Owner's Manual
Page 1
...Vac) Thermostat and Wallplate Congratulations on the purchase of an old control. If not, return it properly. See Fig. 1. CT3451 Programmable Thermostat OWNER'S GUIDE MERCURY NOTICE If this control is compatible with a more comfortable and convenient living environment. More than 100... years of it to these instructions. Registered Trademark Copyright © 2003 Honeywell • •All Rights Reserved 69-1620-1 Contact your local waste management authority for instructions regarding recycling and the proper ...
...Vac) Thermostat and Wallplate Congratulations on the purchase of an old control. If not, return it properly. See Fig. 1. CT3451 Programmable Thermostat OWNER'S GUIDE MERCURY NOTICE If this control is compatible with a more comfortable and convenient living environment. More than 100... years of it to these instructions. Registered Trademark Copyright © 2003 Honeywell • •All Rights Reserved 69-1620-1 Contact your local waste management authority for instructions regarding recycling and the proper ...
Owner's Manual
Page 2
...69-1620-1 2 CAUTION Equipment Damage Hazard. Handling wires during installation can interfere with your system, visit our Web site at www.honeywell.com/yourhome or call the customer information line at furnace or main breaker/ fuse box before beginning installation. ❑ Carefully unpack ... volt) Multistage heat pumps/multistage equipment Compatible With CT3451 Yes Yes Yesa Yes Yesa Yes Yes Yes Yes No No Not compatible with 2-wire Honeywell zone valves. Six or More Thermostat Wires If there are replacing a Honeywell Chronotherm® Thermostat, you disconnect each wire, ...
...69-1620-1 2 CAUTION Equipment Damage Hazard. Handling wires during installation can interfere with your system, visit our Web site at www.honeywell.com/yourhome or call the customer information line at furnace or main breaker/ fuse box before beginning installation. ❑ Carefully unpack ... volt) Multistage heat pumps/multistage equipment Compatible With CT3451 Yes Yes Yesa Yes Yesa Yes Yes Yes Yes No No Not compatible with 2-wire Honeywell zone valves. Six or More Thermostat Wires If there are replacing a Honeywell Chronotherm® Thermostat, you disconnect each wire, ...
Owner's Manual
Page 6
... factory use only.) M20514 Fig. 13. M14691 - C3 = Aggressive control algorithm (Default. Can cause overshooting.) 69-1620-1 6 CT3451 PROGRAMMABLE THERMOSTAT AA BATTERIES (3) PM TUE AuFtoANOn Hold Select CoolSOYfSf THEeMat - This information is displayed, press the ▲ key to C1...10065; Enter Installer Setup. - Installing batteries. ❑ Restore power to the heating/cooling system. 8 CUSTOMIZE YOUR THERMOSTAT Your Honeywell thermostat comes preset to display the current setting. - Aggressive algorithm control. Release the keys to change the heat cycle rate,...
... factory use only.) M20514 Fig. 13. M14691 - C3 = Aggressive control algorithm (Default. Can cause overshooting.) 69-1620-1 6 CT3451 PROGRAMMABLE THERMOSTAT AA BATTERIES (3) PM TUE AuFtoANOn Hold Select CoolSOYfSf THEeMat - This information is displayed, press the ▲ key to C1...10065; Enter Installer Setup. - Installing batteries. ❑ Restore power to the heating/cooling system. 8 CUSTOMIZE YOUR THERMOSTAT Your Honeywell thermostat comes preset to display the current setting. - Aggressive algorithm control. Release the keys to change the heat cycle rate,...
Owner's Manual
Page 12
...OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. CT3451 PROGRAMMABLE THERMOSTAT PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY 10°F (5°C) DECREASE* 6 TO ... you may not apply to you . In Canada, write Retail Products ON15, Honeywell Limited/Honeywell Limitée, 35 Dynamic Dr, Scarborough, Ontario M1V 4Z9. Automation and Control Solutions Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422...
...OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. CT3451 PROGRAMMABLE THERMOSTAT PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY 10°F (5°C) DECREASE* 6 TO ... you may not apply to you . In Canada, write Retail Products ON15, Honeywell Limited/Honeywell Limitée, 35 Dynamic Dr, Scarborough, Ontario M1V 4Z9. Automation and Control Solutions Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422...