Owner's Manual
Page 2
DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1. T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED.
DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1. T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED.
Owner's Manual
Page 3
... are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1). The fan only runs with ❑ On: the heating and cooling system. IMPORTANT Do not operate the T8775C in cooling mode when the outdoor temperature is held permanently in memory. 3 69-1679EF-1 SET THE...
... are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1). The fan only runs with ❑ On: the heating and cooling system. IMPORTANT Do not operate the T8775C in cooling mode when the outdoor temperature is held permanently in memory. 3 69-1679EF-1 SET THE...
Owner's Manual
Page 4
... current temperature setting. Display Temperature Setting NOTE: Your temperature setting can be set anywhere from 40°F to 90°F (4°C to 32°C) in heating and 45°F to 99°F (7°C to 37°C) in Fig. 1.
... current temperature setting. Display Temperature Setting NOTE: Your temperature setting can be set anywhere from 40°F to 90°F (4°C to 32°C) in heating and 45°F to 99°F (7°C to 37°C) in Fig. 1.
Owner's Manual
Page 5
See equipment manufacturer instructions. Allow compressor to compressor or other equipment. Troubleshooting Guide CAUTION Equipment Damage Hazard. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°...;C). Can cause permanent damage to remain off for five minutes before restarting. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise. ❑ To ...
See equipment manufacturer instructions. Allow compressor to compressor or other equipment. Troubleshooting Guide CAUTION Equipment Damage Hazard. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°...;C). Can cause permanent damage to remain off for five minutes before restarting. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise. ❑ To ...
Owner's Manual
Page 6
NOTE: If a call Honeywell Customer Care at the register. The snowflake will go into a five-minute delay to protect the compressor. If you have questions concerning this delay. ❑ ... during this thermostat, call for cooling is made before the compressor has been off for air movement at 1-800-468-1502. 69-1679EF-1 6 ❑ In heating, make sure the temperature setting is above the room temperature and the flame is present in the display (T8775C only).
NOTE: If a call Honeywell Customer Care at the register. The snowflake will go into a five-minute delay to protect the compressor. If you have questions concerning this delay. ❑ ... during this thermostat, call for cooling is made before the compressor has been off for air movement at 1-800-468-1502. 69-1679EF-1 6 ❑ In heating, make sure the temperature setting is above the room temperature and the flame is present in the display (T8775C only).
Installation Instructions
Page 1
... at average temperature. radiant heat from ducts. - Mounting Wallplate to wall. 69-1677EF-1 Can shock individuals or short equipment circuitry. T8775A,C The Digital Round™ Non-Programmable Thermostats The T8775A,C Thermostats provide single-stage temperature control for 24V systems. The T8775A,C models... - hot or cold air from the sun or appliances. - See Fig. 1. Registered Trademark • Patents Pending © 2004 Honeywell International Inc. HOLES FOR DRYWALL, 7/32 IN. Read these instructions. Do not install the thermostat where it can be a trained, ...
... at average temperature. radiant heat from ducts. - Mounting Wallplate to wall. 69-1677EF-1 Can shock individuals or short equipment circuitry. T8775A,C The Digital Round™ Non-Programmable Thermostats The T8775A,C Thermostats provide single-stage temperature control for 24V systems. The T8775A,C models... - hot or cold air from the sun or appliances. - See Fig. 1. Registered Trademark • Patents Pending © 2004 Honeywell International Inc. HOLES FOR DRYWALL, 7/32 IN. Read these instructions. Do not install the thermostat where it can be a trained, ...
Installation Instructions
Page 2
.... 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. M19515 Fig. 4. Typical hookup of T8775C in heat-cool system with local electrical codes and ordinances. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS Wiring IMPORTANT Use 18-gauge wire to Fig. 2 through 6 for typical wiring...
.... 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. M19515 Fig. 4. Typical hookup of T8775C in heat-cool system with local electrical codes and ordinances. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS Wiring IMPORTANT Use 18-gauge wire to Fig. 2 through 6 for typical wiring...
Installation Instructions
Page 3
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS CUSTOMIZE THERMOSTAT Setting Fuel Switch (T8775C only) The fuel switch is preset at the top of the thermostat. The E setting allows the fan to set the desired temperature indication. Fuel switch. Set Heat Cycle Rate Use DIP...Use DIP switch 3 to the E position. See Table 1. Mounting thermostat to Wallplate ENGAGE TABS AT BOTTOM OF THERMOSTAT AND WALL PLATE. Heat Cycle Rate. See Table 2. See Fig. 8. FUEL SWITCH Fig. 7. Fahrenheit/Celsius Display Fahrenheit (factory setting) Off Celsius On DIP ...
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS CUSTOMIZE THERMOSTAT Setting Fuel Switch (T8775C only) The fuel switch is preset at the top of the thermostat. The E setting allows the fan to set the desired temperature indication. Fuel switch. Set Heat Cycle Rate Use DIP...Use DIP switch 3 to the E position. See Table 1. Mounting thermostat to Wallplate ENGAGE TABS AT BOTTOM OF THERMOSTAT AND WALL PLATE. Heat Cycle Rate. See Table 2. See Fig. 8. FUEL SWITCH Fig. 7. Fahrenheit/Celsius Display Fahrenheit (factory setting) Off Celsius On DIP ...
Installation Instructions
Page 4
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS AND ADJUSTS ...A flame will disappear from the display and the heat should run continuously. 2. SYSTEM Switch Heat: Off: Cool: The thermostat controls the heating system. Lower the temperature setpoint several degrees above the room temperature. 5. The fan should turn off . Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic ...
T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS AND ADJUSTS ...A flame will disappear from the display and the heat should run continuously. 2. SYSTEM Switch Heat: Off: Cool: The thermostat controls the heating system. Lower the temperature setpoint several degrees above the room temperature. 5. The fan should turn off . Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic ...