McQuay MWM Service Manual page 35

MCQUAY Service Guide Book
SB125 Heatpump with Auxiliary Heater
To convert SB125 heatpump PCB to auxiliary
heater application, only need to add one heater
relay as shown below:
Re
SB125 Heatpump with Auxiliary Heater
1. Place the JM Relay (240V/20A) on the
RY_HTR location
2. Solder all the relay pins.
34
Controller Configuration
RY_HTR