York ZF150 Installation Manual

Also see for Predator ZF078: Technical guide

518674-YIM-C-0610Johnson Controls Unitary Products 19Thermostat Wiring (Not applicable to units with VFD)The thermostat should be located on an inside wallapproximately 56 inch above the floor where it will not besubject to drafts, sun exposure or heat from electrical fixtures orappliances. Follow the manufacturer's instructions enclosedwith thermostat for general installation procedure. Seven (7)color-coded, insulated wires should be used to connect thethermostat to the unit. Refer to Table 7 for control wire sizingand maximum length.Figure 23: Typical Electronic Thermostat Field WiringFigure 24: Typical Field Wiring 24 Volt ThermostatTable 7: Control Wire SizesWire Size Maximum Length 11. From the unit to the thermostat and back to the unit.18 AWG 150 Feet208/230-3-60 and 380/415-3-50 units controltransformers are factory wired for 230v and 415v powersupply respectively. Change tap on transformer for 208-3-60 or 380-3-50 operation. See unit wiring diagram.W2RCRHY1Y2W1GCX1X3X4A1A2TTW2Y1Y2W1GCOCCXR2TO REMOTE SENSOR2ET04701324 IF USED24 VoltTransformerTHERMOSTAT1TERMINALS UNIT TERMINALSSTRIP TB11 Electronic programmable Thermostat 2ET0770010024 (includes subbase).2 Terminals A1 and A2 provide a relay output to close the outdoor economizerdampers when the thermostat switches to the set-back position.OCCW1W2Y1GY2XRSDCREMOTEMIN POSW1W2Y1GY2CRHRCUNIT CONTROLBOARDT-STAT