User Guide

5
1. The Heat Pump terminals accept the 24 VAC signal from the reversing
valve holding coil. Make a parallel connection from the reversing valve to
the HP terminals.
Note: Do not apply a voltage higher than 30 VAC
to the HP terminals.
2. If the Heat Pump is in the Heating mode and the reversing
valve is energized, then the Heat Pump Select jumper must
be in the Default (N.O.) position.
3. If the Heat Pump is in the Heating mode and the reversing
valve is not energized, then the Heat Pump Select jumper
must be in the N.C. position.
Connections for Heat Pump Systems
N.O.
N.C.
Temperature
Probe
24 VAC Connect Parallel to
24 VAC Reversing Valve
Additional
Probes
Probe S1
HP
Heat Pump
Select Jumper
Default Position