Form No: MES0446A

50Hz50Hz50Hz50Hz

Products That Perform...By People Who Care

R

Screw CompressorAir Cooled Flooded Chillers

90 to 636 Tons

AFHX Series

(High Ambient)

AFHX Series

(High Ambient)

TABLE OF CONTENT

DESCRIPTION PAGE NO

Nomenclature.................................................................................................................................... 2

Advantages of Flooded Chiller............................................................................................................ 3

Unit Features .................................................................................................................................... 5

Operating Benefits............................................................................................................................. 8

Typical Sequence of Operation........................................................................................................... 9

Physical Data...................................................................................................................................10

Performance Data ............................................................................................................................12

Dimensional Data.............................................................................................................................14

Typical Wiring Schematic..................................................................................................................19

Sound Data......................................................................................................................................24

NOMENCLATURE

A F HX 110 T - 5 S R

Air Cooled Chiller

Flooded Evaporator

Nominal TonsSingle Compressor = 90, 120, 140, 160,

180Two Compressors = 90T, 110T, 125T,

160T, 190, 220,250, 295, 315,340, 375, 435,490

Three Compressors = 545, 595, 635

Blank = R22R = R134a

5 = 50Hz6 = 60Hz

S = StandardQ = SpecialHorizontal Screw Compressor

T = Optional TwoCompressors

Blank = Standard

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ADVANTAGES OF FLOODED CHILLER

In a flooded cooler the refrigerant surroundsthe tubes in the shell and the water to becooled flows through the tubes. The level ofliquid refrigerant in the shell is maintained bythe combined action of an electronic levelcontroller and a mod-motor actuated ball valvewhich modulates the subcooled liquidrefrigerant into the cooler. This ensures that allthe cooler tubes are completely immersed inthe liquid refrigerant for better heat transferefficiency.For a Direct Expansion (DX) cooler therefrigerant is expanded into the tubes while thechilled water is circulated through the shell.Thermostatic expansion valve is used tothrottle the refrigerant in maintaining constantsuperheat of suction gas to the compressor.

The following are the advantages of usingflooded chiller:

1. Higher Capacity and Higher EERAchievable with the Same CompressorThe flooded cooler with all the copper tubesimmersed in the “boiling” liquid refrigerantenables a small approach temperaturebetween the “boiling” liquid refrigeranttemperature in the shell and the outletchilled water temperature in the cooler tubesto be achieved. This approach temperatureor temperature difference between theevaporating temperature of the boiling liquidrefrigerant and the chilled water outlettemperature, for a flooded cooler, is typicallyless than 3°F.

On the contrary, for a DX or DirectExpansion Cooler, the typical approachtemperature is between 8°F to 10°F. Thissimply means that the same compressor ina flooded cooler system will operate at ahigher saturated evaporating temperaturewhen compared to the same compressor ina DX-Cooler system, when outlet chilledwater temperatures in both cases are set atthe same temperature.Figure 1 shows the typical screwcompressor capacity performance curve at aparticular condensing temperature oversaturated evaporating temperature ofbetween 30°F to 50°F, and the typical power

input curve over the same conditions. It canbe noted that the same compressor whenoperating with a flooded cooler will generateapproximately 8% more cooling capacitywhile kw input increases negligibly by about1.8%. Therefore, the same compressorwhen coupled to a flooded cooler willtypically achieved higher cooling capacityperformance with correspondingly higherEnergy Efficiency Ratio (EER) i.e. (Btu/watt)or lower kw/Ton.

FIGURE 1

A DX cooler uses TXV throttling to maintainabout 10 to 15°F suction superheat toprevent liquid flood back to the compressor.In a flooded cooler, the refrigerant boils off inthe shell and gas can be sucked out fromthe top of cooler back to compressor. Thesuction superheat is usually about 2 to 3°F.Reduction in suction superheat will furtherincrease the capacity performance of thecompressor.

- 3 -

ADVANTAGES OF FLOODED CHILLER

DX coolers are typically designed withhigher tube velocities to ensure proper oilreturn to compressor both at full load and atreduced load. This will contribute to higherrefrigerant pressure drop through the cooler.On the contrary, there is very little shell sidepressure losses for a flooded cooler.Therefore, lower suction pressure drop inthe flooded design will impose less capacitypenalty on the compressor and this willfurther enable the compressor in a floodedcooler to generate more capacity than onewith a DX Cooler.

2. Better Part Load Performance

The Dunham-Bush Air Cooled FloodedChiller with its sophisticated microcomputercontrol and patented oil managementsystem has all cooler tubes completelyimmersed in the “boiling” liquid refrigerant toachieve superior heat transfer efficiencywhile ensuring adequate oil return to thecompressor(s). This ensures superior full-load efficiency and even better part-loadefficiency as the full heat transfer surfaceareas of the cooler tubes are utilized even atpart-load conditions. On the contrary, in theDirect Expansion Cooler, because of theneed to maintain adequate refrigerant gasvelocities in the cooler tubes for proper oilreturn, it is typical for certain bundle ofcooler tubes to be “blocked” or “baffled off”at part-load conditions. Thus not utilizing thefull heat transfer surface areas of the coolertubes and therefore have a lower efficiencywhen compared with a flooded cooler chillerat part-load conditions.

3. Excellent Capacity Modulation inResponse to Building Loads

Dunham-Bush utilizes its state-of-the-artNC25-4 microcomputer controller incombination with the electronic levelcontroller and mod-motor actuated ball valveto ensure instantaneous and precise feedingof liquid refrigerant to the flooded cooler inresponse to changes in building demand;

and maintains precise (±1/2°F) preset outletchilled water temperatures even at very lowload conditions; whereas most of Dunham-Bush’s competitors, in screw chillers, stillutilizes the conventional “centrifugal chiller”method of using orifice plates to modulaterefrigerant feed to the cooler; and as suchtheir machines do not function efficiently atlow-load conditions and can encounter oilreturn problem!

4. Cleanable Cooler

For a single pass cooler, the end plates atboth ends of the water boxes (2 pass only atreturn end) can be removed easily withoutdismantling the chilled water pipingconnections, for inspection and formechanical tubes cleaning with brushes orauto-brush. This will enable low tube foulingfactor in the cooler to be ensured, thusmaintaining system efficiency.

5. Lower Water Side Pressure Drop

In a DX cooler, the water flows transverselyover the outside of the tubes. The water flowis guided with vertical baffles. This will havea higher-pressure drop as compared withthe water flow in the tubes of a floodedcooler. In other words, the equivalentflooded chiller will require smaller waterpump to operate at lower powerconsumption.

6. Commonly Used In Large TonnageChillers Where Efficiency Is Critical

As a general rule, DX-cooler are typicallyused in small and medium tonnage chillerswhere efficiency is not important and the lowinitial cost is the main consideration!However, with increasing energy cost andthe drive to reduce global warming,flooded cooler chillers will increasinglybecome more popular not only in thelarge tonnage but also in the small andmedium tonnage chillers. Dunham-Bush,again, leads the industry in this respect!

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UNIT FEATURES

Microcomputer Control

Advanced Microcomputer control is a standardfeature for all Dunham-Bush rotary screw aircooled chillers monitoring analog and digitalinputs to achieve precise control of the majoroperational and protective functions of the unit.

Direct Digital Control (DDC) allows fingertipuser interaction. Its simple-to-use push buttonkeyboard and menu-driven software provideaccess to operating conditions, controlsetpoints and alarm history clearly displayed ona prominent multi-line 80 characteralphanumeric display.

An easy-to-install, inexpensive modem optionallows remote reading of operating parameterupdates. The Dunham-Bush microcomputerinsures its owner state-of-the-art efficiency andreliability.

Display Information

The 80 character alphanumeric liquid crystaldisplay utilizes easy to understand menu-drivensoftware. Inexperienced operators can quicklywork through these menus to obtain theinformation they require or to modify controlparameters. More experienced operators canbypass the menu systems, if desired, andmove directly to their requested controlfunction. At all times, assistance is available tothe operator by simply pressing the help key.Easily accessible measurements include:

] Leaving chilled water temperature.] Evaporator pressure.] Condenser pressure.

] System voltage.] Compressor amp draw of each

compressor.

] Compressor elapsed run time of eachcompressor.

] Compressor starts status.

] Oil level switch status.] Water temperature reset value.

] Water flow switch status.

] External start/ stop command status.

Optional entering chilled water temperature isavailable. With this option the operator canquickly and accurately read all significant watertemperatures and eliminate the need for often-inaccurate thermometers.

Capacity ControlLeaving chilled water temperature control isaccomplished by entering the watertemperature setpoint and placing themicrocomputer in automatic control. The unitwill monitor all control functions and move theslide valve to the required operating position.The compressor ramp (loading) cycle isprogrammable and may be set for specificbuilding requirements. Remote adjustment ofthe leaving chilled water setpoint is

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UNIT FEATURES

accomplished through either direct connectionof other DB control packages to themicrocomputer through either the RS485 longdistance differential communications port, viaterminal or modem connected to the RS232communication port, or from an externalBuilding Automation System supplying a simple0 to 5VDC signal. Remote reset of compressorcurrent limit may be accomplished in a similarfashion.

System ControlThe unit may be started or stopped manually,or through the use of an external signal from aBuilding Automation System. In addition, themicrocomputer may be programmed withseven-day operating cycle or other DB controlpackages may start and stop the systemthrough inter-connecting wiring.

System ProtectionThe following system protection controls willautomatically act to insure system reliability:] Low suction pressure] High discharge pressure] Freeze protection] Low differential pressure] Low oil level] Compressor run error] Power loss] Chilled water flow loss] Sensor error] Compressor over current] Anti-recycle

The microcomputer will retain the latest eightalarm conditions complete with time of failure inan alarm history. This tool will aid servicetechnicians in troubleshooting tasks enablingdowntime and nuisance trip-outs to beminimized.

Remote MonitoringThe microcomputer is complete with an RS232

communications port and all hardware orsoftware necessary for remote monitoring andcontrolled from a simple terminal and optionalphone modem. This sophisticated featuremakes servicing easier and more convenient tothe system. The microcomputer as standard isadditionally equipped with history files whichmay be used to take logs which may beretrieved via the phone modem periodically.Now owners of multiple buildings have a simpleand inexpensive method of investigatingpotential problems quickly and in a highly costeffective manner. Dunham-Bush has an openprotocol on its microcomputer to allow directinterface with Building Management Systems.

Refrigerating Cycle

The refrigerant management system, is verysimilar to centrifugal water chillers and isshown in the refrigerant cycle diagram below.

Liquid refrigerant enters the flooded evaporatoruniformly where it absorbs heat from waterflowing through the evaporator tubes. Thevaporized refrigerant is then drawn into thesuction port of the compressor where thecompression begins.

This partially compressed gas is then joined byadditional gas from the flash economizer as therotors rotate past the vapor injection port at anintermediate pressure. Compressed gaseousrefrigerant is then discharged into the integraloil separator where oil, which is contained inthe refrigerant vapor, is removed and returnedto the oil sump.

Fully compressed and superheated refrigerantis then discharged into the condenser, whereair is being drawn through the condenser tubeby the propeller fan cools and condenses therefrigerant. Liquid refrigerant then passesthrough the first expansion device and into theflash economizer where flash gas and liquidrefrigerant are separated.

The gaseous refrigerant is then drawn out ofthe flash economizer and into the vapor

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UNIT FEATURES

injection port of the compressor. The remainingliquid refrigerant then passes through a secondexpansion device which reduces refrigerantpressure to evaporator levels where it is thendistributed evenly into the evaporator.

By removing the flash gas from the flasheconomizer at an intermediate pressure, theenthalpy of the refrigerant flowing into theevaporator is reduced. This increases therefrigeration effect and improves the efficiencyof the refrigeration cycle.

Refrigerant flow into and out of the flasheconomizer is controlled by modulating valveswhich eliminate the energy wasting hot gasbypass effect inherent with fixed orifices.

Part-Load Performance

Through the use of flash economizermodulating flow control and multiplecompressors, Dunham-Bush air-cooled chillers

have best part-load performancecharacteristics in the industry when measuredin accordance with ARI Standard 550/590-98.

In most cases, actual building system loads aresignificantly less than full load designconditions, therefore chillers operate at partload most of the time.

Dunham-Bush air-cooled chillers combine theefficient operation of multiple compressors withan economizer cycle and microprocessorcontrol to yield the best total energy efficiencyand significant operating saving under anyload.

When specifying air conditioning equipment, itis important to consider the system loadcharacteristics for the building application. In atypical city, the air conditioning load will varyaccording to changes in the ambienttemperature. Weather data compiled overmany years will predict the number of hoursthat equipment will operate at various loadpercentages.

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OPERATING BENEFITS

Efficiency and Reliability

ENERGY EFFICIENCY

] Designed to provide the greatest amount ofcooling for the least kilowatt input over theentire operating range of your building.

] Delivers outstanding efficiency and totalenergy savings through the utilization ofeconomizer cycle and microcomputer-controlled staging producing greatercapacity with fewer compressors.

] Maximized performance through computer-matched components and multiplecompressors on a single refrigerant circuit.

] High efficiency oil recovery systemguarantees removal of oil carried over in therefrigerant and maintains the heatexchangers at their maximum efficiency atboth full and part load.

INSTALLATION EASE

] Dramatic payback in reduced maintenanceand overhaul costs both in down time and inlabor expenditures.

] Ease of troubleshooting throughmicroprocessor retention of monitoredfunctions.

] Factory run tested.

SAFETY CODE

] ASME Boiler and Pressure Vessel Code,Section VIII Division 1 "Unfired PressureVessels".

] JKKP Code.

] ASME Standard B31.5 Refrigeration Piping.

] ASHRAE Standard 15 Safety Code forMechanical Refrigeration.

] IEEE.

REFRIGERANT COMPATIBILITY

] Designed to operate with environmentallysafe and economically smart HCFC-22 withproven efficiency and reliability.

] Consult Factory for use of other HFCrefrigerants.

CONTROL FLEXIBILITY

] Microcomputer-based with DDC (directdigital control) features precise push buttoncontrol over every aspect of operation withbuilt-in standard features that allow extraenergy savings on start-up and throughoutthe life of your equipment.

] Insured uniform compressor loading andoptimal energy efficiency throughmicrocomputer controls which utilizepressure transducers to measure evaporatorand condenser pressure.

] Lower energy costs resulting from automaticload monitoring and increased accuracy andefficiency in compressor staging.

] Monitor your chiller's key functions from aremote location with a simple, low cost,phone modem option.

] Proactive control by microcomputer thatanticipates problems and takes correctiveaction before they occur. Controls willunload compressor(s) if head or suctionpressure approach limits. This will enableunit to stay on the line while warningoperator of potential problems.

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TYPICAL SEQUENCE OF OPERATION

The Dunham-Bush air-cooled water chillerdepends mainly on its on-board microcomputerfor control. Operation described is for a two-compressor units and is very similar for single,four-compressor units.

For initial start-up, the following conditions mustbe met:

] Power supply to unit energized.

] Unit circuit breakers in the "on" position.] Control power switch on for at least 15

minutes. Compressor switches on.] Reset pressed on microcomputer keypad.

] Chilled water pump running and chilledwater flow switch made.] Leaving chilled water temperature at least

2°F above setpoint.] All safety conditions satisfied.

After all above conditions are met, themicrocomputer will call for the lead compressorto start. The compressor 15-minute anti-recycletimer is initiated at compressor start.

The microcomputer monitors compressoramps, volts, leaving water temperature andsuction and discharge pressures. Thecompressor and cooling capacity is controlledby pulsed signals to load and unload solenoidvalves on the compressor. When thecompressor starts, it is fully unloaded, yieldingabout 25% of its full load capacity. As thecomputer gives it load signals, capacitygradually increases. The rate of compressorloading is governed by ramp control which isadjustable in the computer.

The computer responds to leaving chilled watertemperature and its rate of change which isproportional and derivative control. If leavingchilled water temperature is within thedeadband (+/-0.8°F from setpoint), no load orunload commands are given. If chilled watertemperature is above deadband, the computerwill continue loading the compressor until asatisfactory rate of decline is observed. Ifleaving chilled water temperature is below thedeadband, the compressor is commanded tounload. Thus the compressor capacity iscontinuously modulated to match applied load

and hold leaving chilled water temperature atsetpoint.

If the applied load is greater than onecompressor can handle, it will load fully andthen the microcomputer will call for a secondcompressor. After one minute, the secondcompressor will start in the same manner asthe first. Then both compressors will becommanded to adjust load to 50%. They aregradually loaded up together until the appliedload is satisfied. In this way the twocompressors share the load equally.

If the applied load decreases to the point thatboth compressors are running at about 40%capacity, the computer shuts down the lagcompressor and loads the remainingcompressor to about 80%. If applied loaddecreases further, the remaining compressorunloads proportionately. If applied loaddecreases to less than the minimum capacity ofone compressor, the leaving chilled watertemperature will decline to 2°F below setpoint,at which time the lead compressor will shutdown. It will restart automatically if leavingchilled water temperature rises to 2°F abovesetpoint and both 15 minute anti-recycle andone minute start delay timers are satisfied.

During start-up operation, the computermonitors the difference between discharge andsuction pressures to ensure that minimum of 30psi differential is available for compressorlubrication. If the difference falls below aminimum of 30psi, the computer closesrefrigerant flow control valves, starving theevaporator, causing evaporator pressure todrop, increasing differential pressure. This isespecially helpful at startup, when warm chilledwater and low ambient temperature wouldcause a low head situation. This feature iscalled EPCAS: Evaporator Pressure Control atStartup. It is one of several proactive controlfeatures of the microcomputer which overcomepotential problems while continuing operation.

Two additional proactive features are lowsuction and high discharge pressure override. Ifoperating pressures approach trip level,compressors are unloaded as necessary tocontinue operation.

- 9 -

PHYSICAL SPECIFICATIONS

MODEL AFHX 90-5 90T-5 120-5 110T-5 140-5 125T-5 160-5 160T-5 180-5 190-5 220-5

COMPRESSOR

MODEL (QTY) HISC 1512x 1

HISC 1309x 2

HISC 1709x 1

HISC 1311x 2

HISC 1711x 1

HISC 1311x 1,

HISC 1509x 1

HISC 1811x 1

HISC 1509x 1

HISC 1512x 1

HISC 1813x 1

HISC 1512x 2

HISC 1512x 1,

HISC 1709x 1

RPM 2950 2950 2950 2950 2950 2950 2950 2950 2950 2950 2950

NOMINAL CAPACITY TR 90.0 90.0 120.0 110.0 140.0 125.0 160.0 160.0 180.0 190.0 220.0

MIN. % UNIT CAPACITYREDUCTION

25% 12.5% 25% 12.5% 25% 12.5% 25% 12.5% 25% 12.5% 12.5%

EVAPORATOR

MODEL (QTY) B1(1) B1(1) C1(1) C1(1) D1(1) D1(1) D2(1) D2(1) D2(1) B1(2) C1(2)

WATER CONNECTOR INCH 5 5 5 5 6 6 6 6 6 6 6

NOM. WATER FLOW / P DGPM / FT IN WG

216/9.92 216/9.92 288/10.8 264/9.2 336/8.7 300/7.1 384/9.0 384/9.0 432/11.2 456/11.8 528/10.38

MIN/ MAX WATER FLOWGPM

74/372 74/372 96/480 96/480 125/577 125/577 140/703 140/703 140/703 148/743 193/958

MIN/ MAX WATER PDFT IN WG

1.5/26.5 1.5/26.5 1.5/27.0 1.5/27.0 1.5/23.1 1.5/23.1 1.5/27.0 1.5/27.0 1.5/27.0 1.6/28.8 1.7/30.9

CONDENSER

COIL ROWS DEEP/ TOTAL FA(SQ.FT)

3/141.2 3/141.2 4/141.2 4/141.2 4/188.2 3/94.1,4/94.1

4/188.2 4/188.2 3/235.3 3/282.3 3/282.3

NO. OF FAN 6 6 6 6 8 8 8 8 8 12 12

FAN DIA. MM 800 800 800 800 800 800 800 800,860 860 800 800,860

MOTOR HP (QTY) 1.5(6) 1.5(6) 1.5(6) 1.5(6) 1.5(8) 1.5(8) 1.5(8) 15.(8) 1.5(8) 1.5(12) 1.5(12)

FLA, AMP (QTY) 3.2(6) 3.2(6) 3.2(6) 3.2(6) 3.2(8) 3.2(8) 3.2(8) 3.2(8) 3.2(8) 3.2(12) 3.2(12)

TOTAL CFM 77175 77175 72765 72765 98700 94710 94500 99960 101220 153405 157185

MIN. AMBIENT TEMP. (F) ATMIN. LOAD

45 45 45 45 45 45 45 45 45 45 45

ELECTRICAL

NOM. VOLTAGE 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50

UNIT RLA A 152 84(2) 204 96(2) 233 96(1),127(1)

272 127(1),159(1)

304 151(1),152(1)

151(1),198(1)

UNIT MAX. INRUSH A 171 205 223 254 259 291 298 351 330 414 459

GENERAL

UNIT LENGTH INCH 149.5 149.5 149.5 149.5 191.5 191.5 191.5 191.5 210 275.5 275.5

UNIT WIDTH INCH 88 88 88 88 88 88 88 88 88 88 88

UNIT HEIGHT INCH 94 94 94 94 94 94 94 94 96 96 96

SHIPPING WEIGHT LBS 8217 8637 9268 9647 10928 11290 11388 12077 12111 15661 16555

OPERATING WEIGHT LBS 8313 8732 9391 9770 11088 11451 11568 12257 12291 15847 16795

OPERATING CHARGE R-22LBS

199 199 265 243 309 276 354 354 398 420 486

- 10 -

PHYSICAL SPECIFICATIONS

MODEL AFHX 250-5 275-5 295-5 315-5 340-5 375-5 435-5 490-5 545-5 595-5 635-5

COMPRESSOR

MODEL (QTY) HISC 1709x 2

HISC 1709x 1,

HISC 1711x 1

HISC 1711x 2

HISC 1711x 1,

HISC 1811x 1

HISC 1811x 2

HISC 1813x 2

HISC 1813x 1,

HISC 1816x 1

HISC 1816x 2

HISC 1813x 3

HISC 1813x 2 ,

HISC 1816x 1

HISC 1813x 1

HISC 1816x 2

RPM 2950 2950 2950 2950 2950 2950 2950 2950 2950 2950 2950

NOMINAL CAPACITY TR 250.0 275.0 295.0 315.0 340.0 375.0 435.0 490.0 545.0 595.0 635.0

MIN. % UNIT CAPACITYREDUCTION

12.5% 12.5% 12.5% 12.5% 12.5% 12.5% 12.5% 12.5% 8.33% 8.33% 8.33%

EVAPORATOR

MODEL (QTY) D1(2) D1(2) D1(2) D1(2) D2(2) E1(2) K1(2) K2(2) V2(1) V3(1) V4(1)

WATER CONNECTOR INCH 8 8 8 8 8 8 8 8 12 12 12

NOM. WATER FLOW / PD GPM / FT IN WG

552/6.5 660/8.93 708/10.1 756/11.4 816/10.9 900/9.2 1044/18.44 1176/19.7 1308/18.2 1428/19.8 1524/28.1

MIN/ MAX WATER FLOWGPM

250/1127 250/1127 250/1127 250/1127 283/1408 352/1408 311/1392 341/1361.2 369/1849 386/1931 427/2135

MIN/ MAX WATER PDFT IN WG.

1.6/23.6 1.6/23.6 1.6/23.6 1.6/23.6 1.6/29.4 1.7/20.9 2.1/31.1 2.1/25.7 1.9/34.0 1.9/34.0 2.9/51.6

CONDENSER

COIL ROWS DEEP/ TOTAL FA(SQ.FT)

4/141.2,3/141.2

4/141.2,3/188.2

3/376.4 4/188.2,3/188.2

4/376.4 4/188.2,3/235.3

4/577.5 6/577.5 6/577.5 6/641.7 6/641.7

NO. OF FAN 12 14 16 16 16 18 18 18 18 20 20

FAN DIA. MM 860 860,800 800 800 860,800 860 860 860 860 860 860

MOTOR HP (QTY) 1.5(12) 1.5(14) 1.5(16) 1.5(16) 1.5(16) 1.5(18) 1.5(18) 4.0(8),3.0(10)

4.0(18) 4.0(20) 4.0(20)

FLA, AMP (QTY) 3.2(12) 3.2(14) 3.2(16) 3.2(16) 3.2(16) 3.2(18) 3.2(18) 7.1(8),5.5(10)

7.1(18) 7.1(20) 7.1(20)

TOTAL CFM 159075 179760 201600 194460 195720 236145 256095 284130 297675 334530 330750

MIN. AMBIENT TEMP. (F) ATMIN. LOAD

45 45 45 45 45 45 45 45 45 45 45

ELECTRICAL

NOM. VOLTAGE 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50 415/3/50

UNIT RLA A 198(2) 198(1),231(1)

231(2) 231(1),272(1)

274(1),272(1)

297(1),304(1)

298(1),382(1)

387(1),388(1)

301(3) 301(2),388(1)

301(1),406(2)

UNIT MAX. INRUSH A 471 511 572 613 650 775 853 975 1143 1244 1367

GENERAL

UNIT LENGTH INCH 275.5 317.5 359.5 359.5 359.5 401.5 401.5 401.5 414 456 456

UNIT WIDTH INCH 88 88 88 88 88 88 88 88 88 88 88

UNIT HEIGHT INCH 96 96 96 96 96 96 120 120 120 120 120

SHIPPING WEIGHT LBS 17337 20198 20866 21329 21855 25475 29245 32661 35138 37751 38221

OPERATING WEIGHT LBS 17689 20510 21179 21641 22207 25915 29719 33182 36378 39017 39453

OPERATING CHARGE R-22LBS

553 608 652 696 751 829 961 1083 1204 1315 1403

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PERFORMANCE DATA

LWT MODEL AMBIENT TEMPERATURE, oFoF AFHX 85.0 95.0 105.0 115.0 125.0

TR kW TR kW TR kW TR kW TR kW

90-5 86.7 87.5 82.0 97.4 78.5 108.3 73.9 118.4 63.0 122.6

40.0 90T-5 86.6 91.6 82.0 102.0 78.5 113.5 73.9 124.0 62.5 127.3120-5 113.8 115.4 107.7 128.5 103.1 142.8 97.1 156.0 82.8 161.6

110T-5 107.2 107.4 101.5 119.6 97.1 132.9 91.5 145.2 78.0 150.4140-5 134.9 130.6 127.6 145.4 122.2 161.6 115.0 176.6 98.1 182.9

125T-5 122.6 117.4 116.0 130.6 111.1 145.3 104.6 158.7 89.2 164.4160-5 155.4 156.8 147.0 174.6 140.7 194.1 132.5 212.1 112.9 219.7

160T-5 153.2 155.0 145.0 172.5 138.8 191.9 130.7 209.6 106.6 207.9180-5 174.1 171.8 164.7 191.3 157.7 212.8 148.5 232.4 126.5 240.7

190-5 183.9 168.2 174.3 187.1 167.3 208.3 158.2 227.8 134.8 235.4220-5 214.6 195.9 203.3 218.0 195.1 242.6 184.4 265.3 156.9 274.2

250-5 242.0 224.4 229.4 249.7 220.2 277.9 208.1 304.0 176.0 314.0275-5 265.9 237.4 252.0 264.3 241.8 294.0 228.5 321.6 194.3 332.4

295-5 286.5 256.7 271.5 285.8 260.6 317.9 246.4 347.8 209.1 359.3315-5 307.2 282.0 291.0 313.9 279.3 349.2 264.0 382.0 224.4 394.7

340-5 331.9 307.6 314.5 342.4 301.9 381.0 285.4 416.8 242.2 430.6375-5 363.1 338.0 344.2 376.3 330.4 418.8 312.3 458.1 266.1 473.2

435-5 423.7 385.0 401.5 428.7 385.3 476.9 364.0 521.6 309.3 539.1490-5 475.3 435.3 450.5 484.7 432.4 539.4 408.8 590.0 348.4 609.5

545-5 530.2 504.9 501.7 562.3 480.2 625.4 452.2 683.1 385.3 707.4595-5 576.0 553.0 545.0 615.9 521.7 684.9 491.3 748.1 418.7 774.7

635-5 616.9 618.7 583.7 689.1 558.8 766.2 526.2 836.9 448.2 866.5

90-5 90.1 88.0 85.4 98.0 81.9 109.1 77.4 119.3 65.4 122.6

42.0 90T-5 90.1 92.1 85.4 102.7 81.9 114.2 77.4 125.0 64.9 127.3

120-5 118.4 116.1 112.2 129.2 107.7 143.8 101.7 157.2 86.0 161.6110T-5 111.5 108.1 105.7 120.3 101.4 133.9 95.8 146.4 81.0 150.4

140-5 140.3 131.3 132.9 146.3 127.5 162.7 120.5 178.0 101.9 182.9125T-5 127.5 118.1 120.8 131.4 116.0 146.2 109.5 159.9 92.6 164.4

160-5 161.6 157.7 153.1 175.6 146.9 195.4 138.8 213.7 117.4 219.7160T-5 159.4 155.8 151.0 173.6 144.9 193.1 136.8 211.2 110.8 207.9

180-5 181.1 172.8 171.6 192.4 164.6 214.1 155.5 234.2 131.5 240.7190-5 191.3 169.1 181.5 188.2 174.5 209.5 165.4 229.5 140.0 235.4

220-5 223.2 197.1 211.7 219.2 203.6 244.1 192.8 267.2 162.9 274.2250-5 251.7 225.7 238.8 251.1 229.7 279.6 217.6 306.2 182.6 314.0

275-5 276.6 238.8 262.3 265.8 252.3 295.9 239.0 324.0 201.6 332.4295-5 298.0 258.2 282.7 287.4 271.9 319.9 257.6 350.3 217.0 359.3

315-5 319.5 283.6 303.0 315.6 291.4 351.3 276.1 384.7 232.9 394.7340-5 345.2 309.4 327.5 344.3 315.0 383.3 298.4 419.8 251.4 430.6

375-5 377.7 340.1 358.3 378.4 344.6 421.2 326.5 461.3 276.3 473.2435-5 440.7 387.2 418.0 431.0 401.9 479.8 380.7 525.4 321.1 539.1

490-5 494.3 438.0 469.0 487.4 451.1 542.6 427.4 594.2 361.6 609.5545-5 551.5 508.0 522.5 565.5 501.4 629.2 473.6 688.2 400.6 707.4

595-5 599.2 556.2 567.6 619.3 544.7 689.1 514.5 753.7 435.2 774.7635-5 641.7 622.3 608.0 692.9 583.3 771.1 551.1 843.3 465.8 866.5

90-5 94.1 88.6 90.1 99.5 85.8 109.8 81.3 120.2 68.2 122.644.0 90T-5 94.1 92.9 90.1 104.2 85.8 115.0 81.3 125.9 67.6 127.3

115-5 123.6 116.8 115.2 127.7 112.8 144.7 106.9 158.5 89.7 161.6110T-5 116.5 108.6 110.5 121.1 106.2 134.7 100.7 147.5 84.4 150.4

140-5 146.4 132.2 140.1 148.5 133.6 163.8 126.6 179.4 106.2 182.9125T-5 133.2 118.7 125.3 131.2 121.5 147.2 115.1 161.2 96.6 164.4

160-5 168.7 158.7 160.0 176.8 153.9 196.8 145.8 215.5 122.3 219.7160T-5 166.4 156.9 160.1 177.0 151.8 194.4 143.8 212.9 115.5 207.9

180-5 189.0 173.9 180.0 194.4 172.5 215.6 163.4 236.1 137.1 240.7190-5 199.1 170.2 190.1 190.3 182.2 210.8 173.1 231.1 145.4 235.4

220-5 232.4 198.2 220.7 220.5 212.6 245.6 201.9 269.2 169.3 274.2250-5 262.0 227.1 250.1 253.8 239.8 281.3 227.7 308.4 189.6 314.0

275-5 287.9 240.3 275.2 269.2 263.4 297.7 250.2 326.3 209.5 332.4295-5 310.2 259.9 295.0 289.6 283.8 321.8 269.6 352.8 225.4 359.3

315-5 332.6 285.4 315.8 317.5 304.3 353.5 289.0 387.6 241.9 394.7340-5 359.3 311.3 341.3 346.4 328.8 385.7 312.3 422.8 261.1 430.6

375-5 393.2 342.1 375.0 382.2 359.8 423.9 341.7 464.7 286.8 473.2435-5 458.9 389.7 435.8 433.5 419.8 482.9 398.6 529.3 333.6 539.1

490-5 514.6 440.7 490.1 491.6 470.9 546.0 447.3 598.5 375.5 609.5545-5 575.7 511.1 546.2 569.0 525.3 633.6 497.7 693.8 417.6 707.4

595-5 625.5 559.7 595.0 624.9 570.7 694.0 540.7 759.9 453.6 774.7635-5 669.9 626.2 635.5 697.2 611.2 776.5 579.1 850.2 485.5 866.5

NOTE : UNIT IS RUNNING ON PART LOAD FOR AMBIENT TEMPERATURE OF 115oF AND ABOVE DUE TO CURRENT LIMITER.

- 12 -

PERFORMANCE DATA

LWT MODEL AMBIENT TEMPERATURE, oFoF AFHX 85.0 95.0 105.0 115.0 125.0

TR kW TR kW TR kW TR kW TR kW

90-5 97.9 89.1 93.0 99.1 89.5 110.4 85.0 121.0 70.8 122.6

46.0 90T-5 97.9 93.4 93.0 103.8 89.5 115.7 85.0 126.7 70.2 127.3120-5 128.6 117.5 122.2 130.7 117.7 145.6 111.7 159.5 93.0 161.6

110T-5 121.2 109.3 115.1 121.7 110.8 135.5 105.2 148.5 87.6 150.4140-5 152.4 133.0 144.7 148.0 139.4 164.7 132.3 180.5 110.2 182.9

125T-5 138.6 119.4 131.6 132.9 126.7 148.0 120.3 162.2 100.2 164.4160-5 175.5 159.7 166.7 177.7 160.5 197.9 152.4 216.9 126.9 219.7

160T-5 173.1 157.8 164.4 175.5 158.3 195.5 149.0 212.4 119.8 207.9180-5 196.7 175.0 186.8 194.7 179.9 216.8 170.8 237.6 142.3 240.7

190-5 206.9 171.2 196.6 190.3 189.7 212.0 180.5 232.6 150.5 235.4220-5 241.5 199.4 229.5 221.7 221.4 246.9 210.6 271.0 175.3 274.2

250-5 272.2 228.5 258.7 254.0 249.6 282.9 237.5 310.4 196.3 314.0275-5 299.1 241.8 284.3 268.8 274.3 299.3 260.9 328.4 216.9 332.4

295-5 322.2 261.5 306.2 290.7 295.5 323.6 281.1 355.1 233.4 359.3315-5 345.6 287.2 328.4 319.3 316.8 355.5 301.4 390.1 250.5 394.7

340-5 373.3 313.3 354.7 348.2 342.3 387.8 325.7 425.6 270.4 430.6375-5 408.4 344.2 388.1 382.7 374.5 426.2 356.3 467.7 296.9 473.2

435-5 476.8 392.1 453.1 435.9 437.1 485.5 415.8 532.7 345.5 539.1490-5 534.5 443.4 508.0 492.9 490.2 548.9 466.4 602.4 388.7 609.5

545-5 599.2 514.2 568.9 572.1 548.0 637.1 520.2 698.3 433.3 707.4595-5 650.9 563.2 618.0 626.6 595.3 697.8 565.2 764.8 470.7 774.7

635-5 697.1 630.1 661.9 701.0 637.5 780.7 605.3 855.7 503.8 866.5

90-5 101.7 89.7 96.7 99.7 93.3 111.0 88.7 121.8 73.3 122.6

48.0 90T-5 101.7 93.9 96.7 104.4 93.3 116.3 88.7 127.5 72.7 127.3

120-5 133.7 118.2 127.0 131.4 122.5 146.4 116.5 160.6 96.4 161.6110T-5 125.9 110.0 119.6 122.3 115.4 136.2 109.8 149.4 90.7 150.4

140-5 158.4 133.8 150.5 148.8 145.2 165.6 138.1 181.7 114.1 182.9125T-5 144.0 120.2 136.8 133.6 132.0 148.8 125.5 163.3 103.8 164.4

160-5 182.4 160.7 173.3 178.7 167.2 199.0 159.0 218.3 131.5 219.7160T-5 179.9 158.7 170.9 176.5 164.9 196.6 152.7 210.0 124.1 207.9

180-5 204.4 176.0 194.2 195.7 187.4 218.0 178.2 239.1 147.3 240.7190-5 214.6 172.2 204.1 191.4 197.2 213.1 187.9 234.1 155.5 235.4

220-5 250.6 200.6 238.3 223.0 230.2 248.3 219.3 272.7 181.2 274.2250-5 282.3 229.9 268.5 255.4 259.4 284.5 247.3 312.4 203.0 314.0

275-5 310.3 243.3 295.1 270.3 285.1 301.0 271.7 330.6 224.2 332.4295-5 334.2 263.1 317.8 292.2 307.1 325.4 292.7 357.4 241.2 359.3

315-5 358.5 288.9 340.9 321.0 329.3 357.4 313.8 392.5 259.0 394.7340-5 387.2 315.2 368.2 350.1 355.7 389.9 339.1 428.3 279.5 430.6

375-5 423.6 346.3 402.9 384.7 389.2 428.5 371.0 470.7 306.8 473.2435-5 494.7 394.5 470.4 438.2 454.4 488.1 433.0 536.1 357.2 539.1

490-5 554.5 446.2 527.3 495.5 509.5 551.9 485.6 606.2 401.7 609.5545-5 622.6 517.3 591.6 575.2 570.6 640.6 542.7 702.8 448.7 707.4

595-5 676.4 566.6 642.7 630.0 619.9 701.6 589.6 769.7 487.5 774.7635-5 724.4 634.0 688.3 704.8 663.9 785.0 631.5 861.2 521.8 866.5

90-5 105.6 90.2 100.4 100.2 97.0 111.6 92.4 122.6 75.8 122.650.0 90T-5 105.6 94.4 100.4 105.0 97.0 116.9 91.6 127.3 75.2 127.3

120-5 138.7 119.0 131.9 132.1 127.4 147.2 121.4 161.6 99.6 161.6110T-5 130.7 110.6 124.2 122.9 120.0 137.0 114.3 150.4 93.8 150.4

140-5 164.3 134.6 156.2 149.6 150.9 166.5 143.8 182.9 118.0 182.9125T-5 149.4 120.9 142.1 134.3 137.2 149.7 130.7 164.4 107.3 164.4

160-5 189.3 161.7 180.0 179.6 173.8 200.0 165.6 219.7 135.9 219.7160T-5 186.7 159.7 177.5 177.4 171.4 197.7 156.3 207.9 128.3 207.9

180-5 212.1 177.1 201.7 196.8 194.8 219.2 185.6 240.7 152.3 240.7190-5 222.7 173.3 211.9 192.4 204.9 214.2 195.5 235.4 160.9 235.4

220-5 260.1 201.9 247.5 224.2 239.2 249.6 228.2 274.2 187.5 274.2250-5 293.0 231.4 278.9 256.8 269.6 285.9 257.2 314.0 210.0 314.0

275-5 322.1 244.8 306.5 271.7 296.4 302.5 282.7 332.4 231.9 332.4295-5 346.9 264.7 330.1 293.8 319.2 327.0 304.5 359.3 249.5 359.3

315-5 372.1 290.7 354.1 322.7 342.3 359.3 326.6 394.7 267.9 394.7340-5 401.9 317.2 382.4 351.9 369.8 391.9 352.8 430.6 289.1 430.6

375-5 439.7 348.5 418.4 386.8 404.6 430.7 386.0 473.2 317.4 473.2435-5 513.5 397.0 488.6 440.6 472.3 490.6 450.6 539.1 369.6 539.1

490-5 575.5 449.0 547.6 498.2 529.5 554.7 505.3 609.5 415.6 609.5545-5 646.0 520.5 614.3 578.3 593.3 644.1 565.3 707.4 464.0 707.4

595-5 701.8 570.1 667.3 633.4 644.5 705.4 614.1 774.7 504.1 774.7635-5 751.6 637.9 714.7 708.6 690.3 789.2 651.2 866.5 539.6 866.5

NOTE : UNIT IS RUNNING ON PART LOAD FOR AMBIENT TEMPERATURE OF 115oF AND ABOVE DUE TO CURRENT LIMITER.

- 13 -

DIMENSIONAL DATA

AFHX 90-5, 90T-5, 120-5, 110T-5

AFHX 140-5, 125T-5, 160-5, 160T-5

NOTE : ALL DIMENSIONS ARE IN INCHES(MM).

- 14 -

DIMENSIONAL DATA

AFHX 180-5

AFHX 190-5, 220-5, 250-5

NOTE : ALL DIMENSIONS ARE IN INCHES(MM).

- 15 -

DIMENSIONAL DATA

AFHX 275-5

AFHX 295-5, 315-5, 340-5

NOTE : ALL DIMENSIONS ARE IN INCHES(MM).

- 16 -

DIMENSIONAL DATA

AFHX 375-5

AFHX 435-5, 490-5

NOTE : ALL DIMENSIONS ARE IN INCHES(MM).

- 17 -

DIMENSIONAL DATA

AFHX 545-5

AFHX 595-5, 635-5

NOTE : ALL DIMENSIONS ARE IN INCHES(MM).

- 18 -

TYPICAL WIRING SCHEMATIC

TWO COMPRESSORS UNIT

- 19 -

TYPICAL WIRING SCHEMATIC

- 20 -

Ω

Ω

TYPICAL WIRING SCHEMATIC

- 21 -

TYPICAL WIRING SCHEMATIC

- 22 -

TYPICAL WIRING SCHEMATIC

- 23 -

SOUND PRESSURE LEVEL AT 10 METER

SPL dBA BAND (Hz)

Model 63 125 250 500 1K 2K 4K 8K Total NC

AFHX 90-5 36 40 50 57 57 54 50 45 62 55

AFHX 90T-5 36 40 50 58 58 54 50 45 62 60

AFHX 120-5 39 43 53 60 60 57 53 48 65 60

AFHX 110T-5 39 43 53 60 60 56 53 48 64 60

AFHX 140-5 40 45 54 61 61 58 54 49 66 60

AFHX 125T-5 42 47 56 62 62 60 57 51 67 60

AFHX 160-5 40 45 54 63 62 58 54 49 67 60

AFHX 160T-5 41 46 55 61 62 59 56 50 67 60

AFHX 180-5 40 45 58 63 62 58 54 49 67 60

AFHX 190-5 41 45 54 61 61 59 55 50 66 60

AFHX 220-5 43 47 57 63 63 61 57 52 68 60

AFHX 250-5 43 48 57 64 64 61 58 52 69 65

AFHX 275-5 43 48 57 64 64 61 57 52 69 65

AFHX 295-5 43 48 57 64 64 61 57 52 69 65

AFHX 315-5 43 48 57 65 65 61 57 52 69 65

AFHX 340-5 43 48 57 66 65 61 57 52 70 65

AFHX 375-5 44 49 61 66 66 62 58 53 71 65

AFHX 435-5 46 50 62 67 67 63 60 55 72 65

AFHX 490-5 44 55 63 68 68 64 61 56 73 70

AFHX 545-5 49 53 64 69 69 66 63 58 74 70

AFHX 595-5 49 53 65 70 70 67 63 58 75 70

AFHX 635-5 49 53 65 70 70 67 63 58 75 70

- 24 -