Conversion Configuration; Auxiliary Heater Conversion - McQuay MWM Service Manual

MCQUAY Service Guide Book

6.0 CONVERSION CONFIGURATION

6.1 Auxiliary Heater Conversion

U1.5 Heatpump with Auxiliary Heater
To convert the standard U1.5 heatpump PCB to
auxiliary heater application,
components need to be added onto the PCB:
Transistor
(Q3)
the following
Board U1.5 Heatpump with Auxiliary Heater
33
1. Heater relay (240V/20A)
2. Transistor, 2SC945
3. Diode, IN4003
Heater Relay
(RLY 8)
Diode (D17)
Controller Configuration