Roof Mounted Air Handlers · service-ability The flexibility ofDunham-Bush’s modular design...

Form No: USS0107A

FeaturesCompletely factory engineered and assembled

Rugged, weatherproof construction

Flexible modular design

Built for easy servicing

Roof MountedAir Handlers

RT

Products That Perform...By People Who Care

R

INTRODUCTION

Dunham-Bush Rooftop Air Handlers are designed,engineered and manufactured specifically forrooftop installation; to save precious building spaceand reduce installation costs. An excellent record ofperformance in schools, factories, office buildingsand other commercial and industrial applications,has earned Dunham-Bush an unmatchedreputation for cost-effective operation.

Rugged, weatherproof constructionDunham-Bush rooftop air handlers are built toughfrom the inside out, giving you many years ofdependable service with minimal maintenancecosts. These versatile outdoor units are madeentirely of quality, heavy-duty materials, from thewelded support base of 10 gauge galvanized steelto the minimum 16 gauge galvanized steelmembers of the fully framed component sections.Dunham-Bush rooftop air handlers offer theultimate in all-weather protection, and are made toremain absolutely water tight under almost anycondition. They are completely insulated withfiberglass to reduce heat transfer.All exposed panels are made of 18 gauge steel,permanently protected against corrosion with acoating that consists of a galvanized base, andpowder coated with polyester paint. This specialbeige finish has withstood rigorous testing underthe most severe climatic conditions, including thoseat seaside locations. The unit base is painted withPolyurethane paint to provide excellent durabilityand stain resistance.

Totally modular design for flexibility andservice-abilityThe flexibility of Dunham-Bush’s modular designallows a full complement of accessory sections tobe arranged in virtually any combination. Thespecifying engineer can design his air handlingsystem for blow-thru or draw-thru operation, with anexceptional variety of space-saving modules fromwhich to choose. Dunham-Bush rooftop units giveyou the air handling capacities and the extrafeatures you need without wasting valuable indoorspace or knocking your budget for a loop. Full-sized access doors make servicing the unit abreeze, saving many man-hours and minimizingdowntime.

Economizer section provides energy savingsDunham-Bush rooftop units can be ordered witheither of two versions of mixing dampers in theirEconomizer section to provide 0-30% or 0-100%outside air intake, so that full advantage can betaken of outdoor ambient temperatures, resulting inless energy to cool many kinds of buildings.Optional return air fans can also be included.

A Solid Reputation for DependabilityDunham-Bush Rooftop Air Handlers are completelyfactory-engineered and assembled. These units areconstructed from the finest industrial qualitymaterials available, the result of over 40 years ofDunham-Bush design leadership andmanufacturing expertise. Advanced engineeringdesign means lower installation, operating andmaintenance costs, plus years of extra service. Theversatility, economy and dependability of thesespace-saving, low-profile units make them the firstchoice of contractors, owners and engineerseverywhere.Dunham-Bush

Outdoor FinishConventional

Galvanized Finish

500-hour Salt Spray Test(Equivalent to many years of actual

seacoast service)

TABLE OF CONTENTS

Nomenclature.....................................................................................................................................3Standard Features .............................................................................................................................4Construction.......................................................................................................................................6Heating and Cooling Coils ............................................................................................................... 14Nominal Coil Capacities................................................................................................................... 15Air Pressure Drop ........................................................................................................................... 16Selection Procedure ....................................................................................................................... 18Fan Performance Tables: Supply Air Fans................................................................................... 20Fan Performance Tables: Return Air Fans .................................................................................. 27Dimensional Data: Curb Mounted Air Handlers

Air Entering End Sections................................................................... 31Middle Sections................................................................................... 32Air Leaving End Sections ................................................................... 33Duct Opening Locations .................................................................... 34Access Section #13 ............................................................................ 34RT Roof Curb...................................................................................... 35

Electrical Data ................................................................................................................................. 36Weights ............................................................................................................................................ 37Mechanical Specifications ............................................................................................................... 39Physical Data................................................................................................................................... 40

NOMENCLATURE

RT 18 MF

Model Roof Top

Nom. Face Area

Fan TypeMF – Medium Pressure

Forward CurvedMA – Medium Pressure

Airfoil

FORWARD CURVEDFANS AIRFOIL FANS

STANDARD FEATURES

Size RangeØ 7 Unit Sizes from 2000 to 60,000 CFM

RT 08 2000 CFM To 4800 CFMRT 12 4000 CFM To 7200 CFMRT 18 7000 CFM To 10800 CFMRT 26 10000 CFM To 15600 CFMRT 33 12000 CFM To 19800 CFMRT 39 17000 CFM To 23400 CFMRT 48 19000 CFM To 28800 CFM

CFM ranges shown are typical for these sizes.Contact your Dunham-Bush representative foroperation outside of these ratings.

FansØ Forward curved and airfoil fans for operation

from 0” up to 6.0” are available. All units havebeen designed with single fans for quiteperformance and low energy consumption.

Ø All fans are statically and dynamically balanced.After complete unit assembly the wheels areelectronically balanced to the lower vibrationdisplacement (mils).

Ø Fan sections for Sizes 8 thru 48 include aforward curved or airfoil fan, adjustablefan/motor base, motor and drive all built into afan and motor sub-assembly.

Ø The fan and motor sub-assembly is springisolated from the RT cabinet and isolated fromthe ductwork with a flexible connection.

Pillow Block Ball Bearings StandardØ 200,000 Hours Average Life

Internal Spring IsolationØ Spring isolators are selected for optimum

isolation of fan and motor assemblies fromcabinet.

Discharge ArrangementsThe down discharge fan section affords the mostcompact possible design and lowest possible fanhorse power since it avoids the use of a dischargeplenum section. This style of fan section alsoavoids the problems associated with the supplyduct penetrating the roof.

The horizontal discharge fan section is used on theinstallations in which the supply duct is locatedabove the roof level. This is typical of retrofitprojects. The horizontal discharge is also ideal forpier-mounted units.

STANDARD FEATURES

Weatherproofing

From top to bottom our Rooftop Air Handlers aredesigned to prevent entry of water into the unit andinto the space below. Standing flanges, raised 1”above the roof, including weatherproof caps andgasketing, protect the seams between adjoiningroof panels. The top panels are pitched to thecabinet sides with no pockets to collect rain. A1 1/2” overhang is provided so that rainwaterflowing from top panels will not drip onto the doortops. All Dunham-Bush RT air handlers are fullyassembled at the factory with no add-on fieldassembled sections. No field applied caulking isrequired.

Weather Panels

All exposed panels, roof and access doors are of18 gauge steel and are provided with the ultimatein all climate finishes. From the mill-galvanized firstlayer to the powder polyester final coat, thiscombination affords an exceptionally attractiveappearance, while providing maximum corrosionprotection...even at seacoast installations.

This specially finished sheet metal does notdeteriorate or even discolor when subjected toa 500-hour salt spray test. This is equivalent tomany years of actual service on the seacoast.

Unit Floor

The floor of the unit insulated with fiberglassinsulation to reduce heat loss and to preventsweating. Cooling coils have their own insulateddrain pan which drain directly to the outside.

Insulation & Gasketing

Absolute air tightness is assured with gasketingfurnished between all metal-to-metal weathersurfaces. No metal-to-metal contact occurs in theexterior panels and frame. Gasketing is closed cellfoam and far superior to caulking (which quicklybreaks down). All external panels and structuralsupport members are insulated. Standardinsulation is both glued and nailed to insurepermanent bonding.

CONSTRUCTION

Latching HandlesAll access doors are equipped with full size handlesand adjustable - tension latching arm.

Fully Framed ConstructionA support frame is provided such that maximumpanel span, in direction of air flow, is 3 feet. Thiseliminates the bowing of panels have full perimetersupport.

HingesHeavy duty nylon hinges give long rust – free lifeand provide rigidity to the RT full size doors.

Safety Guard (Optional)The expanded open grid metal safety guard is builtto conform to OSHA safety standards. This designprevents entry into fan section without firstremoving the safety guard.

Double Wall Construction(Optional)See page 12 regarding this option.

Sealer Strip, which covers the standing seam andpulls the flanges together, is now shown.

GasketingCover panels are fastened to the unit framing overclosed-cell foam gasketing. RT doors are alsogasketed and when doors are closed against thedoor frame members, the double gasketing assuresa tight seal.

FRESH AIR

RETURN AIR

EXHAUST AIR

EXHAUST AIR ACCESS FILTERS COIL(S) SUPPLY BLOWER/DIFFUSER FINAL FILTERS

SUPPLY AIR

CONSTRUCTION

Versatility Thru Modular Design

Typical Clean Room Arrangement

Straight Through AirflowStatic pressure resistance is minimized by thestraight, low velocity air flow throughout the unit.

Modular DesignThe versatile modular design of Dunham-Bushindustrial quality roof mounted air handling unitsallow the specifying engineer to arrange sections tomeet most any design requirement.Draw thru – Blow Thru – Heating – Cooling –Dehumidification – Filtration – Make Up Air – HeatRecovery – Clean Rooms – Supply Fans for othersystems are just some of the applications that theRT unit is particularly suited to.

Walk-In AccessWide open space, and easy service access, isprovided. This reduces maintenance time which isso important on rooftop appliances. See page 12for details on the user-friendly access doors.

Modular SectionsØ 100% Outside AirØ 100% Return AirØ 0 to 100% EconomizerØ 0 to 30% EconomizerØ Economizer ExhaustØ Return Air FanØ Down Discharge PlenumØ Horizontal Discharge PlenumØ Down Discharge Supply FanØ Horizontal Discharge Supply FanØ Flat FilterØ Angle FilterØ Bag FilterØ Access Section

Ø Face & By-passØ Heating Coil SectionØ Standard Coil SectionØ Electric Coil With Remote Control PanelØ Electric Coil With Built-in Control PanelØ HorizontalThere are twenty-two (22) modular sections whichcan be selected and arranged to satisfy everyapplication requirement.

They are grouped into: a.) air enteringb.) middle andc.) air leaving sections.

All units are composed of one (1) air entering andone (1) air leaving section and as many middlesections as required (not to exceed a total length of470 inches, including air hood).

Air Entering SectionsThere are six (6) air entering sections: three (3)different economizer versions; all-outside airsection; and a return air fan section. All economizersections and the return air fan section are suppliedwith dampers to proportion the fresh and return airstreams.

100% Outside Air Section #1

Furnished with outside air opening, weather hood,moisture eliminator and low leak damper.

CONSTRUCTION

100% Return Air Section #2This plenum section is furnished with return airopening only. Available with optional flat filter rack.

100% & 30% Economizer Sections #3. #4Mixing dampers are selected to provide twoversions of economizer section; either 0-100%outside air or 0-30% outside air with full sized100% return air dampers for either version.Damper linkage and space for damper motors areinside unit cabinet. All controls are by others. lowleakage, aluminium airfoil dampers are standard.One access door is furnished and is located on thecoil connection side.

Economizer Exhaust Section #5

Furnished with return and outside air openings andproportioning dampers suitable for up to 100%CFM for either air stream, as well as gravity-typeexhaust dampers for relief of a maximum 80%CFM. Weather hood and moisture eliminator foroutside air inlet are standard. All controls are byothers.

Return Air Fan Section #6This section is furnished with the same features asthe economizer exhaust section with the addition ofa return air fan assembly. One access door isfurnished and is located on the drive side.

The return air fan is selected and operated toovercome the static resistance of the returnductwork. This permits the supply fan to operate ata lower static pressure, resulting in lower RPM anda lower sound level.

The return air fan is supplied with gravity exhaustdampers, as standard, providing an accurate andpositive means for exhausting stale building air.These fan sections are available with forward curve

and airfoil wheels. Refer to fan tables labeledSection 6 for fan performance.

Flat Filter RackTwo flat filter racks, for 2” and 4” filters, areavailable in several sections as a factory installedoption. This results in a more compact and costeffective total assembly by avoiding the use of aseparate flat filter section.Available in all sizes:

No. 2 100% Return Air SectionNo. 3 100% Economizer SectionNo. 4 30% Economizer Section

One access door is furnished and is located on thecoil connection side.

Middle SectionsThere are twelve (12) middle sections available.They include the filter sections, heating and coolingcoil section access section, face and bypasssection, a horizontal fan section and HEPA filters.

Filter SectionsHigh velocity air across filters caused by poor airdistribution must be avoided if good air filtration isto be obtained. Always separate a number 6return air fan from filter sections 11, 12 and 14Fwith at least one modular section. A number 13access section is normally used for thispurpose .

Flat Filter Section #10A flat filter section is available for either 2” or 4”filters. As an economical space saving option, a flatfilter rack can be installed in outside air sections 2,3 and 4 and in the face and bypass section 14. Onefilter door is furnished with flat filter sections and islocated on the coil connection side.

Angle Filter Section #11Designed for high volume CFM applications. Filtersare arranged in a “W” pattern to give the greatestsurface possible.

The increased filter area found in angle filtersections will extend the life of the filter and reduceairflow resistance. Sections are limited to 2” thickfilters. These sections have one full size accessdoor located on the coil connection side.

CONSTRUCTION

Bag Filter Section #12

The bag filter section when used alone will housebags up thru 20” deep. Add an access section or aface and bypass damper section (if applicable)immediately downstream for use with deeper bags.

Bag filters in efficiencies from 50% to 95% areavailable. Pleated 2” filters (35% efficient) areavailable for the pre-filter racks. Cartridge-typefilters, also in efficiencies from 50% to 95%, aredisposable rigid cell type with glass mediasupported by wire grids and fit into a metal holdingframe. Cartridge-type filters are recommended foruse with variable volume systems in whichchanging air volumes cause flexing and exertundue stress on conventional bags.

HEPA Filter Section #13HThe HEPA is a High Efficiency Particulate Air Filtersection. The HEPA filters are one of the mostefficient air filters commercially available. Theyhave a broad application in clean rooms and otherareas requiring the very highest levels ofcontamination control. The section #13H includessolid liners, a hinged access door, and has a filterholding frame that is front loading. This frameutilizes the unit pressure to seal the filter againstthe holding frame. For ease of filter removal, asection #13 (access section) is recommendedupstream of this section.

Access Section #13This section, a plenum with an access door, can beused to house many types of special apparatus aswell as to provide access in a critical location. See

page 34 for dimensional drawing of spaceavailable.

Face & Bypass Damper Section #14Available for use with “small” face area coils, (seePage 40 for size). The face and bypass dampersection is fabricated with balanced opposed bladedampers and space within the weather-tight cabinetfor field supplied linkage and damper motor.

This section can be furnished with a flat filter rackfor 2” or 4” filters.

Heating Coil Section #15Heating coil sections are suitable for all heating orsensible dry cooling applications requiring no drainpan and no more than a total of 11 ½” of coils andspacers. The RT 8 thru 33 heating coil sections are24” deep and the RT 39 and 48 are 48” deep.Access doors are furnished on the coil connectionend. A built-in pipe chase is standard.

Standard Coil Section #16

The 48” standard coil section is furnished with agalvanized drain pan, complete with drain line toexternal drain fitting, for all types of heating andcooling applications.

Also included is a built-in pipe chase and provisionsfor a total of 19 ½” of coils and spacers. Thecooling coil section for Sizes 8 thru 33 are 48” indepth, the size 39 and 48 are 96”.

Coil sections can be supplied with either left or righthand connections. One access door is furnishedand is located on downstream half of the section onSizes 12 thru 39. All access doors are on coilconnection side of unit.

CONSTRUCTION

Space Saving Coil Section 16MThe section 16M is a 24” long coil section. A fulldrain pan is provided. The pipe chase area forpiping penetration of the floor is omitted. Thissection is ideal when piping enters the unit abovethe roof.

Electric Heating Coil Sections #17, #18Designed for use with slide-in type electric heatsubassemblies, this coil section is available in twoversions. Section 17 is 24” deep made for electricheating utilizing a remote control panel. Section 18is 48”, deep for heaters with built-in control panels.All heater subassemblies and control panels areU.L. listed.

Electric Heating Coils InstalledSection #17

Horizontal Fan Section #19Fan section 19 is designed for blow-thru applicationwith dampers, coils or filters located down-stream.This section includes a diffuser which provides foruniform flow across the downstream components.This section is not an end section and either asection 7 or 8 must be furnished to complete theunit.

This fan section is available with either a forwardcurved or airfoil fan for low or medium pressureapplications. Optional inlet vanes are available foreither style fan.The fan and motor are built into a sub-assemblywhich is spring isolated from the unit frame. Thefan discharge is completely isolated from thedownstream components.A full size access door is furnished on the driveside.REFER TO FAN TABLES DESIGNATEDSECTION 19 FOR PERFORMANCE.

AIR LEAVING SECTIONS

There are four (4) air leaving end sections: twosupply air fans and two supply air plenums.

The two supply air fans provide either horizontaldischarge to the roof level (Section 20) or downdischarge thru the curb (Section 9).

The two supply air plenums for either horizontal ordown discharge are used to complete the RT unitwhen Section 19 the blow-thru supply fan (which isa middle section) is used.

Supply Air Fan Section #9Down DischargeThis supply air fan section for draw-thruapplications is designed for installations in whichthe supply air ductwork is to be routed down thruthe roof curb. This design results in minimum duct-work cost with minimum fan brake horsepower.This fan section is available with either a forwardcurved or airfoil fan for low or medium pressureapplications. Optional inlet vanes are available foreither style fan.The fan and motor are rebuilt into a sub-assemblywhich is spring isolated from the unit frame. Thefan discharge is completely isolated from theductwork attachment flange.A full size access door is furnished on the driveside.

Forward Curved Fans AirFoil Fans

CONSTRUCTION

Optional fan control packages are described onPage 11.

Supply Air Fan Section #20Horizontal DischargeThis supply air fan section for draw-thruapplications is designed for installations in whichthe supply air ductwork leaves the RT unit abovethe roof line. This configuration is typical of manyretrofit jobs, but also provides the flexibility oftenrequired on new construction.

Construction details fan options and optionalaccessories are the same as down discharge fanSection 9 described in detail on this page.This section is an end section and does not requireany additional sections downstream.

Options & AccessoriesVariable Air Volume UnitsVariable air volume on roof top air handlers isaccomplished by means of inlet guide vanes. AllRT units can be furnished with optional inlet vanes.Where both are offered on the same size unit, ananalysis of energy usage with each type of fan isrecommended.

Variable Inlet Vane Dampers

Variable inlet vanes operate freely with eithermanual or motorized drives. Friction-free bearings

assure smooth and vibrationless performance.

All fans are double inlet with inlet vanes furnishedon both venturies. Interconnecting linkage betweenboth sets of inlet vanes is provided. Damper motorsare not included.

Fan Control Panel

Basic Fan Control PanelThe Dunham-Bush RT air handler can be suppliedwith an optional fan control panel. The basic fancontrol panel, for units with supply fan only,includes a main fused disconnect, motor starter,main power terminals on-off switch, and powerwiring to the supply fan motor. The control panelaccess door interlocks with the disconnect handleto prevent accidental entry with power on. Thisaccess door interlocks with the disconnect handleto prevent accidental entry with power on. Thisaccess door is located on the drive side adjacent tothe fan section door. 115 volt control circuit poweris to be supplied by others.

Option 1Return Air Fan Control

The basic fan control panel can be supplied withthe additional controls required for units with returnair fans. This includes the return fan motor starter,and power wiring to the return fan motor. Unitinstallation is therefore simplified by single-pointpower connection serving both fan motors. Panellocation is same as described for single fan unit.

Option 2115 Volt Receptacle & Light Fixture Option

A 115 volt, 13 amp power receptacle plus a utilitylight are provided to facilitate servicing. These aremounted and wired in the fan section(s) if ordered;they are available only when the basic controlpackage is furnished. Power wiring is by othersunless the control circuit transformer is ordered.

Option 3115VOLT Control Power Transformer

An optional control power transformer is factorymounted and wired to eliminate the need for fieldwiring. The control transformer is sized accordinglyif the 115 volt receptacle and light option is alsofurnished.

CONSTRUCTION

Access DoorsFull height, access doors, with heavy duty latches,are available as an option, factory mounted in anylocation normally having a full height cover panel.

A heavy duty nylon hinge is provided. Door servicetie backs are optional.

All access doors are double gasketed, one layer ofgasket is applied to unit framing as with coverpanels, one layer is applied directly to the dooritself thus gasket meets gasket to form the seal.

Ø All Fan SectionsØ All Sections Having Filters (2 door – Bag Filter

Section)Ø All Coil SectionsØ All access SectionsØ #17 and #18 Electric Heat SectionØ All Sections Having Dampers (Except #5)

See page 6 for handle description.

Optional access doors are available on all sectionsexcept:

#1 Outside Air Section#8 Horizontal Discharge Section#5 Economizer Exhaust Section

Double Wall Construction

Available on doors and fixed panels. Insulation issandwiched between the inner and outer panelseliminating insulation erosion, facilitating cleaning,and assuring years of trouble-free operation.Double wall construction is a typical requirement inclean rooms.

Double Wall Construction is required on manyhospital and laboratory applications. Theseprojects often utilize 80-95% efficient bag/cartridgefilters in final “final filter” arrangements. The finalfilter section is the last component in the air handlerand all duct work downstream of these filters,generally requires solid liners over insulation. Infact, hospital insurance policies require thisconstruction for certain rooms. Therefore, the finalfilter section of the air handler must have solidliners which DB offers on these sections.

Double Wall Air Handlers provide heavier panelconstruction thanks to the structural advantagesof sandwiching sheet metal around insulation (asopposed to flat, single panels). This heavierconstruction, combined with the DB standardgasketing between adjoining panels and frames,forms a rigid, air tight cabinet.

Insulation is protected from damage andpermanently secured. Field installation of pipingand controls, or just regular maintenance, oftendamages insulation before the construction projectis completed. Eventual air handler re-insulationcosts are almost guaranteed within a few years ofoperation due to insulation damage which causessweating, energy loss and excessive fan noise.Double wall construction eliminates this problem.

Provide proper sound attenuation withperforated liners. The advantages of double wallconstruction are tremendous, however, solid linersprevent acoustical attenuation of fan noise. Solidsheet metal offers virtually no sound reduction. DBoptionally offers perforated liners in order to quietlyprovide the advantages of double wall construction.

Meet New Indoor Air Quality Standards

Exposed insulation presents a rough surface to theconditioned air which becomes a source of dirt andmicroorganism accumulation. Unfortunately, roughinsulation is virtually impossible to clean. If theinsulation coating is torn or damaged, thenfiberglass is exposed to the conditioned air causingmore air quality concerns. DB double wall airhandlers eliminate these air quality problems.

InsulationDunham-Bush RT units are insulated from the airentry end thru to the air leaving end as standard.

CONSTRUCTION

Insulation Available1”, 1 1/2# density semi-rigid aluminum foil facedfiberglass (standard). Optional include 1”, 3#density coated fiberglass. 5/8” rigid boardpolyurethane aluminum foil faced insulation. 2”, 11/2# density, semi-rigid, neoprene coatedfiberglass.

All insulations are fastened to panels with water-proof adhesive and mechanical fasteners.

Optional 2”, 1 1/2# insulation requires double wallconstruction.

Piping VestibulesTwo piping vestibules are available; a 24” versionfor the heating coil section and a 48” version for thestandard coil section.

To prevent shipping damage, the vestibule isshipped as a kit for field assembly. Since it ismounted in place of either one or two fixedpanels or access doors, the piping vestibuledoes not interrupt the straight line of either theair handler base rail or the roof curb.

Though intended primarily as a pipingvestibule, it may be mounted in any location inwhich fixed panel(s) or access door(s) arenormally located. It thus provides a watertighthousing for any field supplied appurtenance orapparatus which will not fit within the normal airhandler cabinet. Its actual location can bedetermined at the job site.

*Vestibules are not required on cooling only orheating only applications, unless steam heating. Allother applications require vestibule.

Coil SectionThe RT 39 & 48 units have been designed with thesame low silhouette as the RT33 thru the use ofstaggered coils as depicted above. Uniform airdistribution across the entire face of both coils ismade possible by generous spacing of the coils,which permits a mild transition separating the twoair streams.

All other unit sizes are designed as “single bank”with one pipe chase per coil section.

RT 39 & 48 (Staggered Coils)

Without Piping Vestibules

With Piping Vestibules

HEATING AND COOLING COILS

Water CoilsWater cooling and heating coils are furnished with5/8” O.D. (Type 5) copper tubes; aluminium oroptional cooper fins.

Available:Rows Cooling – 3, 4, 5, 6, 8, or 10Rows Heating – 1, 2, 3, or 4Fins Per Inch – 6, 8, 10, 12, or 14

A complete selection of coil circuiting is available tooptimize heat transfer coefficients without resortingto restrictive internal devices which increasepressure drop and restrict draining. All circuitingsare made without “trapped” circuits so that the coilis drainable.

Special consideration must be given to preventfreeze-up of water coils. It is recommended that anadequate glycol solution be used where coils areexposed to air temperatures below 32°F. Drainingof water coils and the “blow-out” with air pressure isan alternate to use of glycol solution.

All water coils are circuited and installed for counterflow operation. Coils are certified for 200 PSIGwater working pressure and 200°F temperature.

Steam CoilsSteam coils are furnished with 5/8” (Type 5)diameter copper tubes and aluminum fins. Optionalcopper fins are also available.

Type 5 – Rows – 1 or 2FPI – 8, 10, 12, 14

Available in non-freeze construction only, the NFStype coil features steam distribution tubesfabricated with directional kinetic orifices spaced soas to insure positive condensate removal and evensteam distribution over the entire coil face.

Refrigerant CoilsRefrigerant coils are furnished with or 5/8” O.D.(Type 5) copper tubes; aluminum or optionalcooper fins.

Evaporator CoilsAvailable:Rows Cooling – 3, 4, 5, 6, 8, or 10Fins Per Inch –6, 8, 10, 12 or 14

Direct expansion cooling coils are furnished withbrass, sweat-type distributors and suction headersof heavy wall seamless copper tube. Distributorleads are all of equal length to insure equalrefrigerant pressure drop through all circuits. Avariety of circuiting is offered to optimizeperformance and pressure drop. Coils can besupplied with multiple distributors for face or rowcontrol.

NOMINAL COIL CAPACITIES

Type 5 - Heating0° Entering Air Temperature

WATER HEATING COILS STEAM COILS

1 ROW 2 ROW 1 ROW 2 ROWUnitsize

CFMStd. Air Face Area

Sq. Ft. MBH GPM PD* MBH GPM PD*Face Area Sq.

Ft. MBH MBH

08 4400 8.8 249.4 25.7 8.9 437.3 45.0 3.8 8.3 208.4 369.2

12 5845 11.69 331.9 34.2 8.9 581.8 59.9 3.8 11.20 279.8 494.9

18 8960 17.92 517.1 53.2 13.7 906.2 93.3 5.9 17.33 431.4 762.3

26 12750 25.50 744.0 76.6 19.6 1,303.0 134.1 8.7 24.08 605.3 1071.8

33 16805 33.61 982.8 101.2 21.0 1,720.3 177.1 9.5 32.14 803.7 1421.7

39 19725 39.45 1153.6 118.7 21.0 2,019.3 207.8 9.5 37.99 947.0 1674.5

48 24110 48.22 1410.0 145.1 21.0 2,468.1 254.0 9.5 46.76 1162.2 2053.9

60° Entering Air TemperatureWATER HEATING COILS STEAM COILS

1 ROW 2 ROW 1 ROW 2 ROWUnitsize

CFMStd. Air Face Area

Sq. Ft. MBH GPM PD* MBH GPM PD*Face Area

Sq. Ft. MBH MBH

08 4400 8.8 154.6 15.9 3.8 285.9 29.4 11.8 8.3 145.6 255.5

12 5845 11.69 205.7 21.2 3.8 380.3 39.1 11.8 11.20 195.6 342.5

18 8960 17.92 322.3 33.2 5.9 589.9 60.7 19.0 17.33 301.4 527.6

26 12750 25.50 465.6 47.9 8.6 811.0 83.5 3.8 24.08 423.0 741.9

33 16805 33.61 615.2 63.3 9.1 1072.0 110.3 4.1 32.14 561.6 983.9

39 19725 39.45 722.1 74.3 9.1 1258.4 129.5 4.1 37.99 661.8 1158.8

48 24110 48.22 882.6 90.8 9.1 1538.1 158.3 4.1 46.76 812.1 1421.2

Notes :1.) Coils Rated at 200°F. Entering Water Temperature 180°F Leaving

Water Temperature & 5 PSIG Steam2.) All Coils are 8 Fins per Inch

3.) *Water Pressure Drop -- Ft. of Water4.) MBH -- BTU/HR Capacity in thousands

Type 5 - Water Cooling4 Row

42° Entering Water Temp. 44° Entering Water Temp. 45° Entering Water Temp.

MBH MBH MBHUnitSize

CFM Std.Air

Coil FaceArea

Sq. Ft.Total Sens.

GPM PD*Total Sens.

GPM PD*Total Sens.

GPM PD*

08 4400 8.8 147.5 103.8 29.5 12.7 132.1 97.8 26.4 10.5 124.4 95.4 24.9 9.3

12 5845 11.69 196.2 137.9 39.3 12.7 175.7 129.9 35.2 10.5 165.6 126.7 33.1 9.3

18 8900 17.92 263.0 196.7 52.7 2.5 234.1 184.5 46.9 2.1 220.1 179.6 44.1 1.9

26 12750 25.50 394.6 286.9 79.0 4.2 352.4 269.5 70.5 3.4 331.7 262.5 66.4 3.0

33 16805 33.61 525.0 382.8 105.1 4.6 468.5 359.8 93.8 3.8 441.2 346.0 88.3 3.4

39 19725 39.45 616.2 449.3 123.4 4.6 550.0 422.3 110.1 3.8 517.9 406.1 103.7 3.4

48 24110 48.22 753.2 549.1 150.8 4.6 672.2 516.2 134.6 3.8 633.0 496.4 126.7 3.4

6 Row42° Entering Water Temp. 44° Entering Water Temp. 45° Entering Water Temp. 46° Entering Water Temp. 48° Entering Water Temp.

MBH MBH MBH MBH MBHUnit SizeCFM Std.

Air

Coil FaceArea

Sq. Ft.Total Sens.

GPM PD*

Total Sens.

GPM PD*

Total Sens.

GPM PD*

Total Sens.

GPM PD*

Total Sens.

GPM PD*

08 4400 8.8 173.5 119.2 34.8 3.8 155.5 111.2 31.1 3.1 146.9 108.5 29.4 2.8 138.2 105.8 27.7 2.5 121.5 99.1 24.3 2.0

12 5845 11.69 230.8 158.4 46.2 3.8 206.9 147.7 41.4 3.1 195.3 144.2 39.1 2.8 183.8 140.6 36.8 2.5 161.7 131.7 32.4 2.0

18 8900 17.92 371.2 248.2 74.3 6.8 333.9 234.6 66.9 5.5 315.5 226.4 63.2 4.9 297.2 221.0 59.5 4.6 261.7 204.7 52.4 3.6

26 12750 25.50 546.0 360.9 109.3 10.8 492.3 337.3 98.6 8.9 465.5 329.9 93.2 8.2 438.9 322.2 87.9 7.2 387.0 299.0 77.5 5.7

33 16805 33.61 723.5 475.7 144.9 11.8 652.6 450.2 130.7 9.7 617.2 434.9 123.6 8.7 582.1 424.7 116.5 8.0 113.4 394.0 102.8 6.3

39 19725 39.45 849.3 558.4 170.1 11.8 766.0 528.4 153.4 9.7 724.5 510.4 145.0 8.7 683.2 498.5 136.8 8.0 602.6 462.5 120.6 6.3

48 24110 48.22 1038.0 682.5 207.9 11.8 936.3 645.9 187.5 9.7 885.5 623.9 177.3 8.7 835.1 609.3 167.2 8.0 736.6 565.3 147.4 6.3

Notes:1.) MBH – BTU/HR Capacity in thousands2.) Sens. – Sensible Capacity3.) Chilled Water Temperature Rise 10°F

4.) All Coils are 8 Fins per InchEntering Air Temperature – 80°F DB/67°F. WB

5.) *Water Pressure Drop – Ft of Water

AIR PRESSURE DROP

Type 5 - Heating CoilsTABLE NO. 1 Inches of Water

AIR VELOCITY – FT., MIN.Row & Fin

Series350 400 450 500 550 600 700 800 900 1000 1100 1200

1A 0.044 0.060 0.076 0.092 0.110 0.130 0.165 0.220 0.272 0.315 0.400 0.480

1B 0.060 0.075 0.092 0.110 0.130 0.150 0.200 0.250 0.300 0.367 0.430 0.510

1C 0.065 0.088 0.110 0.130 0.150 0.170 0.220 0.280 0.315 0.400 0.470 0.540

1D 0.082 0.101 0.130 0.150 0.170 0.195 0.250 0.300 0.357 0.415 0.500 0.580

2A 0.088 0.120 0.152 0.184 0.220 0.260 0.330 0.440 0.544 0.630 0.800 0.960

2B 0.120 0.150 0.184 0.220 0.260 0.300 0.400 0.500 0.600 0.734 0.860 1.020

2C 0.130 0.176 0.220 0.270 0.300 0.340 0.440 0.560 0.630 0.800 0.940 1.080

2D 0.164 0.202 0.270 0.300 0.340 0.390 0.500 0.600 0.714 0.830 1.000 1.160

3A 0.145 0.170 0.210 0.250 0.285 0.320 0.435 0.505 0.650 0.750 -- --

3B 0.170 0.205 0.250 0.300 0.350 0.400 0.500 0.620 0.760 0.900 -- --

3C 0.200 0.245 0.298 0.350 0.405 0.460 0.600 0.720 0.880 1.000 -- --

3D 0.230 0.280 0.340 0.400 0.460 0.520 0.650 0.825 1.010 1.150 -- --

Type 5 - Cooling CoilsTABLE NO. 2 Inches of Water

WET SURFACE DRY SURFACE

AIR VELOCITY-FT./MIN. AIR VELOCITY-FT./MIN.Row

&Fin Series

350 400 450 500 550 600 350 400 450 500 550 600

4Y 0.210 0.256 0.305 0.358 0.413 0.470 0.157 0.195 0.236 0.279 0.326 0.375

4A 0.248 0.302 0.360 0.422 0.488 0.550 0.194 0.240 0.290 0.342 0.398 0.456

4B 0.285 0.348 0.415 0.487 0.562 0.640 0.231 0.285 0.343 0.404 0.469 0.538

4C 0.322 0.394 0.470 0.552 0.637 0.725 0.268 0.330 0.396 0.466 0.540 0.619

4D 0.360 0.440 0.525 0.616 0.711 0.810 0.305 0.375 0.450 0.529 0.612 0.700

5Y 0.273 0.332 0.394 0.460 0.528 0.600 0.195 0.242 0.293 0.347 0.404 0.465

5A 0.322 0.392 0.466 0.545 0.626 0.712 0.241 0.298 0.359 0.423 0.492 0.564

5B 0.370 0.452 0.538 0.630 0.725 0.825 0.288 0.354 0.424 0.500 0.579 0.663

5C 0.419 0.512 0.610 0.714 0.824 0.938 0.334 0.409 0.490 0.576 0.666 0.761

5D 0.468 0.572 0.682 0.799 0.922 1.050 0.389 0.465 0.556 0.652 0.754 0.860

6Y 0.323 0.395 0.471 0.552 0.636 0.725 0.231 0.285 0.343 0.405 0.471 0.540

6A 0.383 0.469 .0560 0.656 0.757 0.864 0.286 0.351 0.420 0.494 0.572 0.652

6B 0.443 0.542 0.684 0.760 0.879 1.002 0.342 0.418 0.498 0.582 0.672 0.765

6C 0.503 0.616 0.737 0.865 1.000 1.141 0.398 0.484 0.575 0.671 0.772 0.878

6D 0.563 0.690 0.826 0.969 1.121 1.280 0.453 0.550 0.652 0.760 0.873 0.990

8Y 0.428 0.525 0.628 0.738 0.854 0.975 0.328 0.400 0.476 0.557 0.642 0.730

8A 0.506 0.621 0.744 0.874 1.012 1.156 0.398 0.485 0.576 0.673 0.775 0.880

8B 0.584 0.718 0.860 1.011 1.170 1.338 0.469 0.570 0.676 0.790 0.908 1.030

8C 0.663 0.814 0.975 1.148 1.329 1.519 0.540 0.655 0.777 0.906 1.040 1.180

8D 0.741 0.910 1.091 1.284 1.487 1.700 0.610 0.740 0.877 1.022 1.173 1.330

10Y 0.526 0.640 0.761 0.889 1.021 1.160 0.408 0.500 0.598 0.701 0.810 0.925

10A 0.625 0.762 0.909 1.064 1.225 1.395 0.496 0.605 0.721 0.843 0.972 1.160

10B 0.724 0.885 1.057 1.239 1.430 1.630 0.584 0.710 0.844 0.985 01.133 1.288

10C 0.822 1.008 1.205 1.414 1.634 1.865 0.671 0.815 0.967 1.127 1.294 1.469

10D 0.921 1.130 1.353 1.589 1.838 2.100 0.759 0.920 1.090 1.269 1.456 1.650

AIR PRESSURE DROP

Cooling Coils Large Face Area - Square FeetUNIT SIZE

Size8 12 18 26 33 39 48

F.A. 8.80 11.69 17.92 25.5 33.61 39.45 48.22

Air Pressure DropTABLE NO. 3 Inches of Water

Air Velocity Ft./Min.Description

200 250 300 350 400 450 500 550 600

Entering Air Sections*

Econ. Sec. 5 & 6 -- -- 0.064 0.085 0.109 0.138 0.165 0.202 0.237

Sec. 3 & 4 -- -- 0.043 0.057 0.073 0.092 0.110 0.135 0.158

Fresh Air HoodSec. 1 through 6

0.011 0.017 0.024 0.032 0.041 0.052 0.062 0.078 0.092

Filters**

2” Pleated 35% Eff. 0.135 0.173 0.210 0.250 0.285 0.322 0.360 0.450 0.544

2” Perm. High Vel. 0.030 0.044 0.060 0.081 0.130 0.126 0.152 0.180 0.212

4” Pleated 35% Eff. 0.102 0.145 0.18 0.217 0.255 0.292 0.33 0.390 0.45

Filters – Bag 60% - 65% Efficient

22” 0.17 0.19 0.22 0.25 0.27 0.32 0.35 0.39 0.45

Bag Depth 29” 0.12 0.14 0.17 0.20 0.22 0.27 0.30 0.34 0.40

36” 0.11 0.13 0.16 0.19 0.21 0.26 0.29 0.35 0.39

Filters – Bag 80% - 85% Efficient

22” 0.28 0.29 0.31 0.33 0.36 0.39 0.44 0.48 0.55

Bag Depth 29” 0.20 0.21 0.23 0.25 0.28 0.31 0.36 0.40 0.47

36” 0.19 0.20 0.22 0.24 0.27 0.30 0.35 0.39 0.46

Filters Bag 90% - 95% Efficient

22” 0.26 0.27 0.32 0.35 0.38 0.44 0.50 0.55 0.64

Bag Depth 29” 0.21 0.22 0.27 0.30 0.33 0.39 0.45 0.50 0.59

36” 0.20 0.21 0.26 0.29 0.32 0.38 0.44 0.49 0.58

Cartridge Type 12” Deep

55% - 65% Eff. 0.13 0.17 0.21 0.24 0.28 0.31 0.35 0.42 0.49

80% - 85% Eff. 0.19 0.24 0.29 0.34 0.38 0.43 0.48 0.54 0.57

90% - 95% Eff. 0.31 0.36 0.41 0.46 0.50 0.55 0.60 0.66 0.74

HEPA 0.51 0.60 0.79 0.93 1.07 1.21 1.35 -- --

Face & Bypass Dampers

Face Dampers 0.01 0.02 0.02 0.03 0.04 0.05 0.06 0.08 0.10

*The pressure drop thru the air entering sections is based on the air velocity thru the large cooling coil**Filter pressure drop is based in the air velocity thru clean filters. Filter velocity = CFM ÷ filter face area from Table No. 4

TABLE NO. 4 Filters - Face Area Square FeetUnit Size

Type8 12 18 26 33 39 48

Flat 10.00 17.00 22.67 30.00 40.00 44.40 N/A

Angle 16.67 20 34 53.3 66.67 66.67 80

Bag & Cartridge 10 17.00 22.67 30 40 44.4 53.3

Pre-Filter 10 17 22.67 30 40 44.4 53.3

HEPA 8 12 20 30 36 42 48

TABLE NO. 5 Diffuser Plate Pressure Drop for Blow Thru Application (Section 19)& Cabinet Loss

Unit SizeDescription

200 250 300 350 400 450 500 550 600

Diffuser 0.010 0.040 0.077 0.119 0.161 0.203 0.251 0.303 0.361

Cabinet Loss 0.2”

SELECTION PROCEDURE

EXAMPLE

Given:Air Volume Required (Std. Air).......... 16,000 CFMExternal Static Pressure...................... 1.60 Inches

Design Conditions – CoolingCoil Entering Air Temperature DB/WB.... 80°F/67°FCoil Leaving Air Temperature DB/WB.. 55°F/54.5°FChilled Water Temperature..........................45°FWater Temperature Rise.............................10°F

Design Conditions – Heating

Coil Entering Air Temperature DB................60°FCoil Leaving Air Temperature DB............... 100°F

Steam Pressure (Saturated) ...................... 5 PSIG

UNIT COMPONENTS#3 Economizer Section: #12 Bag Filter Section (60-65% Filters, 29” Deep Bags, 2” pleated 35% Eff.Throwaway Pre-Filters); #16 Coil Section withHeating and Cooling Coils, #9 Down Discharge FanSection with Airfoil Wheels.

NOTE: An access section is required immediatelydownstream from the bag filter section toaccommodate the 29” deep bags.

UNIT SELECTIONSTEP ISelect unit size based on 500 FPM maximum coilface velocity.

CFM @ STD. AIR

SIZE 12 18 26 33 39

F.A. Lrg. Coil 11.69 17.92 25.50 33.61 39.45

CFM @ 400 FPM 4676 7168 10200 13444 15780

CFM @ 500 FPM 5845 8960 12750 16805 19725

CFM @ 600 FPM 7014 10752 15300 20166 23670

STEP II

COOLING COIL

Referring to a saturated wet bulb enthalpy table tofind ∆ H, calculate total cooling required.

Total Cooling = 4.5 x CFM x ∆ H= 4.5 x 16, 000 x (31.62 – 22.92)= 626, 400 BTUH

BTUH 626,400GPM =500 x ∆Tw

=500 x 10

= 125.3 GPM

Referring to Page 52 for RT 33, a large water coilhas 46 tubes in face, 66” finned length and 33.61sq. Ft. face area. BTU/Sq. Ft. required= 626,400 .33.61 = 18,637 BTU.

Cooling coil rows, fins and circulating can beselected by computer.

HEATING COILSTEP IIIFrom the physical data on page 40, a Type 5Steam Coil, large size, has 46 tubes in face, 66”finned length and 33.61 Sq. Ft. face area for anRT 33.

Heating coil rows, fins and circuiting can beselected by computer.

STATIC LOSSESSTEP IVCalculate air velocities and determine air pressuredrop for all components.Air Velocities From:

Coils = CFM Coil F.A.Filters = CFM Filter F.A.Economizer Sec. = CFM Large Coil F.A.Fresh Air Hood = CFM Large Coil F.A.

Refer to filter face areas on Page 17 to calculatefilter velocities. Pre-filter is same as bag filtersection face area. Assuming a 4 row, D fin seriescooling coil and a 1 row, A fin series steam heatingcoil selected.

Cooling Coil (476 FPM) ......................... 0.570”Heating Coil (497 FPM) ......................... 0.090”

Pre-Filter (400 FPM) ............................. 0.285”Bag Filter (400 FPM) ............................ 0.200”

Economizer Section* ............................ 0.150”

Casing loss........................................... 0.200”Total Internal Static .............................. 1.495”

External Static ...................................... 1.600”

Total Static Pressure ............................ 3.095”

*Assumed no fresh air through outdoor hood. Referto Table No. 3 for losses through hood, moistureeliminator and filters.

SELECTION PROCEDURE

MOTOR H.P. & FAN RPMFAN RATING TABLESupply fans : Sections 9,19 and 20 ........20 thru 26Return Fans : Section 6 ........................27 thru 30NOTE: Section 19 requires pressure drop from

table 5 page 17

FAN RPM & BHP – CORRECTEDFOR AIR DENSITYAll of the fan tables are based on standard airhaving a density of .075 lbs. Per cubic foot.

Since fans are constant volume devices,corrections to RPM and BHP must be made whenthe unit is to deliver other than standard air.

The correction factor is the ratio of the density of airat operating conditions to the density of standardair.

STEPSTo determine Fan RPM and BHP:

1. Determine correction factor at operatingconditions.

2. Unit static pressure is determined by using CFMat operating conditions to calculate airvelocities.

3. External S.P. of standard air at operating CFMequals Ext. S.P. correction factor .

4. Corrected total static pressure = Lines 2 + 3.

5. Enter the proper fan table and determine the fanRPM and BHP at operating CFM and correctedtotal static pressure.

6. Corrected BHP = (BHP from line 5) x correctionfactor.

7. Total S.P. at operating conditions equals:

Corrected TSP (from line 4) x correction factor.Example: RT 33 MA 16,000 CFM at 5000 ft.

elevation. 5WP4D cooling coil (large);55°F leaving air temperature; heatingcoil 5NFS1A (large); filters 55% efficientbags 26” deep and with 2” throwawaypre-filters. Unit is down dischargesection 9. Economizer section 3 isfurnished. External static pressure is1.6” W.G.

1. Altitude/Temp. Correction Factor = 0.856

2. Refer to filter face areas on page 21 tocalculate filter velocities.

Cooling Coil (476 FPM) 0.570”

Heating Coil (497 FPM) 0.090”

Pre-Filter (400 FPM) 0.285”

Bag Filter (400 FPM) 0.200”

Economizer Section* 0.150”

Casing Loss 0.200”

Total Internal Static 1.495”

*Assumed no fresh air through outdoor hood. Referto Table No. 3 for losses through hood, moistureeliminator and filters.

3. External static pressure corrected to std. air.

1.60” ESP 0.856 = 1.870”4. Total static pressure = 3.365”5. From Pages 24, RPM = 1301; BHP = 11.910”6. 11.91 BHP x 0.856 = 10.19 BHP7. 3.365 TSP x 0.856 = 2.88”TSP

ALTITUDE/ TEMPERATURE CORRECTION FACTORS

Altitude (Feet)Air Temp.°F

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

0 1.15 1.10 1.08 1.02 0.99 0.95 0.92 0.88 0.85 0.82 0.79

20 1.11 1.06 1.02 0.98 0.95 0.92 0.88 0.85 0.82 0.79 0.76

40 1.06 1.02 0.98 0.94 0.91 0.88 0.84 0.81 0.78 0.76 0.74

60 1.02 0.98 0.94 0.91 0.88 0.85 0.81 0.79 0.76 0.73 0.71

70 1.00 0.96 0.93 0.89 0.86 0.83 0.80 0.77 0.74 0.71 0.69

80 0.98 0.94 0.91 0.88 0.84 0.81 0.78 0.75 0.72 0.70 0.67

100 0.94 0.91 0.88 0.84 0.81 0.78 0.75 0.72 0.70 0.68 0.65

120 0.92 0.88 0.85 0.81 0.78 0.76 0.72 0.70 0.67 0.65 0.63

140 0.89 0.85 0.82 0.79 0.76 0.73 0.70 0.68 0.65 0.63 0.61

160 0.85 0.82 0.79 0.76 0.74 0.70 0.68 0.65 0.63 0.61 0.59

FAN PERFORMANCE TABLE: SUPPLY AIR FANS

SECTION 9, 19 & 20SIZE 8 SIZE 315 Forward Curved Fan

Total Static Pressure - Inches of Water0.50 1.00 1.25 1.50 1.75

CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

3300 634 0.84 835 1.28 - - - - - -

3600 656 1.02 844 1.46 931 1.72 - - - -

3900 679 1.22 863 1.69 939 1.95 1020 2.22 1099 2.51

4200 702 1.43 868 1.93 949 2.20 1027 2.41 1101 2.78

4500 730 1.69 887 2.22 962 2.50 1036 2.80 1108 3.08

4800 758 1.97 906 2.53 976 2.83 1048 3.14 1118 3.45

5100 788 2.30 928 2.88 996 3.18 1061 3.49 1128 3.82

5400 818 2.67 951 3.27 1017 3.58 1079 3.92 1141 4.26

5700 848 3.05 974 3.69 1038 4.03 1098 4.35 1157 4.72

6000 879 3.48 999 4.16 1060 4.50 1120 4.86 1176 5.21

6300 912 3.98 1027 4.67 1084 5.04 1141 5.40 1196 5.74

SIZE 8 SIZE 315 Forward Curved FanTotal Static Pressure - Inches of Water

2.00 2.25 2.50 3.00 3.50CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

3300 - - - - - - - - - -

3600 - - - - - - - - - -

3900 - - - - - - - - - -

4200 1174 3.11 - - - - - - - -

4500 1177 3.42 1245 3.75 - - - - - -

4800 1185 3.76 1249 4.12 1312 4.46 - - - -

5100 1194 4.18 1257 4.50 1317 4.87 - - - -

5400 1203 4.59 1266 4.96 1326 5.30 1439 6.08 - -

5700 1216 5.09 1275 5.43 1335 5.82 1446 6.60 - -

6000 1231 5.58 1289 5.98 1344 6.33 1454 7.12 - -

6300 1250 6.15 1302 6.52 1358 6.96 1464 7.77 1566 8.61

SIZE 8 SIZE 400 Airfoil FanTotal Static Pressure - Inches of Water

0.50 1.00 1.50 1.75 2.00 2.25 2.50CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

2700 882 0.34 1083 0.61 1258 0.89 1337 1.04 1414 1.19 1487 1.35 1558 1.52

3000 932 0.41 1122 0.70 1290 0.99 1366 1.15 1440 1.32 1511 1.49 1580 1.66

3300 986 0.48 1165 0.78 1325 1.11 1400 1.28 1470 1.45 1539 1.63 1605 1.82

3600 1040 0.58 1211 0.89 1364 1.24 1436 1.42 1504 1.59 1571 1.79 1635 1.97

3900 1098 0.68 1260 1.02 1406 1.38 1475 1.56 1542 1.76 1605 1.95 1668 2.16

4200 1157 0.78 1310 1.15 1451 1.53 1517 1.73 1581 1.93 1643 2.13 1703 2.34

4500 1216 0.91 1364 1.29 1498 1.70 1561 1.90 1623 2.12 1683 2.33 1742 2.56

4800 1277 1.05 1417 1.46 1547 1.87 1608 2.10 1668 2.32 1725 2.54 1782 2.77

5100 1339 1.21 1473 1.63 1598 2.07 1656 2.30 1715 2.54 1771 2.77 1825 3.01

5400 1402 1.38 1531 1.83 1650 2.30 1707 2.53 1762 2.77 1817 3.03 1869 3.27

5700 1466 1.58 1588 2.05 1704 2.53 1758 2.78 1813 3.04 1864 3.30 1917 3.55

6000 1530 1.79 1647 2.27 1758 2.78 1812 3.04 1863 3.31 1915 3.58 1964 3.84

6300 1594 2.02 1708 2.53 1814 3.05 1866 3.32 1917 3.61 1966 3.88 2015 4.16



2700 1691 1.86 1817 2.23 1935 2.60 2049 3.00 2157 3.41 2259 3.81 2359 4.25

3000 1710 2.02 1831 2.40 1948 2.80 2058 3.21 2163 3.61 2265 4.06 2363 4.52

3300 1731 2.19 1850 2.59 1964 3.00 2070 3.41 2175 3.86 2274 4.32 2370 4.76

3600 1757 2.37 1874 2.78 1983 3.21 2089 3.66 2190 4.12 2288 4.57 2382 5.07

3900 1786 2.57 1899 3.00 2006 3.45 2109 3.91 2208 4.37 2304 4.87 2397 5.35

4200 1819 2.78 1928 3.22 2033 3.69 2133 4.16 2231 4.66 2324 5.16 2414 5.68

4500 1853 3.00 1960 3.48 2062 3.95 2161 4.45 2255 4.94 2347 5.48 2436 6.01

4800 1891 3.25 1994 3.74 2094 4.23 2190 4.74 2282 5.27 2372 5.80 2460 6.36



Total Static Pressure - Inches of Water

0.50 1.00 1.25 1.50 1.75 2.00CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

4000 541 0.87 711 1.32 792 1.58 - - - - - -

4400 559 1.07 720 1.53 793 1.79 868 2.07 - - - -4800 582 1.29 731 1.79 802 2.06 868 2.33 937 2.66 - -5200 613 1.58 747 2.09 813 2.37 878 2.66 938 2.95 1002 3.305600 644 1.90 762 2.41 826 2.73 888 3.04 947 3.34 1003 3.656000 677 2.29 780 2.77 842 3.10 900 3.42 958 3.76 1012 4.096400 711 2.73 801 3.20 858 3.52 916 3.86 969 4.20 1024 4.596800 745 3.21 824 3.66 877 3.99 931 4.36 985 4.73 1035 5.097200 779 3.75 855 4.23 898 4.53 949 4.89 1000 5.27 1050 5.687600 814 4.35 886 4.86 922 5.11 968 5.50 1017 5.89 1065 6.28

8000 849 5.01 917 5.53 952 5.84 990 6.14 1035 6.53 1082 6.978400 884 5.74 950 6.29 983 6.59 1015 6.89 1056 7.29 1098 7.67



4000 - - - - - - - - - - - -

4400 - - - - - - - - - - - -4800 - - - - - - - - - - - -5200 - - - - - - - - - - - -5600 1062 3.76 - - - - - - - - - -6000 1066 4.43 1120 4.80 - - - - - - - -6400 1075 4.93 1125 5.31 1227 6.11 - - - - - -6800 1086 5.48 1134 5.84 1228 6.60 - - - - - -7200 1097 6.04 1145 6.48 1237 7.29 1326 8.08 - - - -7600 1112 6.72 1157 7.09 1247 7.97 1332 8.83 1417 9.73 - -8000 1127 7.37 1172 7.84 1259 8.72 1341 9.59 1421 10.53 - -8400 1143 8.15 1187 8.57 1270 9.49 1352 10.47 1431 11.41 1505 12.33


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

4000 861 0.58 1025 0.94 1099 1.14 1169 1.34 1237 1.55 1301 1.76 1364 1.97 1422 2.20

4400 913 0.68 1067 1.08 1138 1.29 1205 1.51 1270 1.72 1333 1.95 1392 2.17 1450 2.414800 966 0.81 1112 1.24 1180 1.45 1245 1.68 1306 1.92 1367 2.16 1423 2.40 1480 2.645200 1022 0.97 1161 1.41 1225 1.65 1286 1.87 1346 2.13 1403 2.37 1460 2.64 1513 2.905600 1078 1.12 1210 1.61 1272 1.85 1331 2.10 1387 2.36 1443 2.63 1497 2.90 1549 3.176000 1136 1.31 1262 1.82 1319 2.07 1377 2.34 1432 2.61 1485 2.90 1537 3.18 1587 3.476400 1195 1.52 1313 2.05 1371 2.33 1424 2.61 1478 2.90 1530 3.18 1579 3.48 1627 3.786800 1254 1.75 1368 2.32 1422 2.60 1474 2.90 1525 3.20 1575 3.51 1623 3.81 1671 4.127200 1313 2.00 1423 2.60 1475 2.90 1525 3.21 1574 3.52 1622 3.85 1669 4.16 1715 4.507600 1375 2.29 1479 2.91 1530 3.22 1578 3.55 1625 3.88 1671 4.22 1716 4.55 1760 4.89

8000 1436 2.60 1536 3.25 1584 3.58 1630 3.92 1677 4.26 1721 4.62 1764 4.96 1808 5.318400 1498 2.94 1593 3.62 1640 3.98 1685 4.32 1729 4.67 1773 5.04 1815 5.41 1856 5.788800 1559 3.31 1652 4.02 1696 4.39 1741 4.76 1783 5.13 1825 5.50 1866 5.88 1907 6.269200 1622 3.71 1711 4.46 1754 4.83 1796 5.21 1838 5.60 1878 5.99 1918 6.39 1957 6.799600 1684 4.15 1771 4.93 1813 5.31 1853 5.71 1893 6.12 1932 6.52 1970 6.93 2009 7.34



4000 1537 2.67 1645 3.15 1746 3.66 1844 4.19 1936 4.74 2025 5.28 2112 5.87

4400 1559 2.90 1664 3.42 1763 3.95 1859 4.50 1949 5.06 2037 5.64 2122 6.254800 1587 3.17 1688 3.69 1785 4.25 1877 4.82 1966 5.41 2052 6.02 2134 6.625200 1617 3.44 1715 3.99 1809 4.57 1899 5.17 1986 5.78 2069 6.39 2152 7.065600 1649 3.74 1745 4.32 1836 4.91 1924 5.54 2009 6.16 2092 6.83 2170 7.496000 1685 4.06 1777 4.66 1866 5.28 1952 5.92 2035 6.59 2115 7.26 2193 7.956400 1722 4.39 1813 5.03 1898 5.68 1983 6.35 2063 7.02 2141 7.73 2218 8.446800 1761 4.77 1849 5.43 1933 6.11 2015 6.79 2094 7.50 2170 8.21 2245 8.967200 1803 5.16 1888 5.85 1970 6.55 2050 7.27 2126 8.00 2202 8.75 2274 9.50



Total Static Pressure - Inches of Water0.50 1.00 1.25 1.50 1.75 2.00

CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

7000 400 1.34 536 2.16 595 2.61 - - - - - -7500 408 1.52 540 2.37 597 2.84 652 3.35 - - - -8000 416 1.73 544 2.63 600 3.11 653 3.61 705 4.15 - -8500 425 1.96 548 2.87 604 3.38 656 3.92 706 4.46 743 5.039000 435 2.22 553 3.18 608 3.71 659 4.23 708 4.80 754 5.409500 446 2.50 559 3.48 613 4.01 663 4.59 711 5.18 756 5.75

10000 456 2.80 567 3.84 618 4.40 667 4.97 714 5.54 759 6.1910500 469 3.15 575 4.22 624 4.77 672 5.35 718 6.01 762 6.6011000 480 3.51 583 4.62 630 5.20 678 5.82 722 6.43 766 7.1011500 492 3.89 592 5.06 639 5.67 684 6.26 727 6.92 770 7.6112000 506 4.35 600 5.51 647 6.12 690 6.78 733 7.46 775 8.1012500 519 4.82 611 6.01 655 6.68 698 7.34 740 7.98 780 8.7113000 533 5.31 621 6.56 664 7.23 706 7.90 746 8.59 786 9.3213500 546 5.82 631 7.13 674 7.80 715 8.51 754 9.25 792 9.91


2.25 2.50 3.00 3.50 4.00CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

7000 - - - - - - - - - -7500 - - - - - - - - - -8000 - - - - - - - - - -8500 - - - - - - - - - -9000 798 5.99 - - - - - - - -9500 799 6.41 842 7.03 - - - - - -

10000 801 6.78 843 7.49 921 8.76 - - - -10500 804 7.30 845 7.88 922 9.35 - - - -11000 808 7.77 848 8.47 923 9.89 - - - -11500 811 8.27 851 8.99 925 10.37 996 11.99 - -12000 815 8.86 854 9.52 928 10.94 998 12.60 - -12500 820 9.42 858 10.18 931 11.70 999 13.20 - -13000 824 10.03 862 10.82 934 12.30 1002 14.01 - -13500 830 10.74 866 11.42 938 13.08 1005 14.74 1069 16.39



7000 714 1.08 834 1.68 891 1.99 945 2.33 996 2.66 1045 3.01 1093 3.35 1140 3.747500 747 1.24 862 1.86 916 2.20 967 2.54 1018 2.90 1065 3.25 1111 3.64 1157 4.018000 781 1.41 891 2.07 942 2.41 992 2.78 1040 3.15 1087 3.52 1131 3.91 1175 4.328500 816 1.59 921 2.30 970 2.66 1018 3.04 1065 3.42 1109 3.81 1154 4.22 1196 4.639000 851 1.80 952 2.54 999 2.93 1045 3.31 1090 3.72 1134 4.13 1176 4.55 1217 4.979500 887 2.05 983 2.81 1029 3.21 1073 3.61 1118 4.03 1159 4.46 1200 4.89 1240 5.33

10000 923 2.30 1016 3.10 1060 3.51 1103 3.93 1145 4.37 1186 4.82 1226 5.26 1265 5.7210500 960 2.57 1049 3.41 1091 3.84 1133 4.28 1173 4.73 1213 5.18 1251 5.65 1290 6.1211000 997 2.87 1083 3.75 1124 4.19 1164 4.64 1203 5.11 1241 5.60 1279 6.08 1315 6.5611500 1034 3.20 1117 4.10 1157 4.57 1195 5.04 1234 5.53 1271 6.02 1307 6.52 1343 7.0212000 1072 3.55 1152 4.49 1191 4.99 1228 5.47 1265 5.97 1301 6.48 1336 6.99 1371 7.5112500 1110 3.93 1188 4.91 1224 5.41 1261 5.92 1296 6.43 1332 6.96 1366 7.49 1400 8.0313000 1148 4.35 1223 5.35 1259 5.88 1294 6.41 1329 6.93 1363 7.47 1397 8.03 1430 8.5713500 1188 4.79 1259 5.84 1294 6.36 1328 6.90 1362 7.46 1395 8.01 1428 8.58 1460 9.1514000 1226 5.26 1295 6.33 1329 6.89 1362 7.46 1395 8.01 1428 8.59 1458 9.16 1490 9.7614500 1264 5.77 1332 6.87 1365 7.44 1397 8.03 1429 8.61 1461 9.20 1490 9.79 1521 10.40



7000 1140 3.74 1228 4.47 1312 5.27 1392 6.08 1469 6.93 1541 7.77 1612 8.66 1680 9.607500 1157 4.01 1243 4.80 1325 5.61 1403 6.45 1477 7.30 1550 8.22 1619 9.12 1685 10.048000 1175 4.32 1260 5.11 1340 5.97 1416 6.83 1489 7.74 1559 8.64 1628 9.60 1694 10.588500 1196 4.63 1278 5.47 1355 6.35 1431 7.24 1502 8.17 1572 9.13 1638 10.08 1704 11.099000 1217 4.97 1297 5.84 1373 6.75 1446 7.68 1517 8.64 1584 9.60 1650 10.62 1714 11.639500 1240 5.33 1318 6.24 1393 7.17 1464 8.12 1533 9.12 1600 10.13 1663 11.14 1726 12.22

10000 1265 5.72 1340 6.66 1412 7.60 1482 8.61 1549 9.60 1615 10.67 1678 11.72 1740 12.7810500 1290 6.12 1363 7.09 1434 8.10 1502 9.10 1569 10.16 1632 11.21 1694 12.31 1755 13.4411000 1315 6.56 1387 7.56 1456 8.58 1523 9.63 1587 10.71 1650 11.82 1711 12.91 1771 14.08




0.50 1.00 1.25 1.50 1.75 2.00 2.25CFMStd.Air

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

10000 366 2.05 476 3.11 525 3.68 573 4.28 - - - - - -

11000 377 2.49 483 3.59 531 4.22 576 4.86 618 5.50 - - - -

12000 391 3.01 492 4.22 538 4.86 581 5.50 622 6.22 661 6.86 - -

13000 406 3.59 503 4.91 547 5.58 588 6.28 628 6.97 666 7.74 702 8.45

14000 422 4.29 515 5.65 556 6.35 596 7.12 636 7.87 673 8.62 708 9.45

15000 439 5.04 526 6.53 568 7.30 606 8.03 644 8.82 680 9.64 714 10.48

16000 456 5.94 539 7.44 580 8.28 617 9.10 653 9.90 687 10.74 721 11.60

17000 475 6.92 554 8.55 592 9.39 628 10.24 663 11.11 696 11.97 729 12.85

18000 493 8.00 569 9.70 605 10.55 641 11.52 675 12.43 707 13.31 739 14.25

19000 513 9.23 584 11.01 619 11.95 653 12.85 687 13.82 719 14.81 749 15.72

20000 531 10.58 600 12.43 633 13.37 666 14.35 698 15.38 730 16.32 760 17.41


2.50 3.00 3.50 4.00 4.50 5.00CFMStd.Air

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

10000 - - - - - - - - - - - -

11000 - - - - - - - - - - - -

12000 - - - - - - - - - - - -

13000 - - - - - - - - - - - -

14000 742 10.24 810 11.97 - - - - - - - -

15000 748 11.31 811 13.00 - - - - - - - -

16000 754 12.51 817 14.33 874 16.04 - - - - - -

17000 761 13.76 822 15.61 881 17.64 935 19.42 - - - -

18000 769 15.18 829 17.17 886 19.08 940 21.25 992 23.14 - -

19000 779 16.72 836 18.62 893 20.85 946 22.93 997 25.17 1045 27.13

20000 789 18.35 846 20.50 900 22.60 952 25.25 1002 26.31 1051 28.71


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

10000 923 2.30 1016 3.10 1060 3.51 1103 3.93 1145 4.37 1186 4.82 1226 5.26 1265 5.72

11000 997 2.87 1083 3.75 1124 4.19 1164 4.64 1203 5.11 1241 5.60 1279 6.08 1315 6.56

12000 1072 3.55 1152 4.49 1191 4.99 1228 5.47 1265 5.97 1301 6.48 1336 6.99 1371 7.51

13000 1148 4.35 1223 5.35 1259 5.88 1294 6.41 1329 6.93 1363 7.47 1397 8.03 1430 8.57

14000 1226 5.26 1295 6.33 1329 6.89 1362 7.46 1395 8.01 1428 8.59 1458 9.16 1490 9.76

15000 1303 6.31 1369 7.46 1401 8.04 1432 8.64 1463 9.23 1494 9.84 1523 10.45 1553 11.06

16000 1381 7.47 1443 8.71 1473 9.33 1504 9.96 1533 10.58 1561 11.22 1590 11.87 1618 12.53

17000 1460 8.79 1519 10.10 1547 10.75 1575 11.42 1604 12.09 1630 12.77 1657 13.45 1685 14.13

18000 1538 10.27 1595 11.65 1622 12.34 1648 13.05 1676 13.75 1702 14.46 1727 15.17 1753 15.89

19000 1617 11.90 1672 13.38 1697 14.10 1723 14.83 1748 15.58 1774 16.32 1798 17.07 1823 17.83

20000 1696 13.71 1749 15.27 1774 16.04 1798 16.80 1822 17.58 1846 18.37 1870 19.15 1894 19.93


3.00 3.50 4.00 4.50 5.00 5.50 6.00CFMStd.Air


10000 1340 6.66 1412 7.60 1482 8.61 1549 9.60 1615 10.67 1678 11.72 1740 12.78

11000 1387 7.56 1456 8.58 1523 9.63 1587 10.71 1650 11.82 1711 12.91 1771 14.08

12000 1438 8.57 1505 9.66 1568 10.77 1630 11.92 1690 13.05 1749 14.25 1807 15.45

13000 1494 9.70 1555 10.84 1617 12.03 1676 13.21 1735 14.45 1790 15.68 1845 17.10

14000 1551 10.94 1611 12.15 1669 13.39 1726 14.66 1781 15.94 1835 17.24 1889 18.58

15000 1612 12.33 1668 13.61 1724 14.91 1779 16.24 1831 17.58 1884 18.95 1934 20.33



Total Static Pressure - Inches of Water0.50 1.00 1.25 1.50 1.75 2.00 2.25

CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

12000 333 2.57 428 3.79 473 4.55 515 5.33 - - - - - -13000 350 3.17 433 4.30 477 5.07 518 5.89 556 6.73 - - - -14000 368 3.82 438 4.89 481 5.65 521 6.51 559 7.40 594 8.30 - -15000 387 4.60 445 5.55 485 6.31 525 7.17 562 8.08 597 9.06 631 10.0016000 407 5.48 457 6.39 492 7.10 530 7.95 567 8.89 602 9.84 634 10.8917000 426 6.48 471 7.33 501 8.00 536 8.82 572 9.77 606 10.77 639 11.7918000 447 7.57 488 8.49 512 9.05 542 9.79 576 10.70 610 11.75 643 12.8119000 467 8.78 506 9.74 526 10.23 553 10.98 583 11.85 614 12.78 647 13.9120000 487 10.13 524 11.11 544 11.68 564 12.26 591 13.07 621 14.08 651 15.0821000 507 11.60 543 12.66 561 13.22 580 13.76 603 14.54 627 15.34 657 16.4822000 527 13.21 562 14.37 579 14.89 597 15.51 615 16.05 639 17.02 663 17.9323000 548 14.96 583 16.24 597 16.73 615 17.39 631 17.97 651 18.71 674 19.6624000 568 16.85 603 18.22 617 18.79 632 19.37 649 20.06 664 20.62 686 21.5625000 588 18.89 622 20.38 638 21.01 651 21.52 666 22.26 682 22.93 697 23.5126000 609 21.09 643 22.68 657 23.38 671 23.96 685 24.59 700 25.34 715 25.99



12000 - - - - - - - - - - - -13000 - - - - - - - - - - - -14000 - - - - - - - - - - - -15000 - - - - - - - - - - - -16000 665 11.89 - - - - - - - - - -17000 670 12.88 728 15.08 - - - - - - - -18000 673 13.89 731 16.21 786 18.58 - - - - - -19000 677 15.04 734 17.36 788 19.79 840 22.36 - - - -20000 682 16.26 739 18.66 791 21.19 842 23.69 891 26.43 - -21000 686 17.56 743 20.01 795 22.51 845 25.30 892 27.97 939 30.7922000 691 19.08 747 21.52 799 24.16 849 26.82 895 29.70 - -23000 698 20.68 751 23.08 803 25.68 852 28.56 - - - -24000 708 22.51 757 24.89 808 27.56 857 30.37 - - - -25000 719 24.63 763 26.82 812 29.36 - - - - - -26000 731 26.76 771 28.88 - - - - - - - -



12000 791 2.54 877 3.49 918 3.99 957 4.50 996 5.03 1033 5.55 1070 6.09 1105 6.6313000 843 3.07 923 4.09 961 4.62 999 5.16 1035 5.71 1071 6.26 1105 6.83 1140 7.4114000 895 3.65 970 4.74 1007 5.31 1042 5.88 1077 6.46 1111 7.06 1144 7.66 1176 8.2715000 949 4.32 1020 5.48 1054 6.08 1088 6.69 1121 7.30 1153 7.93 1185 8.55 1216 9.2016000 1002 5.09 1069 6.31 1102 6.95 1134 7.58 1165 8.22 1197 8.88 1227 9.55 1257 10.2117000 1056 5.92 1120 7.23 1152 7.88 1181 8.57 1212 9.25 1241 9.93 1270 10.64 1299 11.3318000 1110 6.87 1171 8.24 1201 8.93 1230 9.64 1259 10.35 1288 11.08 1314 11.82 1342 12.5619000 1166 7.93 1224 9.36 1252 10.10 1280 10.84 1307 11.58 1335 12.34 1362 13.10 1387 13.8820000 1221 9.08 1276 10.58 1303 11.35 1330 12.13 1357 12.91 1382 13.71 1408 14.50 1434 15.3021000 1276 10.34 1330 11.93 1355 12.73 1381 13.54 1406 14.36 1431 15.18 1455 16.01 1480 16.8522000 1332 11.72 1383 13.39 1408 14.23 1432 15.07 1456 15.92 1481 16.77 1504 17.64 1527 18.5223000 1387 13.22 1437 14.97 1461 15.85 1484 16.73 1508 17.61 1532 18.51 1554 19.40 1576 20.3124000 1443 14.86 1491 16.69 1514 17.60 1537 18.51 1559 19.45 1582 20.37 1604 21.29 1626 22.2325000 1499 16.63 1546 18.55 1569 19.49 1590 20.44 1611 21.39 1633 22.36 1655 23.32 1676 24.3026000 1555 18.54 1601 20.55 1622 21.52 1644 22.50 1664 23.49 1684 24.50 1706 25.50 1726 26.50



12000 1174 7.77 1241 8.93 1304 10.11 1366 11.35 1424 12.60 1482 13.86 1538 15.2013000 1206 8.59 1270 9.81 1331 11.08 1391 12.36 1447 13.66 1504 15.03 1557 16.3814000 1240 9.52 1301 10.80 1361 12.12 1417 13.45 1474 14.83 1527 16.21 1580 17.6615000 1276 10.51 1336 15.72 1393 13.22 1448 14.64 1501 16.04 1554 17.53 1605 19.0216000 1315 11.60 1371 13.00 1427 14.45 1479 15.89 1533 17.40 1582 18.91 1633 20.4517000 1354 12.78 1409 14.25 1463 15.74 1514 17.27 1564 18.81 1614 20.41 1661 22.0218000 1397 14.06 1449 15.60 1500 17.14 1550 18.74 1599 20.35 1646 21.97 1693 23.6619000 1439 15.44 1489 17.03 1539 18.66 1587 20.31 1635 21.99 1681 23.71 1726 25.4120000 1483 16.93 1533 18.59 1579 20.28 1626 22.00 1672 23.73 1717 25.51 1761 27.30


SECTION 9, 19 & 20SIZE 39 & 48 SIZE 630 Forward Curved Fan

Total Static Pressure - Inches of Water0.50 1.00 1.25 1.50 1.75 2.00

CFMStd.Air RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

17000 426 6.48 471 7.33 501 8.00 536 8.82 572 9.77 606 10.7718000 447 7.57 488 8.49 512 9.05 542 9.79 576 10.70 610 11.7519000 467 8.78 506 9.74 526 10.23 553 10.98 583 11.85 614 12.7820000 487 10.13 524 11.11 544 11.68 564 12.26 591 13.07 621 14.0821000 507 11.60 543 12.66 561 13.22 580 13.76 603 14.54 627 15.3422000 527 13.21 562 14.37 579 14.89 597 15.51 615 16.05 639 17.0223000 548 14.96 583 16.24 597 16.73 615 17.39 631 17.97 651 18.7124000 568 16.85 603 18.22 617 18.79 632 19.37 649 20.06 664 20.6225000 588 18.89 622 20.38 638 21.01 651 21.52 666 22.26 682 22.9326000 609 21.09 643 22.68 657 23.38 671 23.96 685 24.59 700 25.3427000 629 23.48 663 25.17 677 25.91 690 26.56 703 27.12 718 27.9128000 651 26.02 683 27.84 697 28.62 710 29.33 723 29.96 735 30.6129000 672 28.78 702 30.69 - - - - - - - -

SIZE 39 & 48 SIZE 630 Forward Curved FanTotal Static Pressure - Inches of Water


17000 639 11.79 670 12.88 728 15.08 - - - - - -18000 643 12.81 673 13.89 731 16.21 - - - - - -19000 647 13.91 677 15.04 734 17.36 788 19.79 - - - -20000 651 15.08 682 16.26 739 18.66 791 21.19 842 23.69 - -21000 657 16.48 686 17.56 743 20.01 795 22.51 845 25.30 - -22000 663 17.93 691 19.08 747 21.52 799 24.16 849 26.82 895 29.7023000 674 19.66 698 20.68 751 23.08 803 25.68 852 28.56 - -24000 686 21.56 708 22.51 757 24.89 808 27.56 857 30.37 - -25000 697 23.51 719 24.63 763 26.82 812 29.36 - - - -26000 715 25.99 731 26.76 771 28.88 - - - - - -27000 732 28.65 746 29.29 - - - - - - - -



17000 775 4.22 845 5.55 878 6.24 911 6.93 941 7.64 972 8.38 1003 9.12 1032 9.8618000 812 4.84 878 6.24 911 6.96 941 7.70 972 8.44 1001 9.19 1031 9.97 1060 10.7519000 850 5.53 913 7.00 943 7.76 973 8.52 1002 9.29 1031 10.08 1059 10.88 1088 11.7020000 888 6.28 949 7.83 977 8.61 1006 9.40 1034 10.21 1062 11.05 1090 11.87 1115 12.7121000 926 7.12 984 8.72 1012 9.55 1040 10.37 1067 11.22 1093 12.07 1120 12.94 1145 13.8222000 965 8.03 1021 9.70 1048 10.55 1073 11.42 1100 12.30 1126 13.18 1152 14.08 1176 15.0023000 1003 9.01 1057 10.75 1084 11.63 1108 12.54 1134 13.45 1159 14.37 1183 15.30 1207 16.2524000 1042 10.07 1094 11.89 1119 12.81 1144 13.74 1168 14.69 1193 15.64 1216 16.60 1239 17.5825000 1082 11.22 1131 13.11 1156 14.06 1179 15.03 1203 16.01 1226 17.00 1249 18.00 1272 19.00

26000 1121 12.46 1169 14.42 1192 15.41 1215 16.42 1238 17.43 1261 18.45 1283 19.49 1305 20.5227000 1160 13.78 1207 15.82 1229 16.86 1251 17.90 1274 18.93 1296 20.00 1316 21.06 1339 22.1428000 1199 15.20 1245 17.33 1267 18.39 1288 19.47 1310 20.55 1331 21.63 1351 22.74 1372 23.8529000 1238 16.73 1283 18.93 1304 20.03 1325 21.15 1346 22.26 1367 23.38 1387 24.52 1407 25.6530000 1278 18.35 1321 20.65 1342 21.77 1363 22.93 1382 24.08 1403 25.23 1422 26.39 1442 27.5731000 1317 20.08 1360 22.47 1380 23.64 1400 24.81 1419 25.99 1439 27.19 1458 28.39 1477 29.6032000 1358 21.93 1399 24.40 1418 25.60 1438 26.80 1456 28.04 1475 29.26 1495 30.50 1513 31.73



17000 1090 11.39 1146 12.98 1199 14.57 1251 16.25 1302 17.93 1350 19.64 1399 21.4318000 1115 12.34 1169 13.96 1222 15.67 1271 17.34 1320 19.13 1369 20.91 1414 22.7019000 1141 13.35 1194 15.06 1243 16.77 1294 18.58 1340 20.35 1387 22.23 1433 24.1020000 1168 14.45 1218 16.21 1268 18.00 1315 19.83 1363 21.72 1408 23.59 1452 25.5521000 1197 15.61 1245 17.41 1294 19.29 1340 21.18 1385 23.11 1430 25.08 1473 27.0622000 1225 16.83 1273 18.74 1318 20.64 1365 22.61 1409 24.60 1452 26.62 1495 28.6923000 1256 18.15 1301 20.11 1346 22.10 1391 24.10 1434 26.18 1476 28.25 1517 30.3724000 1285 19.56 1330 21.56 1374 23.64 1417 25.71 1460 27.83 1501 29.98 1541 32.14


SECTION 9, 19 & 20SIZE 48 SIZE 800 Airfoil Fan


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


24000 732 6.50 786 8.23 813 9.13 838 10.02 864 10.95 889 11.87 913 12.81 937 13.79

25000 757 7.20 810 8.99 836 9.92 861 10.85 885 11.79 910 12.76 933 13.74 956 14.73

26000 784 7.95 835 9.81 859 10.76 884 11.73 907 12.70 931 13.69 954 14.71 976 15.72

27000 810 8.75 859 10.68 883 11.66 906 12.66 930 13.67 952 14.69 975 15.73 997 16.78

28000 836 9.61 884 11.60 907 12.61 929 13.64 952 14.69 974 15.75 996 16.80 1018 17.89

29000 862 10.53 908 12.58 931 13.63 953 14.69 975 15.77 997 16.86 1018 17.94 1039 19.05

30000 889 11.51 934 13.63 956 14.71 977 15.80 998 16.91 1020 18.02 1040 19.15 1060 20.29

31000 915 12.56 959 14.74 980 15.85 1002 16.98 1022 18.10 1043 19.26 1063 20.42 1083 21.59

32000 942 13.65 985 15.91 1005 17.06 1026 18.21 1046 19.38 1066 20.56 1086 21.75 1105 22.95

33000 969 14.82 1010 17.15 1030 18.33 1050 19.52 1070 20.72 1089 21.92 1109 23.16 1128 24.39

34000 995 16.05 1036 18.45 1055 19.67 1075 20.89 1094 22.12 1113 23.37 1132 24.62 1151 25.89

35000 1022 17.37 1062 19.85 1081 21.08 1100 22.34 1119 23.60 1137 24.87 1155 26.16 1173 27.46

36000 1049 18.75 1088 21.29 1107 22.57 1125 23.87 1143 25.15 1161 26.47 1179 27.78 1197 29.10

37000 1076 20.19 1114 22.83 1132 24.13 1150 25.46 1168 26.79 1186 28.13 1203 29.47 1220 30.83

38000 1103 21.72 1140 24.44 1158 25.77 1175 27.12 1193 28.49 1210 29.86 1227 31.24 1244 32.63

39000 1130 23.33 1166 26.13 1184 27.50 1201 28.88 1218 30.28 1235 31.68 1252 33.08 1268 34.52

40000 1157 25.02 1193 27.90 1210 29.29 1227 30.71 1243 32.15 1260 33.58 1276 35.03 1293 36.47

41000 1184 26.80 1219 29.76 1236 31.18 1252 32.63 1268 34.09 1284 35.58 1301 37.04 1317 38.53

42000 1211 28.65 1246 31.70 1262 33.17 1278 34.64 1294 36.13 1309 37.64 1325 39.15 1341 40.67

43000 1238 30.61 1272 33.74 1288 35.23 1304 36.73 1320 38.26 1335 39.80 1350 41.34 1366 42.89

44000 1265 32.64 1299 35.86 1315 37.39 1330 38.91 1345 40.47 1360 42.05 1375 43.63 1390 45.21


2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00CFMStd.Air


24000 937 13.79 983 15.73 1029 17.76 1072 19.78 1115 21.90 1156 24.00 1196 26.21 1236 28.43

25000 956 14.73 1002 16.74 1046 18.81 1088 20.90 1130 23.06 1171 25.27 1210 27.46 1249 29.77

26000 976 15.72 1021 17.81 1063 19.90 1106 22.10 1146 24.28 1186 26.56 1224 28.84 1262 31.13

27000 997 16.78 1040 18.91 1082 21.09 1123 23.32 1163 25.59 1201 27.87 1240 30.26 1277 32.63

28000 1018 17.89 1060 20.07 1101 22.32 1140 24.59 1180 26.95 1218 29.29 1255 31.69 1292 34.16

29000 1039 19.05 1080 21.32 1120 23.62 1159 25.96 1197 28.33 1235 30.78 1271 33.21 1307 35.72

30000 1060 20.29 1101 22.62 1140 24.96 1178 27.38 1215 29.80 1252 32.29 1288 34.83 1323 37.33

31000 1083 21.59 1122 23.97 1160 26.38 1197 28.85 1234 31.36 1269 33.86 1305 36.47 1340 39.09

32000 1105 22.95 1143 25.39 1181 27.87 1217 30.38 1253 32.96 1288 35.55 1322 38.18 1357 40.87

33000 1128 24.39 1165 26.88 1202 29.43 1237 32.00 1272 34.63 1307 37.29 1340 39.96 1374 42.71

34000 1151 25.89 1187 28.45 1223 31.05 1258 33.70 1292 36.35 1326 39.10 1359 41.85 1391 44.60

35000 1173 27.46 1209 30.08 1244 32.74 1279 35.46 1312 38.18 1345 40.96 1378 43.79 1410 46.62

36000 1197 29.10 1232 31.80 1266 34.52 1300 37.29 1333 40.08 1365 42.89 1397 45.80 1429 48.71

37000 1220 30.83 1255 33.58 1288 36.37 1321 39.20 1354 42.06 1385 44.94 1417 47.88 1448 50.85

FAN PERFORMANCE TABLES: RETURN AIR FANS

SECTION 6SIZE 8 SIZE 315 Forward Curved Fan


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


3000 616 0.70 830 1.11 - - - - - - - - - - - -

3300 634 0.84 835 1.28 929 1.52 - - - - - - - - - -3600 656 1.02 844 1.46 931 1.72 - - - - - - - - - -

3900 679 1.22 855 1.69 939 1.95 1020 2.22 - - - - - - - -

4200 702 1.43 868 1.93 949 2.20 1027 2.47 1101 2.78 - - - - - -4500 730 1.69 887 1.99 962 2.50 1036 2.80 1108 3.08 1177 3.42 1245 3.75 - -

4800 758 1.97 906 2.53 976 2.83 1048 3.14 1118 3.45 1185 3.77 1249 4.12 1312 4.46

SIZE 8 SIZE 400 Air Foil FanTotal Static Pressure - Inches of Water

0.50 1.00 1.50 1.75 2.00 2.25 2.50CFMStd.Air


1300 703 0.14 966 0.31 1179 0.53 1274 0.62 1363 0.74 1447 0.87 1527 0.99

1600 730 0.17 979 0.37 1183 0.58 1276 0.71 1362 0.82 1444 0.97 1522 1.09

1900 764 0.21 999 0.43 1195 0.65 1284 0.78 1368 0.91 1448 1.05 1524 1.192200 804 0.26 1026 0.48 1214 0.74 1300 0.88 1380 1.01 1458 1.16 1533 1.31

2500 850 0.31 1059 0.55 1238 0.82 1320 0.97 1399 1.12 1474 1.28 1546 1.43

2800 898 0.37 1095 0.64 1267 0.92 1347 1.08 1422 1.24 1495 1.41 1565 1.563100 950 0.44 1136 0.72 1301 1.04 1377 1.19 1450 1.36 1520 1.53 1587 1.70

3400 1003 0.51 1180 0.82 1338 1.15 1411 1.32 1481 1.51 1549 1.68 1615 1.863700 1060 0.61 1227 0.94 1378 1.28 1448 1.46 1516 1.65 1582 1.85 1645 2.03

4000 1118 0.71 1276 1.07 1420 1.42 1488 1.62 1554 1.82 1617 2.02 1679 2.22

4300 1176 0.82 1328 1.19 1467 1.59 1532 1.79 1594 1.99 1656 2.20 1716 2.414600 1237 0.95 1381 1.35 1514 1.76 1577 1.97 1638 2.19 1697 2.40 1754 2.63


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


3600 525 0.71 709 1.14 - - - - - - - - - - - -

4000 541 0.87 711 1.32 - - - - - - - - - - - -

4400 559 1.07 720 1.53 793 1.79 - - - - - - - - - -

4800 582 1.29 731 1.79 802 2.06 868 2.33 - - - - - - - -5200 613 1.58 747 2.09 813 2.37 878 2.66 938 2.95 - - - - - -

5600 644 1.90 762 2.41 826 2.73 888 3.04 947 3.34 1003 3.65 - - - -

6000 677 2.29 780 2.77 842 3.10 900 3.42 958 3.76 1012 4.09 1066 4.43 1120 4.806400 711 2.73 801 3.20 858 3.52 916 3.86 969 4.23 1024 4.59 1075 4.93 1125 5.31

6800 745 3.21 824 3.66 877 3.99 931 4.36 985 4.73 1035 5.09 1086 5.48 1134 5.84


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


2000 651 0.21 873 0.45 968 0.60 1056 0.74 1138 0.88 1215 1.04 1289 1.21 1359 1.38

2400 683 0.27 892 0.53 984 0.68 1067 0.82 1146 0.99 1221 1.15 1293 1.34 1361 1.52

2800 722 0.33 918 0.61 1004 0.77 1086 0.94 1162 1.11 1233 1.28 1303 1.48 1369 1.663200 764 0.40 950 0.71 1031 0.88 1109 1.05 1182 1.24 1251 1.42 1318 1.62 1382 1.83

3600 812 0.48 985 0.82 1063 0.99 1137 1.19 1207 1.38 1274 1.58 1339 1.79 1400 2.004000 861 0.58 1025 0.94 1099 1.14 1169 1.34 1237 1.55 1301 1.76 1364 1.97 1422 2.20

4400 913 0.68 1067 1.08 1138 1.29 1205 1.51 1270 1.72 1333 1.95 1392 2.17 1450 2.41

4800 966 0.81 1112 1.24 1180 1.45 1245 1.68 1306 1.92 1367 2.16 1423 2.40 1480 2.645200 1022 0.97 1161 1.41 1225 1.65 1286 1.87 1346 2.13 1403 2.37 1460 2.64 1513 2.90

5600 1078 1.12 1210 1.61 1272 1.85 1331 2.10 1387 2.36 1443 2.63 1497 2.90 1549 3.17

6000 1136 1.31 1262 1.82 1319 2.07 1377 2.34 1432 2.61 1485 2.90 1537 3.18 1587 3.476400 1195 1.52 1313 2.05 1371 2.33 1424 2.61 1478 2.90 1530 3.18 1579 3.48 1627 3.78

6800 1254 1.75 1368 2.32 1422 2.60 1474 2.90 1525 3.20 1575 3.51 1623 3.81 1671 4.12

FAN PERFORMANCE TABLES: RETURN AIR FANS

SECTION 6SIZE 18 SIZE 450 Forward Curved Fan


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


5500 418 1.02 563 1.65 - - - - - - - - - - - -

6000 428 1.21 567 1.87 630 2.23 - - - - - - - - - -

6500 439 1.42 572 2.12 632 2.51 - - - - - - - - - -

7000 451 1.65 578 2.37 636 2.78 692 3.22 - - - - - - - -

7500 465 1.92 586 2.70 642 3.11 695 3.54 748 4.01 - - - - - -

8000 479 2.22 595 3.04 649 3.47 700 3.92 750 4.37 799 4.89 - - - -

8500 493 2.56 606 3.42 657 3.86 707 4.29 755 4.82 801 5.31 848 5.84 - -

9000 509 2.93 616 3.82 666 4.30 715 4.79 761 5.26 806 5.80 850 6.32 893 6.89

9500 524 3.31 628 4.29 677 4.79 723 5.27 768 5.78 812 6.31 855 6.85 896 7.41

10000 541 3.78 641 4.76 688 5.27 733 5.82 777 6.35 819 6.85 860 7.44 900 8.01

10500 557 4.26 654 5.31 699 5.85 744 6.39 786 6.92 827 7.51 866 8.01 906 8.66


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


5000 994 0.88 1136 1.32 1202 1.55 1265 1.78 1326 2.02 1384 2.26 1441 2.51 1497 2.77

5500 1064 1.08 1197 1.55 1260 1.79 1319 2.05 1377 2.30 1433 2.56 1486 2.83 1540 3.10

6000 1136 1.31 1262 1.82 1319 2.07 1377 2.34 1432 2.61 1485 2.90 1537 3.18 1587 3.47

6500 1209 1.58 1328 2.12 1383 2.40 1437 2.68 1489 2.97 1541 3.27 1590 3.57 1638 3.86

7000 1283 1.87 1396 2.46 1448 2.76 1500 3.05 1550 3.35 1599 3.66 1646 3.99 1692 4.30

7500 1360 2.22 1465 2.83 1515 3.14 1565 3.47 1612 3.79 1658 4.12 1705 4.46 1749 4.79

8000 1436 2.60 1536 3.25 1584 3.58 1630 3.92 1677 4.26 1721 4.62 1764 4.96 1808 5.31

8500 1513 3.03 1609 3.72 1654 4.08 1700 4.43 1743 4.79 1786 5.16 1827 5.53 1868 5.89

9000 1590 3.51 1682 4.23 1725 4.60 1769 4.99 1811 5.35 1851 5.74 1892 6.12 1931 6.52

9500 1669 4.03 1755 4.80 1797 5.20 1839 5.58 1879 5.98 1919 6.38 1957 6.79 1996 7.20

10000 1747 4.62 1830 5.43 1870 5.84 1911 6.25 1949 6.66 1987 7.09 2025 7.50 2061 7.93

10500 1826 5.27 1907 6.11 1945 6.53 1983 6.96 2020 7.40 2057 7.84 2093 8.28 2129 8.72


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


8500 425 1.96 548 2.87 604 3.38 656 3.92 706 4.46 - - - - - -

9000 435 2.22 553 3.18 608 3.71 659 4.23 708 4.80 754 5.40 - - - -

9500 446 2.50 559 3.48 613 4.01 663 4.59 711 5.18 756 5.75 799 6.41 - -

10000 456 2.80 567 3.84 618 4.40 667 4.97 714 5.54 759 6.19 801 6.78 843 7.49

10500 469 3.15 575 4.22 624 4.77 672 5.35 718 6.01 762 6.60 804 7.30 845 7.88

11000 480 3.51 583 4.62 630 5.20 678 5.82 722 6.43 766 7.10 808 7.77 848 8.47

11500 492 3.89 592 5.06 639 5.67 684 6.26 727 6.92 770 7.61 811 8.27 851 8.99

12000 506 4.35 600 5.51 647 6.12 690 6.78 733 7.46 775 8.10 815 8.86 854 9.52

12500 519 4.82 611 6.01 655 6.68 698 7.34 740 7.98 780 8.71 820 9.42 858 10.18

13000 533 5.31 621 6.56 664 7.23 706 7.90 746 8.59 786 9.32 824 10.03 862 10.82

13500 546 5.82 631 7.13 674 7.80 715 8.51 754 9.25 792 9.91 830 10.74 866 11.42

14000 559 6.41 643 7.73 683 8.44 723 9.19 762 9.90 799 10.65 836 11.41 872 12.22

14500 574 7.05 654 8.41 693 9.13 732 9.86 770 10.60 808 11.41 843 12.12 879 12.98

15000 588 7.71 666 9.12 705 9.84 742 10.54 779 11.38 815 12.14 850 12.97 884 13.72

15500 604 8.41 678 9.84 715 10.55 752 11.36 788 12.16 823 12.95 858 13.81 891 14.60

16000 618 9.16 690 10.60 726 11.39 762 12.20 797 12.95 832 13.85 866 14.63 899 15.54

FAN PERFORMANCE TABLES: RETURN AIR FANS RETURN-AIR

SECTION 6SIZE 26 SIZE 450 Air Foil Fan


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


8500 1513 3.03 1609 3.72 1654 4.08 1700 4.43 1743 4.79 1786 5.16 1827 5.53 1868 5.89

9000 1590 3.51 1682 4.23 1725 4.60 1769 4.99 1811 5.35 1851 5.74 1892 6.12 1931 6.52

9500 1669 4.03 1755 4.80 1797 5.20 1839 5.58 1879 5.98 1919 6.38 1957 6.79 1996 7.20

10000 1747 4.62 1830 5.43 1870 5.84 1911 6.25 1949 6.66 1987 7.09 2025 7.50 2061 7.93

10500 1826 5.27 1907 6.11 1945 6.53 1983 6.96 2020 7.40 2057 7.84 2093 8.28 2129 8.72

11000 1906 5.97 1983 6.85 2019 7.30 2056 7.74 2092 8.20 2127 8.65 2162 9.12 2197 9.57

11500 1986 6.73 2059 7.66 2095 8.12 2130 8.59 2165 9.06 2199 9.53 2232 10.01 2266 10.50

12000 2065 7.56 2136 8.52 2171 9.01 2204 9.50 2238 9.99 2271 10.48 2304 10.98 2336 11.48

12500 2145 8.47 2215 9.46 2247 9.97 2279 10.47 2312 10.98 2344 11.49 2376 12.00 2407 12.53

13000 2226 9.43 2292 10.48 2325 10.99 2356 11.52 2387 12.06 2418 12.58 2449 13.11 2479 13.65

13500 2306 10.48 2370 11.56 2402 12.10 2433 12.64 2463 13.20 2493 13.75 2522 14.29 2552 14.84

14000 2387 11.60 2448 12.73 2479 13.28 2509 13.85 2538 14.42 2567 14.99 2597 15.55 2625 16.12

14500 2468 12.80 2528 13.98 2557 14.54 2586 15.13 2615 15.71 2643 16.31 2671 16.90 2699 17.49

15000 2548 14.09 2607 15.30 2636 15.89 2664 16.49 2691 17.10 2719 17.71 2745 18.32 2773 18.93


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


12000 333 2.57 428 3.79 473 4.55 515 5.33 - - - - - - - -

12500 341 2.87 431 4.03 475 4.77 516 5.60 - - - - - - - -

13000 350 3.17 433 4.30 477 5.07 518 5.89 556 6.73 - - - - - -

13500 358 3.49 435 4.55 479 5.35 519 6.18 557 7.05 - - - - - -

14000 368 3.82 438 4.89 481 5.65 521 6.51 559 7.40 594 8.30 - - - -

14500 377 4.19 441 5.20 483 5.98 523 6.85 561 7.73 596 8.66 - - - -

15000 387 4.60 445 5.55 485 6.31 525 7.17 562 8.08 597 9.06 631 10.00 664 11.02

15500 397 5.03 451 5.97 488 6.70 527 7.56 564 8.49 599 9.45 632 10.45 664 11.46

16000 407 5.48 457 6.39 492 7.10 530 7.95 567 8.89 602 9.84 634 10.89 665 11.89

16500 416 5.97 462 6.82 495 7.50 533 8.34 570 9.30 604 10.31 637 11.32 667 12.40

17000 426 6.48 471 7.33 501 8.00 536 8.82 572 9.77 606 10.77 639 11.79 670 12.88

17500 437 7.00 479 7.90 507 8.52 539 9.32 574 10.23 608 11.21 641 12.31 672 13.35

18000 447 7.57 488 8.49 512 9.05 542 9.79 576 10.70 610 11.75 643 12.81 673 13.89

18500 457 8.15 497 9.10 518 9.59 547 10.35 579 11.28 612 12.27 645 13.29 675 14.47


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


11000 997 2.87 1083 3.75 1124 4.19 1164 4.64 1203 5.11 1241 5.60 1279 6.08 1315 6.56

11500 1034 3.20 1117 4.10 1157 4.57 1195 5.04 1234 5.53 1271 6.02 1307 6.52 1343 7.02

12000 1072 3.55 1152 4.49 1191 4.99 1228 5.47 1265 5.97 1301 6.48 1336 6.99 1371 7.51

12500 1110 3.93 1188 4.91 1224 5.41 1261 5.92 1296 6.43 1332 6.96 1366 7.49 1400 8.03

13000 1148 4.35 1223 5.35 1259 5.88 1294 6.41 1329 6.93 1363 7.47 1397 8.03 1430 8.57

13500 1188 4.79 1259 5.84 1294 6.36 1328 6.90 1362 7.46 1395 8.01 1428 8.58 1460 9.15

14000 1226 5.26 1295 6.33 1329 6.89 1362 7.46 1395 8.01 1428 8.59 1458 9.16 1490 9.76

14500 1264 5.77 1332 6.87 1365 7.44 1397 8.03 1429 8.61 1461 9.20 1490 9.79 1521 10.40

15000 1303 6.31 1369 7.46 1401 8.04 1432 8.64 1463 9.23 1494 9.84 1523 10.45 1553 11.06

15500 1342 6.87 1406 8.05 1437 8.66 1468 9.28 1498 9.89 1527 10.51 1556 11.15 1585 11.78

16000 1381 7.47 1443 8.71 1473 9.33 1504 9.96 1533 10.58 1561 11.22 1590 11.87 1618 12.53

16500 1420 8.11 1481 9.37 1510 10.03 1539 10.67 1568 11.32 1595 11.97 1624 12.64 1652 13.31

17000 1460 8.79 1519 10.10 1547 10.75 1575 11.42 1604 12.09 1630 12.77 1657 13.45 1685 14.13

17500 1499 9.52 1557 10.85 1584 11.53 1612 12.22 1640 12.90 1667 13.59 1692 14.29 1719 15.00

18000 1538 10.27 1595 11.65 1622 12.34 1648 13.05 1676 13.75 1702 14.46 1727 15.17 1753 15.89

18500 1578 11.06 1634 12.50 1659 13.20 1685 13.92 1712 14.64 1738 15.37 1763 16.09 1788 16.83

FAN PERFORMANCE TABLES: RETURN AIR FANS RETURN-AIR

SECTION 6SIZE 39 & 48 SIZE 630 Forward Curved Fan


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


12000 333 2.57 428 3.79 473 4.55 515 5.33 - - - - - - - -

13000 350 3.17 433 4.30 477 5.07 518 5.89 556 6.73 - - - - - -

14000 368 3.82 438 4.89 481 5.65 521 6.51 559 7.40 594 8.30 - - - -

15000 387 4.60 445 5.55 485 6.31 525 7.17 562 8.08 597 9.06 631 10.00 664 11.02

16000 407 5.48 457 6.39 492 7.10 530 7.95 567 8.89 602 9.84 634 10.89 665 11.89

17000 426 6.48 471 7.33 501 8.00 536 8.82 572 9.77 606 10.77 639 11.79 670 12.88

18000 447 7.57 488 8.49 512 9.05 542 9.79 576 10.70 610 11.75 643 12.81 673 13.89

19000 467 8.78 506 9.74 526 10.23 553 10.98 583 11.85 614 12.78 647 13.91 677 15.04

20000 487 10.13 524 11.11 544 11.68 564 12.26 591 13.07 621 14.08 651 15.08 682 16.26

21000 507 11.60 543 12.66 561 13.22 580 13.76 603 14.54 627 15.34 657 16.48 686 17.56

22000 527 13.21 562 14.37 579 14.89 597 15.51 615 16.05 639 17.02 663 17.93 691 19.08

23000 548 14.96 583 16.24 597 16.73 615 17.39 631 17.97 651 18.71 674 19.66 698 20.68

24000 568 16.85 603 18.22 617 18.79 632 19.37 649 20.06 664 20.62 686 21.56 708 22.51

25000 588 18.89 622 20.38 638 21.01 651 21.52 666 22.26 682 22.93 697 23.51 719 24.63

26000 609 21.09 643 22.68 657 23.38 671 23.96 685 24.59 700 25.34 715 25.99 731 26.76


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


12000 791 2.54 877 3.49 918 3.99 957 4.50 996 5.03 1033 5.55 1070 6.09 1105 6.63

13000 843 3.07 923 4.09 961 4.62 999 5.16 1035 5.71 1071 6.26 1105 6.83 1140 7.41

14000 895 3.65 970 4.74 1007 5.31 1042 5.88 1077 6.46 1111 7.06 1144 7.66 1176 8.27

15000 949 4.32 1020 5.48 1054 6.08 1088 6.69 1121 7.30 1153 7.93 1185 8.55 1216 9.20

16000 1002 5.09 1069 6.31 1102 6.95 1134 7.58 1165 8.22 1197 8.88 1227 9.55 1257 10.21

17000 1056 5.92 1120 7.23 1152 7.88 1181 8.57 1212 9.25 1241 9.93 1270 10.64 1299 11.33

18000 1110 6.87 1171 8.24 1201 8.93 1230 9.64 1259 10.35 1288 11.08 1314 11.82 1342 12.56

19000 1166 7.93 1224 9.36 1252 10.10 1280 10.84 1307 11.58 1335 12.34 1362 13.10 1387 13.88

20000 1221 9.08 1276 10.58 1303 11.35 1330 12.13 1357 12.91 1382 13.71 1408 14.50 1434 15.30

21000 1276 10.34 1330 11.93 1355 12.73 1381 13.54 1406 14.36 1431 15.18 1455 16.01 1480 16.85

22000 1332 11.72 1383 13.39 1408 14.23 1432 15.07 1456 15.92 1481 16.77 1504 17.64 1527 18.52

23000 1387 13.22 1437 14.97 1461 15.85 1484 16.73 1508 17.61 1532 18.51 1554 19.40 1576 20.31

24000 1443 14.86 1491 16.69 1514 17.60 1537 18.51 1559 19.45 1582 20.37 1604 21.29 1626 22.23

25000 1499 16.63 1546 18.55 1569 19.49 1590 20.44 1611 21.39 1633 22.36 1655 23.32 1676 24.30

26000 1555 18.54 1601 20.55 1622 21.52 1644 22.50 1664 23.49 1684 24.50 1706 25.50 1726 26.50


0.50 1.00 1.25 1.50 1.75 2.00 2.25 2.50CFMStd.Air


18000 1110 6.87 1171 8.24 1201 8.93 1230 9.64 1259 10.35 1288 11.08 1314 11.82 1342 12.56

19000 1166 7.93 1224 9.36 1252 10.10 1280 10.84 1307 11.58 1335 12.34 1362 13.10 1387 13.88

20000 1221 9.08 1276 10.58 1303 11.35 1330 12.13 1357 12.91 1382 13.71 1408 14.50 1434 15.30

21000 1276 10.34 1330 11.93 1355 12.73 1381 13.54 1406 14.36 1431 15.18 1455 16.01 1480 16.85

22000 1332 11.72 1383 13.39 1408 14.23 1432 15.07 1456 15.92 1481 16.77 1504 17.64 1527 18.52

23000 1387 13.22 1437 14.97 1461 15.85 1484 16.73 1508 17.61 1532 18.51 1554 19.40 1576 20.31

24000 1443 14.86 1491 16.69 1514 17.60 1537 18.51 1559 19.45 1582 20.37 1604 21.29 1626 22.23

25000 1499 16.63 1546 18.55 1569 19.49 1590 20.44 1611 21.39 1633 22.36 1655 23.32 1676 24.30

26000 1555 18.54 1601 20.55 1622 21.52 1644 22.50 1664 23.49 1684 24.50 1706 25.50 1726 26.50

E 10 9/16" A B

B C D

DIMENSIONAL DATA: CURB MOUNTED AIR HANDLERS

AIR ENTERING AND SECTIONS

SECTION 1100%

OUTSIDE AIR SECTION

SECTIONS 2, 2F2, 2F4100% RETURNAIR SECTION

2 LESS FILTER RACK2F2 W/2” FILTER RACK2F4 W/4” FILTER RACK

SECTIONS 3, 3F2, 3F40% TO 100%

ECONOMIZER SECTION3 LESS FILTER RACK3F2 W/2” FILTER RACK3F4 W/4” FILTER RACK

SECTIONS 4, 4F2, 4F40% TO 30%

ECONOMIZER SECTION

4 LESS FILTER RACK4F2 W/2” FILTER RACK4F4 W/4” FILTER RACK

SECTION 5ECONOMIZER

EXHAUST SECTION

SECTION 6RETURN AIR

FAN SECTION

SIZE FAN TYPE A B C D E

8 Forward Curved 34 9/16 34 9/16 58 9/16 82 9/16 14 1/4

8 Airfoil 34 9/16 34 9/16 58 9/16 82 9/16 14 1/4

12 Forward Curved 34 9/16 34 9/16 58 9/16 82 9/16 23

12 Airfoil 34 9/16 34 9/16 58 9/16 82 9/16 23

18 Forward Curved 34 9/16 34 9/16 58 9/16 82 9/16 23

18 Airfoil 34 9/16 34 9/16 58 9/16 82 9/16 23

26 Forward Curved 34 9/16 34 9/16 58 9/16 90 23

26 Airfoil 34 9/16 34 9/16 58 9/16 90 23

33 Forward Curved 58 9/16 58 9/16 58 9/16 106 9/16 35 3/4

33 Airfoil 58 9/16 58 9/16 58 9/16 106 9/16 35 3/4

39 Forward Curved 58 9/16 58 9/16 58 9/16 106 9/16 35 3/4

39 Airfoil 58 9/16 58 9/16 58 9/16 106 9/16 35 3/4

48 Forward Curved 58 9/16 58 9/16 58 9/16 106 9/16 35 3/4

48 Airfoil 58 9/16 58 9/16 82 9/16 106 9/16 48

NOTE: Sections 2F, 3F, 4F, 5 and 6 followed by Section 9, 19 or 20 require an access section #13 be placed between sections.

24 24 F 24 E

G H 12 J20 (SEE NOTE 5)

24

SEE NOTE 7.

SEE NOTE 7.

K24 48


MIDDLE SECTIONSSECTION 10F2, 10F4

FLAT FILTER SECTION10F2 - 2” FILTER10F4 - 4” FILTER

SECTIONS 11ANGLE FILTER

SECTION

SECTIONS 12CARTRIDGE FILTER

SECTION

SECTIONS 13ACCESS SECTION

SECTIONS 13HHEPA FILTER

SECTION

SECTION 14, 14F2FACE & BYPASS SECTION14 - LESS FILTER RACK14F2 - W/2” FILTER RACK14F4 - W/4” FILTER RACK

SECTIONS 15HEATING COIL

SECTION

SECTIONS 16MSTANDARD COIL

SECTION LESS PIPECHASE

SECTIONS 16STANDARD COIL SECTION

SECTION 17ELECTRIC HEAT SECTION FOR

REMOTE CONTROLS

SECTIONS 18ELECTRIC HEAT SECTIONFOR BUILT-IN CONTROLS

SECTIONS 19SUPPLY AIR FAN SECTION

HORIZ. DISCH W/DIFFUSER SECTION

Size Fan Type E F G H J K

8 Forward Curved 24 24 24 24 48 82 1/2

8 Airfoil 24 24 24 24 48 82 1/2

12-18 Forward Curved 24 24 24 24 48 96 5/8

12-18 Airfoil 24 24 24 24 48 96 5/8

26 Forward Curved 24 24 24 24 48 96 5/8

26 Airfoil 24 24 24 24 48 96 5/8

33 Forward Curved 24 24 24 24 48 112 1/4

33 Airfoil 24 24 24 24 48 112 1/4

39 Forward Curved 48 24 24 48 96 112 1/4

39 Airfoil 48 24 24 48 96 112 1/4

48 Forward Curved 48 48 24 48 96 112 1/4

48 Airfoil 48 48 24 48 96 118 7/8

All dimensions are in inches.

Notes: 1.) Heating coil section #15 and coil section #16M willaccept up to 11 1/2” total coil casing depth.

2.) Standard coil section #16 will accept up to 19 1/2 totalcoil casing depth, including spacer (s).

3.) Section #13H (HEPA Filter) – For ease of filter removal,a section #13 (access section) is recommendedupstream of this section.

4.) Filter section is arranged as described on Page 16.

COIL CASING DEPTHROWS DEEP

1 2 3 4 5 6 8 103 1/4 3 1/4 5 3/8 6 3/4 8 1/8 9 1/2 12 1/4 15

5.) Two drain pipes on size 39 and 48. One 20” fromentering end and the second 66” from entering end.

6.) Section 16m is not available in sizes 39 & 48.7.) Section 15 and 16: Pipe chase: On size 08 thru 33 are

located 2” from the leaving end of section. On size 39and 48, Two pipe chases are furnished, One 4” fromleaving end of section and the second 26” fromleaving end of heating coil and 50” from leaving end ofstandard coil section.

L 10 9/16

2N QQ

M

P

UY

V

T

YS2

R


AIR LEAVING AND SECTIONS

SECTION 7DOWN DISCH PLENUM SECTION

SECTIONS 8HORIZ. DISCH. SECTION

SECTION 9SUPPLY AIR FAN SECTION DOWN DISCH

SECTIONS 20SUPPLY AIR FAN SECTION

HORIZ. DISCH. LESS DIFFUSER SECTION

Size Fan Type L M N R S T U V P Q Y

8 Forward Curved 34 9/16 24 30 62 1/2 62 1/2 16 16 14 8 17 24

8 Airfoil 34 9/16 24 30 62 1/2 62 1/2 20 20 5 3/16 8 17 22

12 Forward Curved 34 9/16 30 44 76 5/8 76 5/8 18 18 16 1/2 8 10 23

12 Airfoil 34 9/16 30 44 76 5/8 76 5/8 22 3/8 22 3/8 9 5/8 8 10 20 13/16

18 Forward Curved 34 9/16 30 44 76 5/8 76 5/8 25 1/8 25 1/8 15 5/8 8 15 24 7/16

18 Airfoil 34 9/16 30 44 76 5/8 76 5/8 28 1/8 28 1/8 11 1/8 8 15 22 15/16

26 Forward Curved 34 9/16 30 66 76 5/8 76 5/8 28 1/8 28 1/8 21 1/8 18 9 27 15/16

26 Airfoil 34 9/16 30 66 76 5/8 76 5/8 28 1/8 28 1/8 21 1/8 18 9 27 15/16

33 Forward Curved 34 9/16 46 66 92 1/4 92 1/4 31 1/2 31 1/2 36 7/8 18 9 26 1/4

33 Airfoil 34 9/16 46 66 92 1/4 92 1/4 31 1/2 31 1/2 36 7/8 18 9 26 1/4

39 Forward Curved 34 9/16 46 66 92 1/4 92 1/4 31 1/2 31 1/2 36 7/8 18 9 26 1/4

39 Airfoil 34 9/16 46 66 92 1/4 92 1/4 35 3/8 35 3/8 30 7/8 18 9 24 5/16

48 Forward Curved 34 9/16 46 66 92 1/4 92 1/4 31 1/2 31 1/2 44 7/8 28 9 26 1/4

48 Airfoil 58 9/16 46 66 98 7/8 98 7/8 39 5/8 39 5/8 32 1/2 28 9 22 5/16

All air handlers must have both an air entering and air leaving section.All dimensions are in inches.

F

J

J

W1

W2

E

G

A

8 9/16

L1 (SUM OF TOTAL

LENGTHS OF SECTIONSSUPPLIED)

B

C

C

H

L2 = L1 + 3"

618

D

SUPPLY AIROPENING

RETURN AIROPENING

PIPECHASE**

PIPE CHASE: ON SIZE 08 THRU 33 ARE LOCATED 2" FROM THE THE LEAVING END OF SECTION. ON SIZE 39 AND 48, TWO PIPE CHASES ARE FURNISHED, ONE 4" FROM LEAVING END OF SECTION AND THE SECOND 26" FROM LEAVING END OF HEATING COIL AND 50" FROM LEAVING END OF STANDARD COIL SECTION.

**

20"DOOR OPENING

1"

L

K

1"


DUCT OPENING LOCATIONS

Size Fan Type A B C D E F G H J W 1 W 2

Sec 7 Sec 9 Sec 7 Sec 9 Sec 7 Sec 9 Sec 7 Sec 9

8 Forward Curved 12 42 11 23 12 16 42 16 8 9/16 15 48 3/4 11 24 67 648 Airfoil 12 42 11 23 12 20 42 20 8 9/16 15 48 3/4 11 22 67 6412 Forward Curved 18 42 11 23 24 18 42 18 8 9/16 16 1/4 56 1/2 11 23 67 6412 Airfoil 18 42 11 23 24 22 3/8 42 22 3/8 8 9/16 16 1/4 56 1/2 11 20 13/16 67 6418 Forward Curved 24 42 16 28 24 25 1/8 42 25 1/8 8 9/16 18 1/2 66 16 24 7/16 77 7418 Airfoil 24 42 16 28 24 28 1/8 42 28 1/8 8 9/16 18 1/2 66 16 22 15/16 77 7426 Forward Curved 24 66 9 33 24 28 1/8 66 28 1/8 8 9/16 18 1/2 76 9 27 15/16 87 8426 Airfoil 24 66 9 33 24 28 1/8 66 28 1/8 8 9/16 18 1/2 76 9 27 15/16 87 8433 Forward Curved 34 66 9 33 24 31 1/2 66 31 1/2 8 9/16 20 1/8 98 9 26 1/4 87 8433 Airfoil 34 66 9 33 24 31 1/2 66 31 1/2 8 9/16 20 1/8 98 9 26 1/4 87 8439 Forward Curved 42 66 9 33 24 31 1/2 66 31 1/2 8 9/16 20 1/8 98 9 26 1/4 87 8439 Airfoil 42 66 9 33 24 35 3/8 66 35 3/8 8 9/16 21 7/8 98 9 24 5/16 87 8448 Forward Curved 42 66 9 33 24 31 1/2 66 31 1/2 8 9/16 20 1/8 98 9 26 1/4 87 8448 Airfoil 42 66 9 33 44 39 5/8 72 39 5/8 8 9/16 23 3/8 98 9 22 5/16 87 84

ACCESS SECTION #13

SIZE K L

8 37 3/4 62

12 45 1/2 62

18 55 72

26 65 82

33 87 82

39 87 82

48 87 82

Note: Dimensions for 1” panel unit, reduce 1” and 2” respectively at K and L for 2” double wall.

2"

14"

6"

11"

8"

4 1/2"

ROOF INSULATION

INSULATION(BY OTHERS)

ROOF FLASHING(BY OTHERS)

BASE RAIL FORPIER MTG

CROSS SECTION: TYPICAL(SHOWING CURB AND UNIT BASE RAIL)

CROSS SECTION: TYPICAL

12 GA. GALV.STL. CURB

SEALING GASKET

WOOD NAILINGSTRIP

14"

6"

6"

2"

2"

WIDTH = W2* - 11

L(LENGTH OF UNIT)

MINUS 11"

2"

2"

* SEE PREVIOUS PAGE


RT ROOF CURB (REFERENCE PURPOSE ONLY)

ROOF CURBSThe shape of the Dunham-Bush base rail permits adaptation to custom curbs by others.

ELECTRICAL DATA

WEIGHTS

Total Weight Calculations:STEP 1 Determine section identification numbers

from Table 6STEP 2 Determine “Length Units” per section from

Table 7 and add the total number of“Length Units” per air handler based onunit size and sections used.

STEP 3 Tabulate and add weights. Total airhandler weight is composed of thefollowing individual weights.1. Components (Minimum two sections --

Table 9)2. Coil(s) (if required -- Tables 10)3. Motor and Drive (Tables 11 & 12)4. Enclosure (Table 8)

Example:Find weight of Model RT 18 LA with 100%economizer section; angle filter section; standardcoil section; Type 5, Large, 6 Row, “A” fin serieswater cooling coil; down discharge fan section; 71/2 HP motor with 120% adjustable drive.

Description Step 1Sect. No.

Step 2Lgth. Units

Step 3Wt.

100% Economizer Section (3) 3 319

Angle Filter Section (11) 2 151Standard Coil Section (16) 4 240

Type 5 -- Lrg -- 6A Cooling Coil -- 463

Down Discharge Fan Section (9) 7 6657 ½ HP Motor -- 167

120% Adj. Drive -- 45

Enclosure (Total) 16 757Total 2807

Section Identification NumbersTABLE NO. 6

Section No. Description Section No. Description

1 100% Outside Air Section 11 Angle Filter Section2 100% Return Air Section 12 Bag Filter Section

2F Section No. 2 With Flat Filter Rack 13 Access Section3 0-100% Mix Box Section 13H HEPA Filter

3F Section No. 3 With Flat Filter Rack 14 Face and Bypass Section4 30% Mix Box Section 14F Section No. 14 With Flat Filter Rack

4F Section No. 4 With Flat Filter Rack 15 Heating Coil Section5 Economizer Exhaust Section 16M Modified Coil Section6 Return Air Fan Section 16 Standard Coil Section7 Down Discharge Section 17 Elec. Coil Sect. w/Remote Cont. Panel8 Horizontal Discharge Section 18 Elec. Coil Sect. w/Built-in Con. Panel9 Down Discharge Fan Section 19 Horiz. Fan Section w/Diffuser Section

10 Flat Filter Section 20 Horizontal Fan Section

Number of “Unit Lengths” Per SectionTABLE NO. 7

Entering Middle Lvg.Section Number

RTModelNo. 1 2 3F 4F 5 6 10F 11 12 13 13H 14 15 16 16M 17 18 19 7 8 9 208 MF 1 3 3 3 3 7 2 NA 2 2 2 2 2 4 2 2 4 7 3 1 5 512 MF 1 3 3 3 3 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 718 MF 1 3 3 3 3 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 726 MF 1 3 3 3 5 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 733 MF 1 5 5 5 5 9 2 2 2 2 2 2 2 4 2 2 4 10 3 1 8 839 MF 1 5 5 5 5 9 2 2 2 2 4 2 2 8 - 2 4 10 3 1 8 848 MF 1 5 5 5 5 9 2 2 4 2 4 2 2 8 - 2 4 10 3 1 8 88 MA 1 3 3 3 3 7 2 2 2 2 2 2 2 4 2 2 4 7 3 1 5 5

12 MA 1 3 3 3 3 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 718 MA 1 3 3 3 3 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 726 MA 1 3 3 3 5 7 2 2 2 2 2 2 2 4 2 2 4 9 3 1 7 733 MA 1 5 5 5 5 9 2 2 2 2 2 2 2 4 2 2 4 10 3 1 8 839 MA 1 5 5 5 5 9 2 2 2 2 4 2 2 8 - 2 4 10 3 1 8 848 MA 1 5 7 7 7 9 2 2 4 2 4 2 2 8 - 2 4 10 5 1 9 9

ENCLOSURE WEIGHT IN POUNDS 1” SINGLE WALL CONSTRUCTIONTABLE NO. 8

AIR HANDLER TOTAL LENGTH UNITSMODELNO. 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

RT 08 432 485 548 612 674 739 829 866 934 998 1061 1125 1196 1252 1316 1381RT 12 540 607 685 766 843 924 1037 1083 1168 1248 1327 1407 1495 1566 1646 1726RT 18 600 660 757 846 930 1020 1128 1194 1278 1375 1461 1550 1650 1719 1811 1898RT 26 651 736 830 926 1018 1116 1220 1306 1389 1502 1596 1693 1805 1872 1977 2071RT 33 730 820 920 1030 1130 1240 1350 1450 1560 1660 1770 1870 2000 2090 2190 2290RT 39 730 820 920 1030 1130 1240 1350 1450 1560 1660 1770 1870 2000 2090 2190 2290RT 48 730 820 920 1030 1130 1240 1350 1450 1560 1660 1770 1870 2000 2090 2190 2290

ADD 15% FOR 2” DOUBLE-WALL

WEIGHTS

COMPONENT WEIGHT IN POUNDSTABLE NO. 9

UNIT MODEL NUMBERSECTIONNO.

DECRIPTION

RT 08 RT 12 RT 18 RT 26 RT 33 RT 39 RT 48

1 100% Outside Air Section 121 187 195 262 371 384 410

2 100% Return Air Section 117 124 121 154 290 290 3102F 100% Return Air Section W/Flat Filter Section 163 167 164 221 357 350 380

3 100% Economizer 206 303 319 417 653 678 730

3F 100% Economizer W/ Flat Filter Section 274 346 362 484 720 745 8004 30% Economizer 203 295 302 403 608 640 700

4F 30% Economizer W/ Flat Filter Section 271 338 345 470 675 707 7405 Economizer Exhaust Section 298 444 444 654 913 913 1000

6 Return Air Fan Section LFReturn Air Fan Section LA

820870

10261088

11651164

13791607

19202109

19402228

21402420

7 Down Discharge - No FanDown Discharge & Discharge Damper

117136

122183

122183

154244

206296

206296

330440

8 Horizontal Discharge Section 32 46 46 60 78 78 85

9 Down Discharge LFDown Discharge LA

401550

531592

661665

7641038

11571336

11571540

12602140

10F Flat Filter Section 103 113 113 147 167 167 180

11 Angle Filter Section - 151 151 185 237 237 250

12 24” Bag Filter Section 110 124 124 148 199 199 40013H HEPA Filter Section 110 124 124 148 199 400 400

13 Access Section 61 70 70 80 100 100 110

14 Face & Bypass Section 166 217 249 312 352 429 46014F Face & Bypass W/Flat Filter Section 217 260 292 379 419 496 530

15 Heating Coil Section 24” 97 105 105 119 138 280 300

16 Standard Coil Section 48” 232 240 240 286 325 650 70017 Electric Heat Coil Section 24” 95 105 105 119 138 138 150

18 Electric Heat Coil Section 48” 190 210 210 238 276 276 30019 Horizontal Fan W/ Diffuser LF

Horizontal Fan W/ Diffuser LA575650

752814

891890

10851413

15271696

15271715

16602100

20 Horizontal Fan LF/MFHorizontal Fan LA/MA

455602

682662

820920

11431210

14961396

15151490

16601900

Vestibule (If Any) 58 58 58 58 87 87 95

NOTE: USE SAME WEIGHT FOR 2” FLAT FILTER RACKS (I.E. 2F = 2F2 OR 2F4 WEIGHT).

TYPE 5 WATER COILS*TABLE NO. 10

ROWS DEEPMODEL NO.

1 2 3 4 5 6 8 10

RT 08 73 108 150 185 230 270 350 360

RT 12 85 127 174 218 270 315 410 417

RT 18 118 184 254 320 397 463 606 749

RT 26 153 245 344 440 547 642 844 1045

RT 33 192 310 433 550 683 801 1050 1300

RT 39 218 363 514 658 819 962 1269 1575

RT 48 250 420 590 755 940 1110 1459 1815

ADD FOR OTHER FIN SERIES “B” 7%, “C” 14%, “D” 20%. FOR ALTERNATE AND SMALL SIZE COILS, MULTIPLY LARGE COIL WEIGHTS BY RATIOOF FACE AREA.

MOTOR WEIGHT TEFCTABLE NO. 11

HP 1 1 1/2 - 2 3 5 7 1/2 10 15 20 25 30 40 50 75

FRAME 143T 145T 182T 184T 213T 215T 254T 256T 284T 286T 324T 326T 365T

LBS. 55 59 90 114 167 189 288 332 429 475 664 724 928

TRIPICAL - ADJUSTABLE DRIVE WEIGHTSTABLE NO. 12

HP 1 1 1/2 - 2 3 5 7 1/2 10 15 20 25 30 40 50 75

LBS. 25 27 30 35 45 52 66 74 85 96 108 136 265

MECHANICAL SPECIFICATIONS

GENERALFrame members, structural bases and all casing partsare fabricated from mill galvanized steel. Exposedpanels are also primed with Electro-deposition paint(both sides).

AIR ENTERING END SECTI0NSWith outside air intakes have a weatherhood withmoisture eliminator and are furnished with a shut-offdamper.

ECONOMIZER SECTIONSFor fresh air supply from 30 to 100% CFM haveproportioning dampers. Proportioning dampers arefurnished with interconnection linkage and control arm(damper motor by other).

ECONOMIZER EXHAUST SECTIONIs furnished with both proportioning dampers and agravity relief damper.

RETURN AIR FAN SECTIONHas either a forward curved fan or an airfoil faninternally spring isolated and includes proportioningdampers and a gravity exhaust damper (dampermotor by others).

MIDDLE SECTIONS

FLAT FILTER SECTIONFor 2” and 4”, filters are available on Sizes 12 thru 39.One access door is furnished.

HIGH CAPACITYAngle filter sections are for 2” filters. One access dooris furnished.

BAG FILTER SECTIONSAre for filters up thru 20” depth. Bag filter sectionsplus an access section or a face and bypass section(down stream) are required for filters 21” thru 36”depth.Bag filter sections have doors on both sides of unit.

ACCESS SECTIONProvides space for temperature controls, humidifiersand for access to clean coils. One access door isfurnished.

FACE & BYPASS DAMPER SECTIONDampers are aluminum opposed airfoil blade type.Damper motors, by others, are mounted with thedamper section.

HEATING COIL SECTIONOne thru four rows of heating coils may be installed inthis section. One access door is furnished.

HEPA FILTER SECTIONFront loading filter rack for 99.97% D.O.P. efficiency.Solid metal liners and one access door are included.

STANDARD COIL SECTIONWill hold up to 19 1/2” total of coils and spacers. A coildrain pan is furnished in addition to the unit pan.Drains are to the roof surface and not down intobuilding below. One access door is furnished.

ELECTRICAL COIL SECTIONTwo electric coil sections are offered, one for remotecontrols and one for built-in controls. One access dooris furnished on section 17, and two access doors onsection 18.

HORIZONTAL FAN SECTION WITH DIFFUSERThis section can be used for draw-thru or blow-thruflow of air across coils and for blow-thru arrangementswith bag filters. Internal spring isolation is standard.This section has one access door.

AIR LEAVING SECTIONS

DOWN DISCHARGE OR HORIZONTALDISCHARGE PLENUMSFor use with the horizontal discharge supply fan.

DOWN DISCHARGE SUPPLY FANForward curved and airfoil fans are offered on allsizes. Internal spring isolation is standard on all fanassemblies. Pillow block ball bearings selected for200,000 hour average life are standard.

COILSDunham-Bush coil performance is certified ascomplying with ARI Standard 410.

INSULATIONUnits are insulated with 1” and 1 1/2 # densityfiberglass insulation as standard. Optional insulationmaterial is available. All sections are insulated.

RIGGINGLifting lugs are provided so that unit can be lifted intoplace by crane or helicopter.

PHYSICAL DATA

COILS, FILTERS, SHAFT DIAMETERSTABLE NO. 21

Description Unit Size

08 12 18 26 33 39 48

CFM – Range* 27004800

40007200

700010800

1000015600

1200019800

1700023400

1700028800

Large TF x FLFA (ft²)

18T x 448.8

24T x 4411.69

30T x 5417.92

36T x 6425.50(a)

46T x 6633.61(a)

54T x 6639.45(a)

66T x 6648.22(a)

Alt. 1 TF x FLFA (ft²)

16T x 447.8

22T x 4410.71

26T x 5415.54

34T x 6424.08

40T x 6629.22(a)

48T x 6635.07(a)

58T x 6642.37(a)


14T x 446.8

18T x 448.77

26T x 4412.66

30T x 6421.25

36T x 6626.30(a)

42T x 6630.68(a)

54T x 6639.45(a)Ty

pe 5

Wat

er &

DX

Small TF x FLFA (ft²)

14T x 345.3

16T x 447.79

24T x 4411.69

26T x 6418.42

30T x 6621.92

36T x 6626.30(a)

46T x 6633.61(a)

Large TF x FLFA (ft²)

17T x 448.3

23T x 4411.20

29T x 5417.33

34T x 6424.08(a)

44T x 6632.14(a)

52T x 6637.99(a)

64T x 6646.76(a)


15T x 447.3

21T x 4410.23

25T x 5414.94

33T x 6423.38

38T x 6627.76(a)

46T x 6633.61(a)

56T x 6640.91(a)


13T x 446.3

17T x 448.28

25T x 4412.17

29T x 6420.54

34T x 6624.84(a)

40T x 6629.22(a)

52T x 6637.99(a)

Co

ils

Type

5 S

team

NFS

Small TF x FLFA (ft²)

13T x 344.9

15T x 447.30

23T x 4411.20

25T x 6417.71

29T x6621.19

34T x 6624.84(a)

44T x 6632.14

Shaft Diameters Bearings (mm)

Section 6 FANMFMA

3535

4040

4040

4540

5045

5050

5050

Section 9, 19, 20 MFMA

3535

4040

5045

5045

5050

5055

5065

Filters

FlatFace Area Sq. Ft.

Qty. - Size10

(2)24x24(1)12x24

17(2)24x24(3)12X24

22.67(4)24X24(2)20X24

30(6)24X24(3)12X24

40(12)20X24

44.4(16)20X20

Not AvailableUse Angle Filter

AngleFace Area Sq. Ft.

Qty. - Size16.67

(2)20x2020

(4)24x24(2)12x24

34(6)24x24(3)20x24

53.3(16)24x20

66.6(20)24x20

66.6(20)24x20

80(24)20x24

BagFace Area Sq. Ft.

Qty. - Size10

(2)24x24(1)12x24

17(2)24x24(3)12X24

22.67(4)24X24(2)20X24

30(6)24X24(3)12X24

40(12)20X24

44.4(16)20X20

53.3(16)20x24(Staggered

Filter Banks)Filte

r Sec

tion

Typ

e

HEPAFace Area Sq. Ft.

Qty. - Size8

(2)24x2412

(2)24x24(2)24x12

20(4)24x24(2)12x24

30(3)12x24(6)24x24

36(9)24x24

42(3)12x24(9)24x24

(stagged filterbanks)

48(12)24x24

(stagged filterbanks)

Fresh Air Hood

Fresh Air HoodMoisture Elim.

Face Area Sq. Ft.Qty. - Size

(3)20x208.3

(6)16x2013.3

(2)16x20(4)16x25

15.5

(8)20x2022.2

(8)20x2527.7

(8)20x2527.7

(12)20x2033.3

(a) Two coils to give tube face shown.ALL piping is inside the cabinet. Piping vestibule required if there is more than one stage of coil in one coil section. Vestibule sections increase the cabinetwidth 15 ¼ inches at the coil section.*Represents entire range of blowers. Fan tables in this catalog are limited to air conditioning coil velocities.All dimensions are in inches.

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