T8775A,C THE DIGITAL ROUND
™
© 2020 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell International, Inc. This product is manufactured by Resideo Technologies, Inc. and its affiliates.
Tous droits réservés. La marque de commerce Honeywell Home est utilisée avec l’autorisation d’Honeywell International, Inc. Ce produit est fabriqué par
Resideo Technologies, Inc. et ses sociétés affiliées.
www.resideo.com
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
69-1677EF—03 M.S. Rev. 03-20 | Printed in United States
Fig. 10. T8775 Thermostat (features and operation).
SYSTEM Switch
Heat: The thermostat controls the heating system.
Off:
Both heating and cooling systems are off.
Cool: The thermostat
controls the cooling system.
FAN Switch
Auto:
The fan only runs with the heating and
cooling system.
On:
The fan runs continuously. Use for
improved air circulation.
CHECKOUT
NOTE:
Temperature setpoint range is 40°F to
90°F (4°C to 32°C) in heating and 45°F to
99°F (7°C to 37°C) in cooling.
Heating
1.
Slide the SYSTEM switch to Heat and the
FAN switch to Auto (T8775C only).
2.
Raise the temperature setpoint several
degrees above the room temperature.
3.
A flame
will appear in the display and the
heat should turn on.
4.
Lower the temperature setpoint below the
room temperature.
5.
The flame will disappear from the display
and the heat should turn off.
Cooling (T8775C only)
CAUTION
Low Temperature Hazard.
Operating at too low of an outdoor
temperature may cause compressor
damage.
Do not operate cooling if outdoor
temperature is below 50°F (10°C). Refer to
manufacturer’s recommendations.
NOTE:
If a call for cooling is made before the
compressor has been off for five minutes,
or if a power interruption occurs while the
compressor is running, the thermostat
will go into a five-minute delay to protect
the compressor. The snowflake
will
flash during this delay.
1.
Slide the SYSTEM switch to Cool and the
FAN switch to Auto.
2.
Lower the temperature setpoint several
degrees below the room temperature.
3.
After approximately five minutes, the ther-
mostat will display a solid snowflake
and
the cooling should turn on.
4.
Raise the temperature setpoint above the
room temperature.
5.
The snowflake
will disappear from the dis-
play and the cooling should turn off.
Fan
1.
Slide the SYSTEM switch to Off and the FAN
switch to On. The fan should run continuously.
2.
Slide the FAN switch to Auto. The fan
should turn off.
ROOM
SET
DISPLAYS ROOM
OR SET TEMPERATURE
M19520
SHOWS THAT THE
CURRENT TEMPERATURE
SETPOINT IS DISPLAYED.
(T8775C ONLY)
SELECTS
ON/AUTO
(T8775C ONLY)
SELECTS
COOL/OFF/HEAT
DISPLAYS AND ADJUSTS
TEMPERATURE SETPOINT/TURNS
BACKLIGHT ON
SHOWS THAT THE
CURRENT ROOM
TEMPERATURE IS
DISPLAYED.
