1 69-0733B—1
Table Of Contents
STEP 1 Prepare For Installation..................................................................................................... 2
STEP 2 Remove Old Thermostat ................................................................................................... 4
STEP 3 Before You Program.......................................................................................................... 6
Install the Batteries .................................................................................................................... 6
Adaptive Intelligent Recovery™ Selection .............................................................................. 7
STEP 4 Program The Thermostat .................................................................................................. 9
STEP 5 Mount Thermostat Wallplate........................................................................................... 16
STEP 6 Adjust System On-Length, Clock Display, as Required .............................................. 18
STEP 7 Adjust Fan Operation Switch, as Required ................................................................... 20
STEP 8 Wire Wallplate Terminals ................................................................................................ 21
STEP 9 Mount The Thermostat .................................................................................................... 25
STEP 10 Check Thermostat Operation After Programming and Installing ............................. 26
STEP 11 Set the Fan and System Switches................................................................................ 29
Troubleshooting Guide................................................................................................................. 30
Index............................................................................................................................................... 34
Limited One-Year Warranty.......................................................................................................... 36
2 69-0733B—1
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STEP 1 Prepare For Installation
■ 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 CT3400
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
Electric Air Conditioning Yes
Baseboard Electric (120/240 line volt) No
Heat Pumps/Multistage Equipment No
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 valves.
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