Honeywell CT3455- Manual

Page 2 - Recycling Thermostat; not; switch in a thermostat.

TOTAL COMFORT TEMPERATURE MANAGEMENTWITH ADAPTIVE INTELLIGENT RECOVERY™ Congratulations! You made a smart choice when you purchased your new Honeywell Thermostat.It’s the smart thermostat that: ■ Keeps you comfortable by automatically calculating exactly when the furnace or air condi- tioning should...

Page 3 - System Type; Table Of Contents

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 CT3400/3455 Gas—Sta...

Page 5 - STEP 3; Install the Batteries; Three AA alkaline batteries are

5 69-0733—3 which programmable thermostats will work withyour system, call Honeywell Customer Assis-tance at 1-800-468-1502. Three thermostat wires?If you have three wires for heating only and canoperate the fan using the fan ON switch, thisthermostat will work with your system. However,some hot wat...

Page 6 - More about Adaptive Intelligent RecoveryTM...

7 69-0733—3 IMPORTANT: Although the thermostat has a low battery indicator, replace the batteriesonce a year to prevent leakage and to preventthe thermostat and heating/cooling systemfrom shutting down due to lack of batterypower. As a precaution when leaving home for longerthan a month, change batt...

Page 7 - DAYTIME is the time period you can set for an; PROGRAMMING

STEP 4 Program The Thermostat work or school. (This will be a higher tem-perature during heating season, or a lowertemperature during cooling season.) DAYTIME is the time period you can set for an energy-saving temperature while you areaway at work or school. (This will be a lowertemperature during ...

Page 10 - INSTALLATION; STEP 5

For operating or making changes, use this guide. Temporarily Change temperature for current period only— ; TEMPORARY indicator shows on display, and cancels itself at next scheduled change. To cancel sooner, you maypress . Hold a temperature indefinitely (such as on vacation)— , Hold appears on disp...

Page 12 - Adjust Fan Operation Switch, As Required; The thermostat fan operation switch is fac-; When using a high efficiency

19 69-0733—3 SYSTEM GRAVITY AIR/WATER HOT WATER OR HIGH EFFICIENCY(90%+AFUE) GAS/OIL WARM AIR ELECTRIC WARM AIR 1A OUT 1 TURN OUT 1 TURN OUT 1 TURN 1B IN (FACTORY SETTING) IN IN DISPLAY 2A 2B 12 hr./ °F OUT 24 hr./ °F (FACTORY SETTING) IN M 618A 1A 1B 2A 2B OUT OUT OUT IN IN IN 24 hr./ °C 12 hr./ °C...

Page 13 - Wire Wallplate Terminals; Loosen the terminal screws and slip each

21 69-0733—3 NOTE: All wiring must comply with local codes and ordinances. If unsure about householdwiring procedures, call your local heating/airconditioning contractor. Refer to masking tape labels you placed onwires when you removed your old thermostat. ■ ■ Match the letter of your old thermostat...

Page 14 - Mount The Thermostat

INSTALLATION 24 69-0733—3 23 69-0733—3 STEP 9 Mount The Thermostat A. ENGAGE TABS BETWEENTOP OF THERMOSTATAND WALLPLATE MON HEAT ON DAYTIME AM B. PRESSLOWER EDGEOF CASE TOLATCH MON HEAT ON DAYTIME AM Time Temp Current Setting Set Present Day Time Hold Temp Run Program Day Morning Night Daytime Eveni...

Page 15 - not check heating system operation; instructions for further information.

25 69-0733—3 26 69-0733-3 STEP 10 Check Thermostat Operation After ProgrammingAnd Installing HEATINGDo not check heating system operation by jumpering thermostat terminals atthe primary control, such as the gasvalve, zone valve, oil burner control.This will damage the thermostat. In-stead, you could...

Page 16 - Set The Fan And System Switches; First set the fan switch.

27 69-0733—3 28 69-0733—3 Move the system switch to OFF and thefan switch to ON. The fan should runcontinuously. When the fan switch is inthe AUTO position, fan cycles with theheating or cooling system. FAN AUTO ON HEAT OFF COOL STEP 11 Set The Fan And System Switches First set the fan switch. FAN O...

Page 17 - Troubleshooting Guide; IF...; Make sure batteries are fresh and installed correctly.; Display flashes during; You have reached the temperature setting limit. The setting; Temperature change occurs; Check the program times for the period in question. Be sure

29 69-0733—3 Troubleshooting Guide IF… THEN… Display does not come on. ■ Set the system switch to OFF. Remove batteries. Insert back-ward for at least five seconds to reset thermostat. Replacebatteries correctly. Display should come on. ■ Make sure batteries are fresh and installed correctly. ■ Gent...

Page 18 - Heating does not come on.; Check that switch on thermostat is set to HEAT.; Cooling does not come on.; Check that switch on thermostat is set to COOL.; The house is too warm or; Press CURRENT SETTING to check the current temperature

31 69-0733—3 Heating does not come on. ■ Check that switch on thermostat is set to HEAT. ■ Check the system fuse or circuit breaker and replace or reset ifnecessary. If display is blank or displays REPL BAT, installfresh batteries. ■ Check for correct wiring and good connections. ■ Jumper wires R an...

Page 19 - Index

Adaptive Intelligent Recovery™ ....................... 7,8Batteries, installation .............. 6Batteries, replacement ........ 6,7Blinking display ....................... 6Canceling programs ............. 15Change temperature ............. 15Checking current setting ....... 15Clock display .........

Page 20 - Limited One-Year Warranty; NOTICE: This equipment is a Class B digital

35 69-0733—3 Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for aperiod of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the pro...

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