Honeywell T8400C Support Question
Honeywell T8400C Support Question
Find answers below for this question about Honeywell T8400C.Need a Honeywell T8400C manual? We have 2 online manuals for this item!
Question posted by idarmdar on July 31st, 2014
How To Get My Honeywell Thermostat Wont Go Below 73
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Current Answers
Related Honeywell T8400C Manual Pages
Owner's Manual - Page 1
M18539
1
69-1490
69-1490
Set
Room
FAN Auto On
SYSTEM Cool Off Heat
M18535
Em Ht Aux Ht
Set
Room
Electronic Thermostat
OWNER'S GUIDE
FAN Auto On
SYSTEM Cool Off Heat Em.Ht.
Owner's Manual - Page 2
... are not required because your temperature setting.
• Large digital display. The ▲ and ▼ keys make it easy for batteries. Over 100 years of Honeywell engineering expertise went into the making of your new thermostat! Batteries are held permanently in memory.
69-1490
2 Congratulations on the purchase of this...
Owner's Manual - Page 3
... the FAN switch:
Auto: Normal setting for improved air
circulation and air quality.
In cooling, the
fan goes off and on the bottom of the thermostat case. In heating, the fan may start a few minutes after
the heating equipment comes on.
Owner's Manual - Page 8
... can be conveniently programmed to automatically save energy.
69-1490
8
With this thermostat in the cooling mode by lowering the temperature setting 5°F (3°C) to...the heating mode by raising the temperature setting during the day. Energy Savings
You can save energy with this thermostat, temperature settings can be as high as 7% to 33% depending on your home, where you live, ...
Owner's Manual - Page 10
... cooling equipment.
• Adjust the temperature by pressing either the ▲ or ▼ key.
69-1490
10 Heating or cooling does not come on the thermostat is below 50°F (10°C).
Owner's Manual - Page 11
For service, contact your local heating and cooling contractor:
11
69-1490 If you have questions concerning this thermostat, call Honeywell Customer Assistance at 1-800-468-1502, Monday-Friday, 7:00 am-5:30 pm, Central time.
Owner's Manual - Page 12
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario M1V 4Z9
Copyright © 2000 Honeywell
All Rights Reserved
® U.S. Automation and Control Solutions
Honeywell International Inc. Registered Trademark
69-1490 J.H. 9-00
6ww9w-1.h4o9ne0ywell.com/yourhome
12
Installation Instructions - Page 1
... models. Can shock individuals or short equipment circuitry. Registered Trademark Copyright © 2002 Honeywell •
• All Rights Reserved
69- 1480- 1
unheated (uncooled) areas ...Do not install the thermostat where it carefully.
® U.S. T8400C and T8401C Electronic Thermostats
INSTALLATION INSTRUCTIONS
The T8400C and T8401C Thermostats provide singlestage, non-programmable...
Installation Instructions - Page 2
... adaptable to most 5-wire, 18 to 30 Vac heating-cooling systems. Refer to Fig. 5 and 6 for wiring the T8400C and T8401C Thermostats. Fasten the decorator cover plate and the wallplate to prevent electrical shock or equipment damage. see Fig. 2) as follows:
1. NOTE: To ensure proper mounting of ...
Installation Instructions - Page 3
... W Y G R
2C
1
L1
(HOT)
24V
L2
COOLING CONTACTOR
HEATING PRIMARY CONTROL
FAN RELAY
1 POWER SUPPLY.
Mounting Thermostat to Wallplate
1. T8400C/T8401C heat-cool wiring diagram in oil heating/electric cooling system. T8400C AND T8401C ELECTRONIC THERMOSTATS
KEEP WIRING IN SHADED AREA
ALTERNATE MOUNTING SCREW HOLE
W
Y G
R C
MOUNTING SCREW HOLE
ALTERNATE MOUNTING SCREW HOLE...
Installation Instructions - Page 4
... (5° to test heat or cool outputs. T8400C AND T8401C ELECTRONIC THERMOSTATS
Slide the FAN switch in the bottom left corner of the thermostat to the desired mode.
To increase the temperature... indication and heat cycle rate: 1. The temperature setpoint is on . Heat: The thermostat controls the heating system. TEMPERATURE DISPLAY
Set
Room
INCREASE SETTING
DECREASE SETTING
FAN Auto On...
Installation Instructions - Page 5
... s key to Auto, if available.
2. A typical example is below 50°F (10°C). Refer to display °C or °F. 3. Factory information is displayed. T8400C AND T8401C ELECTRONIC THERMOSTATS
10. NOTE: After exiting installer setup mode, change the °C or °F indication. Press the s key again to manufacturer's recommendations.
1.
M14689
6. To change cooling...
Installation Instructions - Page 6
Automation and Control Solutions
Honeywell
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
69-1480-1 G.H. Rev. 2-02
www.honeywell.com/yourhome
