McQuay Air Cooled Mini ChillerModels: MAC065C MAC070C MAC080C MAC100C MAC120C MAC150C

Technique Manual

Engineered for flexibility and performance.TM

MiniChiller-2007-001(60Hz)

1

“McQuay”isaregisteredtrademarkofMcQuayInternational.Allrightsreservedthroughouttheworld.

©2007McQuayInternational

“BulletinillustrationscoverthegeneralappearanceofMcQuayInternationalproductsatthetimeofpublicationandwereservetherighttomakechangesindesignandconstructionatanytimewithoutnotice.”

Note:Installation and maintenance are to be performed only by qualified personnel who are familiarwithlocalcodesandregulations,andexperiencedwiththistypeofequipment.

Caution: Sharpedgesandcoilsurfacesareapotentialinjuryhazard.Avoidcontactwiththem.

Warning:Movingmachineryandelectricalpowerhazard.Maycauseseverepersonalinjuryordeath.Disconnectandlockoffpowerbeforeservicingequipment.

Contents

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

Features................................................................................................................................ 3

Specifications ...................................................................................................................... 5

Sound data ........................................................................................................................... 8

Performance Data ................................................................................................................ 9

Outlines and Dimensions ..................................................................................................11

Accessory Hydraulic Kit ................................................................................................... 13

Electric Data ....................................................................................................................... 14

Wiring Diagram .................................................................................................................. 15

Installation .......................................................................................................................... 19

Exposed View .................................................................................................................... 27

2

Nomenclature

M AC 080 C R – P AB - E

ExportU:SpecialForLatinMarketing

MainComponents

PowerSupply:P-208~230V/3Ph/60HzK-220V/1Ph/60Hz

HeatPumpBlank:CoolingOnly

DesignSeries

NomianlCoolingCapacity

AirCooledChiller

McQuay

3

Features

SuperiorPerformanceExtensive researchworkcoupledwithworld leadingmanufacturing technologyhas resulted thenewdesignwithsuperb performance and high efficiency.Stringentqualitycontrolandcomponentselectionensureperformanceandreliability.Majorcomponentsarerigorouslytested and qualified prior to usage in the machine.Everymachinedesignhaspassedmanyhoursofrigoroustestingtoensurethemachinereliability,durabilityandquality.Scroll compressor brings much higher energy efficiency. High efficiency heat exchanger ensures strenuous exertion ofequipmentcapacity.Waterpumpparticularlydesignedforairconditioningengineeringisoperatingsteadilywithminimumvibrationandnoise.

For MAC080C/CR To MAC150C/CRTheseunitsaredesignedwithdoubleindependentrefrigeratingsystem,greaterenergysavingisachievedbyonlyonecompressorondutyunderpartloadcondition.

Robust Construction With Slim OutlookDetailedengineeringworkcoupledwithextensivemarketresearchhasresultedthenewMACmodelcomeinnewmono-blockdesigntoyieldacompactandrobuststructurewhilemaintainingtheslimoutlook.ThesmallercapacitymodelsMAC030-070C(R)arehavingsidedischargedesign,whilethelargercapacitymodelsMAC080-150C(R)arehavingtopdischargedesign.

Simple To OperateThemachineiscompletewithintelligentmicroprocessorcontrollerandtemperaturesensortoautomaticallycontrolthe operation to its optimum condition, making it very simple to operate. All temperature settings are finished before shipment.TheonlythingforusertodoistostarttheunitbypressingtheON/OFFbuttonafterensuringunitproperfunction,theneveryoperationcanbeautomaticallyperformedbytheunititself.Eitherwireless remotecontrollerorwiredremotecontroller is ready forchoosing tomeetsatisfactory indoorunitcontrol,bothcompatiblewiththeunit.

Friendly InstallationThemachinehasbeendesignedwithfriendlyinstallationinmindsothatnorefrigerationchargingorcopperpipebrazingisrequiredonsite.Threaded fitting is provided for easy water piping connection on site.Waterinletandoutletareprovidedonbothsidesofthemachinesuchthatpipingcanbeconnectedoneithersideofthemachine.RustresistantPP-Rcompositewaterpipewithgoodinsulationpropertyandhighdurabilityisstandardpartsinthemachine.Stainless steel taper threaded fittings target convenient disassembly or assembly.For MAC080C/CR To MAC150C/CR, expansion chamber, water pump and water flow switch are already equipped inthiscompactpackagedunitwithtopairdischarge,inaddition,McQuayprovideaccessoryhydraulickitwithwaterstorage tank, auto water fill valve, auto air vent valve, auto pressure relief valve and strainer integrated in, aiming at ensuring high efficiency and safe operation. For MAC030C/CR To MAC070C/CR, expansion chamber is required in theaccessoryhydraulickitinsteadofbeingincorporatedinunit.

Safety ControlProtectiondevicessuchasdualpressureprotectionandoverloadprotectionetc.isprovidedtoensureunitoperatingwithin safety condition range. The microprocessor-based controller automatically directs system on or off byprocessingthewatertemperaturefeedback.Ifthewatertemperaturefallstounacceptablelowpoint,thecontrollerautomaticallyshutoffthesystemtopreventhydraulicsysteminternalfreezeforunitsafetyoperation.Meanwhile,

�

themicroprocessor-basedcontrollerautomaticallymonitorseverycomponentoperatingstatusandmalfunction,andfeedbackittoindoorcontrollertogreatlyeasetheworkofstatusmonitorandtroubleshooting.

All WeatherThecabinetismadeofelectrogalvanizedmildsteelsheet,coatedwithbakedpolyesterpowertoensuretheunitsextradurabilityinallclimatesagainstsun,rain,windcorrosion.Spacesaving (small footprint) designof themachineeliminates large installationarea requirement, noneed forequipmentroom.Themachineuseshighqualitypartstoensuredurabilityinvariousclimateconditions.

Simple To MaintainThesimpledesignofthemachineallowsformaximumserviceability.Allcomponentsarewithreachofthemaintenancepersonneluponopenupoftheservicingpanel.Ifemergencyshutoffoccurs,themicroprocessor-basedcontrollerwillindicatesthefaultcausetoquickenandeasetroubleshooting.

Three Color Appearance Available (For MAC030C/CR To MAC070C/CR)Therearethreeoptionalcolors-blue,greenandredavailabletobeeasilychosentomeetcustomers’requirements,sotheunitcanbeharmonicallyblendintobuildingoveralllook.

5

SpecificationsGeneral DataMODEL MAC065C MAC070C MAC080C MAC100C MAC120C MAC150C

NOMINAL COOLING CAPACITY Btu/h 57000 60000 76800 92200 112700 130000

SENSIBLE COOLING CAPACITY kW 16.7 17.5 22.5 27.0 33.0 38.0

NOMINAL TOTAL COOLING INPUT POWER kW 6.85 7.90 9.30 10.76 13.27 1�.98

POWER SOURCE V/Ph/Hz 208~230/1/60 208~230/3/60

REFRIGERANT TYPE R22

CASING

MATERIAL ELECTRO-GALVANIZEDMILDSTEEL

FINISH EPOXYPOLYSTERPOWER

THICKNESS mm/in 1.20/0.0�7

UNIT DIMENSION

HEIGHT mm/in 1700/67 1700/67 1260/50 1260/50 1260/50 1260/50

WIDTH mm/in 1212/�8 1212/�8 1150/�5 1150/�5 1150/�5 1150/�5

DEPTH mm/in 502/20 502/20 1800/71 1800/71 1800/71 1800/71

ACCESSORY HYDRAULIC KIT DIMENSION

HEIGHT mm/in 500/20

WIDTH mm/in 816/32

DEPTH mm/in �00/16

PACKING DIMENSION

HEIGHT mm/in 1930/76 1930/76 1�53/57 1�53/57 1�53/57 1�53/57

WIDTH mm/in 13�0/53 13�0/53 1732/68 1732/68 2032/80 2032/80

DEPTH mm/in 650/26 650/26 1032/�1 1032/�1 1032/�1 1282/50

NET WEIGHT kg/lb 220/�85 235/518 3�0/750 350/772 �70/1036 550/1213

GROSS WEIGHT kg/lb 270/595 285/628 �10/90� �20/926 580/1279 650/1�33

NOTES:1) ALLSPECIFICATIONSARESUBJECTEDTOCHANGEBYTHEMANUFACTURERWITHOUTPRIOR

NOTICE.2) ALLUNITSAREBEINGTESTEDANDCOMPLYTOISO5151.3) NOMINALCOOLINGCAPACITYAREBASEDONTHECONDITIONSBELOW:COOLING:27°CDB/19°C

WBINDOORAND35°CDB/24°CWBOUTDOOR.

6

Components DataMODEL MAC065C MAC070C MAC080C MAC100C MAC120C MAC150C

EVAPORATOR

TYPE BRAZEDPLATEHEATEXCHANGE

PLATE MATERIAL STAINLESSSTEEL

MODEL NAME B3-052/�2 V25TH-38 20*20/ZL50V-��

B25-2�*2�/ZL50V-52

CB52-60/ZL50V-6�

CB52-72/ZL50V-76

NOMINAL WATER FLOW L/s(USGPM) 0.81/12.8� 0.92/1�.58 1.08/17.12 1.31/20.77 1.67/26.�7 2.00/31.70

WATER LINE

PUMP TYPE HORIZONTALMULTISTAGEENDSUCTION/PROPELLER/DIRECT

POWER SUPPLY V/Ph/Hz 208~230/1/60 208~230/3/60

RATED POWER INPUT KW 1.63 1.�0 1.53 1.53 1.85 1.85

RATED RUNNING CURRENT A 8.� �.9 3.5 3.5 7.8 7.8

INSTALLATION PIPE CONNECTION mm/in 3.175/Rc11/�

HEAD m 28 26 35 32 31 28

WATER PRESSURE DROP kPa(psi) 106/15 110/16 10�/16 110/16 107/16 103/15

EXPANSION TANK

MATERIAL STEEL

CAPACITY/VOLUME L 8

CONDENSER COIL

TYPE SEAMLESSCOPPERTUBE+CROSSALUMINIUMFIN

TUBE

MATERIAL COPPER

TYPE INNERGROOVE

WALL THICKNESS mm/in 0.30/0.012

OUTER DIAMETER mm/in 9.52/0.37

TUBE HEIGHT TH �1

FIN

MATERIAL ALUMINUM

THICKNESS mm/in 0.11/0.00�33

ROWS 2

FIN PER INCH 1�

TOTAL FACE AREA m2(ft2) 1.7�/18.7 1.7�/18.7 2.7�/29.5 2.7�/29.5 3.59/38.6 3.59/38.6

CONDENSER FAN

TYPE/DRIVE AXIALBIGVANEANDLOWNOISEBLOWER/DIRECT

QUANTITY 1 1 2 2 2 2

BLADE MATERIAL GALVANIZEDSTEEL

BLADE DIAMETER mm/in 710/28 710/28 600/2� 600/2� 660/26 660/26

POWER SUPPLY V/Ph/Hz 208~230/1/60 208~230/3/60

RATED INPUT POWER W 350 350 260*2 260*2 ��5*2 7�0*2

RATED RUNNING CURRENT A 1.6 1.5 0.9*2 0.9*2 1.1*2 1.5*2

MOTOR POLES 8

AIR VOLUME CMH/CFM 8000/�710 8000/�710 6500*2/3825*2

6500*2/3825*2

8500*2/5000*2

11000*2/6�75*2

7

MODEL MAC065C MAC070C MAC080C MAC100C MAC120C MAC150C

COMPRESSOR

TYPE SCROLL

QUANTITY 1 1 2 2 2 2

NOS OF CIRCUITS 1 1 2 2 2 2

POWER SUPPLY V/Ph/Hz 208~230/1/60 208~230/3/60

RATED INPUT POWER W 6.0� 6.3� 3.62 �.36*2 5.2�*2 5.80*2

RATED RUNNING CURRENT A 28.9 18.6 13.0*2 1�.5*2 17.5*2 18.5*2

MAXIMUM STARTING CURRENT A 36.0 25.2 20.0*2 25.0*2 26.0*2 25.2*2

PROTECTION DEVICES H/LPRESSURESWITCH/THERMALANDCURRENTOVERLOADPROTECTOR

STAGE OF CAPCITY CONTROL 0-100 0-100 0-50-100 0-50-100 0-50-100 0-50-100

INSULATION GRADE E

LOCKED ROTOR AMP. A 156 16� 91 128 156 16�

REFRIGERANT

TYPE R22

CONTROL CAPILLARY

REFRIGERANT CHARGE kg/lb 3.8/8.� �.3/9.5 3.5*2/7.7*2 �.0*2/8.8*2 5.8*2/12.8*2 5.7*2/12.6*2

NOTES:1) ALLSPECIFICATIONSARESUBJECTEDTOCHANGEBYTHEMANUFACTURERWITHOUTPRIOR

NOTICE.2) ALLUNITSAREBEINGTESTEDANDCOMPLYTOISO5151.3) NOMINALCOOLINGCAPACITYAREBASEDONTHECONDITIONSBELOW:COOLING:27°CDB/19°C

WBINDOORAND35°CDB/24°CWBOUTDOOR.

Components Data

8

Sound data

NOTES:1) ALLSPECIFICATIONSARESUBJECTEDTOCHANGEBYTHEMANUFACTURERWITHOUTPRIOR

NOTICE.2) SOUNDPRESSURELEVELAREACCORDINGTOMICROPHONEPOSITIONOFTHEMEASUREMENT

POINTIS1mINFRONTAND1mBELOWTHEUNIT.

MODEL1/1 Octave Sound Pressure Level(dB,ref 20uPa)

dB(A)63HZ 125HZ 250HZ 500HZ 1000HZ 2000HZ �000HZ 8000HZ

MAC065C 28.8 39.0 �8.0 51.7 5�.9 51.� �6.6 �1.� 6�.0

MAC070C 39.2 �2.9 �9.8 53.6 53.8 �8.3 �5.1 �2.5 6�.0

MAC080C 27.8 �0.2 �7.6 50.8 52.6 51.7 �6.8 39.5 62.8

MAC100C 35.� �1.5 �8.0 51.7 5�.3 51.0 �6.3 �0.� 63.8

MAC120C 32.2 �3.8 ��.3 53.1 5�.8 52.8 �7.3 �1.� 6�.6

MAC150C 35.0 ��.8 �6.� 5�.3 58.5 53.2 �8.1 �3.1 66.9

9

Performance DataCooling Only Unit Performance Chart

Note:Thechartsaboveshowtheunitperformancechangingcharacteristicinrelationshipwithvariableambienttemperatureandsupplywatertemperature.Pleasenoticethattheremayexistssomelittledifferencebetweentheperformanceofactualmanufacturedunitandthatobtainedusingthesecharts.

MAC Cooling Performance Chart

56789

10

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

1.25

Ambient Temperature ( )

Per

form

ance

Cor

rect

ion

Fac

tor

MAC Cooling Power Input Chart

5

67

8

9

10℃

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

2032 445382

2032 445382

Ambient Temperature ( )

Pow

er In

put C

orre

ctio

n F

acto

10

Correction Factors With Glycol Use

GLYCOL% COOLING CAPACITY WATER FLOW PRESSURE DROP

10 0.99 1.015 1.06

20 0.98 1.0� 1.12

30 0.97 1.08 1.18

�0 0.965 1.135 1.2�

NOTE：ALLTHECORRECTIONFACTORSWITHGLYCOLUSEAREUNDER7℃LEAVINGWATERTEMPERATURE.

11

Outlines and DimensionsModel: MAC065C, 070C

MAC065C,070C

A B C D E

1212 502 1700 1135 1162

F G H I J

132 25� 235 80 60�.5

4-10X20

2-Rc1

UNIT:mm

12

Model: MAC080C， 100C， 120C， 150C

A

27 G

Cable Port(OUT)

Chilled Water Out

Cable Port (IN)

Rc 1 1/4Chilled Water In

Rc 1 1/4

253.

512

8

CD

HP Gauge (SYS2)

LP Gauge (SYS2)

FB

E

100

Model MAC080C MAC100C MAC120C MAC150C

A 1500.0 1500.0 1800.0 1800.0

B 900.0 900.0 1150.0 1150.0

C 1260.0 1260.0 1260.0 1260.0

D 1190.0 1190.0 1190.0 1190.0

E 297.5 297.5 3�7.5 3�7.5

F (Mounting hole) 307.5 307.5 307.5 307.5

G (Mounting hole) 1��6.0 1��6.0 15�6.0 15�6.0

UNIT:mm

13

Accessory Hydraulic Kit

Water Drainage Port DN25

Chilled Water Out R1

Dirt Drainage Port R1/2

4-10x20

Chilled Water In R1

UNIT:mm

1�

Electric DataMODEL MAC065C MAC070C MAC080C MAC100C MAC120C MAC150C

NOMINAL TOTAL INPUT POWER kW 6.85 7.90 9.30 10.76 13.27 1�.98

POWER SOURCE V/Ph/Hz 208~230/1/60 208~230/3/60

POW

ER S

OU

RC

E W

IRE

MAIN WIRE (R/S/T)

SECTION AREA mm2 � � 6 6 10 10

QTY 3 3 3 3 3 3

NETURAL WIRE

SECTION AREA mm2 � � � � � �

QTY 1 1 1 1 1 1

EARTH WIRESECTION AREA mm2 1 1 1 1 10 10

QTY 1 1 1 1 1 1

CONTROL WIRE SECTION AREA mm2 1 1 1 1 1 1

CO

MPR

ESSO

R

INSULATION GRADE E

POWER SOURCE V/Ph/Hz 208~230/1/60 208~230/3/60

RATED INPUT POWER kW 6.0� 6.3� 3.62*2 �.36*2 5.2�*2 5.80*2

RATED RUNNING CURRENT A 28.9 18.6 13.0*2 1�.5*2 17.5*2 18.6*2

LOCKED ROTOR AMP. A 128 16� 91 128 128 16�

WAT

ER P

UM

P

INSULATION GRADE F

IP 5�

POWER SOURCE V/Ph/Hz 208~230/1/60 208~230/3/60

RATED INPUT POWER kW 1.63 1.�0 1.53 1.53 1.85 1.85

RATED RUNNING CURRENT A 8.� �.9 3.5 3.5 7.8 7.8

MO

TOR

INSULATION GRADE F

IP ��

POWER SOURCE V/Ph/Hz 208~230/1/60 208~230/3/60

RATED INPUT POWER W 200 350 260*2 260*2 ��5*2 7�0*2

RATED RUNNING CURRENT A 1.6 1.5 0.9*2 0.9*2 1.1*2 1.5*2

15

Wiring DiagramEnsurethattheratedvoltageoftheunitcorrespondstothatofthenameplatebeforegeneralprecautions.Provideapoweroutlettobeusedexclusivelyforeachunit.Apowersupplydisconnectsandacircuitbreakerforover-currentprotectionshouldbeprovidedintheexclusiveline.Themodularair-cooledchillersmustbewellgrounded.Itabsolutelycannotbeconnectedwithgas-pipe,waterpipeandtelephoneline.

MAC065C

16

MAC070C

MAC080C

17

MAC100C

MAC120C

18

MAC150C

19

InstallationInstallation NoticeThis equipment must be installed by your dealer or authorized McQuay qualified personnel, and the installation must satisfyallthefollowingrequirements.

LocationIn order to achieve maximum capacity, the location selection should fulfill the following requirements: 1) The location must be well ventilated, so that air can be drawn in and discharge out efficiently.

2) Installtheunitinsuchawaythatthehotairdischargecannotbedrawninagainbyitselforotherunits.3) Ensure that there is no obstruction to air flow into or out of the unit. Remove obstacles which blocking intake or

dischargeairifexist.

Lifting Hook

Lifting Cable

Backing Angle

AirIntake

AirDischarge

AirI

ntak

e

AirDischarge

AirIntake

20

�) Ifgoodventilationcannotbeguaranteedwhenunitbeinginstalledindoors,itisadvisabletoinducedischargeairfromairoutlettooutdoorsbyinstallingductwhichisasshortaspossible.

Obstacles Blocking Servicing Access

Obstacles Blocking Air Intake

5) Supportunitbaseuptocreateaspaceabovefoundationforensuringfreewaterdrainage,andthestablefoundationwith level surface must be sufficiently durable against the unit weight.

Drain Ditch

Unit Supporter

Unit

21

6) Thelocationmustnotbesusceptibletodustoroiltoavoidcondensercoilbeingchokedbythecontaminant.Asthe general safety precaution, it is advised that no flammable danger gas should be located near to the unit.

7) It is advised to have sufficient clearance around the unit for proper condenser air flow and to facilitate access for maintenance.( see clearance shown in figure below)

Delivery and LiftingWhentransportingtheunit,itisadvisabletouseforkliftorcranetodothiswork.Onlythewoodenskidbaseisallowedtobeservedastheweight-supporter.

22

Lifting Hook

Lifting Cable

Backing Angle

Whenhoisting,pleasekeeptheunitstableandwithoutslope,meanwhile,besuretoavoidliftingropescontactwithsideheatexchanger,panelandunit’stoppart.

Afterdecidingthemountinglocation,removetheskidbasebyunfasteningthebolts.

MountingWhenmounting,pleaseusefoundationboltsorexpansionboltstofastentheunitwithfoundationsupportinglegs.When installing indoors, it is advisable to pad the unit bottom against foundation by using vibration absorptionrubber.

Chilled Water PipingChilledwaterpipingmustbeinsulatedandwaterprooftoavoidperformancelossandmoisturecondensingonit.Toguaranteethechilledwaterquality,thewaterstrainershippedwithunitmustbeinstalledonthechilledwaterinpipe.BothchilledwaterinletandoutletportareR1-1/�externaltaperthreadconnections.When performing water pipe connection, use gripping pliers to fix the unit connections to avoid the reserved connectionsonunitbeingdirectlysufferedfromrevolvingtorquewhenfastening.The accessory water pipe components shipped with unit include water pump and water flow switch. Please install themonpipeinaccordancewiththechilledwatersysteminstallationschematicdiagram.Airventvalveshouldbeinstalledathighestpointsonchilledwaterpipingsystem,seedetailedinformationin“chilledwater system installationschematicdiagram”.After completingchilledwaterpiping, carryout leakdetectionand0.4MPa pressure test to ensure having no fault, then fully fill water in system, open air vent valve, purge all the air trappedinthepipingsystem,afterthatshutofftheairventvalve.Waterdrainagevalveshouldbeinstalledatlowestpointsonchilledwaterpipingsystem.In order to achieve the unit long-life operation, it is recommended to give first priority to new type plastic water pipe suchasPP-R,PVC,neverusegalvanizedsteelpipewhenchoosingthematerialofwaterpipe.

Theaccessorystrainershippedwithunitmustbeinstalledonwaterinpipe,otherwisefailureoftheunitmaybecaused.Theunitshouldbeconnectedwiththewatersupplysystemthroughtheautomaticfeederthatistheunitaccessory.Thepressureofthewatersupplysystemmustbemorethan1.5barandlessthan6bar.

23

Thermometer

Unit

Accessory Hydraulic Kit (optional)

Y Strainer

Flex

ible

Joi

nt

Shut

off

Valv

e

Flex

ible

Joi

nt

Shut

off

Valv

e

Shut

off

Valv

e

Shut

off

Valv

e

Hea

ter

Shut

off

Valv

e

Wat

er G

auge

T

Dirt Drainage Valve

FCU

Check Valve

T

Water Fill Valve

Globe Valve

Flexible Joint

T

Two Way Valve

FCU

FCU

FCU

Two Way Valve

Two Way Valve

Air Vent ValveTwo Way Valve

Hydraulic system installation schematic diagramWheninstallingtheMACunit,usingclosedwatersystemisstronglyrecommendedbyMcQuay,andpleaserefertotheschematicdiagramabove.Inordertoensureenergysavingandsystemsafeoperation,McQuayhasprovidedhydraulicsystemaccessories,includinginsulatedstainlesssteelwaterstoragetank,safetyvalve,dirtdrainagevalve,autoairventvalve,Y-shapedstrainer and automatic water fill valve etc.Auxiliaryheaterinthediagramaboveisavailableforoption,pleasechooseeithertypeofauxiliaryelectricheaterandauxiliarygasheater.Ifyouhavethedemand,pleasecontactwithyourdealerordirectlywithMcQuayCompany,andinstallitaccordingtothediagramabove;ifyouhavenotheneedofthistype,thecomponentsindottedlineboxcanbeomitted.

Ifthechillerisoperatedwithveryoily,saltyoracidicwater,thesesubstancesmayleadtocapacity drop. Be sure to use clean water when filling in the water circuit to avoid heavy corrosionandchokingofthesystem.

Don tuse thewaterpumpequipped inunit tocleanpiping. Ifusing thepump toclean isrequired, you can fill clean water in system at water in side, meanwhile make the pump running,pleaseconduct30-minutepumpoperation,thencleanthestrainer.

2�

Power ConnectionLawsandregulationsconcerningelectricalwiringworkvarybycountry.Therefore,workshouldbasicallybeperformedaccordingtotheregulationsofeachcountry.Beforepowerconnection,makesurethatyourlocalpowersupplytypeaccordswiththeunitnameplate.Pleaseusesuitablesizededicatedwiretopowerthisunit.Theconnectionsmustbemadesecuredwithouttensiontheterminals.Allelectricworkmustbeperformedbylicensedtechnicianaccordingtolocalregulationsandtheinstructionsgiveninthiscatalogue.Theunitmustbeproperlyearthconnected.Donotconnecttheearthwiretogaspipe,citywaterpipeortelephonewire,improperearthconnectionmaycauseelectricalshock.Pleasemountelectricleakprotectionbreakertoavoidelectricshock.Pleaseensurecorrectphasesequence,makeL1,L2,L3correspondwithR,S,Tonterminalblockrespectively,otherwisethesystemcannotbestartedandthecontrollerhasnodisplay.Every wire should be firmly connected without tension to the cables and terminals.Allcablesshouldnotcontactwithrefrigeratingpipingandmoveablecomponentssuchascompressorandfanmotoretc.

Servicing and Maintenance

ServicingService and maintenance are to be performed only by qualified personnel who are well trained with refrigeration engineering.Beforerestarttheunit,doathoroughcheckandanalysisoftheunitsafetycontrolcomponents.Theoptimumdesignoftherefrigeratingsystemeliminatesthepossibilityofproblemsbeingoccurredduringnormaloperation.Thereisnoneedtoconductanymaintenancetorefrigerantpipingiftheunitisundernormalrunning.McQuaydesignershavegivenfullconsiderationtomakeservicingconvenientduringunitdevelopment.Afteropeningservicepanel,bothservicingandmaintenancecanbeeasilycarriedout.Undernormalenvironment,theonlyworkneededischeckingthereturnairwayandcleaningtheheatexchangesurfaceregularlyatmonthorseasonintervaldecidedonoperatingcondition.If the surrounding is very dirty or oily, for maintaining superior performance and sufficient capacity, please ask specializedpersonneltodoregularcleaningofheatexchanger.

MaintenanceForkeepingconsistentperformanceanddurabilitywithsafe,effectiveandlong-lifeoperation,alwaysconductproperandregularmaintenancetotheunit.Forlongperiodofoperationtime,theheatexchangerwillbecomedirtyimpairingitseffectivenessandreducingtheperformanceoftheairconditioner.Consultyourlocaldealeronthecleaningoftheheatexchanger.Nomainmaintenanceorservicingneededfortheinternalwatercircuitexceptthewaterpumpfailure.Itisadvisedthatregularcheckonthestrainershouldbeconductedandreplacethewaterstrainerifthestrainerisdirtyorclogged.Alwayscheckthewaterlevelinthesystem,forthetargetofprotectingthemovingcomponentsinthehydraulickitfromoverheating,excessivewearingandwaterfreeze.Allthechilledwaterinthehydraulicsystemmustbedrainedoutcompletelyduringunitshutdowninwinter,toavoidwaterpipingdamageduetofreeze.

Atemergency(ifyousmellsomethingburning),stopoperationandturnthepowersourceswitchoff,askforyourdealer

25

Common Failure

Whenanymalfunctionisoccurred,immediatelyturntheswitchoffandshutdownoperation,thencontactwithyourdealerforresolution.Forsomefrequentlyoccurredfailure,youcanconductsomehandlingreferringtothesimpletroubleshootingtipsgivenbelow.

SYMPTOMS POSSIBLE CAUSES REMEDIAL ACTION

1.Compressor doesnot start

·Nopowersupply. ·Checkpowersupply.

·Fusesblownorautomaticcircuitbreakdownopen.

·Lookforshortcircuitorgroundedwiresinmotorwindings.Replacefusesandresetcircuitbreakerswhenthefaulthasbeencorrected.Checktightnessandsoundnessofallelectricalconnections.

·Unitisstoppedbecauseasafetyhastripped. ·Determine the typeofsafetyshutdownandcorrect thedefaultbeforetheunitisrestarted.

·Loosewires. ·Checkwireconnectionsandtightenterminalscrews.

·Compressorfaulty. ·Contactlocaldealer.

2.Fan does not work

·Nopowersupply. ·Checkpowersupply.

·Fanmotorfaulty. ·Contactlocaldealer.

3.Air conditioner does work, but insufficient cooling.

·Thermostatsettingtoohigh. ·Resetthermostat

·Condensercoildirty. ·Contactlocaldealer.

·Obstacleblockingairinletoroutletoftheunit. ·Removetheobstacle.

· Insufficient refrigerant in the system. ·Contactlocaldealer.

· Improper water flow rate. ·Contactlocaldealer.

·Waterinthesystemiscontaminated. ·Contactlocaldealer.

Trouble Shooting

Whenothercodeisdisplayed,pleaseconsultspecializedpersonnel.Seedetailedindoorcontrolleroperationincorrespondinginstructionmanual.

Error Code Possible Causes SolutionsE1 Returnwatersensorcontactloose/short Contactwiththedealer,checkandrewireitE2 Supplywatersensorcontactloose/short Contactwiththedealer,checkandrewireitE3 Returnairsensorcontactloose/short Contactwiththedealer,checkandrewireitE� System1defrostingsensorcontactloose/short Contactwiththedealer,checkandrewireitE7 Insufficient water flow Adjust water flow rate, check and clean strainerE8 Waterpumpoverload ContactwiththedealerEA Compressor1overload ContactwiththedealerEC Compressor1highpressurecutout ContactwiththedealerED Compressor1lowpressurecutout ContactwiththedealerEE RAMaccessfailure ContactwiththedealerEF Toolowsupplywatertemperaturewhencooling Contactwiththedealer

26

Notice

InspectionAssoonastheunitisreceived,itshouldbeinspectedforanydamagethatmayhaveoccurredintransit.Ifdamageisevident,itshouldbenotedonthecarrier’sfreightbill.Aseparaterequestforinspectionbythecarrier’sagentshouldbemadeinwritingatonce.Concealed damage must be reported within 15 days of receipt of shipment. Check shipment against the bill oflading to verify that all items were delivered. Any shortages should be noted on the delivery receipt, and a claim filed immediately.

Instruction for use1) Suitableroomtemperaturesetting

Itisadvisabletocomforteveryoneintheconditionedspace,sothetemperaturesettingshouldn’tbetoohighortoolow.Itisrecommendedthatthesettingshouldbewithintherangeoffrom26℃to28℃whencooling,from18℃to23℃whenheating.

2) WinterantifreezeofchilledwatercirculatinginthehydraulicsystemAllthechilledwater inthehydraulicsystemmustbedrainedoutcompletelyduringunitshutdowninwinter,toavoidwaterpipingdamageduetofreeze.

3) Don’tblockairintakeandairdischargewayThese obstacles may cause performance deficiency or shutdown of the air conditioner.

�) AntirustPleasetakeantirustmeasuresandregularlyremoverustwhenusingwaterpipevulnerabletorust toconnectchilledwatersystem

5) Conducting regular chilled water maintenance, this contributes to ensure safe, high efficiency and consistent operation.

6) Only clean water is suitable to fill in system, in addition, install the high efficiency water strainer, which is provided byMcQuay,ontheupstreampipetounitwaterinlet

7) SpecialattentiontowinterantifreezeDuringlongperiodshutdowninwinter,thewaterinsystemmustbecompletelydrainedout.Pleaserefertothediagrambelowandthelabelsstuckonunit.Addproperquantityantifreezersuchasethyleneglycolintothehydraulicsystemiftheunitisnotondutyforshorttime.

27

Exposed View

No. Parts No. Parts

1 Airoutletguard 15 Fan

2 Orifice plate 16 Fanmotor

3 Frontplatesupport 17 Fanmotorsupport

4 Left/rightheatexchangerguard 18 Heatexchangerguard(rear)

5 Leftheatexchangercomponents 19 Left/rightpost

6 Partitioncomponents 20 Rightheatexchangercomponents

7 Left/rightsideplatecomponents 21 Vapor-liquidseparator

8 Frontplatecomponents 22 Plateheatexchanger

9 Controlboxsupport 23 Compressor

10 Controlboxcomponents 24 Pipingfrompumptoheatexchanger

11 Returnpipecomponents 25 Liquidtank

12 Inflow pipe components 26 Pump

13 Leftdoorcomponents 27 Chassiscomponents

14 Rightdoorcomponents

©2007McQuayInternational+1(800)�32-13�2www.mcquay.com

Whileutmostcareistakeninensuringthatalldetailsinthepublicationarecorrectatthetimeofgoingtopress,weareconstantlystrivingforimprovementandthereforereservetherighttoaltermodelspecifications and equipment without notice.Details of specifications and equipment are also subject to change to suit local conditions and requirements andnotallmodelsareavailableineverymarket.

ISO 9001-2000