Beta Draft Confidential
6 Proliphix Internet Managed Thermostat (IMT) Installation Guide
Part No. 600-03100-000, Rev. 4
Installing and Wiring the Thermostat
Wiring the Base Plate Terminals
This section describes how to wire the base plate terminals. Use the instructions in this
section and refer to:
Table 3 and Figure 3 on page 7 to wire the IMT base plate terminals for Fuel
Burner HVAC. A Fuel Burner typically burns fossil fuel like oil or gas and does
not have a wire used as a reversing valve.
Table 3 and Figure 4 on page 8 to wire the IMT base plate terminals for Heat
Pump HVAC. A Heat Pump configuration always has a wire used to control a
reversing valve.
Refer to the labels you placed on the wires when you removed the existing thermostat.
See page 1.
Table 3 lists the standard HVAC terminal label required to support the single-stage
and dual-stage Fuel Burner and Heat Pump applications.
H
Some newer Heat Pumps use traditional Fuel Burner wiring schemes without a
Reversing Valve (RV). Therefore, you may have to use a Fuel Burner wiring scheme
to control your Heat Pump. Refer to your Heat Pump manual for wiring details.
You must know the type of Reversing Valve in your heat pump. Refer to your Heat
Pump manual for more information.
Table 3 Terminal Conversion Chart
HVAC
Terminal
Single Stage
Fuel Burner
Dual Stage Fuel
Burner
Single Stage
Heat Pump
Dual Stage
Heat Pump
C
a
a
The 24VAC common must be in the same AC phase as the 24VAC source (RH or RC). If the
thermostat is connected to RH only, or RH and RC then C must be the RH common. If the
thermostat is connected to RC only then C must be the RC common.
24VAC common 24VAC common 24VAC common 24VAC common
RH 24VAC hot 24VAC hot 24VAC hot 24VAC hot
RC 24VAC hot 24VAC hot 24VAC hot 24VAC hot
W1 Heat 1st stage Heat Auxiliary Heat Auxiliary Heat
W2
b
b
The RVS is either activate for heat (B terminal) or activate for cool (O terminal). You can program
this function on the relay output through the web interface and the LCD screens. Consult your
HVAC installer about the RVS type for your heat pump.
not used 2nd stage Heat RVS O/B RVS O/B
Y1
c
c
Provides stage 1 heat or cool depending on the activation of the RVS.
Cool 1st stage Cool 1st stage
Compressor
1st stage
Compressor
Y2
d
d
Provides stage 2 heat or cool depending on the activation of the RVS.
not used 2nd stage Cool not used 2nd stage
Compressor
GFan Fan Fan Fan
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