Clare Controls CH-THSTAT-W Installation Manual

This thermostat is compatible with most HVAC systems, including the following:
24VAC systems Note: requires both the 24R and 24C (common) wires
•
Standard gas/oil/electric heating systems
•
o
o
Heat Pump systems:
•
o
o
o
Do NOT use for line voltage controls (120/240VAC)
•
Stop! Before removing your existing thermostat be sure to label the wires with the wiring
labels included. Label the wires as they were connected to the old thermostat terminals
and record them below.
We strongly recommend you take a picture of your existing thermostat wiring
connections. This will enable you to reconnect your old thermostat if you encounter a
problem installing the CH-THSTAT-W and will assist in trouble shooting the installation, if
needed.
CAUTION: The typical wire colors noted below may be different from your installation.
Standard HVAC System Wiring
Thermostat Meaning
Terminal Marking
C 24VAC Common
R (or RH) 24VAC Return (heating system)
G Fan
W or W1 Heat stage 1
Y or Y1 Cool stage 1
W2 Heat stage 2
Y2 Cool stage 2
Heat Pump HVAC System Wiring
Thermostat
Terminal Marking
C
R
G
W or W1
Y or Y1
O (or B*)
Y2
* if you have a terminal marked "B" with a brown wire attached to it, that means you have a changeover (C/O) with heating
type heat pump system. Be sure to set the change over type in the Installer Settings menu to C/O Type: w/Heat.
Otherwise leave it set to w/Cool.
DCN: 2012-11-222-1
™

Installation Guide

Model CH-THSTAT-W
1 stage heating and cooling
2 stage heating and cooling
1 stage heating and cooling
2 stage heating and cooling
nd rd
2 or 3 stage Auxiliary heating (heat strips)
Meaning
24VAC Common
24VAC Return
Fan
Aux Heat
Compressor stage 1
Change Over Valve
Compressor stage 2
Typical Wire
Color
Blue
Red
Green
White
Yellow
Orange
Black
Typical Wire Record the old thermostat wire color connected
Color to this
terminal here
Blue
Red
Green
White
Yellow
Orange
(brown*)
Black
Record the old thermostat wire color
connected to this terminal here
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