Technical Guide

505428-YTG-O-0413
120 Johnson Controls Unitary Products
Typical Field Wiring Diagram - ND180 thru 240 Evaporator Unit with PD180 thru 240 Heat Pump
R C
Y1
G W1 W2
Y2
THERMOSTAT
TWO STAGE COOLING
TWO STAGE HEATING
NOTE: Do not use a heat pump thermostat.
NOTE: Liquid line solenoid is not included or required
on any 4 pipe units.