer’s instructions.

1.10 WARRANTY

A. Furnish five year manufacturer warranty to include coverage for compressor, evaporator, condenser, and complete assembly including materials and labor.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 3

1.11 MAINTENANCE SERVICE

A. Furnish service and maintenance of chiller for one year from Date of Substantial Completion.

B. All inspections and service of units shall be accomplished by factory trained and authorized service technicians.

C. Examine unit components monthly. Clean, adjust, and lubricate equipment.

D. Include systematic examination, adjustment, and lubrication of unit, and controls checkout and adjustments. Repair or replace parts in accordance with manufacturer's operating and maintenance data. Use parts produced by manufacturer of original equipment.

E. Perform work without removing units from service during building normal occupied hours.

F. Provide emergency call back service during working hours for this maintenance period.

G. Maintain locally, near Place of the Work, adequate stock of parts for replacement or emergency purposes. Have personnel available to ensure fulfillment of this maintenance service, without unreasonable loss of time.

H. Perform maintenance work using competent and qualified personnel under supervision of manufacturer or original installer.

I. Submit copies of service call work orders and summary reports to owner, including description of work performed, operating performance status, and noted exceptions.

J. Do not assign or transfer maintenance service to agent or subcontractor without prior written consent of Owner.

PART 2 PRODUCTS

2.1 PACKAGED WATER CHILLERS

A. Manufacturers: 1. Carrier Corp. 2. The Trane Company. 3. York 4. Lennox

B. Product Description: Factory assembled and tested, packaged, water cooled, liquid chillers consisting of hermetic scroll compressors, compressor motor, condensers, evaporator, refrigeration accessories, instrument and control panel including gages and indicating lights, auxiliary components and accessories, and motor starters.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 4

2.2 HERMETIC COMPRESSORS

A. Scroll Compressors: 1. Unit: Direct drive, hermetic, 3600 RPM, fixed compression, scroll motor-

compressor with control panel. 2. Features: Centrifugal oil pump, sump oil heater, oil level sight glass, oil charging

valve, two point lubrication for each motor bearing, flooded lubrication for journal and thrust bearings, check valve on scroll discharge port.

3. Motor: Suction-gas cooled, hermetically sealed, squirrel cage induction.

2.3 EVAPORATOR

A. The evaporator shall be a high efficiency, brazed plate-to-plate type heat exchanger consisting of parallel plates. Braze plates shall be stainless steel with copper braze material.

B. Design, test, and stamp refrigerant side for 460 psig working pressure and water side for 150 psig working pressure.

C. The evaporator shall be protected with an etched foil heater and insulated with 3/4 inch insulation. This combination shall provide freeze protection down to -20F ambient temperatures while the heater is powered.

D. Furnish water drain connection and thermometer wells for temperature controller and low temperature cutout.

2.4 CONDENSER COILS, FANS AND MOTORS

A. Coils: Aluminum fins mechanically bonded to seamless copper tubing. Furnish sub-cooling circuits as applicable. Air test under water to 715 psig, and vacuum dehydrate. Seal with holding charge of refrigerant.

B. Coil Guard: [Expanded metal] [Louvered] [with lint screens].

C. Configuration: [Single refrigeration circuit] [Two refrigeration circuits each] [with receiver].

D. Low Sound Fans shall be dynamically and statically balanced, direct drive, corrosion resistant glass fiber reinforced composite blades molded into a low noise fan blade.

E. Low speed fan motors shall be weatherproof motors suitable for outdoor use, three-phase with permanently lubricated ball bearings and individually protected by circuit breakers.

2.5 REFRIGERANT CIRCUIT

A. Factory furnished and piped.

B. Furnish for each refrigerant circuit: 1. Liquid line solenoid valve.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 5

2. Filter dryer (replaceable core type). 3. Liquid line sight glass and moisture indicator. 4. Thermal expansion for maximum operating pressure. 5. Charging valve. 6. Insulated suction line. 7. Discharge line check valve. 8. Compressor discharge service valve. 9. Pressure relief device.

2.6 CONTROLS

A. On or near chiller, mount steel control panel with NEMA 250 Type 1 enclosure, containing starters, power and control wiring, molded case disconnect switch, factory wired and tested with single point power connection.

B. For each compressor, furnish across-the-line starter, non-recycling compressor overload, starter relay, and control power transformer or terminal for control power. Furnish manual reset, current overload protection.

C. Furnish devices on control panel face: 1. Compressor, run lights. 2. System start-stop switch. 3. Control power fuse of circuit breaker. 4. Compressor lead-lag switch. 5. Demand limit switch.

D. Furnish safety controls with indicating lights arranged so machine is shut down and requires manual reset: 1. Low chilled water temperature switch. 2. High discharge pressure switch for each compressor. 3. Low suction pressure switch for each compressor. 4. Oil pressure switch. 5. Flow switch in chilled water line. 6. Flow switch in condenser water line. 7. Relay for remote mounted emergency shutdown.

E. Furnish the following operating controls: 1. Multi-step chilled water temperature controller to cycle compressor and activate

capacity controls with remote thermostat. 2. Five minute off timer prevents compressor from short cycling. 3. Part winding start timer. 4. Periodic pump-out-timer to pump down on chilled water flow and high

evaporator refrigerant pressure. 5. Controls for operation down to 32 degrees F ambient temperature. 6. Thermostat to cycle fan motors in response to outdoor ambient temperature. 7. Head pressure switch to cycle fan motors in response to refrigerant condensing

pressure. 8. Solid state control to vary speed of one condenser fan motor in response to

refrigerant condensing pressure.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 6

9. Load limit thermostat to limit compressor loading on high return water temperature.

10. Three phase monitor to protect unit by stopping compressor on phase loss, phase reversal, phase unbalance, or under voltage.

11. Cycle counter and operating hour meter.

F. Furnish pre-piped gage board with pressure gages for suction and discharge refrigerant pressures, and oil pressures for each compressor.

G. Furnish alarm package with test button and lights indicating control circuit is energized, compressor is running, and sounds audible alarm and activates indicating light upon detection of compressor malfunction, low chilled water temperature, or evaporator water flow failure.

2.7 CHILLED FLUID CIRCUIT

A. Integrated evaporator water pump.

B. Chilled fluid circuit shall be rated for 150 psig (1034 kPa) working pressure.

C. Proof of flow switch shall be factory installed the correct number of pipe diameters from any elbow and in the correct orientation. In addition, the flow switch shall be factory wired.

D. Flow switch shall be IFM flow monitor type.

E. A water strainer shall be factory provided and installed with a blow down valve to facilitate periodic cleaning of the strainer to prevent it from becoming clogged.

F. One "primary" plus "one stand-by operation" pump shall be provided.

G. The hydronic assembly shall be factory supplied electrical freeze protection to 0F.

H. Water pipe extensions with insulation shall be factory installed from the evaporator to the edge of the unit.

I. The pump motor shall be installed with an inverter or the pump impeller shall be trimmed to be within 10% of jobsite flow and total dynamic head to prevent excessive wasted pump energy.

J. The buffer tank shall be factory installed and engineered for continuous flow.

1. Tank construction shall be welded steel and tank shall be powder coated.

2. Tank shall be fully insulated and designed with freeze protection down to -20°F.

3. The tank shall be rated with a waterside working pressure of 150 psig and tested at 225 psig.

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4. Water pipe extensions shall be grooved pipe and factory installed from the evaporator to the edge of the unit.

2.8 CHILLER PERFORMANCE

A. See Schedule on sheets.

2.9 ELECTRICAL CHARACTERISTICS AND COMPONENTS

A. See schedule on sheets.

2.10 SOURCE QUALITY CONTROL (AND TESTS)

A. Furnish testing and analysis of package chillers.

B. Furnish shop inspection and testing for package chillers.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install packaged outdoor chiller on concrete foundation minimum 6 inches thick and 6 inches wider than equipment base on each side.

B. Install units on vibration isolation.

C. Install the following piping accessories on evaporator chilled water piping connections. 1. On inlet:

a. Thermometer well for temperature controller. b. Thermometer. c. Strainer. d. Flow switch. e. Flexible pipe connection. f. Pressure gage. g. Shut-off valve.

2. On outlet: a. Thermometer. b. Flexible pipe connection. c. Pressure gage. d. Shut-off and balancing valve.

D. Install auxiliary water piping for oil cooling units and purge condensers.

E. Install the following piping accessories on condenser water piping connections. 1. On inlet:

a. Thermometer well for temperature limit controller. b. Thermometer well and thermometer. c. Strainer.

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Package Water Chillers - Reciprocating, Scroll, and Screw 15621 - 8

d. Flow switch. e. Flexible pipe connection. f. Pressure gage. g. Shut-off valve.

2. On outlet: a. Thermometer well and thermometer. b. Flexible pipe connection. c. Pressure gage. d. Shut-off and balancing valve.

F. Arrange piping for easy dismantling to permit tube cleaning.

G. Install chiller accessories furnished loose for field mounting.

H. Install electrical devices furnished loose for field mounting.

I. Install control wiring between chiller control panel and field mounted control devices.

J. Provide connection to electrical service.

3.2 FIELD QUALITY CONTROL

A. Furnish cooling season start-up, winter season shutdown service, for first year of operation. When initial start-up and testing takes place in winter and machines are to remain inoperative, repeat start-up and testing operation at beginning of first cooling season.

3.3 MANUFACTURER'S FIELD SERVICES

A. Furnish services of factory trained representative for minimum of one day to leak test, refrigerant pressure test, evacuate, dehydrate, charge, start-up, calibrate controls, and instruct Owner on operation and maintenance.

B. Furnish initial charge of refrigerant and oil.

3.4 DEMONSTRATION AND TRAINING

A. Demonstrate system operations and verify specified performance. Demonstrate low ambient operation during winter testing for air-cooled condensers.

END OF SECTION

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Indoor Central-Station Air-Handling Units 15720 - 1

SECTION 15720

INDOOR CENTRAL-STATION AIR-HANDLING UNITS

PART 1 GENERAL

1.1 SUMMARY

A. Section includes modular factory fabricated air-handling units and accessories.

1.2 REFERENCES

A. American Bearing Manufacturers Association: 1. ABMA 9 - Load Ratings and Fatigue Life for Ball Bearings. 2. ABMA 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. Air Movement and Control Association International, Inc.: 1. AMCA 99 - Standards Handbook. 2. AMCA 210 - Laboratory Methods of Testing Fans for Aerodynamic Performance

Rating. 3. AMCA 300 - Reverberant Room Method for Sound Testing of Fans. 4. AMCA 301 - Methods for Calculating Fan Sound Ratings from Laboratory Test

Data. 5. AMCA 500 - Test Methods for Louvers, Dampers, and Shutters.

C. Air-Conditioning and Refrigeration Institute: 1. ARI 410 - Forced-Circulation Air-Cooling and Air-Heating Coils. 2. ARI 430 - Central-Station Air-Handling Units. 3. ARI 610 - Central System Humidifiers for Residential Applications. 4. ARI Guideline D - Application and Installation of Central Station Air-Handling

Units.

D. National Electrical Manufacturers Association: 1. NEMA MG 1 - Motors and Generators.

E. Sheet Metal and Air Conditioning Contractors: 1. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

F. Underwriters Laboratories Inc.: 1. UL 900 - Air Filter Units. 2. UL - Fire Resistance Directory.

1.3 SUBMITTALS

A. Shop Drawings: Indicate assembly, unit dimensions, weight loading, required clearances, construction details, field connection details, and electrical characteristics and connection requirements.

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B. Product Data, Submit the following: 1. Published Literature: Indicate capacities, ratings, gages and finishes of materials,

and electrical characteristics and connection requirements. 2. Filters: Data for filter media, filter performance data, filter assembly, and filter

frames. 3. Fans: Performance and fan curves with specified operating point plotted, power,

RPM. 4. Sound Power Level Data: Fan outlet and casing radiation at rated capacity. 5. Dampers: Include leakage, pressure drop, and sample calibration curves. Indicate

materials, construction, dimensions, and installation details. 6. Electrical Requirements: Power supply wiring including wiring diagrams for

interlock and control wiring. Indicate factory installed and field installed wiring.

C. Manufacturer's Installation Instructions: Submit.

D. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

E. The manufacturer shall list any exceptions to the specification.

1.4 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: Submit instructions for lubrication, filter replacement, motor and drive replacement, spare parts lists, and wiring diagrams.

1.5 QUALITY ASSURANCE

A. Outside Air Damper Leakage: Test in accordance with AMCA 500.

B. Air Coils: Certify capacities, pressure drops and selection procedures in accordance with current AHRI Standard 410.

C. Air handling units with fan sections utilizing single fans shall be rated and certified in accordance with AHRI Standard 430.

D. Air handling units with fan sections utilizing multiple fans shall be rated in accordance with AHRI Standard 430 for airflow, static pressure, and fan speed performance.

E. Airflow monitoring station: Certify airflow measurement station performance in accordance with AMCA 611.

1.6 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

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1.7 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Accept units and components on site in factory protective containers, with factory shipping skids and lifting lugs. Inspect for damage.

B. Comply with manufacturer's installation instructions for rigging, unloading, and transporting units.

C. Units shall ship fully assembled up to practical shipping and rigging limitations. Units not shipped fully assembled shall have tags and airflow arrows on each section to indicate location and orientation in direction of airflow. Shipping splits shall be clearly defined on submittal drawings. Cost associated with non-conformance to shop drawings shall be the responsibility of the manufacturer. Each section shall have lifting lugs for field rigging and final placement of AHU sections. Indoor AHUs less than 100 inches wide shall allow for forklift transport for maneuverability on jobsite.

D. Deliver units to jobsite with fan motor(s), sheave(s), and belt(s) completely assembled and mounted in units.

E. Indoor air handling units shall be shipped in a clear shrink-wrap or stretch-wrap to protect unit from in-transit rain and debris per ASHRAE 62.1 recommendations.

F. Installing contractor shall be responsible for storing in a clean, dry place and protect from weather and construction traffic. Handle carefully to avoid damage to components, enclosures, and finish.

1.9 WARRANTY

A. Furnish five year manufacturer warranty for air handling units.

PART 2 PRODUCTS

2.1 AIR HANDLING UNITS

A. Manufacturers: 1. Trane 2. Lennox International 3. Carrier 4. York International

B. Configuration: Fan coil section plus accessories, including: 1. Cooling coil section. 2. Humidifier. 3. Filter sections.

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4. Combination filter/mixing box section. 5. Mixing box section.

C. Performance Base: Sea level altitude.

D. Fabrication: Conform to AMCA 99 and ARI 430.

2.2 CASING

A. Channel base and drain pan of welded steel. Assemble sections with gaskets and bolts.

B. Unit manufacturer shall ship separate segments so unit can be broken down for ease of installation in tight spaces. The entire air handler shall be constructed of galvanized steel. Indoor air handling unit casing finish to meet ASTM B117 250-hour salt-spray test. The removal of access panels or access doors shall not affect the structural integrity of the unit. All removable panels shall be gasketed. All doors shall have gasketing around full perimeter to prevent air leakage. Contractor shall be responsible to provide connection flanges and all other framework that is needed to properly support the unit.

C. Casing performance – Casing air leakage shall not exceed leak class 6 (CL = 6) per ASHRAE 111 at specified casing pressure, where maximum casing leakage (cfm/100 ft2 of casing surface area) = CL X P0.65.

D. Air leakage shall be determined at 1.50 times maximum casing static pressure up to 8 inches w.g. Specified air leakage shall be accomplished without the use of caulk. Total estimated air leakage shall be reported for each unit in CFM, as a percentage of supply air, and as an ASHRAE 111 Leakage Class.

E. Under 55°F supply air temperature and design conditions on the exterior of the unit of 81°F dry bulb and 73°F wet bulb, condensation shall not form on the casing exterior. Manufacturer shall provide, in writing to the Engineer and Owner, a guarantee against condensation forming on the unit exterior. The guarantee shall note that the manufacturer will cover all expenses associated with modifying units in the field should external condensate form on them.

F. Unit casing (wall/floor/pressure bulkhead roof panels and doors) shall be able to withstand up to 1.5 times design static pressure up to +8” w.g. in all positive pressure sections and -8” w.g. in all negative pressure sections, whichever is less, and shall not exceed 0.0042” per inch of panel span (L/240).

G. Floor panels shall be double-wall construction and designed to support a 300-lb load during maintenance activities and shall deflect no more than 0.0042” per inch of panel span.

H. Unit casing panels shall be 2” double-wall construction, with solid galvanized exterior and solid galvanized interior, to facilitate cleaning of unit interior.

I. Unit casing panels (pressure bulkhead roof panels, walls, floor) and doors shall be provided with a minimum thermal resistance (R-value) of 13 Hr*Ft2*°F/BTU.

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J. Unit casing panels (pressure bulkhead roof panels, walls, floor) and external structural frame members shall be completely insulated filling the entire panel cavity in all directions so that no voids exist. Panel insulation shall comply with NFPA 90A.

K. Structural frame must not extend from air-handling unit interior to exterior. All component and panel support structure must be internal to AHU. Casing panel inner liners must not extend to the exterior of the unit or contact the exterior frame. A mid-span, no-through-metal, internal thermal break shall be provided for all unit casing panels.

L. Access panels and/or access doors shall be provided in all sections to allow easy access to drain pan, coil(s), motor, drive components and bearings for cleaning, inspection, and maintenance.

M. Access panels and doors shall be fully removable without the use of specialized tools to allow complete access of interior surfaces.

N. Lights: Located in accessible sections suitable for damp locations with wire guards, factory wired to switch. In humidifier sections, furnish lights suitable for wet locations.

2.3 ACCESS DOORS

A. Access doors shall be 2” double-wall construction. Interior and exterior shall be of the same construction as the interior and exterior wall panels.

B. All doors downstream of cooling coils shall be provided with a thermal break construction of door panel and door frame.

C. Gasketing shall be provided around the full perimeter of the doors to prevent air leakage.

D. Door hardware shall be surface-mounted to prevent through-cabinet penetrations that could likely weaken the casing leakage and thermal performance.

E. Handle hardware shall be designed to prevent unintended closure.

F. Access doors shall be hinged and removable without the use of specialized tools to allow.

G. Hinges shall be interchangeable with the door handle hardware to allow for alternating door swing in the field to minimize access interference due to unforeseen job site obstructions.

H. Door handle hardware shall be adjustable and visually indicate locking position of door latch external to the section.

I. All doors shall be a minimum 60” high when sufficient height is available, or the maximum height allowed by the unit height.

J. Multiple door handles for indoor air handling units shall be provided for each latching point of the door necessary to maintain the specified air leakage integrity of the unit.

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2.4 DRAIN PANS

A. All cooling coil sections shall be provided with an insulated, double-wall, stainless steel drain pan.

B. The drain pan shall be designed in accordance with ASHRAE 62.1 being of sufficient size to collect all condensation produced from the coil and sloped in two planes, pitched toward drain connections, promoting positive drainage to eliminate stagnant water conditions when unit is installed level and trapped per manufacturer's requirements.

C. The outlet shall be located at the lowest point of the pan and shall be sufficient diameter to preclude drain pan overflow under any normally expected operating condition.

D. All drain pan threaded connections shall be visible external to the unit. Threaded connections under the unit floor shall not be accepted.

E. Drain connections shall be of the same material as the primary drain pan and shall extend a minimum 2-1/2” beyond the base to ensure adequate room for field piping of condensate traps.

F. The installing contractor is responsible to ensure the unit is installed level, trapped in accordance with the manufacturer's requirements, and visually inspected to ensure proper drainage of condensate.

G. Coil support members inside the drain pan shall be of the same material as the drain pan and coil casing.

2.5 FANS

A. Type: Forward curved type fan.

B. Performance Ratings: Conform to AMCA 210.

C. Sound Ratings: AMCA 301, tested to AMCA 300.

D. Bearings: Self-aligning, grease lubricated, ball or roller bearings with lubrication fittings extended to exterior of casing with tube and grease fitting rigidly attached to casing.

E. Mounting: Locate fan and motor internally on welded steel base coated with corrosion resistant paint. Factory mount motor on slide rails. Furnish access to motor, drive, and bearings through removable casing panels or hinged access doors. Mount base on vibration isolators.

F. Fan Modulation: A combination Variable Frequency Drive (VFD) / disconnect shall be provided for variable air volume control. A single VFD shall be provide to ensure proper operation and to optimize operating life. Each VFD / disconnect shall be properly sized, factory mounted in a full metal enclosure, wired to the fan motor, and commissioned to facilitate temporary heating, cooling, ventilation, and/or timely completion of the project.

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VFD / disconnects shall include a circuit breaker disconnect with a through-the-door interlocking handle and shall be lockable. The VFD package shall also include: 1. Electronic manual speed control 2. Hand-Off-Auto (H-O-A) selector switch 3. Inlet fuses to provide maximum protection against inlet short circuit 4. Current limited stall prevention 5. Auto restart after momentary power loss 6. Speed search for starting into rotating motor 7. Anti-windmill w/DC injection before start 8. Phase-to-phase short circuit protection 9. Ground fault protection

Units with factory-mounted controls shall include power wiring from the VFD panel to the control system transformers, binary output on/off wiring, analog output-speed-signal wiring, and all interfacing wiring between the VFD and the direct digital controller. The VFD shall be UL508C listed and CSA certified and conform to applicable NEMA, ICS, NFPA, & IEC standards.

G. Fan airflow measurement systems shall be provided to measure fan airflow directly or to measure differential pressure that can be used to calculate airflow. The accuracy of the devices shall be no worse than +/- 5 percent when operating within stable fan operating conditions. Devices shall not affect the submitted fan performance and acoustical levels. Devices that obstruct the fan inlet or outlet shall not be acceptable. Devices shall be connected to transducers with a 2-10 VDC output. Signal shall be proportional to air velocity.

H. Flexible Connection: Separate unit from connecting ductwork.

2.6 COILS

A. The coil section shall be provided complete with coil and coil holding frame. The coils shall be installed such that headers and return bends are enclosed by unit casings. If two or more cooling coils are stacked in the unit, an intermediate drain pan shall be installed between each coil and be of the same material as the primary drain pan. Like the primary drain pan, the intermediate drain pan shall be designed being of sufficient size to collect all condensation produced from the coil and sloped to promote positive drainage to eliminate stagnant water conditions. The intermediate pan shall begin at the leading face of the water-producing device and be of sufficient length extending downstream to prevent condensate from passing through the air stream of the lower coil. Intermediate drain pan shall include downspouts to direct condensate to the primary drain pan. The outlet shall be located at the lowest point of the pan and shall be sufficient diameter to preclude drain pan overflow under any normally expected operating condition.

B. Air Coils: Certify capacities, pressure drops, and selection procedures in accordance with ARI 410.

C. Water Cooling Coils:

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1. The coils shall have aluminum fins and seamless copper tubes. Copper fins may be applied to coils with 5/8-inch tubes. Fins shall have collars drawn, belled, and firmly bonded to tubes by mechanical expansion of the tubes.

2. The coils shall be proof-tested to 300 psig and leak-tested under water to 200 psig.

2.7 HUMIDIFIER

A. Humidifier section shall be provided with a humidifier panel designed for building steam. Humidifier panel shall include stainless steel construction of all wetted parts including the integrated header/separator and multiple tube dispersion assembly. Tube-to-header joints shall consist of welded stainless steel. Humidifier shall provide a uniform steam discharge. Humidifiers shall be provided with a control valve, inverted bucket steam trap, wye strainer, and two float and thermostatic steam traps shipped loose for field installation. All pipe connections shall be made from one side of the air handler.

2.8 FILTERS

A. Mixing sections shall be provided with a filter rack as indicated in unit schedule. 2-inch pleated media filters coated with an anti-microbial agent shall be provided. Filters shall be nonwoven fabric, treated with adhesive and continuously laminated to a supported steel-wire grid. Filters shall be capable of operating up to 625 fpm face velocity without loss of filter efficiency and holding capacity. The filters shall have a MERV 7 rating when tested in accordance with the ANSI/ASHRAE Standard 52.2. A section shall be provided to support the filter rack as indicated throughout the unit.

B. Bag Filters shall be fine-fiber, all-glass media with spun backing to keep glass fibers from eroding downstream. The stitching method shall permit the bag to retain its pleated shape without the use of a wire-basket support. The filters shall be capable of operating up to 625 fpm face velocity without loss of filter efficiency and holding capacity. The filters shall be sealed into a metal header. A gasket material shall be installed on the metal header of the filter to prevent filter bypass where the metal headers meet the side-access racks. All bag filters shall be furnished with a 2-inch prefilter to extend bag filter life. The manufacturer shall supply a side-access filter rack capable of holding bag filters and prefilters. The bag filters shall have a MERV 14 rating when tested in accordance with the ANSI/ASHRAE Standard 52.2.

C. HEPA Filters filter cells shall be enclosed in a galvanized steel frame with neoprene rubber applied to the leaving-air side of the filter cell to reduce air leakage. Front-load filter frames with filter holding clips shall be mounted inside the section casing and shall be gasketed to prevent leakage or air bypass. Filter clips shall require tooling in order to tighten and hold filter cells to frame. Filter media shall be produced from glass waterproof microfiber with a continuous pleat and aluminum separators between pleat folds. Filters as produced shall be capable of operating up to 500-fpm face velocity without loss of filter efficiency. HEPA filter efficiency shall be not less than 99.97 percent when tested in accordance with IEST RP CC 001.4. By definition (IEST RP CC 001.4), HEPA filters are a minimum of 99.97% efficient when tested using 0.3-μm thermally generated particles. Filter frame assemblies when tested in accordance IEST-

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Indoor Central-Station Air-Handling Units 15720 - 9

RP-CC0.34.3 are a minimum of 99.97% efficient when tested using 0.3-μm generated particles.

2.9 OUTSIDE AIR MEASURING AND MODULATION DEVICE

A. A mixing section shall be provided to support the damper assembly for outdoor, return, and/or exhaust air. Dampers shall modulate the volume of outdoor, return, or exhaust air. 1. The dampers shall be of double-skin airfoil design with metal, compressible jamb

seals and flexible blade-edge seals on all blades. The blades shall rotate on stainless-steel sleeve bearings.

2. The dampers shall be rated for a maximum leakage rate of 3 cfm/ft² at 1 in. w.g. complying with ASHRAE 90.1 maximum damper leakage. All leakage testing and pressure ratings shall be based on AMCA Standard 500-D.

3. Dampers may be arranged in a parallel or opposed-blade configuration. 4. Electric Actuator: 24 V, 60 Hz, modulating, with position feedback. 5. Digital Controller: Application specific controller. Programming logic and

calibration in nonvolatile EPROM..

B. The airflow measurement station shall measure up to 100 percent of the total outside air and/or return air. The airflow measurement station shall be capable of measuring down to 300 fpm. The airflow measuring device shall adjust for temperature variations. Output shall be provided from the station as a 0-10 VDC signal. Signal shall be proportional to air velocity. The accuracy of the measuring station shall be no greater than +/- 5 percent. Airflow measuring stations shall be mounted on the AHU interior.

2.10 CONTROLS

A. Controls: Refer to Section 15910 and 15940 for sequence of operation.

2.11 CAPACITY

A. See schedules on sheets.

2.12 ELECTRICAL CHARACTERISTICS AND COMPONENTS

A. See schedule on sheets.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install in accordance with ARI 430.

B. Install flexible connections between unit and inlet and discharge ductwork. Install metal bands of connectors parallel with minimum 1 inch flex between ductwork and fan while running.

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C. Install assembled units with vibration isolators. Install isolated fans with resilient mountings and flexible electrical leads. Install restraining snubbers as required. Adjust snubbers to prevent tension in flexible connectors when fan is operating.

D. Insulate coil headers located outside airflow as specified for piping.

E. Connect humidifiers to water supply. Install gate valve on water supply piping. Install hose bibb accessible from interior. Pipe drain and overflow per plumbing plans.

F. Install condensate piping with trap and route from drain pan to condensate drainage system.

3.2 INSTALLATION CHILLED WATER COOLING COIL

A. Make connections to coils with unions or flanges.

B. Install water coils to allow draining and install drain connection at low points.

C. Install the following piping accessories on chilled water piping connections. 1. On supply:

a. Thermometer well and thermometer. b. Well for control system temperature sensor. c. Shutoff valve. d. Strainer. e. Control valve. f. Pressure gage.

2. On return: a. Thermometer well and thermometer. b. Well for control system temperature sensor. c. Pressure gage. d. Shutoff valve. e. Flow control valve.

D. Install automatic air vents at high points complete with shutoff valve.

3.3 MANUFACTURER'S FIELD SERVICES

A. Furnish initial start-up and shutdown during first year of operation, including routine servicing and checkout.

3.4 CLEANING

A. Vacuum clean coils and inside of unit cabinet.

B. Install temporary filters during construction period. Replace with permanent filters at Substantial Completion.

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3.5 DEMONSTRATION

A. Demonstrate unit operation and maintenance.

B. Furnish services of manufacturer's technical representative for one 8 hour day to instruct Owner's personnel in operation and maintenance of units. Schedule training with Owner, provide at least 7 day notice to Architect/Engineer of training date.

3.6 PROTECTION OF FINISHED WORK

A. Do not operate units until ductwork is clean, filters are in place, bearings lubricated, and fan has been test run under observation.

3.7 SCHEDULES

A. See schedules on sheets.

END OF SECTION

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Direct-Digital Control System for HVAC 15910 - 1

SECTION 15910 DIRECT DIGITAL CONTROLS FOR SURGICAL AREA

(CH-1, AHU 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, EF-1, 2, 3, 4)

PART 1 GENERAL

1.1 SUMMARY

A. Section includes control equipment and software.

1.2 REFERENCES

A. American National Standards Institute: 1. ANSI MC85.1 - Terminology for Automatic Control.

1.3 SYSTEM DESCRIPTION

A. Automatic temperature controls field monitoring and control system using field programmable microprocessor based units.

B. Base system on distributed system of fully intelligent, stand-alone controllers, operating in a multi-tasking, multi-user environment on token passing network, with central and remote hardware, software, and interconnecting wire and conduit.

C. Provide computer software and hardware, operator input/output devices, control units, local area networks (LAN), sensors, control devices, actuators.

D. Provide control systems consisting of thermostats, control valves, dampers and operators, indicating devices, interface equipment and other apparatus and accessories to operate mechanical systems, and to perform functions specified.

E. Provide installation and calibration, supervision, adjustments, and fine tuning necessary for complete and fully operational system.

1.4 SUBMITTALS

A. Shop Drawings: Indicate the following: 1. Trunk cable schematic showing programmable control-unit locations and trunk

data conductors. 2. Connected data points, including connected control unit and input device. 3. System graphics showing monitored systems, data (connected and calculated)

point addresses, and operator notations. 4. System configuration with peripheral devices, batteries, power supplies,

diagrams, modems, and interconnections. 5. Description and sequence of operation for operating, user, and application

software. 6. Use terminology in submittals conforming to ASME MC85.1.

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B. Product Data: Submit data for each system component and software module.

C. Manufacturer's Installation Instructions: Submit installation instruction for each control system component.

D. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of control components, including control units, thermostats, and sensors. 1. Revise shop drawings to reflect actual installation and operating sequences. 2. Submit data specified in "Submittals" in final "Record Documents" form.

B. Operation and Maintenance Data: 1. Submit interconnection wiring diagrams complete field installed systems with

identified and numbered, system components and devices. 2. Submit keyboard illustrations and step-by-step procedures indexed for each

operator function. 3. Submit inspection period, cleaning methods, cleaning materials recommended,

and calibration tolerances.

1.6 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with minimum three years documented experience and with service facilities within 100 miles of Project.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

1.7 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.8 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

1.9 WARRANTY

A. Furnish five year manufacturer warranty for direct digital controls.

1.10 MAINTENANCE SERVICE

A. Furnish service and maintenance of control systems for one years from Date of Substantial Completion.

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B. Furnish complete service of controls systems, including callbacks. Make minimum of 2 complete normal inspections of approximately 8 hours duration in addition to normal service calls to inspect, calibrate, and adjust controls. Submit written report after each inspection.

C. Furnish two complete inspections , one in each season, to inspect, calibrate, and adjust controls. Submit written report after each inspection.

D. Examine unit components bi-monthly. Clean, adjust, and lubricate equipment.

E. Include systematic examination, adjustment, and lubrication of unit, and controls checkout and adjustments. Repair or replace parts in accordance with manufacturer's operating and maintenance data. Use parts produced by manufacturer of original equipment.

F. Perform work without removing units from service during building normal occupied hours.

G. Provide emergency call back service during working hours for this maintenance period.

H. Maintain locally, near Place of the Work, adequate stock of parts for replacement or emergency purposes. Have personnel available to ensure fulfillment of this maintenance service, without unreasonable loss of time.

I. Perform maintenance work using competent and qualified personnel under supervision of manufacturer or original installer.

J. Do not assign or transfer maintenance service to agent or subcontractor without prior written consent of Owner.

PART 2 PRODUCTS

2.1 DIRECT DIGITAL CONTROLS

A. Manufacturers: 1. Carrier Corp. Model 2. Honeywell 3. Johnson Controls 4. Siemens 5. The Trane Company

2.2 OPERATOR WORKSTATION

A. Furnish each operator workstation consisting of the following:

B. Personal Computer: IBM PC compatible with sufficient memory and hard drive storage to support graphics, reports, and communication requirements. Furnish with the following minimum configuration requirements:

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1. Pentium Core 2 DUO or better 2. 4 GB RAM 3. 100 GB hard drive space 4. Internet Browser compatible with operator interface requirements.

C. Monitor: Minimum of 17 inch color, flat panel display.

D. Operating System: Windows 8.

E. Furnish device capable of accessing system data and capable of being connected to any point on system network or connected directly to any controller for programming, set-up, and troubleshooting. Portable Operators Terminal uses Read (Initiate) and Write (Execute) Services as defined in Clauses 15.5 and 15.8, respectively, of ASHRAE Standard 135, to communicate with BACnet objects in internetwork. Objects supported include: Analog input, analog output, analog value, binary input, binary output, binary value, device.

2.3 CONTROL UNITS

A. Units: Modular in design and consisting of processor board with programmable RAM memory, local operator access and display panel, and integral interface equipment.

B. Battery Backup: For minimum of 48 hours for complete system including RAM without interruption, with automatic battery charger.

C. Control Units Functions: 1. Monitor or control each input/output point. 2. Completely independent with hardware clock/calendar and software to maintain

control independently. 3. Acquire, process, and transfer information to operator station or other control

units on network. 4. Accept, process, and execute commands from other control unit's or devices or

operator stations. 5. Access both data base and control functions simultaneously. 6. Record, evaluate, and report changes of state or value occurring among

associated points. Continue to perform associated control functions regardless of status of network.

7. Perform in stand-alone mode: a. Start/stop. b. Duty cycling. c. Automatic Temperature Control. d. Demand control via a sliding window, predictive algorithm. e. Event initiated control. f. Calculated point. g. Scanning and alarm processing. h. Full direct digital control. i. Trend logging. j. Global communications. k. Maintenance scheduling.

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D. Global Communications: 1. Broadcast point data onto network, making information available to other system

controls units. 2. Transmit input/output points onto network for use by other control units and use

data from other control units.

E. Input/output Capability: 1. Discrete/digital input (contact status). 2. Discrete/digital output. 3. Analog input. 4. Analog output. 5. Pulse input (5 pulses/second). 6. Pulse output (0-655 seconds in duration with 0.01-second resolution).

F. Monitor, control, or address data points. Include analog inputs, analog outputs, pulse inputs, pulse outputs and discrete inputs/outputs. Furnish control units with minimum 30 percent spare capacity.

G. Point Scanning: Set scan or execution speed of each point to operator selected time from 1 to 250 seconds.

H. Upload/Download Capability: Download from or upload to operator station. Upload/Download time for entire control unit database maximum 10 seconds on hard-wired LAN or 60 seconds over voice grade phone lines.

I. Test Mode Operation: Place input/output points in test mode to allow testing and developing of control algorithms on line without disrupting field hardware and controlled environment. In test mode: 1. Inhibit scanning and calculation of input points. Issue manual control to input

points (set analog or digital input point to operator determined test value) from workstation.

2. Control output points but change only database state or value; leave external field hardware unchanged.

3. Enable control-actions on output points but change only data base state or value.

J. Local display and adjustment panel: Integral to control-unit containing digital display, and numerical keyboard. Display and adjust: 1. Input/output point information and status. 2. Controller set points. 3. Controller tuning constants. 4. Program execution times. 5. High and low limit values. 6. Limit differential. 7. Set/display date and time. 8. Control outputs connected to the network. 9. Automatic control outputs. 10. Perform control unit diagnostic testing.

K. Points in "Test" mode.

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2.4 LOCAL AREA NETWORKS (LAN):

A. Furnish communication between control units over local area network (LAN).

B. LAN Capacity: Not less than 60 stations or nodes.

C. Break in Communication Path: Alarm and automatically initiate LAN reconfiguration.

D. LAN Data Speed: Minimum 19.2 Kb.

E. Communication Techniques: Allow interface into network by multiple operation stations and by auto-answer/auto-dial modems. Support communication over telephone lines utilizing modems.

F. Transmission Median: Fiber optic or single pair of solid 24 gauge twisted, shielded copper cable.

G. Network Support: Time for global point to be received by any station, less than 3 seconds. Furnish automatic reconfiguration when station is added or lost. In event transmission cable is cut, reconfigure two sections with no disruption to system's operation, without operator intervention.

2.5 OPERATING SYSTEM SOFTWARE

A. Input/output Capability From Operator Station: 1. Request display of current values or status in tabular or graphic format. 2. Command selected equipment to specified state. 3. Initiate logs and reports. 4. Change analog limits. 5. Add, delete, or change points within each control unit or application routine. 6. Change point input/output descriptors, status, alarm descriptors, and unit

descriptors. 7. Add new control units to system. 8. Modify and set up maintenance scheduling parameters. 9. Develop, modify, delete or display full range of color graphic displays. 10. Automatically archive select data even when running third party software. 11. Capability to sort and extract data from archived files and to generate custom

reports. 12. Support two printer operations. 13. Alarm printer: Print alarms, operator acknowledgments, action messages, system

alarms, operator sign-on and sign-off. 14. Data printer: Print reports, page prints, and data base prints. 15. Select daily, weekly or monthly as scheduled frequency to synchronize time and

date in digital control units. Accommodate daylight savings time adjustments. 16. Print selected control unit database.

B. Operator System Access: Via software password with minimum 30 access levels at work station and minimum 3 access levels at each control unit.

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C. Data Base Creation and Support: Use standard procedures for changes. Control unit automatically checks workstation data base files upon connection and verify data base match. Include the following minimum capabilities: 1. Add and delete points. 2. Modify point parameters. 3. Change, add, or delete English language descriptors. 4. Add, modify, or delete alarm limits. 5. Add, modify, or delete points in start/stop programs, trend logs, and other items. 6. Create custom relationship between points. 7. Create or modify DDC loops and parameters. 8. Create or modify override parameters. 9. Add, modify, and delete applications programs. 10. Add, delete, develop, or modify dynamic color graphic displays.

D. Dynamic Color Graphic Displays: 1. Utilizes custom symbols or system supported library of symbols. 2. Sixteen (16) colors. 3. Sixty (60) outputs of real-time live dynamic data for each graphic. 4. Dynamic graphic data. 5. 1,000 separate graphic pages. 6. Modify graphic screen refresh rate between 1 and 60 seconds.

E. Operator Station: 1. Accept data from LAN as needed without scanning entire network for updated

point data. 2. Interrogate LAN for updated point data when requested. 3. Allow operator command of devices. 4. Allow operator to place specific control units in or out of service. 5. Allow parameter editing of control units. 6. Store duplicate data base for every control unit and allow down loading while

system is on line. 7. Control or modify specific programs. 8. Develop, store and modify dynamic color graphics. 9. Data archiving of assigned points and support overlay graphing of this data using

up to four (4) variables.

F. Alarm Processing: 1. Off normal condition: Cause alarm and appropriate message, including time,

system, point descriptor, and alarm condition. Select alarm state or value and alarms causing automatic dial-out.

2. Critical alarm or change-of-state: Display message, stored on disk for review and sort, or print.

3. Print on line changeable message, up to 60 characters in length, for each alarm point specified.

4. Display alarm reports on video. Display multiple alarms in order of occurrence. 5. Define time delay for equipment start-up or shutdown. 6. Allow unique routing of specific alarms. 7. Operator specifies when alarm requires acknowledgment.

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8. Continue to indicate unacknowledged alarms after return to normal. 9. Alarm notification: 10. Print automatically. 11. Display indicating alarm condition. 12. Selectable audible alarm indication.

G. Event Processing: Automatically initiate commands, user defined messages, take specific control actions or change control strategy and application programs resulting from event condition. Event condition may be value crossing operator defined limit, change of state, specified state, or alarm occurrence or return to normal.

H. Automatic Restart: Automatically start field equipment on restoration of power. Furnish time delay between individual equipment restart and time of day start/stop.

I. Messages: 1. Automatically display or print user-defined message subsequent to occurrence of

selected events. 2. Compose, change, or delete message. 3. Display or log message at any time. 4. Assign any message to event.

J. Reports: 1. Manually requested with time and date. 2. Long term data archiving to hard disk. 3. Automatic directives to download to transportable media including floppy

diskettes for storage. 4. Data selection methods to include data base search and manipulation. 5. Data extraction with mathematical manipulation. 6. Data reports to allow development of XY curve plotting, tabular reports (both

statistical and summary), and multi-point timed based plots with not less than four (4) variables displayed.

7. Generating reports either normally at operator direction, or automatically under workstation direction.

8. Either manually display or print reports. Automatically print reports on daily, weekly, monthly, yearly or scheduled basis.

9. Include capability for statistical data manipulation and extraction. 10. Capability to generate four types of reports: Statistical detail reports, summary

reports, trend graphic plots, x-y graphic plots.

K. Parameter Save/Restore: Store most current operating system, parameter changes, and modifications on disk or diskette.

L. Data Collection: 1. Automatically collect and store in disk files. 2. Daily electrical energy consumption, peak demand, and time of peak demand for

up to electrical meters over 2-year period. 3. Daily consumption for up to 30 meters over a 2 year period. 4. Daily billable electrical energy consumption and time for up to 1024 zones over a

10 year period.

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5. Archiving of stored data for use with system supplied custom reports.

M. Graphic Display: Support graphic development on work station with software features: 1. Page linking. 2. Generate, store, and retrieve library symbols. 3. Single or double height characters. 4. Sixty (60) dynamic points of data for each graphic page. 5. Pixel level resolution. 6. Animated graphics for discrete points. 7. Analog bar graphs. 8. Display real time value of each input or output line diagram fashion.

N. Maintenance Management: 1. Run time monitoring, for each point. 2. Maintenance scheduling targets with automatic annunciation, scheduling and

shutdown. 3. Equipment safety targets. 4. Display of maintenance material and estimated labor. 5. Target point reset, for each point.

O. Advisories: 1. Summary containing status of points in locked out condition. 2. Continuous operational or not operational report of interrogation of system

hardware and programmable control units for failure. 3. Report of power failure detection, time and date. 4. Report of communication failure with operator device, field interface unit, point

and programmable control unit.

2.6 LOAD CONTROL PROGRAMS

A. General: Support inch-pounds and S.I. metric units of measurement.

B. Demand Limiting: 1. Monitor total power consumption for each power meter and shed associated

loads automatically to reduce power consumption to an operator set maximum demand level.

2. Input: Pulse count from incoming power meter connected to pulse accumulator in control unit.

3. Forecast demand (kW): Predicted by sliding window method. 4. Automatically shed loads throughout the demand interval selecting loads with

independently adjustable on and off time of between one and 255 minutes. 5. Demand Target: Minimum of 3 for each demand meter; change targets based

upon (1) time, (2) status of pre-selected points, or (3) temperature. 6. Load: Assign load shed priority, minimum "ON" time and maximum "OFF"

time. 7. Limits: Include control band (upper and lower limits). 8. Output advisory when loads are not available to satisfy required shed quantity,

advise shed requirements [and requiring operator acknowledgment].

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C. Duty Cycling: 1. Periodically stop and start loads, based on space temperature, and according to

various On/Off patterns. 2. Modify off portion of cycle based on operator specified comfort parameters.

Maintain total cycle time by increasing on portion of cycle by equal quantity off portion is reduced.

3. Set and modify following parameters for each individual load. a. Minimum and maximum off time. b. On/Off time in one-minute increments. c. Time period from beginning of interval until cycling of load. d. Manually override the DDC program and place a load in an On or Off

state. e. Cooling Target Temperature and Differential. f. Heating Target Temperature and Differential. g. Cycle off adjustment.

D. Automatic Time Scheduling: 1. Self-contained programs for automatic start/stop/scheduling of building loads. 2. Support up to seven (7) normal day schedules, seven (7) "special day" schedules

and two (2) temporary day schedules. 3. Special day’s schedule supporting up to 30 unique date/duration combinations. 4. Number of loads assigned to time program; with each load having individual

time program. 5. Each load assigned at least 16 control actions for each day with 1 minute

resolution. 6. Furnish the following time schedule operations:

a. Start. b. Optimized Start. c. Stop. d. Optimized Stop. e. Cycle. f. Optimized Cycle.

7. Capable of specifying minimum of 30 holiday periods up to 100 days in length for the year.

8. Create temporary schedules. 9. Broadcast temporary "special day" date and duration.

E. Start/Stop Time Optimization: 1. Perform optimized start/stop as function of outside conditions, inside conditions,

or both. 2. Adaptive and self-tuning, adjusting to changing conditions unattended. 3. For each point under control, establish and modify:

a. Occupancy period. b. Desired temperature at beginning of occupancy period. c. Desired temperature at end of occupancy period.

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F. Night Setback/Setup Program: Reduce heating space temperature set point or raise cooling space temperature set-point during unoccupied hours; in conjunction with scheduled start/stop and optimum start/stop programs.

G. Calculated Points: Define calculations and totals computed from monitored points (analog/digital points), constants, or other calculated points. 1. Employ arithmetic, algebraic, Boolean, and special function operations. 2. Treat calculated values like any other analog value; use for any function where a

"hard wired point" might be used.

H. Event Initiated Programming: Any data point capable of initiating event, causing series of controls in a sequence. 1. Define time interval between each control action between 0 to 3600 seconds. 2. Output may be analog value. 3. Provide for "skip" logic. 4. Verify completion of one action before proceeding to next action. When not

verified, program capable of skipping to next action.

I. Direct Digital Control: Furnish with each control unit Direct Digital Control software so operator is capable of customizing control strategies and sequences of operation by defining appropriate control loop algorithms and choosing optimum loop parameters. 1. Control loops: Defined using "modules" are analogous to standard control

devices. 2. Output: Paired or individual digital outputs for pulse width modulation, and

analog outputs. 3. Firmware:

a. PID with analog or pulse-width modulation output. b. Floating control with pulse-width modulated outputs. c. Two-position control. d. Primary and secondary reset schedule selector. e. Hi/Low signal selector. f. Single pole double-throw relay. g. Single pole double throw time delay relay with delay before break, delay

before make and interval time capabilities. 4. Direct Digital Control loop: Downloaded upon creation or on operator request.

On sensor failure, program executes user defined failsafe output. 5. Display: Value or state of each of lines interconnecting DDC modules.

J. Fine Tuning Direct Digital Control PID or floating loops: 1. Display information:

a. Control loop being tuned. b. Input (process) variable. c. Output (control) variable. d. Set-point of loop. e. Proportional band. f. Integral (reset) Interval. g. Derivative (rate) Interval.

2. Display format: Graphic, with automatic scaling; with input and output variable superimposed on graph of "time" versus "variable".

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K. Trend logging: 1. Each control unit capable of storing samples of control unit's data points. 2. Update file continuously at operator assigned intervals. 3. Automatically initiate upload requests and then stores data on hard disk. 4. Time synchronize sampling at operator specified times and intervals with sample

resolution of one minute. 5. Co-ordinate sampling with specified on/off point- state. 6. Display trend samples on workstation in graphic format. Automatically scale

trend graph with minimum 60 samples of data in plot of time versus data.

2.7 HVAC CONTROL PROGRAMS

A. General: 1. Support Inch-pounds and S.I. metric units of measurement. 2. Identify each HVAC Control system.

B. Optimal Run Time: 1. Control start-up and shutdown times of HVAC equipment for both heating and

cooling. 2. Base on occupancy schedules, outside air temperature, seasonal requirements,

and interior room mass temperature. 3. Start-up systems by using outside air temperature, room mass temperatures, and

adaptive model prediction for how long building takes to warm up or cool down under different conditions.

4. Use outside air temperature to determine early shut down with ventilation override.

5. Analyze multiple building mass sensors to determine seasonal mode and worse case condition for each day.

6. Operator commands: a. Define term schedule. b. Add/delete fan status point. c. Add/delete outside air temperature point. d. Add/delete mass temperature point. e. Define heating/cooling parameters. f. Define mass sensor heating/cooling parameters. g. Lock/unlock program. h. Request optimal run-time control summary. i. Request optimal run-time mass temperature summary. j. Request HVAC point summary. k. Request HVAC saving profile summary.

7. Control Summary: a. HVAC Control system begin/end status. b. Optimal run time lock/unlock control status. c. Heating/cooling mode status. d. Optimal run time schedule. e. Start/Stop times. f. Selected mass temperature point ID. g. Optimal run-time system normal start-times.

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h. Occupancy and vacancy times. i. Optimal run time system heating/cooling mode parameters.

8. Mass temperature summary: a. Mass temperature point type and ID. b. Desired and current mass temperature values. c. Calculated warm-up/cool-down time for each mass temperature. d. Heating/cooling season limits. e. Break point temperature for cooling mode analysis.

9. HVAC point summary: a. Control system identifier and status. b. Point ID and status. c. Outside air temperature point ID and status. d. Mass temperature point ID and status. e. Calculated optimal start and stop times. f. Period start.

C. Supply Air Reset: 1. Monitor heating and cooling loads in building spaces, terminal reheat systems,

single zone unit discharge temperatures. 2. Adjust discharge temperatures to most energy efficient levels satisfying

measured load by: a. Raising cooling temperatures to highest possible value. b. Reducing heating temperatures to lowest possible level.

3. Operator commands: a. Add/delete fan status point. b. Lock/unlock program. c. Request HVAC point summary. d. Add/Delete discharge controller point. e. Define discharge controller parameters. f. Add/delete air flow rate. g. Define space load and load parameters. h. Request space load summary.

4. Control summary: a. HVAC control system status (begin/end). b. Supply air reset system status. c. Optimal run time system status. d. Heating and cooling loop. e. High/low limits. f. Deadband. g. Response timer. h. Reset times.

5. Space load summary: a. HVAC system status. b. Optimal run time status. c. Heating/cooling loop status. d. Space load point ID. e. Current space load point value. f. Control heat/cool limited.

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g. Gain factor. h. Calculated reset values. i. Fan status point ID and status. j. Control discharge temperature point ID and status. k. Space load point ID and status. l. Airflow rate point ID and status.

D. Enthalpy Switchover: 1. Calculate outside and return air enthalpy using measured temperature and relative

humidity; determine energy expended and control outside and return air dampers. 2. Operator commands:

a. Add/delete fan status point. b. Add/delete outside air temperature point. c. Add/delete discharge controller point. d. Define discharge controller parameters. e. Add/delete return air temperature point. f. Add/delete outside air dewpoint/humidity point. g. Add/delete return air dewpoint/humidity point. h. Add/delete damper switch. i. Add/delete minimum outside air. j. Add/delete atmospheric pressure. k. Add/delete heating override switch. l. Add/delete evaporative cooling switch. m. Add/delete air flow rate. n. Define enthalpy deadband. o. Lock/unlock program. p. Request control summary. q. Request HVAC point summary.

3. Control summary: a. HVAC control system begin/end status. b. Enthalpy switchover optimal system status. c. Optimal return time system status. d. Current outside air enthalpy. e. Calculated mixed air enthalpy. f. Calculated cooling cool enthalpy using outside air. g. Calculated cooling cool enthalpy using mixed air. h. Calculated enthalpy difference. i. Enthalpy switchover deadband. j. Status of damper mode switch.

2.8 CHILLER CONTROL PROGRAMS

A. Control function of condenser water reset, chilled water reset, and chiller sequencing. Support inch-pounds and S.I. metric units of measurement.

B. Condenser Water Reset: Automatically reset controlled condenser water temperature using measured outside wet bulb temperature and load being handled.

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C. Chilled Water Reset: Automatically reset controlled chilled water temperature satisfying cooling coil requiring greatest cooling.

D. Chiller Sequencing: Determine combination of chillers most efficiently satisfies chilled water load, by cycling chillers, based on comparing load to switchover limits defined for each chiller.

2.9 PROGRAMMING APPLICATION FEATURES

A. Trend Point: 1. Sample points, real or computed, with each point capable of collecting samples at

intervals specified in minutes, hours, days, or month. 2. Output trend logs as line-graphs or bar graphs. Output graphic on terminal, with

each point for line and bar graphs designated with a unique [pattern] [color], vertical scale either actual values or percent of range, and horizontal scale time base. Print trend logs up to 12 columns of one point/column.

B. Alarm Messages: 1. Allow definition of messages. 2. Assign alarm messages to system messages including point's alarm condition,

point's off-normal condition, totaled point's warning limit, hardware elements advisories.

3. Output assigned alarm with "message requiring acknowledgment". 4. Operator commands include define, modify, or delete; output summary listing

current alarms and assignments; output summary defining assigned points.

C. Weekly Scheduling: 1. Automatically initiate equipment or system commands, based on selected time

schedule for points specified. 2. Program times for each day of week, for each point, with one minute resolution. 3. Automatically generate alarm output for points not responding to command. 4. Allow for holidays, minimum of 366 consecutive holidays. 5. Operator commands:

a. System logs and summaries. b. Start of stop point. c. Lock or unlock control or alarm input. d. Add, delete, or modify analog limits and differentials. e. Adjust point operation position. f. Change point operational mode. g. Open or close point. h. Enable/disable, lock/unlock, or execute interlock sequence or

computation profile. i. Begin or end point totals. j. Modify total values and limits. k. Access or secure point. l. Begin or end HVAC or load control system. m. Modify load parameter. n. Modify demand limiting and duty cycle targets.

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6. Output summary: Listing of programmed function points, associated program times, and respective day of week programmed points by software groups or time of day.

D. Interlocking: 1. Permit events to occur, based on changing condition of one or more associated

master points. 2. Binary contact, high/low limit of analog point or computed point capable of

being used as master. Master capable of monitoring or commanding multiple slaves.

3. Operator commands: a. Define single master/multiple master interlock process. b. Define logic interlock process. c. Lock/unlock program. d. Enable/disable interlock process. e. Execute terminate interlock process. f. Request interlock type summary.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify conditioned power supply is available to control units and to operator workstation.

B. Verify field end devices, wiring, and pneumatic tubing is installed prior to installation proceeding.

3.2 INSTALLATION

A. Install control units and other hardware in position on permanent walls where not subject to excessive vibration.

B. Install software in control units and in operator workstation. Implement features of programs to specified requirements and appropriate to sequence of operation.

C. Install with 120 volts alternating current, 15 amp dedicated emergency power circuit to each programmable control unit.

D. Install electrical material and installation in accordance with appropriate requirements of Electrical Code.

3.3 MANUFACTURER'S FIELD SERVICES

A. Start and commission systems. Allow adequate time for start-up and commissioning prior to placing control systems in permanent operation.

B. Furnish service technician employed by system installer to instruct Owner's representative in operation of systems plant and equipment for 3 day period.

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3.4 DEMONSTRATION AND TRAINING

A. Furnish basic operator training for 2 persons on data display, alarm and status descriptors, requesting data, execution commands and log requests. Include a minimum of 40 hours instructor time. Furnish training on site.

B. Demonstrate complete and operating system to Owner.

END OF SECTION

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Sequence of Operations for HVAC Controls 15940 - 1

SECTION 15940

SEQUENCE OF OPERATION FOR SURGICAL AREA (CH-1, AHU 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, EF-1, 2, 3, 4)

1.1 SUMMARY

A. Section includes sequence of operation for: 1. Central chiller systems. 2. Central fan systems. 3. Exhaust fans. 4. Humidifiers.

1.2 SUBMITTALS

A. Shop Drawings: Indicate mechanical system controlled and control system components. 1. Label with settings, adjustable range of control and limits. Submit written

description of control sequence. 2. Submit flow diagrams for each control system, graphically depicting control

logic. 3. Submit draft copies of graphic displays indicating mechanical system

components, control system components, and controlled function status and value.

1.3 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of components and set points of controls, including changes to sequences made after submission of shop drawings.

PART 2 PRODUCTS

Not Used.

PART 3 EXECUTION

3.1 CENTRAL CHILLER SYSTEMS

A. The building automation system (BAS) controller provides stand-alone control and provides start/stop control for the chilled water pumps and controls the chilled water bypass valve to maintain minimum flow through operating chillers.

B. The chilled water system shall be enabled on a contact closure from system chiller. When enabled, the BAS controller shall start the chiller and associated chilled water pump. When the chilled water system is disabled, the chilled water pump shall be off unless requested by the chiller.

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C. The BAS controller shall start the chilled water pump through a contact closure of the pumps variable frequency drive (vfd) run-enable contacts.

D. Chilled water pump status: the BAS controller shall detect chilled water pump run status by a vfd current switch.

E. Chilled water pump failure: if the pump start/stop relay is enabled and the current switch status is off for more than 30 seconds (adj.), the BAS controller shall annunciate a chilled water pump failure alarm to the BAS. Once the problem has been corrected, the operator shall be able to clear the alarm failure from the BAS controller, from a BAS or by manually overriding the pump on momentarily.

F. Chilled water pump speed: the BAS controller shall monitor the chilled water system differential pressure sensor. When the pump variable frequency drive is enabled, the BAS controller shall control the analog speed signal that is sent to the pump variable frequency drive to maintain a chilled water differential pressure setpoint of 15.0 psig (adj.).

G. Bypass valve control: the BAS controller shall monitor the evaporator differential pressure of the chiller. When the pressure of the chiller indicates a low pressure (flow), the BAS controller shall control the analog signal that is sent to the bypass valve to maintain minimum pressure (flow) on the operating chillers.

3.2 CENTRAL FAN SYSTEMS

A. Building automation system interface: the building automation system (BAS) shall send the controller occupied bypass, morning warm-up/pre-cool, occupied/unoccupied and heat/cool modes. If a BAS is not present, or communication is losted with the BAS the controller shall operate using default modes and setpoints.

B. Occupied (Non-Humidity Control): during occupied periods, the supply fan shall run continuously and the outside air damper shall open to maintain minimum ventilation requirements. The chilled water valve shall modulate and the electric heat shall stage to maintain the discharge air temperature setpoint. If economizing is enabled the outside air damper shall modulate to maintain the discharge air temperature setpoint. The discharge air temperature setpoint shall be dynamically reset based on the deviation of actual space temperature from the active space temperature setpoint. If the discharge air temperature sensor fails, the chilled water valve shall modulate and electric heat shall stage to maintain the active space temperature setpoint and an alarm shall be annunciated at the BAS. If the discharge air temperature sensor and the space temperature sensor fail the chilled water valve shall close and electric heat shall be disabled and an alarm shall be annunciated at the BAS.

C. Unoccupied: when the space temperature is below the unoccupied heating setpoint of 60.0 deg. F (adj.) the supply fan shall start, the outside air damper shall remain closed and the electric heat shall be enabled. When the space temperature rises above the unoccupied heating setpoint of 60.0 deg. F (adj.) plus the unoccupied differential of 4.0 deg. F (adj.) the supply fan shall stop and the electric heat shall be disabled. When the space temperature is above the unoccupied cooling setpoint of 85.0 deg. F (adj.) The supply fan

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shall start, the outside air damper shall open if economizing is enabled and remain closed if economizing is disabled and the chilled water valve shall open. When the space temperature falls below the unoccupied cooling setpoint of 85.0 deg. F (adj.) minus the unoccupied differential of 4.0 deg. F (adj.) the supply fan shall stop, the chilled water valve shall close and the outside air damper shall close.

D. Optimal start: the BAS shall monitor the scheduled occupied time, occupied space setpoints, and space temperature to calculate when the optimal start occurs.

E. Morning warm-up mode: during optimal start, if the space temperature is below the occupied heating setpoint a morning warm-up mode shall be activated. When morning warm-up is initiated the unit shall enable the heating and supply fan. The outside air damper shall remain closed. When the space temperature reaches the occupied heating setpoint (adj.), the unit shall transition to the occupied mode.

F. Pre-cool mode: during optimal start, if the space temperature is above the occupied cooling setpoint, pre-cool mode shall be activated. When pre-cool is initiated the unit shall enable the fan and cooling or economizer. The outside air damper shall remain closed, unless economizing. When the space temperature reaches occupied cooling setpoint (adj.), the unit shall transition to the occupied mode.

G. Optimal stop: the BAS shall monitor the scheduled unoccupied time, occupied setpoints, and space temperature to calculate when the optimal stop occurs. When the optimal stop mode is active the unit controller shall maintain the space temperature to the space temperature offset setpoint. Outside air damper shall remain enabled to provide minimum ventilation.

H. Occupied bypass: the BAS shall monitor the status of the “on” and “cancel” buttons of the space temperature sensor. When an occupied bypass request is received from a space sensor, the unit shall transition from its current occupancy mode to occupied bypass mode and the unit shall maintain the space temperature to the occupied setpoints (adj.).

I. Heat/cool mode: when the space temperature rises above the occupied cooling setpoint the mode shall transition to cooling. When the space temperature falls below the occupied heating setpoint the mode shall transition to heating. When the space temperature is above the occupied cooling setpoint or below the occupied heating setpoint the mode shall remain in its last state. If the space temperature sensor fails the mode shall remain in its last state and an alarm shall be annunciated at the BAS. If the local and communicated setpoints fail the controller shall disable the supply fan and an alarm shall be annunciated at the BAS.

J. Supply air temperature reset control (Non-Humidity Control): on a rise in space temperature (+2.0 deg. F adj. Or greater) above the space cooling setpoint (68 - 72 deg. F adj.); the supply fan speed shall maintain design air flow and modulate the chilled water valve to maintain space cooling temperature setpoint while keeping the discharge air temperature setpoint at minimum (55.0 deg. F adj.). As space temperature decreases below space cooling setpoint (- 2.0 deg. F); the fan speed shall maintain design air flow and the discharge air temperature setpoint remains at minimum. When space temperature decreases to 69 deg. F (cooling setpoint + 1.0 deg. F) or below for a period of time

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(default 1 min. Adj.); the fan speed shall remain, the discharge air temperature setpoint remains at minimum, and control enters into discharge air temperature setpoint reset mode. As space temperature continues to drop below 69.0 deg. F (space temperature cooling setpoint + 1.0 deg. F); the fan speed shall remain at design air flow and the discharge air temperature setpoint shall be reset from minimum (55.0 deg. F adj.) to a maximum (65.0 deg. F adj.) as space temperature drops from 69.0 deg. F to 68.0 deg. F to maintain the space cooling temperature setpoint. On a continued drop of space temperature below the space cooling temperature setpoint (68.0 deg. F adj.) through (65.0 deg. F adj.) The space temperature control shall be within its deadband; the fan speed remains at design and discharge air setpoint of (65.0 deg. F adj.) For cooling. As space temperature decreases to the heating setpoint (65.0 deg. F adj.) The control shall switch to the heating discharge air temperature reset. In the heating mode, the staged heat will be enabled; the supply fan shall remain at design air flow and the discharge air temperature setpoint shall be reset from 65.0 deg. F to 85.0 deg. F as the space temperature drops from 65.0 deg. F to 64.0 deg. F. As space temperature continues to decrease to heating setpoint (65.0 deg. F adj.) - 1.0 deg. F; the discharge air temperature setpoint shall remain at maximum (85.0 deg. F adj.) and the fan shall maintain design air flow. When the space temperature increases the reverse control shall be implemented.

K. Occupied humidity control: if the space relative humidity is greater than 50% (adj.), the chilled water valve shall modulate to maintain space relative humidity setpoint of 50% (adj.) and the electric heat shall stage to maintain the discharge air temperature setpoint. Humidity control mode shall terminate when the space relative humidity falls below the relative humidity setpoint of 50% (adj.) Minus 3% (adj.). If the space relative humidity is less than 30% (adj.), the electric steam humidifier shall modulate to maintain space relative humidity setpoint of 30% (adj.). If the space relative humidity sensor fails the dehumidification and humidification sequence shall be terminated and an alarm shall be annunciated at the BAS.

L. Economizer: the discharge air temperature sensor shall measure the dry bulb temperature of the air leaving the cooling coil while economizing. When economizing is enabled and the unit is operating in the cooling mode, the economizer damper shall be modulated between its minimum position and 100% to maintain the space temperature setpoint. The economizer damper shall modulate toward minimum position in the event the mixed air temperature falls below the low temperature limit setting.

M. Comparative enthalpy: outside air (OA) enthalpy shall be compared with return air (RA) enthalpy point. The economizer shall enable when OA enthalpy is less than RA enthalpy - 2.0 btu/lb. The economizer shall disable when OA enthalpy is greater than RA enthalpy.

N. Supply fan: the supply fan shall be enabled while in the occupied mode and cycled on during the unoccupied mode. The unit controller shall vary the supply fan speed to maintain a constant design airflow in all cooling and heating modes. A differential pressure switch shall monitor the differential pressure across the fan. If the switch does not open within 40 seconds after a request for fan operation a fan failure alarm shall be annunciated, the unit shall stop, requiring a manual reset.

O. Exhaust/Return fan: the exhaust/return fan shall be enabled while in the occupied or unoccupied mode. The unit controller shall vary the fan speed to maintain a constant

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building pressure of .05 inches wg. A differential pressure switch shall monitor the differential pressure between indoors and outdoors. If the switch does not open within 40 seconds after a request for fan operation a fan failure alarm shall be annunciated and require a manual reset.

P. Mixed air low limit: the initial damper opening rate shall be limited to 2% per minute (adj.) until the damper has reached its minimum ventilation position. The outside air damper shall modulate to a position less than the minimum damper position if the mixed air temperature drops below 48.0 deg. F (adj.). If the mixed air temperature sensor fails an alarm shall be annunciated at the BAS and the outside air damper shall return to the minimum position.

Q. Freeze protection: a hardwired, low limit temperature switch shall be electrically interlocked with the variable speed drive. If the low limit temperature switch is tripped 38.0 deg. F (adj.), the outside air damper shall close, all valves shall open to 100% (adjust per climate), the electric heat shall be disabled and an alarm shall be annunciated at the BAS. A manual reset of the low limit temperature switch shall be required to restart the fan.

R. (AHU 1-1 and AHU 1-2 Only) Smoke detector shutdown: the unit shall shut down in response to a signal from the smoke detector indicating the presence of smoke. The smoke detector for AHU 1-1shall be interlocked with exhaust fan (EF-1), smoke detector for AHU 1-2 shall be interlocked with exhaust fan (EF-2), through the dry contact of the solid state controller. EF-1 and EF-2 shall run until disabled. A manual reset of the smoke detector shall be required to restart the unit.

S. Filter status: a differential pressure switch shall monitor the differential pressure across each filter bank when the fan is running. If the switch closes during normal operation a dirty filter alarm shall be annunciated at the BAS.

3.3 EXHAUST FANS

A. Exhaust fan (EF-3) is to be tied into BAS system through the dry contact of the solid state controller and shall run in occupied mode.

B. Exhaust fan (EF-4) is to be tied into BAS system through the dry contact of the solid state controller and shall run continuously in all modes of operation.

3.4 HUMIDIFIERS

A. When supply fan is running and airflow switch proves airflow, humidifier to maintain humidity level above 30 percent.

END OF SECTION

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Testing, Adjusting, and Balancing for HVAC 15950 - 1

SECTION 15950

TESTING, ADJUSTING, AND BALANCING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Testing, adjusting, and balancing of air systems. 2. Testing, adjusting, and balancing of hydronic systems. 3. Measurement of final operating condition of HVAC systems.

1.2 REFERENCES

A. Associated Air Balance Council: 1. AABC MN-1 - National Standards for Testing and Balancing Heating,

Ventilating, and Air Conditioning Systems.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers: 1. ASHRAE 111 - Practices for Measurement, Testing, Adjusting and Balancing of

Building Heating, Ventilation, Air-Conditioning and Refrigeration Systems.

C. Natural Environmental Balancing Bureau: 1. NEBB - Procedural Standards for Testing, Adjusting, and Balancing of

Environmental Systems.

1.3 SUBMITTALS

A. Prior to commencing Work, submit proof of latest calibration date of each instrument.

B. Test Reports: Indicate data on AABC MN-1 National Standards for Total System Balance forms or NEBB Report forms.

C. Field Reports: Indicate deficiencies preventing proper testing, adjusting, and balancing of systems and equipment to achieve specified performance.

D. Prior to commencing Work, submit report forms or outlines indicating adjusting, balancing, and equipment data required. Include detailed procedures, agenda, sample report forms and copy of AABC National Project Performance Guaranty or Copy of NEBB Certificate of Conformance Certification.

E. Submit draft copies of report for review prior to final acceptance of Project.

F. Furnish reports in soft cover, binder manuals, complete with table of contents page and indexing tabs, with cover identification at front and side. Include set of reduced drawings with air outlets and equipment identified to correspond with data sheets, and indicating thermostat locations.

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1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of flow measuring stations, balancing valves, and rough setting.

B. Operation and Maintenance Data: Furnish final copy of testing, adjusting, and balancing report inclusion in operating and maintenance manuals.

1.5 QUALITY ASSURANCE

A. Perform Work in accordance with AABC MN-1 National Standards for Field Measurement and Instrumentation, Total System Balance or NEBB Procedural Standards for Testing, Balancing and Adjusting of Environmental Systems.

B. Prior to commencing Work, calibrate each instrument to be used. Upon completing Work, recalibrate each instrument to assure reliability.

1.6 QUALIFICATIONS

A. Agency: Company specializing in testing, adjusting, and balancing of systems specified in this section with minimum three years documented experience certified by AABC Certified by NEBB.

B. Perform Work under supervision of AABC Certified Test and Balance Engineer NEBB Certified Testing, Balancing and Adjusting Supervisor licensed in State of Arizona.

1.7 PRE-INSTALLATION MEETINGS

A. Convene minimum one week prior to commencing work of this section.

1.8 SEQUENCING

A. Sequence balancing between completion of systems tested and Date of Substantial Completion.

1.9 SCHEDULING

A. Schedule and provide assistance in final adjustment and test of life safety, smoke evacuation, smoke control system with Fire Authority.

PART 2 PRODUCTS

Not Used.

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PART 3 EXECUTION

3.1 EXAMINATION

A. Verify systems are complete and operable before commencing work. Verify the following: 1. Systems are started and operating in safe and normal condition. 2. Temperature control systems are installed complete and operable. 3. Proper thermal overload protection is in place for electrical equipment. 4. Final filters are clean and in place. If required, install temporary media in

addition to final filters. 5. Duct systems are clean of debris. 6. Fans are rotating correctly. 7. Fire and volume dampers are in place and open. 8. Air coil fins are cleaned and combed. 9. Access doors are closed and duct end caps are in place. 10. Air outlets are installed and connected. 11. Duct system leakage is minimized. 12. Hydronic systems are flushed, filled, and vented. 13. Pumps are rotating correctly. 14. Proper strainer baskets are clean and in place or in normal position. 15. Service and balancing valves are open.

3.2 PREPARATION

A. Furnish instruments required for testing, adjusting, and balancing operations.

B. Make instruments available to Architect/Engineer to facilitate spot checks during testing.

3.3 INSTALLATION TOLERANCES

A. Air Handling Systems: Adjust to within plus or minus 10 percent of design.

B. Air Outlets and Inlets: Adjust total to within plus 10 percent and minus 5 percent of design to space. Adjust outlets and inlets in space to within plus or minus 10 percent of design.

C. Hydronic Systems: Adjust to within plus or minus 10 percent of design.

3.4 ADJUSTING

A. Verify recorded data represents actual measured or observed conditions.

B. Permanently mark settings of valves, dampers, and other adjustment devices allowing settings to be restored. Set and lock memory stops.

C. After adjustment, take measurements to verify balance has not been disrupted. If disrupted, verify correcting adjustments have been made.

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D. Report defects and deficiencies noted during performance of services, preventing system balance.

E. Leave systems in proper working order, replacing belt guards, closing access doors, closing doors to electrical switch boxes, and restoring thermostats to specified settings.

F. At final inspection, recheck random selections of data recorded in report. Recheck points or areas as selected and witnessed by Engineer.

3.5 AIR SYSTEM PROCEDURE

A. Adjust air handling and distribution systems to obtain required or design supply, return, and exhaust air quantities.

B. Make air quantity measurements in main ducts by Pitot tube traverse of entire cross sectional area of duct.

C. Measure air quantities at air inlets and outlets.

D. Adjust distribution system to obtain uniform space temperatures free from objectionable drafts.

E. Use volume control devices to regulate air quantities only to extent adjustments do not create objectionable air motion or sound levels. Effect volume control by using volume dampers located in ducts.

F. Vary total system air quantities by adjustment of fan speeds. Provide sheave drive changes to vary fan speed. Vary branch air quantities by damper regulation.

G. Provide system schematic with required and actual air quantities recorded at each outlet or inlet.

H. Measure static air pressure conditions on air supply units, including filter and coil pressure drops, and total pressure across fan. Make allowances for 50 percent loading of filters.

I. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for design conditions.

J. Measure temperature conditions across outside air, return air, and exhaust dampers to check leakage.

K. At modulating damper locations, take measurements and balance at extreme conditions. Balance variable volume systems at maximum airflow rate, full cooling, and at minimum airflow rate, full heating.

L. Measure building static pressure and adjust supply, return, and exhaust air systems to obtain required relationship between each to maintain approximately 0.05 inches positive

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static pressure near building entries, and in operating rooms, clean rooms, and other critical areas.

M. Check multi-zone units for motorized damper leakage. Adjust air quantities with mixing dampers set first for cooling, then heating, then modulating.

N. For variable air volume system powered units set volume controller to airflow setting indicated. Confirm connections properly made and confirm proper operation for automatic variable-air-volume temperature control.

3.6 WATER SYSTEM PROCEDURE

A. Adjust water systems, after air balancing, to obtain design quantities.

B. Use calibrated Venturi tubes, orifices, or other metered fittings and pressure gauges to determine flow rates for system balance. Where flow-metering devices are not installed, base flow balance on temperature difference across various heat transfer elements in system.

C. Adjust systems to obtain specified pressure drops and flows through heat transfer elements prior to thermal testing. Perform balancing by measurement of temperature differential in conjunction with air balancing.

D. Effect system balance with automatic control valves fully open or in normal position to heat transfer elements.

E. Effect adjustment of water distribution systems by means of balancing cocks, valves, and fittings. Do not use service or shut-off valves for balancing unless indexed for balance point.

F. Where available pump capacity is less than total flow requirements or individual system parts, simulate full flow in one part by temporary restriction of flow to other parts.

3.7 SCHEDULES

A. Equipment Requiring Testing, Adjusting, and Balancing: 1. Plumbing Pumps. 2. HVAC Pumps. 3. Air Cooled Water Chillers. 4. Air Coils. 5. Evaporative Humidifier. 6. Fan Coil Units. 7. Air Handling Units. 8. Fans. 9. Air Filters. 10. Air Inlets and Outlets.

B. Report Forms 1. Title Page:

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a. Name of Testing, Adjusting, and Balancing Agency b. Address of Testing, Adjusting, and Balancing Agency c. Telephone and facsimile numbers of Testing, Adjusting, and Balancing

Agency d. Project name e. Project location f. Project Architect g. Project Engineer h. Project Contractor i. Project altitude j. Report date

2. Summary Comments: a. Design versus final performance b. Notable characteristics of system c. Description of systems operation sequence d. Summary of outdoor and exhaust flows to indicate building

pressurization e. Nomenclature used throughout report f. Test conditions

3. Instrument List: a. Instrument b. Manufacturer c. Model number d. Serial number e. Range f. Calibration date

4. Electric Motors: a. Manufacturer b. Model/Frame c. HP/BHP and kW d. Phase, voltage, amperage; nameplate, actual, no load e. RPM f. Service factor g. Starter size, rating, heater elements h. Sheave Make/Size/Bore

5. V-Belt Drive: a. Identification/location b. Required driven RPM c. Driven sheave, diameter and RPM d. Belt, size and quantity e. Motor sheave diameter and RPM f. Center to center distance, maximum, minimum, and actual

6. Pump Data: a. Identification/number b. Manufacturer c. Size/model d. Impeller e. Service

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f. Design flow rate, pressure drop, BHP and kW g. Actual flow rate, pressure drop, BHP and kW h. Discharge pressure i. Suction pressure j. Total operating head pressure k. Shut off, discharge and suction pressures l. Shut off, total head pressure

7. Air Cooled Condenser: a. Identification/number b. Location c. Manufacturer d. Model number e. Serial number f. Entering DB air temperature, design and actual g. Leaving DB air temperature, design and actual h. Number of compressors

8. Chillers: a. Identification/number b. Manufacturer c. Capacity d. Model number e. Serial number f. Evaporator entering water temperature, design and actual g. Evaporator leaving water temperature, design and actual h. Evaporator pressure drop, design and actual i. Evaporator water flow rate, design and actual j. Condenser entering water temperature, design and actual k. Condenser pressure drop, design and actual l. Condenser water flow rate, design and actual

9. Cooling Coil Data: a. Identification/number b. Location c. Service d. Manufacturer e. Air flow, design and actual f. Entering air DB temperature, design and actual g. Entering air WB temperature, design and actual h. Leaving air DB temperature, design and actual i. Leaving air WB temperature, design and actual j. Water flow, design and actual k. Water pressure drop, design and actual l. Entering water temperature, design and actual m. Leaving water temperature, design and actual n. Saturated suction temperature, design and actual o. Air pressure drop, design and actual

10. Electric Duct Heater: a. Manufacturer b. Identification/number

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c. Location d. Model number e. Design kW f. Number of stages g. Phase, voltage, amperage h. Test voltage (each phase) i. Test amperage (each phase) j. Air flow, specified and actual k. Temperature rise, specified and actual

11. Air Moving Equipment: a. Location b. Manufacturer c. Model number d. Serial number e. Arrangement/Class/Discharge f. Air flow, specified and actual g. Return air flow, specified and actual h. Outside air flow, specified and actual i. Total static pressure (total external), specified and actual j. Inlet pressure k. Discharge pressure l. Sheave Make/Size/Bore m. Number of Belts/Make/Size n. Fan RPM

12. Return Air/Outside Air Data: a. Identification/location b. Design air flow c. Actual air flow d. Design return air flow e. Actual return air flow f. Design outside air flow g. Actual outside air flow h. Return air temperature i. Outside air temperature j. Required mixed air temperature k. Actual mixed air temperature l. Design outside/return air ratio m. Actual outside/return air ratio

13. Exhaust Fan Data: a. Location b. Manufacturer c. Model number d. Serial number e. Air flow, specified and actual f. Total static pressure (total external), specified and actual g. Inlet pressure h. Discharge pressure i. Sheave Make/Size/Bore

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j. Number of Belts/Make/Size k. Fan RPM

14. Duct Traverse: a. System zone/branch b. Duct size c. Area d. Design velocity e. Design air flow f. Test velocity g. Test air flow h. Duct static pressure i. Air temperature j. Air correction factor

15. Duct Leak Test: a. Description of ductwork under test b. Duct design operating pressure c. Duct design test static pressure d. Duct capacity, air flow e. Maximum allowable leakage duct capacity times leak factor f. Test apparatus

1) Blower 2) Orifice, tube size 3) Orifice size 4) Calibrated

g. Test static pressure h. Test orifice differential pressure i. Leakage

16. Air Monitoring Station Data: a. Identification/location b. System c. Size d. Area e. Design velocity f. Design air flow g. Test velocity h. Test air flow

17. Flow Measuring Station: a. Identification/number b. Location c. Size d. Manufacturer e. Model number f. Serial number g. Design Flow rate h. Design pressure drop i. Actual/final pressure drop j. Actual/final flow rate k. Station calibrated setting

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18. Air Distribution Test Sheet: a. Air terminal number b. Room number/location c. Terminal type d. Terminal size e. Area factor f. Design velocity g. Design air flow h. Test (final) velocity i. Test (final) air flow j. Percent of design air flow

END OF SECTION

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Commissioning of HVAC 15992 - 1

SECTION 15992 HVAC COMMISSIONING FOR SURGICAL AREA (CH-1, AHU 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, EF-1, 2, 3, 4)

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. HVAC commissioning responsibilities.

1.2 REFERENCES

A. Associated Air Balance Council: 1. AABC - AABC Commissioning Guideline.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers: 1. ASHRAE Guideline 1 - The HVAC Commissioning Process.

C. National Environmental Balancing Bureau: 1. NEBB - Procedural Standards for Building Systems Commissioning.

1.3 COMMISSIONING DESCRIPTION

A. HVAC commissioning process includes the following tasks: 1. Testing and startup of HVAC equipment and systems. 2. Equipment and system verification checks. 3. Functional performance testing to verify testing and balancing, and equipment

and system performance. 4. Provide qualified personnel to assist in commissioning tests, including seasonal

testing. 5. Complete and endorse functional performance test checklists provided by

manufacturer or installing contractor to assure equipment and systems are fully operational and ready for functional performance testing.

6. Provide equipment, materials, and labor necessary to correct deficiencies found during commissioning process to fulfill contract and warranty requirements.

7. Provide operation and maintenance information and record drawings to Commissioning Authority for review verification and organization, prior to distribution.

8. Provide training for systems specified in this Section with review by Commissioning Authority.

B. Equipment and Systems to Be Commissioned: 1. Chillers. 2. Pumps. 3. Piping systems. 4. Ductwork. 5. Variable frequency drives.

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6. Split system air conditioning units. 7. Humidifiers. 8. Air handling units. 9. Air handling unit duct system. 10. Fan Coil Units. 11. Electric terminal heating equipment. 12. Computer room units. 13. Data room units. 14. Fans. 15. Laboratory room pressures. 16. Specialty fans. 17. Indoor air quality. 18. Egress pressurization. 19. Smoke evacuation system. 20. Automatic temperature control system. 21. Testing, Adjusting and Balancing work.

C. Perform seasonal function performance tests for the following equipment and systems: 1. Any equipment locked out due to ambient temperatures during initial tests.

1.4 COMMISSIONING SUBMITTALS

A. Draft Forms: Submit draft of system verification form, functional performance test checklist and manufacture’s installation and start-up documentation.

B. Test Reports: Indicate data on system verification form for each piece of equipment and system as specified.

C. Field Reports: Indicate deficiencies preventing completion of equipment or system verification checks equipment or system to achieve specified performance.

1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record revisions to equipment and system documentation necessitated by commissioning.

B. Operation and Maintenance Data: Submit revisions to operation and maintenance manuals when necessary revisions are discovered during commissioning.

1.6 QUALITY ASSURANCE

A. Perform Work in accordance with AABC ASHRAE Guideline 1.

1.7 COMMISSIONING RESPONSIBILITIES

A. Equipment or System Installer Commissioning Responsibilities: 1. Attend commissioning meetings. 2. Ensure temperature controls installer performs assigned commissioning

responsibilities as specified below.

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3. Ensure testing, adjusting, and balancing agency performs assigned commissioning responsibilities as specified.

4. Provide instructions and demonstrations for Owner's personnel. 5. Ensure subcontractors perform assigned commissioning responsibilities. 6. Ensure participation of equipment manufacturers in appropriate startup, testing,

and training activities when required by individual equipment specifications. 7. Develop startup and initial checkout plan using manufacturer’s startup

procedures and functional performance checklists for equipment and systems to be commissioned.

8. During verification check and startup process, execute HVAC related portions of checklists for equipment and systems to be commissioned.

9. Perform and document completed startup and system operational checkout procedures, providing copy to Commissioning Authority.

10. Provide manufacturer’s representatives to execute starting of equipment. Ensure representatives are available and present during agreed upon schedules and are in attendance for duration to complete tests, adjustments and problem-solving.

11. Coordinate with equipment manufacturers to determine specific requirements to maintain validity of warranties.

12. Provide personnel to assist Commissioning Authority during equipment or system verification checks and functional performance tests.

13. Prior to functional performance tests, review test procedures to ensure feasibility, safety and equipment protection and provide necessary written alarm limits to be used during tests.

14. Prior to startup, inspect, check, and verify correct and complete installation of equipment and system components for verification checks included in commissioning plan. When deficient or incomplete work is discovered, ensure corrective action is taken and re-check until equipment or system is ready for startup.

15. Provide factory supervised startup services for equipment and systems. Coordinate work with manufacturer and Commissioning Authority.

16. Perform verification checks and startup on equipment and systems as specified. 17. Assist Commissioning Authority in performing functional performance tests on

equipment and systems as specified. 18. Perform operation and maintenance training sessions scheduled by

Commissioning Authority. 19. Conduct HVAC system orientation and inspection.

B. Temperature Controls Installer Commissioning Responsibilities: 1. Attend commissioning meetings. 2. Review design for ability of systems to be controlled including the following:

a. Confirm proper hardware requirements exists to perform functional performance testing.

b. Confirm proper safeties and interlocks are included in design. c. Confirm proper sizing of system control valves and actuators and control

valve operation will result capacity control identified in Contract Documents.

d. Confirm proper sizing of system control dampers and actuators and damper operation will result in proper damper positioning.

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e. Confirm sensors selected are within device ranges. f. Review sequences of operation and obtain clarification from

Architect/Engineer. g. Indicate delineation of control between packaged controls and building

automation system, listing BAS monitor points and BAS adjustable control points.

h. Provide written sequences of operation for packaged controlled equipment. Equipment manufacturers’ stock sequences may be included, when accompanied by additional narrative to reflect Project conditions.

3. Inspect, check, and confirm proper operation and performance of control hardware and software provided in other HVAC sections.

4. Submit proposed procedures for performing automatic temperature control system point-to-point checks to Commissioning Authority.

5. Inspect check and confirm correct installation and operation of automatic temperature control system input and output device operation through point-to-point checks.

6. Perform training sessions to instruct Owner's personnel in hardware operation, software operation, programming, and application.

7. Demonstrate system performance and operation to Commissioning Authority during functional performance tests including each mode of operation.

8. Provide control system technician to assist during Commissioning Authority verification check and functional performance testing.

9. Provide control system technician to assist testing, adjusting, and balancing agency during performance of testing, adjusting, and balancing work.

10. Assist in performing operation and maintenance training sessions scheduled by Commissioning Authority.

C. Testing, Adjusting, and Balancing Agency Commissioning Responsibilities: 1. Attend commissioning meetings. 2. Participate in verification of testing, adjusting, and balancing report for

verification or diagnostic purposes. Repeat sample of 10 percent of measurements contained in testing, adjusting, and balancing report.

3. Assist in performing operation and maintenance training sessions scheduled by Commissioning Authority.

1.8 COMMISSIONING MEETINGS

A. Attend initial commissioning meeting and progress commissioning meetings as required by Commissioning Authority.

1.9 SCHEDULING

A. Prepare schedule indicating anticipated start dates for the following: 1. Piping system pressure testing. 2. Piping system flushing and cleaning. 3. Ductwork cleaning. 4. Ductwork pressure testing. 5. Equipment and system startups. 6. Automatic temperature control system checkout.

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7. Testing, adjusting, and balancing. 8. HVAC system orientation and inspections. 9. Operation and maintenance manual submittals. 10. Training sessions.

B. Schedule seasonal tests of equipment and systems during peak weather conditions to observe full-load performance.

C. Schedule occupancy sensitive tests of equipment and systems during conditions of both minimum and maximum occupancy or use.

1.10 COORDINATION

A. Notify Commissioning Authority minimum of four weeks in advance of the following: 1. Scheduled equipment and system startups. 2. Scheduled automatic temperature control system checkout. 3. Scheduled start of testing, adjusting, and balancing work.

B. Coordinate programming of automatic temperature control system with construction and commissioning schedules.

PART 2 PRODUCTS

Not Used.

PART 3 EXECUTION

3.1 INSTALLATION

A. Install additional balancing dampers, balancing valves, access doors, test ports, and pressure and temperature taps required by Commissioning Authority.

B. Place HVAC systems and equipment into full operation and continue operation during each working day of commissioning.

C. Install replacement sheaves and belts to obtain system performance, as requested by Commissioning Authority.

D. Install test holes in ductwork and plenums as requested by Commissioning Authority for taking air measurements.

E. Prior to start of functional performance test, install replacement filters in equipment as specified in individual section.

3.2 COMMISSIONING

A. Seasonal Sensitive Functional Performance Tests:

BIO-MEDICAL AND SURGICAL PLAZA JULY 2016 ROUFF ENGINEERING PROJECT # 16-143

Commissioning of HVAC 15992 - 6

1. Test heating equipment at winter design temperatures. 2. Test cooling equipment at summer design temperatures with fully occupied

building. 3. Participate in testing delayed beyond Final Completion to test performance at

peak seasonal conditions.

B. Be responsible to participate in initial and alternate peak season test of systems required to demonstrate performance.

C. Occupancy Sensitive Functional Performance Tests: 1. Test equipment and systems affected by occupancy variations at minimum and

peak loads to observe system performance. 2. Participate in testing delayed beyond Final Completion to test performance with

actual occupancy conditions.

END OF SECTION


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