This thermostat provides electronic control of 24 VAC single-stage heating and cooling systems, or 750 mV heating systems.
System Types
Power Type
System Settings
Fan Settings
Must be installed by a trained, experienced technician
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
Install the thermostat about 5 feet (1.5m) above the floor in an area with good air circulation at average temperature.
Do not install in locations where the thermostat can be affected by:
Package contents
Check to make sure your package includes the following items:
Required tools & supplies
Grasp top and bottom of wallplate and pull to remove it from the thermostat
Remove the wallplate from the thermostat as shown on left, then follow the directions below for mounting.
NOTES
R & Rc terminals
In a single-transformer system, leave metal jumper in place between R & Rc. Remove metal jumper if a two-transformer system.
Heat pump systems
If wiring to a heat pump, use a small piece of wire (not supplied) to connect terminals W and Y.
Wire specifications
Use 18- to 22-gauge thermostat wire.
A shielded cable is not required.
Wiring
Terminal Designations
Install two AA alkaline batteries in the back of the thermostat, as shown at left. Fresh batteries should be installed immediately when the REPLACE BATT warning begins flashing (see page 10.) The warning flashes about two months before batteries are depleted. Even if the warning does not appear, Batteries should be replaced once a year, or before the home is left vacant for more than a month.
Align the 4 tabs on the wallplate with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place.
Follow the procedure below to configure the thermostat to match the installed heating/cooling system, and customize feature operation as desired.
Setup Function Settings & Options
1 | System type | 0 | Gas, oil or electric heat with air conditioning |
1 | Heat pump (5-minute compressor off time in heating and cooling) | ||
5 | Heating cycle rate | 5 | For gas or oil furnaces of less than 90% efficiency |
(CPH: cycles/hour) | 1 | For steam or gravity systems | |
3 | For hot water systems & furnaces of over 90% efficiency | ||
9 | For electric furnaces [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH] | ||
9 | Compressor cycle rate (CPH) | 3 | Recommended for most compressors [Other cycle rate options: 1, 2, 4, 5 or 6 CPH] |
14 | Temperature | 0 | Fahrenheit |
display | 1 | Celsius | |
15 | Compressor protection | 5 | Five-minute compressor off time **See page 10 [Other options: 0, 1, 2, 3 or 4-minute off time] |
After completing the installer setup above, press the
Follow the procedure below to test the heating and cooling system.
System Test System Status
10 | Heating system | 0 | Heat and fan turn off. |
1 | The heat turns on. Fan also turns on immediately if Fan Operation Switch is set to Electric Heat/Heat Pump (see page 6). | ||
30 | Cooling system | 0 | The compressor and fan turn off. |
1 | The compressor and fan turn on. | ||
70 | Thermostat | 71 | Software revision number (major revisions) |
information | 72 | Software revision number (minor revisions) | |
(for reference only) | 73 | Configuration identification code (major) | |
74 | Configuration identification code (minor) | ||
75 | Production configuration date code (week) | ||
76 | Production configuration date code (year) |
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection (minimum off time) is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly.
System switch
This feature helps prevent damage to the compressor in the air conditioning or heat pump system. Damage can occur if the compressor is restarted too soon after shutdown.This feature forces the compressor to wait for a few minutes before restarting. During the wait time, the message Cool On (or Heat On if you have a heat pump) will flash on the display.When the safe wait time has elapsed, the message stops flashing and the compressor turns on.
If you have difficulty with your thermostat, please try the suggestions below. Most problems can be corrected quickly and easily.
Please contact your distributor to order accessories.
Cover plate assembly ……………………………………..Part Number 50002883-001
(Used to cover marks left by old thermostats.)
Temperature Ranges
Operating Ambient Temperature
32° to 120°F (0° to 48.9°C)
Shipping Temperature
-20° to 120°F (-28.9° to 48.9°C)
Operating Relative Humidity
5% to 90% (non-condensing)
Physical Dimensions
Electrical Ratings
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North Golden Valley, MN 55422
www.honeywell.com/yourhome
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive Scarborough, Ontario M1V 4Z9
Printed in the U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
® U.S. Registered Trademark.
© 2005 Honeywell International Inc.
Patents pending. All rights reserved.
69-1769 02-2005
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Honeywell Home TH4110B Programmable Thermostat Installation Guide
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