ICM Controls ICM330 General instructions

Installation of the ICM330 shall be performed by trained technicians only. Adhere to all local and national electric codes.
Disconnect all power to the system before making any connections.
Installation, Operation & Application Guide
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Caution!
• Line voltage:120,208,240,277,and480VAC
• Control voltage:18-30VAC
• Current:4ampsmaximum
• Frequency:50-60Hz
• Operatingtemperature:-40ºFto+176ºF(-40°Cto+75°C)
• Probes:
–Temperature:Thermistor,10Kohmat77°F(25°C)
–Pressure:ICM380(orderedseparately)
• Heatpumpoverride:24VACN.C.orN.O.
• Weight:12ounces(341grams)
Note:TheICM330shouldbeappliedtomotorsandequipmentthathavebeendesignatedbytheirrespectivemanufacturersascapableofbeingspeedcontrolled.
• Mounting:
 – Surfacemountusing(2)#8screws
 – ItisrecommendedthattheICM330bemountedawayfromthecondenserexhaustairinordertomaintainloweroperatingtemperatures
Specifications
Example
1.Onlyoneprobetypecanbeusedatatime,temperatureORpressure.
2.AtypicalinstallationisshowninAppendixsection.ThetemperatureprobecanbeattachedtotheU-bend.Usetheprovidedthermo-tapetosecuretheprobetotheplaceof
attachment.
3.Whenusingapressureprobe,installitonthedischargelinetransducertting.
4.AtemperatureorpressureprobeisconnectedtoICM330asshownintherespectivewiringdiagrambelow.
Installing and Connecting the Probe
LIAF069
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
ONE-YEAR LIMITED WARRANTY
TheSellerwarrantsitsproductsagainstdefectsinmaterialorworkmanshipforaperiodofone(1)
yearfromthedateofmanufacture.TheliabilityoftheSellerislimited,atitsoption,torepair,replace
orissueanon-casecreditforthepurchasepricesofthegoodswhichareprovidedtobedefective.
Thewarrantyandremediessetforthhereindonotapplytoanygoodsorpartsthereofwhichhave
beensubjectedtomisuseincludinganyuseorapplicationinviolationoftheSeller’sinstructions,
neglect,tampering,improperstorage,incorrectinstallationorservicingnotperformedbytheSeller.
InordertopermittheSellertoproperlyadministerthewarranty,theBuyershall:1)NotifytheSeller
promptlyofanyclaim,submittingdatecodeinformationoranyotherpertinentdataasrequestedby
theSeller.2)PermittheSellertoinspectandtesttheproductclaimedtobedefective.Itemsclaimed
tobedefectiveandaredeterminedbySellertobenon-defectivearesubjecttoa$30.00perhour
inspectionfee.ThiswarrantyconstitutestheSeller’ssoleliabilityhereunderandisinlieuofanyother
warrantyexpressed,impliedorstatutory.Unlessotherwisestatedinwriting,Sellermakesnowarranty
thatthegoodsdepictedordescribedhereinaretforanyparticularpurpose.
ICM330
Head Pressure Control with
Optional Heat Pump Override
Regulates head pressure via temperature or pressure input
TemperatureProbe
BLUE
WHITE
GREEN
RED
BLACK
PRESSURE TRANSDUCER
1. Removepowerfromsystem.
2. FieldinstallawirefromLine 1wireto480 VACterminal.
3. CutLine 2wire;afxmotorsidetoMotor 2terminalandlinesidetoLine 2terminal.
4. Make24VAC,probeandHPconnections.
5. Verifywiringiscorrect.
6. Powerupsystemandcheckoperation.
Connections for ICM330 at 120/208/240/277 VAC
1. Removepowerfromsystem.
2. FieldinstallawirefromLine 1wireto120/280 VACterminal.
3. CutLine 2wire;afxmotorsidetoMotor 2terminalandlinesidetoLine 2terminal.
4. Make24VAC,probeandHPconnections.
5. Verifywiringiscorrect.
6. Powerupsystemandcheckoperation.
Connections for ICM330 at 480 VAC
FieldInstalledWire
Field
Installed
Wire

Mode of Operations
Whenusingatemperatureprobe,thecontrolwillmaintaincondensertemperaturebetween7°Faboveand7°FbelowdialedTemperatureSetpoint.ThedialTemperatureSetpointrangeis70°Fto140°F.
Whenusingapressureprobe,thecontrolwillmaintaincondenserpressurebetween20psigaboveand20psigbelowdialedPressureSetpoint.ThedialPressureSetpointrangeis35psigto465psig.
Theisnocorrelationbetweendialtemperatureandpressurescalesonthecontrol.
Whenthemotorstartsrunningitwillhardstartforthelengthoftimedictatedbythehardstartdialsetting.Afterthehardstarttimehaselapsed,themotorspeediscontrolledbytheprobereading,temperatureor
pressure.Thegreenlightturnsonwhenthemotorrunsatfullspeed.
Asthesensedtemperature/pressuredecreases,theoutputvoltagedecreases.Theyellowlightturnsonduringmotorvariablespeed.Theoutputvoltagemaydecreasetotheminimumvoltagedictatedbythe
cutoutspeeddial.Astemperature/pressuredecreasesfurther,theoutputvoltagegoestozerovolts.Theyellowlightturnsoff.
1.Fornon-heatpumpapplications,theheatpumpselectjumpermustbeintheDefault(N.O.)position,andtheHPterminalsmust
beleftunconnected.
2.SettheCutoutSpeedandtheHardStartTimetotheappropriatepositionsforthetypeofmotoryouhave(seebelow).
Connections for Air Conditioning Only
1.TheHeatPumpterminalsacceptthe24VACsignalfromthereversingvalveholdingcoil.Makeaparallelconnectionfromthereversing
valvetotheHEAT PUMPterminals.
 Note:Do not apply a voltage higher than 30 VAC to the HEAT PUMP terminals.
2.IftheHeatPumpisintheHeatingmodeandthereversingvalveisenergized,thentheHeatPumpSelectjumper
mustbeintheDefault(N.O.)position.
3.IftheHeatPumpisintheHeatingmodeandthereversingvalveisnotenergized,thentheHeatPumpSelect
jumpermustbeintheN.C.position.
Connections for Heat Pump Systems
N.O.
N.C.
Thecutoutspeeddialadjuststhemotorvoltagerange.Setthecutoutvoltagedialaccordingtothetypeofmotoryouhave.
Sleeve Bearing Motors: Setthecutoutspeeddialtothemiddleofthesleevebearingrange.Inthisrange,themotorcanrundownapproximately40-50%of
thefulllinevoltage,whichallowssufcientRPMsforcoolingandlubrication.
CAUTION!:  Withsleevebearingmotors,itisimportantnottoadjustoutsidethesleevebearingrangeorbearingfailuremayresult.
Ball Bearing Motors:SetthecutoutspeeddialtotheMINpositionintheballbearingrange.Thispositionoffersthegreatestrangeofspeedcontrol.Atthe
MINsettingthemotorcanrundowntoapproximately20-30%ofthefulllinevoltage.
Note:Afterstartingattherecommendedsettingsforeithersleeveorballbearingmotors,youcannetunethecutoutspeedtoachievethedesiredresults.
Setting the Cutout Speed
DuringtheHardStartmode,fullvoltageisappliedtothemotorduringstartuptoovercomewindmillingandtolubricatethebearings.
Thepositionofthehardstartdialdeterminesthetimeperiodofthehardstartmode.Thedialcanbeadjustedbetween0.2secondsandapproximately4seconds.
Setthehardstartdialaccordingtothetypeofmotoryouhave.Ifyouhaveaball bearing motor,setthehardstartdialtotheMINposition.Ifyouhaveasleeve
bearing motor,setthehardstartdialtothemiddleofthesleevebearingrange.
Afteryoubeginattherecommendedsetting,youcannetunethehardstarttimewithintherecommendedrangeforthetypeofmotoryouhave.
Itisrecommendedthatyouusetheminimumpossiblehardstarttimetoavoidblowingtoomuchcoldairoverthecondenser.
Thehardstartmodeappliesfullvoltagetothemotorforthesettimeperiod.Afterwards,themotorspeedisdictatedbythetemperature/pressuresensor.
Setting the Hard Start Speed
Condenser
Sensor
Sensor
ReversingValvefor
HeatPump
T-Stat
Control
Transformer
Terminaltobe
usedfor480VAC
ICM330 Typical InstallationAppendix A
°C °F Resistance (KΩ)
0° 32° 32.7
5° 41° 25.4
10° 50° 19.9
15° 59° 15.7
20° 68° 12.5
25° 77° 10.0
30° 86° 8.1
35° 95° 6.5
40° 104° 5.3
45° 113° 4.4
50° 122° 3.6
Temperaturevs.ProbeResistance
Appendix B
Pressure (psig) Voltage (Vdc)
0 0.5
50 0.9
100 1.3
150 1.7
200 2.1
250 2.5
300 2.9
350 3.3
400 3.7
450 4.1
500 4.5
Pressurevs.Voltage
Line1
Line2
LineVoltage Motor1
Motor2
Symptom Problem
Unitfailstostart UsinganACvoltmeter,measurethevoltagebetweenthe24VACterminals.Itshouldreadapproximately24volts.
MeasurethelinevoltagebetweenLINE1andLINE2toconrmthatlinevoltageispresent.Checkwiringtothefanmotor.
Iflightsareashingalternativelythennoprobeisconnectedormalfunctioningprobe.
Whenusingatemperatureprobe,disconnectitanduseanohmmetertomeasuretheresistancebetweenthewires.ItshouldmatchthechartinAppendixA.
Whenusingapressureprobe,withpowerappliedtothecontroluseavoltmetertomeasurevoltsDCbetweenGNDandVout.Thereadingshouldbeaccordingtothechartin
AppendixB.
Thefuseisblownand/orsignsof
damageontheunit
Theunithasbeenmiswiredandmaybepermanentlydamaged.
ThefancyclesfromONtoOFF
withlittleornospeedmodulation
Reducehardstartstettingtominimumneededtoacceleratethefanmotor.Excessivehardstartcauseslargepressuredropsbyrunningtoomuchcoldairoverthecondenser.
Reducecutoutsettingtominimumneededforthemotorinuse.
Shouldthecyclingpersist,relocatethetemperatureprobeupthecondensertoincreasesensitivitytotemperaturechangeand/oradjustthetemperaturesetpoint.
Thehighpressureswitchtripsoff See“Unitfailstostart”above
Checkthesetpointandreduceitifneeded
Troubleshooting