York K3EU120, K2EU060, K4EU090, K3EU180 manual Unitswithelectricheataccessory

036-21300-002-A-0905

UNITSWITHELECTRICHEATACCESSORY

TERMINALBLOCK4TB

24-VOLTCONTROLWIRING ONBLOWERUNIT

R		R
Y1		Y
Y2	1	O
W1		66
W2	2	60

1

TO

COND.

UNIT

NOTES:

1Onlyrequiredfor2-stagecooling.**

2Notrequiredon10KW heaters(onlyone-stageheating). 3Thisthermostatandsub-basemustbeusedwhenever ablowerunitisequippedwithanelectricheataccessory.

	G	53
		G
TERMINALSON
THERMOSTAT6TH047015243
WITHSUB-BASE2TB04700324		B

JUMPER

Anoutdoorthermostatcan bewiredbetweenterminals 53and60toprovideaddi- tionalstagingon36and 72KW heaters.

Thefieldwiringconnectedtothesedummy terminalson4TBcanberouteddirectlyfrom thecondensingunittothetermostatifdesired.

NOTE:TerminalRon4TBisnotadummyterminalon KEU060unitsbecausetheseunitsincludeatransform- erthatpowersthecontrolcircuit.Onlargersystems, thistransformerissuppliedwiththecondensingunit.

*WireRon4TBterminalblockisnotrequiredon5tonunit. **OnlyappliestoHCA180/KEU180systemswhentheHCA180is equippedwiththecapacityreductionaccessory.Two115-volt wireswilalsoberequiredfortheliquidlinesolenoidvalve thatwilbefurnishedwiththecapacityreductionaccessory.

RefertoForm550.13N1.5foradditionalinformationon thisaccessory.

FIGURE 13 - FIELD WIRING FOR UNITS WITH ELECTRIC HEAT

Unitary Products Group 25