Install Instructions

© Copyright 2005 PECO, Inc. All Rights Reserved P/N 70324 3220-2250 Rev0 Page 1
TA156/TB156/TE156
Installation Instructions
•UseCopperwireonly,insulateorwire
nutallunusedleads.
•Anywiring,includingtheremoteprobe,
maycarrythefulloperatingvoltageof
thethermostat.
Voltage
Rating
Inductive
FLA LRA
Resistive
Amps
Pilot
Duty
Thermostatic
Switching
24 VAC
120VAC
240VAC
277VAC
N.A. N.A. N.A. 24 VA 10 VA
5.8 34.8 6.0 125 VA 20VA
20VA
20VA
125 VA
125 VA
2.9 17.4 5.0
2.4 14.4 4.2
FAN AND SYSTEM SWITCHES
1.TheT156controlfeaturesasnapinplacepanelmountingcover.The
coverwillfacilitatearangeofpanelthicknessfrom.020”to.065”.
ThepanelopeningfortheT156installationshouldbe4.52±.015”by
2.770±.015”.
2.Dependantuponspecicinstallationcongurationthewiringmaybe
donepriortoorafterinstallationoftheT156intotheenclosure.The
installershoulddeterminethispriortoinstallation.
3.Checkout:Afterwiringandinstallationarecomplete,energizethe
systemandchecktheoperation.Adjustthethermostatasnecessary
tocompleteatleastonecycle.Besurethethermostatandallother
equipmentarefunctioningcorrectly.
WIRE COLOR   FUNCTION
WHITEWITHORANGESTRIPE FANSPEED,HIGH
WHITEWITHREDSTRIPE  FANSPEED,MEDIUM
WHITEWITHBROWNSTRIPE  FANSPEED,LOW
RED    HEATOUTPUT
BLUE    COOLOUTPUT
BLACK    L1(HOT)
YELLOW    L2orNEUTRAL
BROWN    REMOTEPROBE(2 
    LEADS,NOPOLARITY)
PURPLE    FANSUPPLY
ORANGE    SWITCHEDPOWER
TemperatureRange:50°F-90°F
TA156:AHEAT-OFF-COOLsystemswitchmanuallyselectsheating
orcoolingmode.IntheHEATposition,onlytheheatoutputcycles
withdemand.IntheCOOLposition,onlythecooloutputcycleswith
demand.IntheOFFpositionheatingandcoolingoutputsareoff.Units
withatwopositionsystemswitchorwithoutasystemswitchmustusea
loadtransferswitchwhenbothheatingandcoolingoutputsareusedto
preventcontrolfailureandequipmentdamagecausedbydirectcycling
betweenloads.
TB156:AnON-OFFsystemswitchenablesauto-changeoverofheating
andcoolingmode.IntheONpositionthethermostatactivatesheating
orcoolingoutputsdependantupontherelationshipbetweentheset
pointandtheambienttemperature.Heatontocoolondeadbandis
4°F.IntheOFFposition,heatingandcoolingoutputsareoff.Units
withoutasystemswitchcycledirectlybetweenheatingandcoolingwith
a4°Fdeadband.
TE156:TheTE156actasaswitchingdeviceandhasnothermostat
function.Byuserswitchselection,inputpowerisswitchedto
correspondingoutputs.StandardswitchcongurationsisON-OFF.Inthe
OFFpositionalloutputsareOFF.IntheONpositionpowerisswitched
totheswitchedpoweroutput.
Onunitsthathavefanswitchingtheswitchedpoweroutputmaybe
internallywiredtothefansupply.Dependinguponcongurationthe
usermayneedtomakethisconnection.
FAN:Someunitshaveaswitchformanualselectionoffanspeed.Fan
operationmaybeinternallywiredforfancontinuousoperationora
fansupplyconnectionmaybeavailable.Wheninternallywiredforfan
continuousoperation,thefanwillbeoffwhenthesystemswitchisoff.
Onunitswithafansupplylead,thefanoperationisdependantupon
externalconnections.Dependantupontheseconnectionsthefanmay
notbeoffwiththesystemswitchintheoffposition.
dEsCRIpTION
WIRINg CONNECTIONs
FaN & sysTEm sWITChEs
ThERmOsTaT OpERaTION
•READTHESEINSTRUCTIONSCAREFULLYBEFOREATTEMPTINGTO
INSTALL,OPERATEORSERVICETHISTHERMOSTAT.
•Failuretoobservesafetyinformationandcomplywithinstructionscould
resultinPERSONALINJURY,DEATHAND/ORPROPERTYDAMAGE.
•Toavoidelectricalshockordamagetoequipment,disconnectpowerbefore
installingorservicing.
•Toavoidelectricshockordamagetoequipment,useonlywiringwithinsula-
tionratedforfullthermostatoperatingvoltage.
•Toavoidpotentialfireand/orexplosiondonotuseinpotentiallyflammableor
explosiveatmospheres.
•Retaintheseinstructionsforfuturereference.Thisproduct,wheninstalled,
willbepartofanengineeredsystemwhosespecificationsandperformance
characteristicsarenotdesignedorcontrolledbyPECO,Inc.Youmust
reviewyourapplicationandnationalandlocalcodestoassurethatyour
installationwillbefunctionalandsafe.
WaRNINg
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CaUTION
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