5 69-0939—1
STEP 1. PREPARE FOR INSTALLATION
❑ Check the compatibility chart to make sure this thermostat is compatible with your system. If
not, return to retailer. For specialty thermostat information, call Honeywell Customer
Assistance, toll-free 1-800-468-1502.
Compatibility Chart.
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Not compatible with any 120/240 volt circuit.
Compatible with 2-wire Honeywell and Taco zone valves. Not compatible with 3-wire zone
valves or 2-wire White Rodgers no. 1361 zone valves.
System Type
Compatible
with
CT3600
Gas—Standing Pilot Yes
Gas—Electronic Ignition Yes
Gas-Fired Boilers Yes
Gas—Millivolt No
Oil-Fired Boilers Yes
Oil-Fired Furnace Yes
Electric Furnace Yes
System Type
Compatible
with
CT3600
Electric Air Conditioning Yes
Baseboard Electric
(120/240 line volt)
No
Single Stage Heat Pump Yes
Multistage Heat
Pumps/Multistage
Equipment
No