PRODUC T CATALOGUE
RCC Evaporative Condensers
1 PRODUCT INTRODUCTION
2 BENEFITS
4 CONSTRUCTION DETAILS
6 CUSTOM FEATURES & OPTIONS
8 ACCESSORIES
9 SELECTION
12 ENGINEERING DATA
16 STRUCTURAL SUPPORT
18 ENGINEERING SPECIFICATIONS
contents
The RCC Evaporative Condenser is being offered to the
market, complementing and completing BAC’s already
impressive array of products. The breadth of its tonnage range,
48 – 775 ammonia tons, makes it an excellent choice for either
replacement opportunities or new construction/expansion
projects.
Superior Pultruded Composite
Low Energy Consumption
Low Height Installations
Easy Maintenance
Low Installation Costs
Ideal Replacement Unit
N O TA B L E F E AT U R E S I N C LU D E :
Bene!ts
› Low Energy Consumption RCC evaporative condensers minimize the energy consumption of
the entire system by providing the lowest condensing temperatures.
Owners save money while conserving natural resources and reducing
environmental impact.
RCC Evaporative Condensers provide the heat rejection required at the
lowest possible energy via:
High e#ciency, low horsepower axial fans
Premium e#cient/VFD duty motors (standard)
› Easy Maintenance EASY ACCESS — Removable louvres provide easy access to the unit
interior to adjust the $oat valve, clean the strainer, or $ush the basin.
Removable Coil Casing end panels !tted with removable knobs allow for
visual inspection and cleaning of the coil.
EASY BRANCH REMOVAL SYSTEM — Water distribution branch removal
system that requires no tools.
HYGIENIC COLD WATER BASIN — The cold water basin is sloped to
eliminate stagnant water and reduce biological growth. Additionally,
the suction strainer is easily removable to simplify maintenance.
FAN MOTORS — The fan motors for the RCC are vertically mounted
on an adjustable track. The base is easily moved to aid belt tensioning
and changing. Direct Drive motors are mounted above the unit and the
arrangement provides easy access to the motor.
Easy Branch Removal System
Easy Access - removable casing side panels
Fan motor outside air stream, easily accessible
2 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
› Low Installation Cost SELF-ALIGNING — The coil section self aligns with the basin section. This
feature signi!cantly reduces the time required to rig the RCC.
SUPPORT — All models mount directly on three parallel I-beams and
ship complete with motors and drives factory aligned.
MODULAR DESIGN — Models can also ship in multiple sections to
minimize the size and weight of the heaviest lift, allowing for the use of
smaller, less costly cranes.
EXTERNAL SERVICE PLATFORM, LADDER, SAFETY CAGE, AND GATE
(OPTIONAL) — For external service, an access door platform can be
added to the unit when purchased or as an aftermarket upgrade.
Ladders, safety cages, and safety gates are also available. All components
meet OSHA requirements.
› Long Service Life MATERIALS OF CONSTRUCTION — The RCC Evaporative Condenser
is made of Pultruded Composite Fibreglass to meet the corrosion
resistance and budgetary requirements of any project.
The use of high strength Pultruded Composite components for the
primary structure combined with BAC’s patented “Bonded Panel to
Post Connection” o0er many advantages over conventional hand laid
!breglass construction options.
› Reliable Year-Round Operation BEARINGS — Minimum L
10 bearing life of 100,000 hours delivers
years of trouble free service.
NOZZLES — The RCC uses large ori!ce non-clog nozzless to ensure the
coil is completely wetted, thereby delivering optimum heat transfer.
DRY OPERATION — Operating the unit with the spray water o0
eliminates winter operating concerns.
Total Lower Installation Cost
Strength Pultruded Composite
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 3
Construction Details
2
3
7
9
1
5
6
4
4
Sectional Air Inlet Louvre System
Corrosion resistant
Maintenance free
UV-resistant !nish
Easy to remove sections
Cold Water Basin Sloped for easy cleaning
Suction strainer with removable anti-vortex hood
accessible from the louvre face
Adjustable water make-up assembly
Quick !ll connection supplied as standard
Recirculating Spray Water Pump (NOT SHOWN)
Close coupled, bronze !tted centrifugal pump
Totally enclosed fan cooled (TEFC) motor
Bleed line with metering valve installed from pump
discharge to over$ow
Access Doors Easily removable casing end panels.
Easiily removable louvres around the perimeter of the
condenser.
High Strength Composite Construction
Pultruded Composite !brelass construction
High corrosion resistance
Fan Drive Power Train Premium quality belt
Heavy-duty bearings (L10
100,000 hour rating)
Premium e#cient/VFD duty motors are standard
Low HP Axial Fan(s) High e#ciency
Corrosion resistant aluminum fan hub with
polypropelyne blades.
Water Distribution System Tool-less removal of spray branches
Overlapping spray patterns ensure proper water
coverage
Large ori!ce, non-clog, spray nozzles
Coil Continuous serpentine, steel tubing
Hot-dip galvanized after fabrication (HDGAF); Type 304
or 316 Stainless Steel optional
Pneumatically tested at 26 bar
Sloped tubes for free drainage of $uid
61
2
3
4
7
8
9
5
5
› Construction Options
STANDARD CONSTRUCTION:
High strength pultruded composite components for the
primary structure combined with patented bonded panel to
post connection.
The mechanical support and other steel ancillary elements
will be made from type 304 stainless steel.
OPTIONAL ALL TYPE 316 STAINLESS STEEL
CONSTRUCTION:
The mechanical support and other steel ancillary elements
on the condenser can be constructed of Type 316 stainless
steel for added corrosion resistance .
COLD WATER BASIN:
The RCC Evaporative Condenser cold water basin is
constructed of !breglass reinforced polyester. The basin is
sloped to ensure that there is no stagnant water to reduce
the risk of bacterial growth.
Optional: Units can be supplied without cold water basin for
!eld assembly on a concrete tank. A unit supplied without
cold water basin excludes the basin, louvres, legs, strainer,
strainer and make-up assembly.
Features & OptionsC U S T O M
Serpentine Coilpentine CoilSerpen
› Coil Con!gurations
NOTE:
All BAC standard serpentine coils are designed to
be drainable.
STANDARD SERPENTINE COIL:
The standard cooling coil is constructed of continuous
lengths of all prime surface steel, hot-dip galvanized
after fabrication (HDGAF). The galvanizing is on the
outside surface. The coil is designed for low pressure
drop with sloping tubes for free drainage of $uid. Each
coil is pneumatically tested at 26 bar.
OPTIONAL STAINLESS STEEL COIL:
Coils are available in Type 304 stainless steel and 316
stainless steel for specialised applications. The coil is
designed for low pressure drop with sloping tubes for
free drainage of $uid. Each coil is pneumatically tested
at 26 bar.
6 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
› Redundant Pump OperationAll RCC models are available with optional secondary pump.
This pump can be switched easily and maintained while the
unit remains in operation.
› Extended Lubrication Lines (STANDARD)
Extended lubrication lines are standard for lubrication of the
fan shaft bearings on units with belt driven systems.
› Containerized For Export RCC 7’ x 7’ and 7’ x 10.5’ units are available for export.
Engineered for:
The worldwide export market
Maximum capacity
Designed to !t a single unit in a standard container
Easy maintenance
Reliability
Lowest shipping costs!
Units are factory assembled and require only minimal
assembly and rigging!
R C C C U S T O M F E AT U R E S A N D O P T I O N S C O N T I N U E D »
› Low Sound Operation (OPTIONAL)
For very sound sensitive installations, a low sound
fan option is available to reduce the sound levels
generated from the unit with minimal impact on thermal
performance.
Extended Lubrication Lines
as Standard
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 7
Accessories
› Pre-Assembled Platforms, Ladders & Safety GateModular external platforms with safety gates are pre-assembled at the
factory to ensure that every component will !t and function as described.
The platform will attach quickly in the !eld with minimal fasteners. Platforms
can be added at the time of order or as an aftermarket item.
› Basin HeatersEvaporative condensers exposed to below freezing ambient temperatures
require protection to prevent freezing of the water in the cold water basin
when the unit is idle. Factory-installed electric immersion heaters, which
maintain 4.4°C water temperature, are a simple and inexpensive way of
providing such protection.
› Electric Water Level Control PackageThe electric water level control replaces the standard mechanical make-
up valve when more precise water level control is required. This package
consists of a conductance-actuated level control mounted in the basin and a
solenoid activated valve in the make-up water line. The valve is slow closing
to minimize water hammer.
Pre-Assembled Platform Ladder, and Safety Gate
Basin Heater
› Vibration Cutout SwitchA factory mounted vibration cutout switch is available to e0ectively protect against equipment failure due to excessive vibration of
the mechanical equipment system. BAC can provide either a mechanical or solid-state electronic vibration cutout switch in a NEMA 4
enclosure to ensure reliable protection. Additional contacts can be provided on either switch type to activate an alarm.
› Basin Sweeper PipingBasin sweeper piping is an e0ective method of eliminating sediment that may collect in the cold water basin of the unit. A piping
system is provided for connection to side stream !ltration equipment (connection between sump and !lter done by others).
8 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
Selection
The method of unit selection are provided on the following pages. The heat rejection method is always recommended and the
manual selection is described below.
› Heat Rejection MethodIn a mechanical refrigeration system, the function of an evaporative condenser is to reject heat to the environment. The
heat to be rejected is the sum of the heat input at the evaporator and the energy input at the compressor. For a given
set of operating conditions, the energy input through the compression process can vary. Therefore, in order to accurately
determine the proper evaporative condenser required, it is necessary to establish the compressor energy input as well as
the heat absorbed in the evaporator.
› Selection ProcedureThe base heat rejection of the RCC Evaporative Condenser is shown in Table 1. Tables 2 and 3 present capacity factors to be
applied to the system heat rejection for various condensing temperatures, entering wet-bulbs, and refrigerants.
Establish total heat rejection required in kilowatts (kW):
Total heat rejection = compressor evaporator capacity (kW) + compressor BHP (kW).
Determine the refrigerant and design conditions for condensing temperature and entering wet-bulb temperature.
Using the appropriate table for the system refrigerant and model (Tables 2 or 3), determine the capacity factor for the
design condensing temperature and entering wet-bulb temperature.
Multiply the total heat rejection by the capacity factor determined in the previous step.
From Table 1, select the evaporative condenser whose base heat rejection equals or exceeds the corrected heat
rejection calculated in the previous step.
NOTE: Consult your local BAC Representative for evaporative condenser selections for systems utilising the following:
Hydrocarbon refrigerants such as propane, butane, or propylene
Centrifugal compressors
Rotary screw compressors with water cooled oil coolers
Ammonia evaporative condensers with desuperheaters
Halocarbon evaporative condensers with subcooling
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 9
TA B L E 1 : B A S E H E AT R E J E C T I O N
Model Number
Base Heat
Rejection
(kW) Model Number
Base Heat
Rejection
(kW) Model Number
Base Heat
Rejection
(kW)
RCC0505-0-F 169 RCC0808-2-K 804 RCC0710-3-L 1064
RCC0505-0-G 185 RCC0808-2-L 846 RCC0710-3-M 1094
RCC0505-1-F 224 RCC0808-3-K 886 RCC0812-2-L 1220
RCC0505-1-G 246 RCC0808-3-L 962 RCC0812-2-M 1296
RCC0505-2-F 268 RCC0909-2-K 973 RCC0812-3-L 1343
RCC0505-2-G 293 RCC0909-2-L 1083 RCC0812-3-M 1447
RCC0505-2-I 331 RCC0909-3-L 1175 RCC0812-3-N 1472
RCC0505-3-I 367 RCC0909-3-M 1231 RCC0913-2-M 1532
RCC0505-3-J 377 RCC1010-2-L 1264 RCC0913-2-N 1599
RCC0606-2-G 389 RCC1010-2-M 1351 RCC0913-3-M 1678
RCC0606-2-I 441 RCC1010-3-L 1392 RCC0913-3-N 1765
RCC0606-2-J 479 RCC1010-3-M 1499 RCC0913-3-O 1806
RCC0606-3-I 486 RCC1010-3-N 1534 RCC1015-2-N 1906
RCC0606-3-J 535 RCC1111-2-M 1581 RCC1015-2-O 1988
RCC0606-3-K 545 RCC1111-2-N 1642 RCC1015-3-N 2086
RCC0707-2-I 558 RCC1111-3-M 1741 RCC1015-3-O 2174
RCC0707-2-J 614 RCC1111-3-N 1831 RCC1015-3-P 2244
RCC0707-2-K 653 RCC1111-3-O 1865 RCC1116-2-O 2309
RCC0707-3-J 677 RCC0710-2-J 823 RCC1116-2-P 2418
RCC0707-3-K 729 RCC0710-2-K 887 RCC1116-3-O 2525
RCC0707-3-L 743 RCC0710-2-L 969 RCC1116-3-P 2728
Condensing
Pressure (kPa)Condens-
ing Temp
(°C)
Entering Wet-Bulb Temperature (°C)
R717 18 19 20 21 22 23 24 25 26 27 28
1130.9 29 1.51 1.63 1.78 1.97 2.21 2.54 2.99 3.67
1165.4 30 1.38 1.48 1.61 1.76 1.95 2.2 2.55 3.04 3.82
1200.6 31 1.25 1.34 1.43 1.55 1.69 1.87 2.1 2.41 2.84 3.7
1236.7 32 1.16 1.23 1.31 1.41 1.53 1.67 1.86 2.09 2.42 3.03 3.63
1273.5 33 1.07 1.13 1.19 1.27 1.36 1.47 1.61 1.78 2 2.35 2.7
1311.2 34 1 1.05 1.1 1.17 1.25 1.34 1.45 1.59 1.76 2.03 2.3
1349.8 35 0.93 0.97 1.02 1.07 1.13 1.21 1.3 1.4 1.53 1.72 1.9
1389.2 36 0.87 0.91 0.95 1 1.05 1.11 1.19 1.28 1.38 1.53 1.68
1429.4 37 0.82 0.85 0.88 0.92 0.97 1.02 1.08 1.15 1.23 1.35 1.46
1479.6 38 0.77 0.8 0.83 0.86 0.9 0.95 1 1.06 1.13 1.22 1.32
1512.6 39 0.73 0.75 0.78 0.81 0.84 0.88 0.92 0.97 1.03 1.1 1.18
1555.6 40 0.69 0.71 0.73 0.76 0.79 0.82 0.86 0.9 0.95 1.02 1.08
1599.5 41 0.65 0.67 0.69 0.72 0.74 0.77 0.8 0.84 0.88 0.93 0.98
TA B L E 2 : H E AT R E J E C T I O N C A PA C I T Y FA C T O R S – R - 7 1 7 ( A M M O N I A )
10 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
› Selection Example
GIVEN:
R-717 refrigerant
Compressor evaporator capacity = 280 kW
Compressor kW = 58
Condensing temperature = 35°C
Entering wet-bulb temperature = 24°C
› Solution Determine the total heat rejection:
Compressor evaporator capacity = 280 kW
Compressor BHP input = 58 kW
Total heat rejection = 338 kW
From Table 2, the heat rejection capacity factor for R-717 at
35°C condensing temperature and 24°C entering
wet-bulb temperature is 1.3.
Multiply: 338 kW x 1.3 = 439.4 kW
From Table 1 select a unit with a base heat rejection equal to
or greater than 439.4 kW:
Model RCC0606-2-I
Contact your local BAC Representative for assistance with alternate refrigerant selections.
Condensing
Pressure (kPa)Condens-
ing Temp
(°C)
Entering Wet-Bulb Temperature (°C)
R-22 R-134a 18 19 20 21 22 23 24 25 26 27 28
1162.9 748.2 29 1.69 1.83 2 2.21 2.49 2.85 3.36 4.13
1193.9 770.2 30 1.55 1.67 1.81 1.98 2.2 2.48 2.86 3.42 4.3
1225.5 792.7 31 1.41 1.5 1.61 1.74 1.9 2.1 2.36 2.71 3.19 4.17
1257.7 815.7 32 1.31 1.38 1.48 1.59 1.72 1.88 2.09 2.36 2.72 3.4 4.09
1290.5 839.2 33 1.2 1.26 1.34 1.43 1.53 1.66 1.81 2 2.25 2.64 3.04
1323.9 863.2 34 1.12 1.18 1.24 1.32 1.4 1.51 1.63 1.79 1.99 2.29 2.59
1358.0 887.7 35 1.04 1.09 1.14 1.2 1.27 1.36 1.46 1.58 1.72 1.93 2.14
1392.7 912.7 36 0.98 1.02 1.07 1.12 1.18 1.25 1.34 1.43 1.56 1.72 1.89
1428.0 938.3 37 0.92 0.95 0.99 1.04 1.09 1.15 1.21 1.29 1.39 1.51 1.64
1464.0 964.3 38 0.87 0.9 0.93 0.97 1.02 1.07 1.13 1.19 1.27 1.38 1.48
1500.6 990.9 39 0.82 0.84 0.87 0.91 0.94 0.99 1.04 1.09 1.16 1.24 1.32
1528.0 1018.1 40 0.77 0.8 0.83 0.85 0.89 0.93 0.97 1.02 1.07 1.14 1.21
1575.9 1045.9 41 0.73 0.75 0.78 0.8 0.83 0.87 0.9 0.94 0.99 1.05 1.1
TA B L E 3 : H E AT R E J E C T I O N C A PA C I T Y FA C T O R S – R - 2 2 , R 1 3 4 A
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 11
Engineering Data
Face
RCC 8’ x 8’ to 11’ x 11’Units
Plan
RCC 8’ x 8’ to 11’ x 11’ Units
Face
RCC 5’ x 5’ to 7’ x 7’ Units
Plan
RCC 5’ x 5’ to 7’ x 7’ Units
R C C
1. Coil Inlet and Outlet Connections; 2. Make-up; 3. Quick-!ll; 4. Over$ow; 5. Drain; 6. Access Door; 7. Fan Motor; 8. Recirculation Spray Pump
12 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
Nom.
Box
Size
Model
Number
Approx.
R717
Operating
Charge
Fan
Motor
(kW)[2]
Air$ow
Rate
(m3/s)
Pump
Motor
(kW)
Spray
Flow Rate
(l/s)
Approximate Dimensions (mm) Approximate Weights (kg)
A B W L H
Heaviest
Section
Shipping
WeightOperating
Weight
@ Over$ow
Level
5’ X
5’
RCC0505-0-F 18 1.5 6.3 0.55 6.8
910
340
1675 1675
2600 690 1020 1900 2200
RCC0505-0-G 18 2.2 7.1 0.55 6.8 340 2600 690 1020 1900 2200
RCC0505-1-F 28 1.5 5.9 0.55 6.8 660 2900 880 1210 2100 2300
RCC0505-1-G 28 2.2 6.7 0.55 6.8 660 2900 880 1210 2100 2300
RCC0505-2-F 37 1.5 5.6 0.55 6.8 820 3010 1050 1380 2300 2600
RCC0505-2-G 37 2.2 6.4 0.55 6.8 820 3010 1050 1380 2300 2600
RCC0505-2-I 37 4.0 7.6 0.55 6.8 820 3010 1050 1380 2300 2600
RCC0505-3-I 46 4.0 7.3 0.55 6.8 1120 3315 1230 1560 2550 2800
RCC0505-3-J 46 5.5 8.3 0.55 6.8 1120 3315 1230 1560 2550 2800
6’ X
6’
RCC0606-2-G 54 2.2 8.2 1.1 9.8
970
820
1980 1980
3280 1550 1830 3150 3500
RCC0606-2-I 54 4.0 9.7 1.1 9.8 820 3280 1550 1830 3150 3500
RCC0606-2-J 54 5.5 11.1 1.1 9.8 820 3280 1550 1830 3150 3500
RCC0606-3-I 67 4.0 9.3 1.1 9.8 1120 3585 1800 2080 3500 3800
RCC0606-3-J 67 5.5 10.6 1.1 9.8 1120 3585 1800 2080 3500 3800
RCC0606-3-K 67 7.5 11.7 1.1 9.8 1120 3585 1800 2080 3500 3800
7’ X
7’
RCC0707-2-I 73 4.0 11.9 1.1 13.3
1025
820
2285 2285
3470 2050 2390 4100 4550
RCC0707-2-J 73 5.5 13.6 1.1 13.3 820 3470 2050 2390 4100 4550
RCC0707-2-K 73 7.5 15.1 1.1 13.3 820 3470 2050 2390 4100 4550
RCC0707-3-J 91 5.5 13.0 1.1 13.3 1120 3775 2390 2730 4600 5000
RCC0707-3-K 91 7.5 14.4 1.1 13.3 1120 3775 2390 2730 4600 5000
RCC0707-3-L 91 11.0 16.4 1.1 13.3 1120 3775 2390 2730 4600 5000
8’ X
8’
RCC0808-2-K 94 7.5 18.0 1.5 17.4
1075
820
2590 2590
3450 2790 3050 5250 5800
RCC0808-2-L 94 11.0 20.5 1.5 17.4 820 3450 2790 3050 5250 5800
RCC0808-3-K 118 7.5 17.2 1.5 17.4 1120 3755 3230 3500 5850 6400
RCC0808-3-L 118 11.0 19.6 1.5 17.4 1120 3755 3230 3500 5850 6400
9’ X
9’
RCC0909-2-K 121 7.5 21.1 1.5 22
1135
820
2895 2895
3580 3500 3810 6450 7200
RCC0909-2-L 121 11.0 23.9 1.5 22 820 3580 3500 3810 6450 7200
RCC0909-3-L 152 11.0 22.9 1.5 22 1120 3885 4060 4380 7200 8000
RCC0909-3-M 152 15.0 25.4 1.5 22 1120 3885 4060 4380 7200 8000
10
’ X 1
0’
RCC1010-2-L 152 11.0 27.5 2.2 27.1
1190
820
3200 3200
3820 4210 4580 7750 8650
RCC1010-2-M 152 15.0 30.5 2.2 27.1 820 3820 4210 4580 7750 8650
RCC1010-3-L 190 11.0 26.4 2.2 27.1 1120 4125 4910 5280 8700 9600
RCC1010-3-M 190 15.0 29.3 2.2 27.1 1120 4125 4910 5280 8700 9600
RCC1010-3-N 190 18.5 31.4 2.2 27.1 1120 4125 4910 5280 8700 9600
11
’ X 1
1’
RCC1111-2-M 185 15.0 34.7 3 32.8
1355
820
3500 3500
3985 5040 5450 9150 10250
RCC1111-2-N 185 18.5 37.2 3 32.8 820 3985 5040 5450 9150 10250
RCC1111-3-M 232 15.0 33.2 3 32.8 1120 4290 5880 6300 10300 11400
RCC1111-3-N 232 18.5 35.6 3 32.8 1120 4290 5880 6300 10300 11400
RCC1111-3-O 232 22.0 37.7 3 32.8 1120 4290 5880 6300 10300 11400
Do not use for construction. Refer to factory certified dimensions. This catalogue includes data current at
the time of publication, which should be reconfirmed at the time of purchase.
NOTES:
1. Dimensions showing location of refrigerant connections
are approximate and should not be used for prefabrication
of connecting piping.
2. Refrigerant inlet and outlet connections are beveled for
welding. Standard size for inlet and outlet connections is
100NB.
3. Maximum drain size is based on a bottom connection.
4. Standard make-up, drain, and over$ow connections are
MPT.
5. Unit height is indicative, for precise value please refer to
certi!ed drawing
6. Operating weight is for the unit with the water level at the
over$ow.
7. Dimensions, shipping and operating weights indicated
are for units without accessories. Consult your local BAC
representative for further information.
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 13
R C C E N G I N E E R I N G D ATA C O N T I N U E D »
Face
RCC 7’ x 10.5’ to 11’ x 16.5’ Units
Plan
RCC 7’ x 10.5 to 11’ x 16.5’ Units
1. Coil Inlet and Outlet Connections; 2. Make-up; 3. Quick-!ll; 4. Over$ow; 5. Drain; 6. Access Door; 7. Fan Motor; 8. Recirculation Spray Pump
14 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
NOTES:
1. Dimensions showing location of refrigerant connections
are approximate and should not be used for prefabrication
of connecting piping.
2. Refrigerant inlet and outlet connections are beveled for
welding. Standard size for inlet and outlet connections is
100NB.
3. Maximum drain size is based on a bottom connection.
4. Standard make-up, drain, and over$ow connections are
MPT.
5. Unit height is indicative, for precise value please refer to
certi!ed drawing
6. Operating weight is for the unit with the water level at the
over$ow.
7. Dimensions, shipping and operating weights indicated
are for units without accessories. Consult your local BAC
representative for further information.
Do not use for construction. Refer to factory certified dimensions. This catalogue includes data current at
the time of publication, which should be reconfirmed at the time of purchase.
Nom.
Box
Size
Model
Number]
Approx.
R717
Operating
Charge
Fan
Motor
(kW)[
Air$ow
Rate
(m3/s)
Pump
Motor
(kW)
Spray
Flow Rate
(l/s)
Approximate Dimensions (mm) Approximate Weights (kg)
A B W L H
Heaviest
Section
Shipping
WeightOperating
Weight
@ Over$ow
Level
7’ X
10
.5’
RCC0710-2-J 113 5.5 15.9 1.5 20.4
1310
820
2285 3270
4215 3070 3580 6150 6850
RCC0710-2-K 113 7.5 17.7 1.5 20.4 820 4215 3070 3580 6150 6850
RCC0710-2-L 113 11.0 20.1 1.5 20.4 820 4215 3070 3580 6150 6850
RCC0710-3-L 142 11.0 19.2 1.5 20.4 1120 4535 3580 4090 6850 7500
RCC0710-3-M 142 15.0 21.3 1.5 20.4 1120 4535 3580 4090 6850 7500
8’ X
12
’
RCC0812-2-L 146 11.0 24.0 2.2 26.5
1310
820
2590 3880
4145 4180 4560 7850 8700
RCC0812-2-M 146 15.0 26.6 2.2 26.5 820 4145 4180 4560 7850 8700
RCC0812-3-L 182 11.0 23.0 2.2 26.5 1120 4465 4850 5230 8750 9600
RCC0812-3-M 182 15.0 25.5 2.2 26.5 1120 4465 4850 5230 8750 9600
RCC0812-3-N 182 18.5 27.3 2.2 26.5 1120 4465 4850 5230 8750 9600
9’ X
13
.5’
RCC0913-2-M 187 15.0 31.1 3 33.5
1300
820
2895 4335
4205 5250 5710 9650 10800
RCC0913-2-N 187 18.5 33.4 3 33.5 820 4205 5250 5710 9650 10800
RCC0913-3-M 234 15.0 29.8 3 33.5 1120 4525 6090 6560 10800 12000
RCC0913-3-N 234 18.5 32.0 3 33.5 1120 4525 6090 6560 10800 12000
RCC0913-3-O 234 22.0 33.9 3 33.5 1120 4525 6090 6560 10800 12000
10
’ X 1
5’
RCC1015-2-N 233 18.5 38.5 4 41.3
1310
820
3200 4790
4400 6310 6870 11600 12950
RCC1015-2-O 233 22.0 40.5 4 41.3 820 4400 6310 6870 11600 12950
RCC1015-3-N 291 18.5 36.8 4 41.3 1120 4720 7360 7920 13000 14350
RCC1015-3-O 291 22.0 39.0 4 41.3 1120 4720 7360 7920 13000 14350
RCC1015-3-P 291 30.0 43.3 4 41.3 1120 4720 7360 7920 13000 14350
11
’ X 1
6.5
’ RCC1116-2-O 284 22.0 46.3 5.5 49.9
1510
820
3500 5245
4585 7560 8180 13700 15400
RCC1116-2-P 284 30.0 51.3 5.5 49.9 820 4585 7560 8180 13700 15400
RCC1116-3-O 355 22.0 44.3 5.5 49.9 1120 4905 8820 9450 15400 17100
RCC1116-3-P 355 30.0 49.1 5.5 49.9 1120 4905 8820 9450 15400 17100
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 15
Structural Support
The recommended support arrangement for the RCC Evaporative Condenser consists of parallel I-beams positioned as shown on the
drawing. Besides providing adequate support, the steel also serves to raise the unit above any solid foundation to assure access to
the bottom of the unit.
To support a RCC Evaporative Condenser on columns with an alternate steel support arrangement, consult your local BAC
Representative.
NOTES:
1. Spray recirculation pumps on RCC
units are supported separately to
the main unit. Refer to the support
drawing provided with your
submital package for the pump
weight and support details.
2. Contact your local BAC
Representative for multi-cell unit
steel support.
3. Support beams and anchor bolts
to be selected and installed by
others.
4. All support steel must be level at
the top.
5. Beam size should be calculated
in accordance with accepted
structural practice. The length of
the beam must be at least equal
to the length of the basin. Refer
to engineering data for basin
dimensions. Support data and
maximum allowed de$ection is
tabulated in the table to the right.
6. If vibration isolators are used, a
rail or channel must be provided
between the unit and the isolators
to provide continuous support.
Nominal-
Box Size A B C D
Max
Deflection
RC- 5’X5’ 1588 724
N/A
794 2
RC- 6’X6’ 1892 876 946 2
RC- 7’X7’ 2198 1029 1099 2
RC- 8’X8’ 2502 1181 1251 2
RC- 9’X9’ 2806 1333 1403 2
RC- 10’X10’ 3112 1486 1556 3
RC- 11’X11’ 3416 1638 1708 3
S I N G L E C E L L S TA N D A R D U N I T O N LY
Single Cell Standard Square Box Unit
R C C
All dimesions are in millimeters
Spray recirculation pump is
supported separately to the
unit. Please see NOTE #1.
16 P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R
Structural Support
For alternative RCC Evaporative Condenser supports such as concrete plinths or piers consult
the factory for a drawing of the recommended minimum support requirements and load
distributions.
Nominal
Box Size A B C D
Max
De$ection
RC- 7'X10.5' 2198 996 889 1099 3
RC- 8'X12' 2502 1147 1041 1251 3
RC- 9'X13.5' 2806 1302 1193 1403 3
RC- 10'X15' 3112 1454 1346 1556 3
RC- 11'X16.5' 3416 1608 1498 1708 3
S I N G L E C E L L S TA N D A R D U N I T O N LY
Single Cell Standard RectangularBox Unit
R C C
All dimesions are in millimeters
NOTES:
1. Spray recirculation pumps on RCC
units are supported separately to
the main unit. Refer to the support
drawing provided with your
submital package for the pump
weight and support details.
2. Contact your local BAC
Representative for multi-cell unit
steel support.
3. Support beams and anchor bolts
to be selected and installed by
others.
4. All support steel must be level at
the top.
5. Beam size should be calculated
in accordance with accepted
structural practice. The length of
the beam must be at least equal
to the length of the basin. Refer
to engineering data for basin
dimensions. Support data and
maximum allowed de$ection is
tabulated in the table to the right.
6. If vibration isolators are used, a
rail or channel must be provided
between the unit and the isolators
to provide continuous support.
Spray recirculation pump is
supported separately to the
unit. Please see NOTE #1.
P R O D U C T C A T A L O G U E : R C C E V A P O R A T I V E C O N D E N S E R 17
1.0 Evaporative Condenser
1.1 General: Furnish and install, _____ factory assembled evaporative
condenser(s) of counter$ow draw-through design, with four sided air
inlet, conforming in all aspects to the speci!cations and schedule as
shown on the plans.
1.2 Capacity: The evaporative condenser(s) shall be warranted by
the manufacturer to have condensing capacity of __________ kW
heat rejection, operating with _________ refrigerant and _______ºC
condensing temperature and ________ºC entering wet-bulb
temperature.
1.3 Corrosion Resistant Construction (standard): All panels and
structural members shall be constructed from Fibre Reinforced
Polyester (FRP) and unless otherwise stated the steel components shall
be made from Type 304 Stainless Steel.
1.4 Units shall have self-aligning pan and casing section for easy
rigging.
1.5 Warranty: The manufacturer’s standard equipment warranty
shall be for a period of one year from the date of startup or eighteen
months from the date of shipment, whichever ends !rst. The
manufacturer shall, in addition, provide a 5-year mechanical drive
warranty covering the fans, fan shafts, bearings, sheaves, supports,
and fan motors.
1.6 Factory Testing: Equipment manufacturer shall be capable of testing
the operation of the condenser in the manufacturer’s own test facility.
1.7 Quality Assurance: The manufacture shall have a Management
System certi!ed by an accredited registrar as complying with the
requirements of ISO-9001 to ensure consistent quality of products
and services. Manufacturers that are not ISO-9001 certi!ed shall
provide an additional one-year warranty to the customer at no
additional cost.
2.0 Parts
2.1 Coil Casing Assembly
2.1.1 Coil Casing Section: Evaporative condenser coil section shall
consisting of a refrigerant condensing coil, a spray water distribution
system, and drift eliminators as indicated by the manufacturer.
2.1.2 The refrigerant condensing coil shall be fabricated using lengths
of all prime surface steel at the manufacturer’s own facility, and hot-dip
galvanized after fabrication (HDGAF) (Type 304 and type 316 stainless
steel, optional). The refrigerant condensing coil shall be tested at 26
bar air pressure under water. The refrigerant condensing coil shall be
designed for low pressure drop with sloping tubes for free drainage of
liquid refrigerant.
2.2 Water Distribution System
2.2.1 Spray Water Distribution: Water shall be distributed evenly over
the coil to ensure complete wetting of the coil at all times. The water
distribution system shall have an operating pressure of 115 kPa at the
evaporative condenser spray water inlet connection.
2.2.2 Nozzles: Large-ori!ce plastic distribution nozzles spaced across
the coil face area, shall provide overlapping, umbrella spray patterns.
Nozzles shall have a minimum of 0.25” (6.35 mm) protrusion inside
the spray branches to ensure unimpeded water $ow between regular
cleanings of the water distribution system. Nozzles shall be removable
without any tools for cleaning.
2.2.3 Spray Branches: Spray branches shall be held in place by
snap-in rubber grommets, allowing quick removal of complete
branches for cleaning or $ushing. Spray branches shall be
removable without the use of any tools and constructed out of
Schedule 40 PVC.
2.2.4 Removable PVC drift eliminators shall be positioned to
prevent moisture from leaving the evaporative condenser and
incorporate a minimum of three (3) changes in air direction.
2.3 Basin Assembly
2.3.1 Cold Water Basin: The cold water basin shall be constructed
of Fibre Reinforced Polyester (FRP) panels. The basin shall have four
sided air inlet and easily removable PVC air inlet louvres. The basin
shall be sloped towards the pump inlet and shall include: a drain/
clean-out connection; a steel strainer; a corrosion resistant make-up
valve; over$ow connection; water quick-!ll connection; and a water
recirculation pump assembly.
a. Drain/cleanout connection shall be located in the cold water
basin to allow removal of recirculating water.
b. Lift-out steel strainer shall be supplied with perforated openings
sized smaller than the water distribution nozzle ori!ces and an
integral anti-vortexing hood to prevent air entrainment.
Engineering SpecsSee our website at www.BaltimoreAircoil.co.za for an electronic copy of product engineering speci!cations.
18
c. Corrosion resistant make-up valve shall be supplied with a large
diameter, plastic $oat arranged for easy adjustment.
d. Over$ow connection shall be provided in the cold water basin to
protect against recirculating water spillage.
2.3.2 Water Recirculation Pump: shall be a close-coupled, bronze-!tted
centrifugal pump equipped with a mechanical seal, mounted seperate
from the basin and piped from the suction strainer to the water
distribution system. The pump shall have a bronze impeller. The pump
shall be installed so that it may drain freely when the basin is drained.
The pump assembly shall include bleed line to control the bleed rate
from the pump discharge to the over$ow connection. The pump motor
shall be totally enclosed fan cooled (TEFC) type suitable for _____ V,
____ phase, ______ Hz electrical service.
3.0 Mechanical Equipment
3.1 Fan(s): Fans shall be heavy-duty, axial $ow type with rigid
polypropelene blades and an aluminium alloy hub driven by a multi-
groove neoprene/polyester belt designed for a minimum of 150% of
the motor nameplate horsepower.
3.2 Fan Motors: Fan motors and drives shall be located at the top of
the unit to facilitate access without requiring access to the inside of
the unit. Fan motor bases on belt drive units shall be adjustable for
belt tensioning by adjusting easily accesible nuts. Fan motor(s) shall be
totally enclosed type, premium e#ciency/VFD ready with a 1.15 service
factor, suitable for _____ V, ____ phase, ______ Hz electrical service.
3.3 Bearings: Fan shafts shall be mounted in heavy-duty, self
aligning, grease-packed relubricatable ball bearings with eccentric
locking collars, designed for a minimum L10
life of 95,000 hours
(1,000,000 hours average life). Bearing lubrication lines shall be
extended to the exterior of the unit.
3.4 Sheaves: Fan and motor sheaves shall be fabricated from cast iron.
3.5 Mechanical Equipment Warranty: The fan(s), fan shaft(s),
bearings, mechanical equipment support and fan motor shall be
warranted against defects in materials and workmanship for a period
of !ve (5) years from date of shipment.
4.0 Optional Equipment Speci!cations
4.1 Basin Sweeper Piping: The cold water basin of the unit shall be
equipped with PVC sump sweeper piping for a separator.
4.2 Basin Water Level Control: The evaporative condenser manufacturer
shall provide an electric water level control (EWLC) with an LED
troubleshooting system. The system shall consist of water level
sensing and control units in quantities and locations as indicated on
the drawings. Each water level sensing and control unit shall consist
of the following: NEMA 4 enclosure with gasketed access cover; solid
state controls including all necessary relays and contacts to achieve
the speci!ed sequence of operation; stainless steel water level sensing
electrodes with brass holder. Provide PVC union directly below the
control enclosure to facilitate the removal and access of electrodes and
control enclosure. (Optional) The number and position of water level
sensing electrodes shall be provided to sense the following: high water
level, low water level, high water alarm level, low water alarm level, and
heater safety cutout.
4.3 Basin Heaters: Evaporative condenser shall be provided with basin
heaters to prevent freezing of the water in the cold water basin when
the evaporative condenser is idle. The basin heaters shall be selected
to maintain +4.4° C basin water temperature at a _____ambient
temperature and 16.1 km/hr wind speed. Basin heaters shall be electric
immersion type controlled by a remote thermostat with the sensing
bulb located in the basin water. Basin heaters shall be provided with
a factory-installed low water level cutout switch to prevent heater
operation unless the heater elements are fully submerged.
4.4 Vibration Cutout Switch: Provide an electronic remote reset
vibration switch with contact for BAS monitoring. Wiring shall be by
the installing contractor. The electronic vibration cutout switch shall
be set to trip at a point so as not to cause damage to the unit.
4.5 External Access: Evaporative condenser shall be provided with a
factory assembled, !eld-installed external platform with an access
ladder and handrails complying with OSHA standards and regulations
to reach to the access door of the evaporative condenser. External
platform shall have a 610 mm wide non-skid walking surface and 1,220
mm high safety railings. Optional safety cage and safety gate shall be
available to meet OSHA requirements as necessary.
19
COOLING TOWERS
CLOSED CIRCUIT COOLING TOWERS
ICE THERMAL STORAGE
EVAPORATIVE CONDENSERS
HYBRID PRODUCTS
PARTS & SERVICES
BAC AFRICABaltimore Aircoil Company SA (Pty) Ltd, Portland Road, Phillipi, Cape Town
Telephone: +27 (21) 371 7121, Fax: +27 (21) 374 2081
© 2011 Baltimore Aircoil Company
w w w . B a l t i m o r e A i r c o i l . c o . z a
Bulletin: ZA_RCC-01