Honeywell T8775A Support Question
Honeywell T8775A Support Question
Find answers below for this question about Honeywell T8775A.Need a Honeywell T8775A manual? We have 2 online manuals for this item!
Question posted by mscho6357 on December 28th, 2015
Correct Wiring Information
My current hot water heating system has a two wire contact closure activation of the circulator pump. And I have a separate 24VAC transformer line available as well to provide operation power to the stat. The Honeywell T8775A thermostat installation manual does not show a hook-up diagram for this type of application. Do you have any suggestion as to where to hook-up the two wire contact closure wires and the two 24VAC wires?TxManfred Schober
Current Answers
Answer #1: Posted by waelsaidani1 on December 31st, 2015 10:20 PM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,797
Member since:
May 12th, 2013 Points: 19,501,797
All wiring must comply with local electrical codes and ordinances. Disconnect the power supply to prevent electrical shock or equipment damage. More information on page 2 here: https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-1677EF.pdf
Related Honeywell T8775A Manual Pages
Owner's Manual - Page 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
Owner's Manual - Page 2
T8775 Thermostat (features and operation).
69-1679EF-1
2 DISPLAYS AND ADJUSTS
TEMPERATURE SETTING/TURNS
BACKLIGHT ON
M19470
Fig. 1.
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
...: Normal setting for improved air
circulation. Operating Your Thermostat
NOTE: Batteries are not required because the temperature setting is held permanently in cooling mode when the outdoor temperature is below 50°F (10°C), or damage to compressor could result. The fan only runs with
❑ On:
the heating and cooling system.
IMPORTANT Do...
Owner's Manual - Page 4
... by turning the dial, or by pushing the backlight button as shown in cooling (T8775C only).
❑ Turn the dial one click to display the 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...
Owner's Manual - Page 5
... for five minutes before restarting. See equipment manufacturer instructions. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only).
5
69-1679EF-1
Adjust Temperature Setting
&#... Allow compressor to compressor or other equipment. Heating or cooling does not come on.
❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C)....
Owner's Manual - Page 6
...In heating,...10065; Check 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 ...thermostat, call for cooling is present in the display.
❑ In cooling, 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...
Owner's Manual - Page 8
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
69-1679EF-1 J.S. Automation and Control Solutions
Honeywell International Inc.
Rev. 6-04 Printed in Mexico
www.honeywell.com/yourhome
Installation Instructions - Page 1
... this Product...
1. hot or cold air from the sun or appliances. -
Failure to wall.
69-1677EF-1 Registered Trademark • Patents Pending © 2004 Honeywell International Inc. Mounting Wallplate to make sure the product is suitable for your application.
3.
T8775A,C
The Digital Round™ Non-Programmable Thermostats
The T8775A,C Thermostats provide single-stage temperature...
Installation Instructions - Page 2
...
Fig. 6. Disconnect the power supply to wire the T8775A,C Thermostats.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
M19517
Fig. 5. T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS
Wiring
IMPORTANT Use 18-gauge wire to prevent electrical shock or equipment damage. Typical hookup of T8775A in a heat-only system. PROVIDE DISCONNECT MEANS AND...
Installation Instructions - Page 3
... the thermostat. OPERATION
Setting SYSTEM and FAN Switches (T8775C only)
System and fan settings are controlled manually by using the switches located at the factory in a system where the G terminal is connected.
See Fig. 7. Heating System
Cycles DIP DIP
Per Switch Switch
Hour 1
2
Steam, Gravity
1
On On
High Efficiency Warm Air
3
(90%+ efficiency), Hot Water,
Heat Pump...
Installation Instructions - Page 4
...
Scarborough, Ontario
M1V 4Z9
69-1677EF-1 J.S. Rev. 6-04
Printed in cooling. 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.
T8775 Thermostat (features and operation). A flame will disappear from the display and the cooling should turn...
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