Prepare For Installation
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Check Table 1 to make sure this thermostat is compatible with your system. If not, return to
retailer. For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.
TABLE 1—COMPATIBILITY CHART.
System Type
Compatible With CT3200
Gas—Standing Pilot
Yes
Gas—Electronic Ignition
Yes
Gas-Fired Boilers
Yes
1
Gas—Millivolt
No
Oil-Fired Boilers
Yes
1
Oil-Fired Furnace
Yes
Electric Furnace
Yes
Electric Air Conditioning
Yes
Baseboard Electric (120/240 Line Volt)
No
Heat Pumps/Multistage Equipment
No
3
2
Not compatible with any 120/240 volt circuit.
Will not work efficiently on steam or gravity systems.
1
Compatible with 2-wire Honeywell zone valves. Isolating relay required for 3-wire thermo-
stats for zone valves. Not compatible with 2-wire White-Rodgers #1361 valves.
CROSS-RECESSED
SCREWDRIVER
HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED TO
DRILL HOLES IN WALL
WIRE CUTTER/STRIPPER OR SHARP
KNIFE, IF NEEDED TO STRIP WIRES
MASKING TAPE, IF NEEDED
TO LABEL WIRES AS THEY
ARE DISCONNECTED FROM
OLD THERMOSTAT
SPIRIT LEVEL, IF NEEDED TO LEVEL
THERMOSTAT FOR APPEARANCE
M 878
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Acquire tools and items as needed (below). Also purchase two AA alkaline batteries; we
recommend Energizer batteries
STEP 1
