CT200-G1 User Guide
Connecting Wires
See section “Wiring Diagrams” to identify the wiring diagram for your HVAC sysm. If necessary, contact
customer support for help.
1. Connect a labeled wire only to a matching lettered terminal.
2. Press the lever next to the terminal letter.
3. Insert the wire in the terminal as far as it will go.
4. Release the lever; the wire should be secure and not pull free easily.
Note:
The C-wire is optional but preferred for all installations.
The Thermostat can be externally powered with a power source rated from 12V to 24V, AC or DC, at 100ma
or greater. If used, connect to the C and RH terminals (no polarity).
The 24VAC “C” wire is the other side of the 24VAC heating transformer and can be found where the other
thermostat wires connect at the wall or at the furnace. Do not use the common or ground side of the line
voltage.
The Thermostat runs on 4 AA alkaline batteries, the C wire (if available), or both batteries and the C-wire.
If you do not have a C wire, you can run a new wire from the HVAC or use a standard 12-24V [AC or DC]
wall transformer.
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Chapter 1. Installation Guide
Summary of Contents for CT200-G1
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