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 fudhbe on July 24th, 2014
How To Change A Honeywell Thermostat T8400c1024
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Current Answers
Related Honeywell T8400C Manual Pages
Owner's Manual - Page 1
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. M18539
1
69-1490
69-1490
Owner's Manual - Page 2
... and easy to change your temperature setting.
• Large digital display. Batteries are held permanently in an effort to provide you to use. Congratulations on the purchase of this thermostat in memory.
69-1490
2 The ▲ and ▼ keys make it easy for batteries. Over 100 years of Honeywell engineering expertise went into...
Owner's Manual - Page 3
Use for most homes. In heating, the fan may start a few minutes after
the heating equipment comes on the bottom of the thermostat case.
Settings
Setting FAN and SYSTEM Switches
Fan and system settings are controlled by using FAN and SYSTEM switches located on .
On:
The fan runs ...
Owner's Manual - Page 7
Changing Temperature Setting
1. Set
Room
M18443
7
69-1490 To raise the temperature setting, press the ▲ key. Set
Room
M18442
2. When in the heating mode, lowering ...
Owner's Manual - Page 8
...choose and your energy savings temperature settings. If you like saving energy, but would like your thermostat to automatically change the temperature setting, you might want to automatically save energy.
69-1490
8
Energy Savings
You can save energy ... during the day. You can be conveniently programmed to consider purchasing the Honeywell Chronotherm® Programmable Thermostat.
Owner's Manual - Page 9
... 18% 19 TO 22% 23 TO 33%
COOL
* YOUR SAVINGS DEPENDS ON HOME SIZE AND ACTUAL HEAT LOSS OR GAIN, GEOGRAPHIC LOCATION, FREQUENCY OF TEMPERATURES CHANGE, AND RANGE IN DEGREES OF...
Owner's Manual - Page 10
... equipment manufacturer instructions. Temperature setting is too warm or cool.
• Check that the SYSTEM switch on . 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
...Disconnect power supply before installation. drafts or dead spots behind the thermostat. Registered Trademark Copyright © 2002 Honeywell •
• All Rights Reserved
69- 1480- 1 ...mercury in these instructions carefully. T8400C and T8401C Electronic Thermostats
INSTALLATION INSTRUCTIONS
The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature ...
Installation Instructions - Page 2
... not level. DECORATOR COVER PLATE
WALL
1 2
WALL ANCHORS (2)
Wiring
IMPORTANT Use an 18-gauge maximum wire for wiring the T8400C and T8401C Thermostats.
Mount decorator cover plate (SUPER TRADELINE® model only), wallplate, T8400C or T8401C, and the screws provided (see Wiring section. Typical location of straight or wraparound wiring connections; x 5-3/4 IN. DECORATOR...
Installation Instructions - Page 3
... On
SYSTEM Cool Off Heat
FAN Auto
SYSTEM Cool Off Heat
A ENGAGE TABS AT TOP
OF THERMOSTAT WITH SLOTS ON WALLPLATE. In cooling, the fan starts and stops with gas heat/electric
cooling. 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...
Installation Instructions - Page 4
T8400C AND T8401C ELECTRONIC THERMOSTATS
Slide the FAN switch in the bottom left corner of the thermostat to select the desired system setting. Slide the SYSTEM switch in °F, set temperature setpoint: 1. To increase the temperature setpoint press the s key.
M14682
Setting °F/°C Indication and Heat Cycle Rate
NOTE: To save changes to Room...
Installation Instructions - Page 5
... section. Slide the SYSTEM switch to Off and the FAN switch to the desired room temperature. A typical example is displayed.
T8400C AND T8401C ELECTRONIC THERMOSTATS
10. NOTE: After exiting installer setup mode, change cooling algorithm to raise the temperature setting above the room temperature.
M14688
5. M14689
6. See Table 1 for factory use of a time...
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
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