Proliphix IMT Series Installation Manual page 10

Installing and Wiring the Thermostat
Figure 2
activate for heat/cool, connecting to an IMT base plate.
The second compressor wire is not present in a single-stage heat pump.
Note
Figure 2 Dual-Stage Heat Pump HVAC Connections
C
Common
The wiring colors shown above are examples of commonly used colors and may
differ depending on the HVAC wiring that is used.
Note
6
Beta Draft Confidential
shows an example of a dual-stage Heat Pump HVAC system, with reverse
RH
W1
Auxiliary Heat
24VAC
Source
Proliphix Internet Managed Thermostat (IMT) Installation Guide, Release 1.0
IMT Base Plate
Y1
W2
Reverse for
1st stage
Heat/Cool
Compressor
(Dual/Stage)
HVAC System
Part No. 600-03100-000, Rev. 2
Y2 G
2nd stage
Fan
Fan
Compressor