Wiring Diagrams; Digital Control Board With Standby Power - McQuay PDAA Installation & Maintenance Data

Wiring Diagrams

Digital Control Board With Standby Power

The standby power connections, L1 STBY and L2 STBY are meant to run
the indoor motor at a separate voltage from the other motors, compressor
and outdoor motor. When used as such, the jumpers, JH1 and JH2, must
be cut. This renders L1 & L2 and L1 STBY and L2 STBY isolated from
each other.
If there is no need to run the motors at a separate voltage the L1 = L1
STBY and L2 = L2 STBY. Therefore one voltage is used to run all motors.
If the jumpers are accidentally cut, then the connections can be
spliced to substitute for the missing jumpers.
Legend
DM = Damper Motor
HYV = Hydronic Valve
CM = Compressor Motor
IFM = Indoor Fan Motor
Outdoor Fan Motor
OFM =
Heat Fan Lockout Sensor
HFLO =
Outdoor Coil Sensor
OCS =
Outdoor Air Sensor
OAS =
Indoor Coil Sensor
ICS =
Indoor Air Sensor
IAS =
LUI = Local User Interface
REV = Reversing Valve
IR Receiver Board (AP7810)
IR =
C1 = Indoor Motor Capacitor
Outdoor Motor Capacitor
C2 =
C3 = Compressor Capacitor
MP = Motor Protector
Note: The gray tinted areas in the wiring diagram; are options available only with the premium control board.
For the latest drawing version refer to the wiring diagram located on the inside of the controls access panel of the unit.
Table A
Drawing No. 668001506
IM 934-2 Applied PDAA/PDHA / Page 37 of 44