Technical Guide

505428-YTG-R-1114
Johnson Controls Unitary Products 119
Typical Field Wiring Diagram - NC090 Evaporator Unit with PC090 Heat Pump
R C
Y1
G W1 W2
THERMOSTAT
SINGLE STAGE COOLING
TWO STAGE HEATING
NOTE: Do not use a heat pump thermostat.
NOTE: Liquid line solenoid is not included or required
on 7.5 Ton Single Stage Units.