Air Cooled Chiller - Multistack

AIRSTACK PACKAGED AIR COOLEDFeaturesAIRSTACK AIR COOLED MODULAR PACKAGED WATER CHILLERHighly Dependable• Multiple independent refrigeration circuits• Comprehensive computer monitoring of operations• Automatic diagnostic recording of fault conditions• Automatic rotation of lead compressors• Simple to operate• LCD Screen displays information in plain English• Simple keypad provides control of system operationsEasy To Install• Compact modules fit through standard doorways and into elevators• Modules interconnect easily and quickly to form chillers from 10 to 600 tons(depending on module)• All refrigeration systems are factory charged and run testedComputer Control System• Operates only the capacity required by the load• Operates at peak efficiency under any given loadDesign Flexibility• Wide selection of module combinations--Free Cooling modules--Tanks--Glycol shot feeders--Pumping package--Super-quiet modules--Heat-recovery modules (desuperheaters)• Install only the capacity required at the time• Wide selection of options--Expansion tanks--Air separator--Copper/copper coils--Baked phenolic coatings--Stainless-steel construction--Specialty coatings--Special valving--Controls interfaceSimple To Service• Isolate and service modules while remaining inoperation• Does not require proprietary training• Service can often be performed on a convenient nonemergencybasis• Most components are standard, off-the-shelf design3

AIRSTACK PACKAGED AIR COOLEDPerformance DataLeavingChilledWater°FASP - 10X Air Cooled Modular ChillerAmbient Air Temperature °F(A suitable antifreeze solution is required for operation below 40°F Ambient)65.0 75.0 85.0 95.0 105.0Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER40.0 11.7 10.0 13.96 11.1 11.0 12.12 10.4 12.0 10.41 9.7 13.2 8.84 9.0 14.6 7.4042.0 12.2 10.0 14.55 11.5 10.9 12.62 10.8 12.0 10.85 10.1 13.2 9.22 9.4 14.5 7.7344.0 12.6 10.0 15.16 12.0 10.9 13.15 11.3 12.0 11.31 10.5 13.1 9.62 9.8 14.5 8.0845.0 12.9 10.0 15.47 12.2 10.9 13.42 11.5 11.9 11.54 10.8 13.1 9.82 10.0 14.5 8.2546.0 13.1 10.0 15.79 12.4 10.9 13.69 11.7 11.9 11.77 11.0 13.1 10.03 10.2 14.5 8.4348.0 13.6 9.9 16.44 12.9 10.9 14.25 12.2 11.9 12.26 11.4 13.1 10.45 10.6 14.4 8.8050.0 14.1 9.9 17.12 13.4 10.8 14.83 12.6 11.9 12.76 11.8 13.1 10.88 11.0 14.4 9.17AHRI specification points are in bold.LeavingChilledWater°FASP - 15X Air Cooled Modular ChillerAmbient Air Temperature °F(A suitable antifreeze solution is required for operation below 40°F Ambient)65.0 75.0 85.0 95.0 105.0Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER40.0 16.1 13.1 14.67 15.2 14.5 12.55 14.2 16.1 10.63 13.2 17.9 8.87 12.1 20.0 7.2842.0 16.7 13.1 15.24 15.8 14.5 13.05 14.8 16.1 11.07 13.8 17.9 9.25 12.7 20.0 7.6044.0 17.4 13.2 15.83 16.4 14.5 13.56 15.4 16.1 11.51 14.3 17.8 9.64 13.2 19.9 7.9445.0 17.7 13.2 16.12 16.7 14.5 13.83 15.7 16.1 11.74 14.6 17.8 9.84 13.5 19.9 8.1146.0 18.0 13.2 16.42 17.1 14.5 14.09 16.0 16.1 11.97 14.9 17.8 10.04 13.7 19.9 8.2848.0 18.7 13.2 17.03 17.7 14.5 14.63 16.7 16.1 12.44 15.5 17.8 10.45 14.3 19.9 8.6350.0 19.5 13.2 17.65 18.4 14.6 15.17 17.3 16.1 12.92 16.1 17.8 10.87 14.9 19.9 8.99AHRI specification points are in bold.LeavingChilledWater°FASP - 20X Air Cooled Modular ChillerAmbient Air Temperature °F(A suitable antifreeze solution is required for operation below 40°F Ambient)65.0 75.0 85.0 95.0 105.0Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER40.0 21.5 17.6 14.65 20.3 19.1 12.78 19.0 21.0 10.86 17.5 23.3 9.02 16.0 26.1 7.3442.0 22.3 17.6 15.17 21.1 19.1 13.27 19.8 21.0 11.31 18.3 23.3 9.41 16.7 26.1 7.6844.0 23.1 17.7 15.70 21.9 19.1 13.77 20.6 21.0 11.76 19.1 23.3 9.82 17.4 26.0 8.0345.0 23.5 17.7 15.97 22.3 19.1 14.02 21.0 21.0 11.99 19.5 23.3 10.02 17.8 26.0 8.2146.0 24.0 17.7 16.24 22.8 19.1 14.28 21.4 21.0 12.22 19.9 23.3 10.23 18.2 26.0 8.3948.0 24.8 17.7 16.79 23.6 19.2 14.79 22.2 21.0 12.70 20.7 23.3 10.65 19.0 26.0 8.7650.0 25.7 17.7 17.35 24.5 19.2 15.32 23.1 21.0 13.18 21.5 23.3 11.08 19.8 26.0 9.13AHRI specification points are in bold.4

AIRSTACK PACKAGED AIR COOLEDPerformance DataLeavingChilledWater°FASP - 30X Air Cooled Modular ChillerAmbient Air Temperature °F(A suitable antifreeze solution is required for operation below 40°F Ambient)65.0 75.0 85.0 95.0 105.0Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER40.0 30.2 25.8 14.08 28.7 27.9 12.34 27.0 30.5 10.64 25.2 33.4 9.04 23.2 36.9 7.5642.0 31.4 25.9 15.56 29.8 28.0 12.78 28.1 30.5 11.04 26.2 33.5 9.39 24.2 36.9 7.8644.0 32.6 26.0 15.04 31.0 28.1 13.22 29.2 30.6 11.44 27.3 33.6 9.75 25.2 37.0 8.1745.0 33.2 26.1 15.28 31.6 28.2 13.45 29.8 30.7 11.65 27.8 33.6 9.93 25.7 37.0 8.3346.0 33.8 26.2 15.52 32.2 28.2 13.67 30.4 30.7 11.85 28.4 33.7 10.11 26.2 37.0 8.4948.0 35.1 26.3 16.00 33.4 28.4 14.12 31.5 30.8 12.26 29.5 33.7 10.48 27.3 37.1 8.8150.0 36.4 26.5 16.48 34.7 28.5 14.57 32.7 31.0 12.68 30.6 33.8 10.85 28.3 37.2 9.14AHRI specification points are in bold.LeavingChilledWater°FASP - 60X (61X) Air Cooled Modular ChillerAmbient Air Temperature °F(A suitable antifreeze solution is required for operation below 40°F Ambient)65.0 75.0 85.0 95.0 105.0Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER40.0 63.7 53.3 14.34 60.4 58.0 12.48 56.8 63.6 12.72 53.0 69.9 9.09 49.0 77.2 7.6142.0 66.3 53.5 14.85 62.8 58.2 12.94 59.1 63.7 11.12 55.2 70.1 9.44 51.0 77.3 7.9144.0 68.9 53.8 15.36 65.3 58.5 13.40 61.5 63.9 11.53 57.4 70.3 9.80 53.1 77.5 8.2245.0 70.2 53.9 15.62 66.6 58.6 13.63 62.7 64.0 11.74 58.6 70.4 9.98 54.2 77.6 8.3846.0 71.6 54.1 15.88 67.8 58.7 13.87 63.9 64.1 11.95 59.7 70.5 10.16 55.3 77.7 8.5348.0 74.3 54.4 16.40 70.5 59.0 14.34 66.4 64.4 12.37 62.0 70.7 10.53 57.5 77.9 8.8550.0 77.2 54.7 16.93 73.2 59.2 14.82 68.9 64.6 12.80 64.4 70.9 10.91 59.7 78.1 9.17AHRI specification points are in bold.IPLV Performance Chart25% 50% 75% 100% IPLVASP-10 .676 .775 .973 1.247 .851ASP-15 .642 .744 .949 1.244 .823ASP-20 .680 .751 .931 1.222 .823ASP-30 .702 .785 .965 1.230 .855ASP-60 .679 .768 .955 1.224 .840Based on AHRI standard percentage ratio point.NOTES:1. Capacity is based on pure water. For performance using Glycol Solution, see AdjustmentFactor on Page 9.2. All full-load performance data is based on a 10°F chilled-water temperature dropthrough the evaporator.3. Fan and controls kW are included in tabular kW data.4. For total chiller performance, multiply above output (Tons) and input (kW) by thenumber of modules.5. Leaving water temps below 40° requires freeze protection.6. Based on 0.0001 fouling water for the evaporator.7. Following ARI 550/590 Standard 29.92 inches mercury barometric pressure isused for the data basis.5

Ambient°FAIRSTACK PACKAGED AIR COOLEDPerformance DataFCP1, Free Cooling Module, Single Module Performance DataFor use with ASP-10,-15 Capacity in Refrigeration TonsLEAVING WATER TEMPERATURE/GPM45 50 5530 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm30° F 15.5 14.0 13.3 21.2 18.7 17.8 27.0 23.5 22.335°F 10.2 9.3 8.9 15.8 14.1 13.3 21.5 18.8 17.840° F 5.1 4.7 4.5 10.4 9.4 8.9 16.0 14.1 13.4Ambient°FFCP2, Free Cooling Module, Single Module Performance DataFor use with ASP-20 Capacity in Refrigeration TonsLEAVING WATER TEMPERATURE/GPM45 50 5530 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm30° F 28.9 27.0 25.6 41.0 36.2 34.2 53.8 45.8 42.935°F 18.9 18.0 17.1 30.1 27.3 25.7 42.8 36.5 34.440° F 9.3 9.0 8.5 19.9 18.1 17.1 31.3 27.4 25.7Ambient°FFCP3, Free Cooling Module, Single Module Performance DataFor use with ASP-30 , -60, -61 Capacity in Refrigeration TonsLEAVING WATER TEMPERATURE/GPM45 50 5530 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm30° F 60.4 42.9 37.8 82.2 57.5 50.8 104.3 72.3 63.635°F 40.0 28.6 25.3 61.1 43.1 37.9 82.8 57.7 50.940° F 19.3 14.4 12.7 40.1 28.8 25.4 61.7 43.2 38.2Notes: 1. Capacity is based on pure water. For performance using Glycol solution, see Adjustment Factor on Page 9.2. A suitable antifreeze solution is required for operation below 40°F AmbientAmbient°FFCP4, Free Cooling Module, Single Module Performance DataFor use with ASP-30 , -60, -61 Capacity in Refrigeration TonsLEAVING WATER TEMPERATURE/GPM45 50 5530 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm 30 gpm 60 gpm 90 gpm30° F 60.4 42.9 37.8 82.2 57.5 50.8 104.3 72.3 63.635°F 40.0 28.6 25.3 61.1 43.1 37.9 82.8 57.7 50.940° F 19.3 14.4 12.7 40.1 28.8 25.4 61.7 43.2 38.2Notes: 1. Capacity is based on pure water. For performance using Glycol solution, see Adjustment Factor on Page 9.2. A suitable antifreeze solution is required for operation below 40°F Ambient6General Data Table of Air Cooled Standard –Free Cool ModulesFCP1 FCP2 FCP3 FCP4Condenser FansMotor Type Totally Enclosed Totally Enclosed Totally Enclosed Totally EnclosedHP 1 2 2 2Quantity 2 2 2 2Fan Type Axial Axial Axial AxialFan Material Comp Comp Comp CompAir Flow (cfm) (per module) 8,500 16,000 22,000FCP1 FCP2 FCP3 FCP4Condenser Coils*Fin Material Aluminum Aluminum Aluminum AluminumTube Material Copper Copper Copper CopperTube Diameter (in.) 1/2 1/2 1/2 1/2Number of Rows 6 6 6 6Coil Dimensions (Quantity) 30 x 49 (2) 30 x 611/2 (2) 42 x 731/2 (2)Free Cooling Coil Water Volume (gallons) 10.8 15.2 30.8Module Dry Weight (lb.) 1150 1550 1850*On Free Cool Modules, coils are utilized as water precoolers rather than for refrigerant condensing.

AIRSTACK PACKAGED AIR COOLEDGeneral DataGeneral Data Table of Air Cooled Standard –X ModulesCompressor ASP-10X ASP-15X ASP-20X ASP-30X ASP-60X ASP-61XType SCROLL SCROLL SCROLL SCROLL SCROLL SCROLLNominal Capacity (per compressor) 5 7.5 10 15 30 30Quantity 2-TANDEM 2-TANDEM 2-TANDEM 2-TANDEM 2-TANDEM 2-TANDEMEvaporator ASP-10X ASP-15X ASP-20X ASP-30X ASP-60X ASP-61XType BRAZED PLATE BRAZED PLATE BRAZED PLATE BRAZED PLATE BRAZED PLATE BRAZED PLATEWeight 54.4 63.8 83.7 100 214.4 214.4Evap Water Storage (gallons each) 1.08 1.4 2.03 2.54 5.86 5.86Quantity 1 1 1 1 1 1Header Storage (gallons per header) 3.2 3.2 6.24 10.5 18.2 18.2Refrigerant Type 410a 410a 410a 410a 410a 410aNumber of Circuits 1 1 1 1 1 1Condenser Fans ASP-10X ASP-15X ASP-20X ASP-30X ASP-60X ASP-61XMotor Type Totally Enclosed Totally Enclosed Totally Enclosed Totally Enclosed Totally Enclosed Totally EnclosedHP 1 1 2 2 2 15Quantity 2 2 2 2 4 1Fan Type Axial Axial Axial Axial Axial AxialFan Material Composite Composite Composite Composite Composite CompositeAir Flow (cfm) (per module) 6,600 8,500 16,000 22,000 44,000 44,000Condenser Coils* ASP-10X ASP-15X ASP-20X ASP-30X ASP-60X ASP-61XFin Material Aluminum Aluminum Aluminum Aluminum Aluminum AluminumTube Material Copper Copper Copper Copper Copper CopperTube Diameter (in.) 3/8 3/8 3/8 3/8 3/8 3/8Number of Rows 4 6 6 6 6 6Coil Dimensions (Quantity) 32 x 51 (2) 30 x 49 (2) 30 x 611/2 (2) 42 x 731/2 (2) 42 x 731/2 (4) 42 x 731/2 (4)Free Cooling Coil Water Volume (gallons) 3.5 3.5 4.6 4.6 7.2 7.2Module Dry Weight (lb.) 1370 1400 1700 2100 4,000 5,400Refrigerant Type R410a R410a R410a R410a R410a R410aCharge (lbs./circuit) 40 60 55Number of Circuits 1 1 1 1 1 1Operating Weight (with AL/CU coils) 1430 1470 1820 2290 4350 5750Shipping Weight (with AL/CU coils) 1370 1400 1700 2100 4000 5400Operating Weight (with CU/CU coils) 1650 1770 2300 2920 5610 7010Shipping Weight (with CU/CU coils) 1590 1700 2180 2730 5260 6660*On Free Cool Modules, coils are utilized as water precoolers rather than for refrigerant condensing.7

AIRSTACK PACKAGED AIR COOLEDAdjustment FactorsFigure 1. Performance Adjustment FactorFigure 3. Ethylene Glycol Adjustment FactorPressure DropPERFORMANCE ADJUSTMENT FACTORGPMKWCapacityFigure 2. Water Pressure DropA- ASP-10X D- ASP-30XB- ASP-15X E- ASP-60X (61X)C- ASP-20XA B C D EFigure 4. Propylene Glycol Adjustment FactorPressure DropGPMCapacityKW9

AIRSTACK PACKAGED AIR COOLEDSelection DataSELECTIONTo select an AIRSTACK Air Cooled chiller, the followinginformation is required.1. Load (in tons) of refrigeration.2. Chilled-water temperature drop.3. Leaving chilled-water temperature.4. Design ambient-air temperature.CAPACITY TABLESCapacity tables are based on a 10°F temperature dropthrough the evaporator. For other than a 10°F temperaturedrop, apply the respective performance adjustment factorsfrom Figure 1.EVAPORATOR WATER FLOW RATEEvaporator water flow is determined as follows:gpm = (24) (tons) / temperature dropWATERSIDE PRESSURE DROPEvaporator waterside pressure drops are provided inFigure 2. To use Figure 2, divide the total chilled-water gpmby the number of modules in the chiller.CHILLED-WATER SELECTION SAMPLE(Assumes ASP-15 Modules)1. System load = 55 tons. Chilled-water drop at 12°F.2. Leaving chilled-water temperature of 45°F. Design ambient-airtemperature of 95°F.3. Use the Figure 1 adjustment factor to convert tons at 12°F toequivalent tons at 10°F for use with capacity tables.Tons = 55/1.012 = 54.3 tons4. Select the appropriate performance table based on the module tobe used. Read the capacity and kW of a single module at the watertemperature specified (45°F) and design ambient-air temperature(95°F). capacity = 14.4 tons, kW = 15.8Divide the equivalent tons required at 10°F temperature drop by thesingle module capacity from the tables.Modules required = 54.3/14.4 = 3.8 modulesChiller capacity = 14.4 x 4 = 57.6 tonsPower input = 15.8 x 4 = 63.2 kW at 12°F temperature drop; applyingthe Figure 1 performance adjustment factor results in: tons = (57.6)(1.012) = 58.3 vs. system load of 55 tons.5. To determine the evaporator water flow and pressure drop, firstdetermine gpm.gpm = (24)(54.3)/12=108.6gpm/module = 108.6/4 = 27.2From Figure 2, read pressure drop from curve C pressure drop = 2.4 ft.of water.LOW-TEMPERATURE OPERATION WITH GLYCOL(Assumes ASP-15 Modules)Ethylene Glycol adjustment factors (Figure 3) should be used to adjustperformance depending on the percent of glycol use in the evaporatorcircuit. The factors in Figure 3 are based on a 10°F change in fluidtemperature through the evaporators. Capacity and kW should beobtained by extrapolating no more than 10°F from the lowest leavingchilled-water temperature shown in the capacity tables. Multistackshould be contacted if leaving Glycol temperatures below 32°F arerequired.Adjustment factors for Propylene Glycol are shown in Figure 4, and areused in the same way given in the following example.ETHYLENE GLYCOL SELECTIONEXAMPLE (Assumes ASP-15 Modules)Determine the capacity, gpm, pressure drop, and kW for anASP-15 module cooling 30% Ethylene Glycol from 45°F to35°F, with design ambient-air temperature of 95°F.1. By extrapolating from the performance tables: capacity: 11.5tons; 15.8 kW2. Evaporator water flow and pressure drop are determined forwater as in the previous example.gpm = (24) (11.5) = 27.6 gpm10From Figure 2, read the pressure drop from the curve C pressuredrop = 2.6 ft of waterTo convert performance for water to performance with EthyleneGlycol, read adjustment factors from Figure 3 at 30% Glycol.Capacity adjustment: 0.94kW adjustment: 0.99gpm adjustment: 1.10Pressure drop adjustment: 1.22Calculate performance with 30% Ethylene Glycol by multiplyingperformance for water by adjustment factors.Capacity: 11.5 x .94 = 10.8 tonskW: 15.8 x .99 = 15.6 kWgpm: 27.6 x 1.10 = 30.4 gpmPressure drop: 2.6 x 1.22 = 3.2 ft of waterIf a water-temperature drop greater or less than 10°F is required, beginby first multiplying the capacity using the performance adjustmentfactor from Figure 1.10

AIRSTACK PACKAGED AIR COOLEDDiagramsAll ASP-60X units come standard with four multi-blade vane axial condenser fans. The ASP-61X is a single fan unit available with a Low Sound (polyresinreinforced) Blade or Ultra Low Sound (fiberglass construction) Blade option. Testing has shown a sound reduction of 6dB with the Low Soundand an additional 4dB with the Ultra Low Sound design.INTAKENOTES:· NO OBSTRUCTIONS ALLOWED ABOVE CONDENSER FANS.· REQUIRED SERVICE CLEARANCE AT MODULE ENDS: 42”.· REQUIRED AIR INTAKE (FRONT) CLEARANCE: 42”· REQUIRED CLEARANCE FROM ANY HIGH VOLTAGE PANEL: 42”INTAKE12ASP-60X and ASP-61X Notes:1. No obstructions allowed above condenser fans.2. Required service clearance at module ends: 42”3. Required air intake (front) clearance: 42”4. Required clearance from any high voltage panel 42”5. Required clearance from any grounded wall: 42”Any non-grounded wall: 36”