Honeywell Ct8775c44471 Manual

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Table 3.  Heat Cycle Rate.
NOTE: The cooling cycle rate does not require adjustment and therefore cannot be changed.
Fahrenheit/Celsius Indication
❑Use DIP switch 3 to set the desired temperature indication. See Table 4.
Table 4. Temperature Indication.
STEP 9. MOUNT THE THERMOSTAT
Heating System Cycles Per Hour DIP Switch 1 DIP Switch 2
Steam, Gravity 1 On On
High Efficiency Warm Air (90%+ efficiency), Hot Water, Heat Pump 3 Off On
Gas or Oil Warm Air (factory setting) 6 Off Off
Electric...

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STEP 10. SET THE SYSTEM AND FAN 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.
Fan Switch (see Fig. 5)
❑Fan Auto: Normal setting for most homes. The fan only runs with the heating and cooling system.
❑Fan On: The fan runs continuously. Use for improved air circulation. 
Fig. 5. CT8775 Thermostat (features and operation).
ROOMSET...

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STEP 11. OPERATING THE THERMOSTAT
NOTE: Batteries are not required because the temperature setting is held permanently in memory.
Backlit Display
❑The backlight can be turned on by turning the dial, or pushing the backlight button (see Fig. 5).
Adjust Temperature Setting
❑Turn the dial clockwise to raise the temperature setting. Turn the dial counterclockwise to lower the temperature 
setting.
STEP 12. CHECK OPERATION OF HEATING AND/OR COOLING SYSTEM
Heating System
❑Slide the system switch...

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Cooling System (CT8775C Only)
CAUTION
Equipment Damage Hazard.
Can cause permanent damage to compressor or other equipment.
Do not operate cooling when outside temperature is below 50°F (10°C). 
Allow compressor to remain off for five minutes before restarting.
See equipment manufacturer instructions.
❑Slide the system switch to Cool and the Fan switch to Auto.
❑Turn the dial counterclockwise to lower the temperature setting several degrees below the room temperature.
NOTE: If a call for...

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IF YOU HAVE A PROBLEM
Table 5. Solution Guide.
Customer Assistance
Please read and follow the provided instructions for this thermostat. For additional information, go to 
www.honeywell.com/yourhome or call Honeywell Customer Care, toll free, at 1-800-468-1502. 
Before calling, please have the following information available:
• Thermostat model number. (Located on back of thermostat).
• Thermostat date code. (Located below model number).
• Type of heating/cooling system (example: Gas, oil,...

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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 COILFAN
RELAY
1  POWER SUPPLY.  PROVIDE DISCONNECT MEANS
     AND OVERLOAD PROTECTION AS REQUIRED.
2  FACTORY INSTALLED JUMPER.
1
2
W RRcB O
Y G
1HEATING
RELAY OR
VALVE COILCOMPRESSOR
CONTACTORFAN
RELAY
M19452
1  POWER SUPPLY.  PROVIDE DISCONNECT MEANS 
  AND OVERLOAD PROTECTION AS REQUIRED.
2  FACTORY INSTALLED JUMPER.
2
W...

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Notice:
This thermostat is a Class B digital apparatus that complies with Canadian Radio Interference Regulations, 
CRC c. 1374.
1
4
COMPRESSOR
CONTACTORHEAT
CHANGEOVER
VALVE
COOL
CHANGEOVER
VALVEFAN
RELAY
M19453
1  POWER SUPPLY.  PROVIDE DISCONNECT MEANS 
  AND OVERLOAD PROTECTION AS REQUIRED.
2  FACTORY INSTALLED JUMPER.
3  USE A JUMPER WIRE (NOT SUPPLIED) TO CONNECT W TO Y.
4  USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.
3 2
W RRcB O
Y G
1
2
1HEATING
RELAY OR
VALVE COIL
COMPRESSOR...

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Limited One-Year Warranty
Honeywell warrants this product to be free from defects in the workmanship or materials, under normal use and service, for a period of 
one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or 
malfunctions, Honeywell shall repair or replace it (at Honeywells option) within a reasonable period of time.
If the product is defective,
(i) return it, with a bill of sale or other dated proof of...

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69-1676—1    J.S.  Rev. 6-04 www.honeywell.com/yourhome
Automation and Control SolutionsHoneywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN  55422 Scarborough, Ontario
M1V 4Z9