Owner's Manual
Page 1
T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S. All Rights Reserved 69-1679EF-1 Registered Trademark Patents Pending © 2004 Honeywell International Inc.
T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S. All Rights Reserved 69-1679EF-1 Registered Trademark Patents Pending © 2004 Honeywell International Inc.
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 (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED.
DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1. T8775 Thermostat (features and operation). 69-1679EF-1 2 (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED.
Owner's Manual
Page 3
... your cooling system. The fan runs continuously. SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. Operating Your Thermostat NOTE: Batteries are off. ❑ Cool: The thermostat controls your heating system. ❑ Off: Both heating and cooling systems are not required because the temperature setting is held permanently in... SYSTEM and FAN Switches (T8775C only) ❑ System and Fan settings are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1).
... your cooling system. The fan runs continuously. SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. Operating Your Thermostat NOTE: Batteries are off. ❑ Cool: The thermostat controls your heating system. ❑ Off: Both heating and cooling systems are not required because the temperature setting is held permanently in... SYSTEM and FAN Switches (T8775C only) ❑ System and Fan settings are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1).
Owner's Manual
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...; To raise the temperature setting, turn the dial clockwise. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 Troubleshooting Guide...
...; To raise the temperature setting, turn the dial clockwise. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 Troubleshooting Guide...
Owner's Manual
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...present in the display. ❑ In cooling, make sure the temperature setting is below the room temperature and a solid snowflake is running, the thermostat will flash during this delay. ❑ Check the system fuse or circuit breaker and replace or reset if necessary. ❑ Check for air ...movement at 1-800-468-1502. 69-1679EF-1 6 If you have questions concerning this thermostat, call for cooling is made before the compressor has been off for five minutes, or if a power interruption occurs while the compressor is present...
...present in the display. ❑ In cooling, make sure the temperature setting is below the room temperature and a solid snowflake is running, the thermostat will flash during this delay. ❑ Check the system fuse or circuit breaker and replace or reset if necessary. ❑ Check for air ...movement at 1-800-468-1502. 69-1679EF-1 6 If you have questions concerning this thermostat, call for cooling is made before the compressor has been off for five minutes, or if a power interruption occurs while the compressor is present...
Installation Instructions
Page 1
...Honeywell International Inc. All Rights Reserved WALL ANCHORS (2) WALL PLATE 1 WIRING HOLE 1 INCH SCREW (2) M19499 1 WHEN USING WALL ANCHORS, DRILL 3/16 IN. Failure to Wall Mount the T8775A,C wallplate, with good air circulation at average temperature. HOLES FOR PLASTER. T8775A,C The Digital Round™ Non-Programmable Thermostats The T8775A,C Thermostats... provide single-stage temperature control for 24V systems. The T8775A,C models include a thermostat, wallplate (for your ...
...Honeywell International Inc. All Rights Reserved WALL ANCHORS (2) WALL PLATE 1 WIRING HOLE 1 INCH SCREW (2) M19499 1 WHEN USING WALL ANCHORS, DRILL 3/16 IN. Failure to Wall Mount the T8775A,C wallplate, with good air circulation at average temperature. HOLES FOR PLASTER. T8775A,C The Digital Round™ Non-Programmable Thermostats The T8775A,C Thermostats... provide single-stage temperature control for 24V systems. The T8775A,C models include a thermostat, wallplate (for your ...
Installation Instructions
Page 2
... 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. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS Wiring IMPORTANT Use 18-gauge wire to Fig. 2 through 6 for typical wiring hookups. All wiring must comply with two transformers. 1 POWER SUPPLY. Typical hookup...
... 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. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS Wiring IMPORTANT Use 18-gauge wire to Fig. 2 through 6 for typical wiring hookups. All wiring must comply with two transformers. 1 POWER SUPPLY. Typical hookup...
Installation Instructions
Page 3
... using the switches located at the factory in a system where the G terminal is connected. 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. Heat Cycle Rate. FUEL SWITCH Fig. 7. See Table 1. Fuel switch. See Table 2. Table 2. See Fig...
... using the switches located at the factory in a system where the G terminal is connected. 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. Heat Cycle Rate. FUEL SWITCH Fig. 7. See Table 1. Fuel switch. See Table 2. Table 2. See Fig...
Installation Instructions
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...Control Solutions Honeywell International Inc. CHECKOUT NOTE: Temperature setpoint range is below the room temperature. 5. Slide the SYSTEM switch to Off and the FAN switch to Auto. 2. The fan should turn on . 4. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS (T8775C...interruption occurs while the compressor is running, the thermostat will appear in Hungary www.honeywell.com/yourhome The flame will display a solid snowflake and the cooling should turn on . 4. Fan 1. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic ...
...Control Solutions Honeywell International Inc. CHECKOUT NOTE: Temperature setpoint range is below the room temperature. 5. Slide the SYSTEM switch to Off and the FAN switch to Auto. 2. The fan should turn on . 4. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS (T8775C...interruption occurs while the compressor is running, the thermostat will appear in Hungary www.honeywell.com/yourhome The flame will display a solid snowflake and the cooling should turn on . 4. Fan 1. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic ...
