Instruction/ maintenance manual of the product CT3451 Honeywell
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® U.S. Regi stered T rademar k Copyright © 2003 Honeywe ll • •All Rights Reserved OWNER’S GUIDE 69-1620-1 CT3451 Programmable Thermostat Programmable Heat and/or C ool Low V oltage (20 to 30 V.
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 2 2 REMOVE OLD THERMOSTAT ❑ T est to be sure your heating and a ir conditioning systems (where applicable) are wor king correctly .
CT3451 PROGRAMMABLE THERMOST AT 3 69-1620—1 3 MOUNT WALLPLATE IMPORTANT Level for appeara nce only . The thermostat func- tions norm ally eve n when not mo unted level . ❑ Position the wallplate o n the wall. Level th e wallplate for appear ance, i f desire d.
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 4 Fig. 6. T ypical heat -cool syste m hookup with single transfor mer . Fig. 7. T ypical heat system hookup w ith 2-wire, he at- only system . Fig. 8. T y pical cool system hookup with 3-wire , cool-only s ystem.
CT3451 PROGRAMMABLE THERMOST AT 5 69-1620—1 Fig. 10. T ypical single-s tage heat pump syst em hookup. 5 ADJUST FAN OPERATION SWITCH The thermostat fan operation sw itch, labeled fuel switch in Fig. 1 1 , is set at the fa ctory in the F (ga s/oil fuel) position.
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 6 Fig. 13. Installing batt eries. ❑ Restore power to the heati ng/cool ing syst em. 8 CUSTOMIZE YOUR THERMOSTAT Y our Honeywell t hermostat comes pres et to the most commonly used sett ings: — T emp erature (°F).
CT3451 PROGRAMMABLE THERMOST AT 7 69-1620—1 — Press the ▲ ke y . Curren t configuration (CC) is displayed. A ty pical example is shown , but CC varies by mode l. (This information is for factor y use only .) ❑ Exit Installer Setup. — Press the ▲ key to save all changes and return to normal op eration.
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 8 2. Leave. a. P ress Select. Pr ess ▼ or ▲ key to set Leave time. b. P ress Select. Pr ess ▼ or ▲ key to set Leave temperatu re. 3. Return a. Press Select. Press ▼ or ▲ key to set Return time. b.
CT3451 PROGRAMMABLE THERMOST AT 9 69-1620—1 4. Sleep a. P ress Select. Pr ess ▼ or ▲ key to set Sleep time. b. P ress Select. Pr ess ▼ or ▲ key to set Sleep temperatu re. 5. Repeat steps 1-4 in Setting Saturd ay and Sunday Program section to set the Sund ay program.
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 1 0 System Switch ❑ The System switch settings contro l thermostat operation as follows: Cool: The ther mostat controls the cooling system. Off: Both heating and cooling are off. Heat: T he thermo stat control s the h eating system.
CT3451 PROGRAMMABLE THERMOST AT 1 1 69 -1620—1 TROUBLESHOOTING T able 4. Freque ntly Asked Questions . If ... Then ... Display does not co me on. Make sure t he batteri es are fre sh and ins tall ed correct ly . T emperature di splay doe s not go low er than 40°F (4°C) or higher than 99°F (37°C duri ng programming .
69-1620—1 J. S. 05-03 www .honeywell.com/yourhome CT3451 PROGRAMMABLE THERMOSTAT Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
An important point after buying a device Honeywell CT3451 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell CT3451 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell CT3451 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell CT3451 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell CT3451 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell CT3451, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell CT3451.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell CT3451. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell CT3451 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
