Honeywell CT3451 - Manual
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Table of Contents:
- Page 2 – REMOVE OLD THERMOSTAT; CAUTION; Replacing Clock WIth C or C1 Clock; Six or More Thermostat Wires
- Page 3 – MOUNT WALLPLATE; WIRE WALLPLATE TERMINALS; Rc
- Page 6 – CUSTOMIZE YOUR THERMOSTAT; Heating/Cooling Temperature Control
- Page 7 – PROGRAM YOUR THERMOSTAT; Setting Current Time and Day
- Page 8 – Setting Saturday and Sunday Programs
- Page 9 – 0 OPERATE YOUR THERMOSTAT; Displaying Temperature Setting; 1 SET FAN AND SYSTEM; Fan Switch
- Page 10 – System Switch; Heat and Cool Indicators; 2 CHECK OPERATION AFTER; Heating System; Fan
- Page 11 – TROUBLESHOOTING
- Page 12 – Limited One-Year Warranty
® U.S. Registered Trademark
Copyright © 2003 Honeywell •
•All Rights Reserved
OWNER’S GUIDE
69-1620-1
CT3451
Programmable Thermostat
Programmable Heat and/or Cool
Low Voltage (20 to 30 Vac) Thermostat and Wallplate
Congratulations on the purchase of your new thermostat!
More than 100 years of Honeywell engineering produced
this thermostat that can provide you with a more
comfortable and convenient living environment.
Your new thermostat automatically controls the
temperature in your home, keeping you comfortable
while saving energy when programmed according to
these instructions.
Direct questions about this thermostat to our Web site at
www.honeywell.com/yourhome or call the customer
information line at 1-800-468-1502.
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of it properly.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of an old control.
1 PREPARE FOR INSTALLATION
❑
Check Table 1 to make sure this thermostat is
compatible with your system. If not, return it to the
retailer.
❑
Acquire tools and items, as needed. See Fig. 1.
Fig. 1. Required installation tools/supplies.
M10614
MERCURY
SWITCH
TYPICAL LOCATION OF A MERCURY
SWITCH IN A THERMOSTAT
M20551
SCREWDRIVER
HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED TO
DRILL HOLES IN WALL
WIRE CUTTER/STRIPPER IF NEEDED TO STRIP WIRES
LEVEL, IF NEEDED TO LEVEL
THERMOSTAT FOR APPEARANCE
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Summary
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 2 2 REMOVE OLD THERMOSTAT ❑ Test to be sure your heating and air conditioning systems (where applicable) are working correctly. If not, contact your local heating/air conditioning dealer. To avoid compressor damage, do not operate the cooling system when outd...
CT3451 PROGRAMMABLE THERMOSTAT 3 69-1620—1 3 MOUNT WALLPLATE IMPORTANT Level for appearance only. The thermostat func-tions normally even when not mounted level. ❑ Position the wallplate on the wall. Level the wallplate for appearance, if desired. Use a pencil to mark the two mounting holes that bes...
CT3451 PROGRAMMABLE THERMOSTAT 69-1620—1 6 Fig. 13. Installing batteries. ❑ Restore power to the heating/cooling system. 8 CUSTOMIZE YOUR THERMOSTAT Your Honeywell thermostat comes preset to the most commonly used settings:— Temperature (°F). — Gas or oil forced air furnace.— Aggressive algorithm co...
