Instruction/ maintenance manual of the product CT8775A Honeywell
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OWNER’S GUIDE ® U.S. Registered T rademark • Patent s Pending Copyright © 2004 Honeywell Internat ional Inc. All Rights Reserved 69-1676—1 CT8775A,C THE DIGITAL ROUND ™ NON-PROGRAMMABLE THER.
69-1676—1 2 Enjoy the benefits of The Digit al Round TM Thermostat by Honeywell. • Simple to use. T urn the dial to adjust the temper ature setting. • Large easy-to-read display . The temperature reading is easily seen from a distance. • Backlit display .
3 69-1676—1 STEP 1. PREPARE FOR INSTALLATION ❑ Check T able 1, the compatibility chart, to make sure t he t hermostat is compatible with your system. If your system is not compatible, call Honeywell Customer Care, toll-free, 1-800-468-1502. T able 1.
69-1676—1 4 STEP 2. REMOVE OLD THERMOSTAT ❑ T est your heating and cooling systems to make sure they work properly . If either system does not wor k, contact your local heating/air-conditioning dealer . T o avoid compressor damage, do not o perate the cooling system when outdoor temperature is below 50°F (10°C).
5 69-1676—1 Replacing a thermostat that is connected to three wires on a warm air heating only system If you are replacing a thermostat that is connected to thr ee wires on a warm air heating only system and could turn the fan on by setting the thermostat fan switch to ON, the CT8775C Thermostat will work with your system.
69-1676—1 6 Mount Decorator Cover Pl ate (Optional) and Wall plate Directly to Wall ❑ If using the decorator cover plate, pull the wires through the wiring hole on the decorator co ver plate. Position the decorator cover plate against the wall so that the UP indicator in the middle of the decorator cover plate is pointing up.
7 69-1676—1 . Mount Decorator Cover Plat e (Required) and Wallpl ate onto Electrical Box ❑ Pull the wires through the wiring hole on the decorator cover plate. ❑ Place the decorator cover pl ate against the electrical box so that the UP indicator in the middle of the decorator cover plate is pointing up.
69-1676—1 8 STEP 7. WIRE WALLPLATE TERMINALS IMPORTANT All wiring must comply with local codes and ordinances. If unsure about household wiring pr ocedures, call your local heating/air conditioning contractor. ❑ Refer to the labels you placed on the wires wh en you removed the old thermostat (see illustration).
9 69-1676—1 T able 2. T erminal Designatio ns on Old and New Thermostats. NOTES: 1. If wires were connected to both Rh and R terminals on the old thermostat, remove jumper betwe en R and Rc on the new thermostat and connect Rh to R and R to Rc. 2. If wires will be connected to both R and Rc on the new thermostat, remove jumper between R and Rc.
69-1676—1 10 STEP 8. CUSTOMIZE THE THERMOSTAT Set Fuel Switch (CT8775C Only) ❑ T o adjust the fuel sw itch, locate the switch labeled E/F on the wallplate (see Fig. 3). The fuel switch is factory set in the F position. This is the correct setting for gas or oil syste ms.
1 1 69-1676—1 T able 3. Heat Cycle R ate. NOTE: The cooling cycle rate does not requi re adjustment and therefore cannot be changed. Fahrenheit/Celsius Indication ❑ Use DIP switch 3 to set the desired temperature indication. See T able 4. T able 4.
69-1676—1 12 STEP 10. SET THE SYSTEM AND F AN SWITCHES (CT8775C ONLY) System Switch (see Fig. 5) ❑ Heat: The thermostat controls your heating system. ❑ Off: Both the heating and cooling systems are off. ❑ Cool: The thermostat controls your cooling system.
13 69-1676—1 STEP 11. OPERATING THE THERMOSTAT NOTE: Batteries are not required because the tem peratu re setting is held permanently in memory . Backlit Display ❑ The backlight can be turned on by turning the di al, or pushing the backlight button (see Fig.
69-1676—1 14 Cooling System (CT8775C Only) CAUTION Equipment Damage Hazard . Can cause permane nt damage to compressor o r other equipment. Do not operate cooling when outsid e temperature is below 50°F (10°C). Allow compressor to remain off for five minutes before restarting.
15 69-1676—1 IF YOU HAVE A PROBLEM T able 5. Solution Guid e. Customer Assistance Please read and follow the provided instructions for this the rmostat. For additional information, go to www .honeywell.com/yo urhome or call Honeywell Customer Care, toll free, at 1-800-468-1502.
69-1676—1 16 Wiring Diagrams POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. W R HEATING RELAY OR VALVE COIL M19450 1 1 M19451 HEATING RELAY OR VALVE COIL FAN RELAY 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
17 69-1676—1 Notice: This thermostat is a Class B digita l app aratus that complies with C anadian R adio Interference Regulations, CRC c. 1374. 1 4 COMPRESSOR CONTACTOR HEAT CHANGEOVER VALVE COOL CHANGEOVER VALVE FAN RELAY M19453 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
69-1676—1 18 Limited One-Year Warranty Honeywell warrants th is product to be free from defects in the workmanship o r materials, under normal use an d service, for a pe riod of one (1) year from the date of purcha se by the consumer .
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69-1676—1 J.S. Rev . 6-04 www .honeywell.com/yourhome Automation and Control Solutio ns Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Go.
An important point after buying a device Honeywell CT8775A (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 CT8775A 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 CT8775A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell CT8775A you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell CT8775A will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell CT8775A, 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 CT8775A.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell CT8775A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell CT8775A 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
