Proliphix IMT350c Installation Manual page 10

Installing and Wiring the Thermostat
Refer to the labels you placed on the wires when you removed the existing thermostat.
See page
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
Note
scheme to control your Heat Pump. Refer to your Heat Pump manual for wiring
H
details.
You must know the type of Reversing Valve (reverse for cooling or reverse for
heating) in your heat pump. Refer to your Heat Pump manual for more
information.
Table 2
and dual-stage Fuel Burner and Heat Pump applications.
Table 2 Terminal Conversion Chart
HVAC Terminal
a
C
RH
RC
W1
b
W2
c
Y1
G
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.
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.
c
Provides stage 1 heat or cool depending on the activation of the RVS.
6 Proliphix Internet Managed Thermostat (IMT) 350c/350w Installation Guide, Release 1.0
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3.
lists the standard HVAC terminal label required to support the single-stage
Single Stage Fuel Burner
24VAC common
24VAC hot
24VAC hot
Heat
not used
Cool
Fan
Single Stage Heat Pump
24VAC common
24VAC hot
24VAC hot
Auxiliary Heat
RVS O/B
Compressor
Fan
Part No. 600-03000-350, Rev. 1