DCN: 2012-11-222-1 Page 1
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Installation Guide
Model CH-THSTAT-W
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 1 stage heating and cooling
o 2 stage heating and cooling
• Heat Pump systems:
o 1 stage heating and cooling
o 2 stage heating and cooling
o 2
nd
or 3
rd
stage Auxiliary heating (heat strips)
• 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
* 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.
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