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TH5110D Non-programmable Thermostat

OPERATING INSTRUCTIONS

The TH5110D Thermostat provides electronic control of 24 Vac singlestage heating and cooling systems or 750 mV heating systems.

Operating Instructions

For assistance with your Honeywell product please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502.
Read and Save these Instructions
Patents Pending U.S. Registered Trademark 2004 Honeywell International Inc. All Rights Reserved

69-1713

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Contents

Features..3 Get to Know Your Thermostat..4 Thermostat...4 Display...5 Operate Your Thermostat..6 Set System Setting..6 Set Fan Setting...7 Change Temperature Setting..8 Replace Batteries..9 Review Battery Tips..13 Built-in Compressor Protection..14 Auto Changeover...15 Replacement Part..19 Troubleshooting Tips..20 Customer Assistance..23 Limited Five-Year Warranty..24
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Features

Large, Clear, Backlit Display: Easy-to-see and readeven in the dark. Precise Comfort Control: 1F of your set temperature. Simplified Operation: Soft-key controls. Simultaneously displays both room temperature and temperature setting. Easy Change Battery Holder. Built-in Compressor Protection: Minimum-off timer protects compressor from restarting too early after a shutdown.
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Get to Know Your Thermostat Thermostat
DIGITAL DISPLAY BATTERY HOLDER LATCH
PRESS TO RELEASE BATTERY HOLDER

BATTERY HOLDER

e C Sett ool ing
TWO AAA ALKALINE BATTERIES
C Auto Syste oolO n m Coo l
RAISES TEMPERATURE SETTING
TEMPERATURE SETTING BUTTON
TEMPERATURE SETTING BUTTON FAN BUTTON
SELECTS AUTO OR ON LOWERS TEMPERATURE SETTING

SYSTEM BUTTON

SELECTS HEAT, OFF, COOL OR AUTO

M22084

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Get to Know Your Thermostat (Cont) Display
INSIDE TEMPERATURE INDICATES BATTERIES ARE LOW AND MUST BE REPLACED
Inside Replace Battery HeatCool Setting

TEMPERATURE SETTING

Fan On Auto
Heat On Cool On System Heat Cool AutoOff
INDICATES THERMOSTAT IS "CALLING" FOR HEAT OR COOL

CURRENT FAN SETTING

CURRENT SYSTEM SETTING

M22083

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Operate Your Thermostat Set System Setting
Press the System button to select Heat, Off, Cool or Auto: HeatThermostat controls the heating system. OffBoth the heating and cooling systems are off. CoolThermostat controls the cooling system. AutoThermostat automatically changes between heating and cooling operation, depending on indoor temperature. See Auto Changeover section.

CAUTION

Equipment Damage Hazard. Air conditioning compressor damage possible. Do not operate cooling system when outdoor temperature is below 50F (10C).

Replace Batt

Service Needed

Fan Auto

System Cool
PRESS THE SYSTEM BUTTON TO SELECT HEAT, OFF, COOL OR AUTO.

M22107

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Operate Your Thermostat (Cont) Set Fan Setting
Press the Fan button to select Auto or On: AutoNormal setting for most homes. The fan runs only when the heating or cooling system is on. OnThe fan runs continuously. Use this setting for improved air circulation or for more efficient air cleaning.

Inside Replace Batt

Cool Setting

CoolOn System Cool

PRESS THE FAN BUTTON TO SELECT AUTO OR ON.

M22108

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Operate Your Thermostat (Cont) Change Temperature Setting
Press the Up or Down button to select the desired temperature setting.
PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING
TEMPERATURE SETTING RANGE: HEAT: 40TO 90F (4.5T0 32C) COOL: 50TO 99F (10T0 37C)

M22109

The first press of the Up or Down button turns on the backlight. The second press of the Up or Down button changes the temperature setting.

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Replace Batteries AA alkaline batteries.
When the Replace Battery indicator is flashing, replace batteries promptly with two fresh AAA alkaline batteries.
REPLACE BATTERY INDICATOR

Inside Replace Battery

M22110
The thermostat does not lose any settings when the batteries are replaced; all settings are permanently stored in memory.

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Replace Batteries (Cont)

2. 3. Press the battery holder latch to release the battery holder. Remove the battery holder from the thermostat.
BATTERY HOLDER LATCH BATTERY HOLDER

M22111

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4. Remove the old batteries and insert two fresh AAA alkaline batteries as marked on the battery holder.
BATTERY HOLDER PUSH BATTERIES OUT THROUGH THIS HOLE

BATTERY DIRECTION

M22017
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5. Insert battery holder as shown.

Battery Tips

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Review Battery Tips

1. Replace the batteries as soon as Replace Battery flashes in the display. The Replace Battery indicator flashes in the display two months before the batteries run down completely. Always use fresh AAA alkaline batteries. Nonalkaline batteries do not last as long and can leak, causing damage to the thermostat. Although the thermostat has a Replace Battery indicator, replace the batteries once per year to prevent the thermostat and heating/cooling system from shutting down due to a lack of battery power.
NOTE: Replacing the batteries once a year also helps prevent battery leakage that can damage the thermostat. 4. As a precaution, replace the batteries when leaving your home for more than a month to prevent your heating/cooling system from shutting down if the batteries run down completely.
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Built-in Compressor Protection
The TH5110D Thermostat has built-in compressor protection (minimum-off timer) that prevents the compressor from restarting too early after a shutdown. The minimum-off timer is activated after the compressor turns off. If there is a call during the minimum-off timer, the thermostat flashes Cool On or Heat On a in the display. When the minimum-off timer expires, Cool On or Heat Ona appears solidly in the display and the compressor and the fan turn on. _________

Heat Pumps only.

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Auto Changeover

Auto Changeover is a feature used in climates where both air conditioning and heating are used on the same day. The Auto setting appears only if the thermostat is set up for Auto Changeover by your heating and air conditioning dealer. In some installations, Auto may be the only system selection. The following pages in this Auto Changeover section provide an example of how to change both the cool and heat temperature settings when the system is set to Auto. When you are adjusting the temperature setting, if !Cool or "Heat appear in the display, the temperature setting of the opposite mode is also being adjusted. The thermostat automatically keeps the cool and heat temperature settings three degrees apart (called deadband). This three-degree deadband is not adjustable.
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Auto Changeover (Cont)

1. Press the System button to change the System setting to Auto.
PRESS THE SYSTEM BUTTON TO CHANGE SYSTEM SETTING TO AUTO.

M22113

The Auto setting appears only if the thermostat is set up for Auto Changeover by your heating and air conditioning dealer.
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2. 3. Press the Up or Down button to raise or lower the cool temperature setting. Press the Select Heat/Cool button to display the Heat temperature setting. Select Heat/Cool flashes for six seconds.
PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING

Select

Heat/Cool
PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING

SELECT HEAT/ COOL BUTTON

M22114
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4. 5. Press the Up or Down button to raise or lower the heat temperature setting. Select Heat/Cool stops flashing six seconds after the last button press. The thermostat then returns to displaying Auto for the System setting.
TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING

Inside

Heat Setting

M22116

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Replacement Part

1. Replacement Battery Holder Part number 50000951-001 Battery Holder. To order, call your heating and air conditioning dealer or call Honeywell Customer Care at 1-800-468-1502.

M22018

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Troubleshooting Tips

If. Display is blank. Then. Check circuit breaker to be sure it is not tripped. Check power switch at heating and/or cooling system to be sure it is on. Check furnace door to be sure it is closed securely. If you use batteries, check that fresh AAA alkaline batteries are installed as marked on the battery holder.
Temperature Check that the temperature settings are: settings do Heating 40F to 90F (4.5C to 32C). not change. Cooling 50F to 99 F (10C to 37C). Heating Set the system to Heat by pressing the system does System button. not turn on. Check that the heat temperature setting is set above the room temperature and Heat On shows solidly in the display. Check the circuit breaker to be sure it is not tripped. Check power switch at the heating and/ or cooling system to be sure it is on. Check the furnace door to be sure it is closed securely. Wait five minutes for the heating system to respond. If all of this was checked, contact your local heating and cooling contractor.

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Troubleshooting Tips (Cont)
If. Then. Cooling Set the system to Cool by pressing the system does System button. not turn on. Check the cool temperature setting to be sure it is set below room temperature and Cool On shows solidly in the display. Check the circuit breaker to be sure it is not tripped. Check the power switch at the heating and/or cooling system to be sure it is on. Check the furnace door to be sure it is closed securely. Wait five minutes for the cooling system to respond. If all of this was checked, contact your local heating and cooling contractor. Heat On is Set System setting to Heat and set the not shown in temperature setting above the room the display. temperature. If Heat On is shown solidly in the display, but the heating system does not turn on, see Heating system does not turn on in Troubleshooting Tips.

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If. Then. Cool On is Set System setting to Cool and set the not shown in temperature setting below the room the display. temperature. If Cool On is shown solidly in the display, but the cooling system does not turn on, see Cooling system does not turn on in Troubleshooting Tips. Heat On is Compressor minimum-off timer is active. flashing in Wait up to five minutes for the heating the display system to turn on. (heat pumps only). Cool On is flashing in the display. Compressor minimum-off timer is active. Wait up to five minutes for the cooling system to turn on.
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Customer Assistance

For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502. Before calling, please have the thermostat model number and date code available.

MODEL NUMBER

xxxxxxxx xxxxxx

DATE CODE

THERMOSTAT BATTERY HOLDER

M22047

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Limited Five-Year Warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of five (5) years from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywells option) within a reasonable period of time. If the product is defective, (i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or (ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it, postage prepaid, to the following address: Honeywell Return Goods Dock 4 MN10-Douglas Dr N Golden Valley, MN 55422 This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer. Honeywells sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.

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Limited Five-Year Warranty (Cont)
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE FIVE-YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-4681502. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limite, 35 Dynamic Drive, Scarborough, Ontario M1V4Z9.
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Automation and Control Solutions
Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422
Honeywell Limited-Honeywell Limite 35 Dynamic Drive Scarborough, Ontario M1V 4Z9

G.H. 5-04

www.honeywell.com/yourhome

TH5110D Non-programmable Thermostat
INSTALLATION INSTRUCTIONS

APPLICATION

The TH5110D Non-programmable Thermostat provides electronic control of 24 Vac, single-stage heating and cooling systems or 750 mV heating systems. See Table 1 for a description.
Table 1. TH5110D Thermostat description. Feature Powering Methods Description Battery only Common wire only Common wire with battery backup Gas, oil or electric heat with air conditioning Warm air, hot water, high efficiency furnaces, heat pumps, steam and gravity Heat only includes power to open and power to close zone valves (Series 20) and normally-open zone valves Heat only with fan Cool only 750 mV heating systems Manual or auto changeover selectable Heat-Off-Cool-Auto Auto-On
System Types (Up to 1 Heat, 1 Cool)
Changeover System Setting Fan Setting
If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat.

MERCURY NOTICE

U.S. Registered Trademark Copyright 2004 Honeywell International Inc.

All Rights Reserved

69-17121
TH5110D NON-PROGRAMMABLE THERMOSTAT

INSTALLATION

When installing this product
1. 2. 3. 4. Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. Installer must be a trained, experienced service technician. After completing installation, use these instructions to check out the product operation.
Separate Wallplate from Thermostat
1. Separate the wallplate from the thermostat. See Fig. 2.
THERMOSTAT WALLPLATE WIRE HOLE

CAUTION

Electrical Hazard. Can cause electrical shock or equipment damage. Disconnect power before beginning installation.

M22042

Select Thermostat Location
Select a location for the thermostat about 5ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 1.
Fig. 2. Separate wallplate from thermostat.
Install Wallplate (See Fig. 3.)
Mount the thermostat horizontally on the wall: 1. Pull the wires through the wire hole on the wallplate. 2. Position the wallplate on the wall with the arrow pointing up. Level the wallplate for appearance only. 3. Use a pencil to mark the mounting holes. 4. Remove the wallplate from the wall and drill two 3/16-in. holes in the wall (if drywall) as marked. For firmer material such as plaster, drill two 7/32-in. holes. Tap the wall anchors (provided) into the drilled holes until flush with the wall. 5. Pull the wires through the wire hole on the wallplate and position the wallplate over the wall anchors. 6. Insert the mounting screws into the wall anchors and tighten.
YES NO 5 FEET [1.5 METERS]

M22085

DRILLED HOLES (2) WALL ANCHORS (2)
Fig. 1. Select thermostat location. Do not install the thermostat where it can be affected by: Drafts or dead spots behind doors and in corners. Hot or cold air from ducts. Radiant heat from sun or appliances. Concealed pipes and chimneys. Unheated (uncooled) areas such as an outside wall behind the thermostat.

Rc R Y C (O/B) W G

WALLPLATE

MOUNTING SCREWS (2)

M22140
Fig. 3. Install wallplate.

WIRING

All wiring must comply with local electrical codes and ordinances. Refer to Table 2 for descriptions of terminal designations. See Fig. 6-13 for wiring diagrams for specific equipment applications. 2. Push excess wire back into the wall opening and restrict wires to the shaded area. See Fig. 5.

WALLPLATE WALL OPENING

Electrical Hazard. Can cause electrical shock or equipment damage. Disconnect power before wiring.

Rc R Y C

IMPORTANT Use 18-22 gauge thermostat wire. Shielded cable is not required. 1. Loosen the screw terminals that are used for the application. Insert the wires into the terminal block and tighten each screw terminal. See Fig. 4.
WIRES TERMINAL BLOCK SCREW TERMINALS LETTER DESIGNATIONS

RC R Y C O/B W G

M22141

SHADED AREA

M22142

RC R Y W/O/B G

Fig. 5. Restrict wires to shaded area of wire hole. 3. Plug the wall opening with nonflammable insulation to prevent drafts from affecting the thermostat.

Fig. 4. Insert wires into terminal block. Table 2. Terminal designation descriptions. Terminal Designation Rc (see Note 1) R (see Note 1) Y C (see Note 2) O/B W (see Note 3) G NOTES: 1. 2. 3. Description Power for coolingconnect to secondary side of cooling system transformer Power for heatingconnect to secondary side of heating system transformer Compressor contactor Common wire from secondary side of cooling system transformer Heat relay or changeover valve terminal for heat pumps Fan relay
When used in a single-transformer system, leave metal jumper in place between Rc and R. If used on a two-transformer system, remove metal jumper between Rc and R. Common wire is optional when thermostat is used with batteries. If thermostat is configured for a heat pump in the Installer Setup, configure changeover valve for cool (O-factory setting) or heat (B).

WIRING DIAGRAMS

THERMOSTAT WIRING TERMINALS Rc R Y C O/B W G Rc R Y C O/B W 4 G HEAT RELAY FAN RELAY COMPRESSOR CONTACTOR
THERMOSTAT WIRING TERMINALS
CHANGEOVER VALVE FAN RELAY COMPRESSOR CONTACTOR

L1 (HOT) L1 2

M22068

L1 (HOT) L2 1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FACTORY INSTALLED JUMPER. OPTIONAL 24 VAC COMMON CONNECTION.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FACTORY INSTALLED JUMPER. OPTIONAL 24 VAC COMMON CONNECTION. CONFIGURE SYSTEM TYPE TO HEAT PUMP AND CHANGEOVER VALVE TO EITHER O OR B IN THE INSTALLER SETUP. M22070
Fig. 6. Typical hookup of conventional 1H/1C system with one transformer.
Fig. 8. Typical hookup of 1H/1C heat pump.
THERMOSTAT WIRING TERMINALS THERMOSTAT WIRING TERMINALS Rc R Y C O/B W G 2 RC C L1 (HOT) LRc R Y C O/B W G 2
COMPRESSOR CONTACTOR FAN RELAY

HEAT RELAY

R HEAT RELAY R C C L1 (HOT) L2 1

M22071

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE FACTORY INSTALLED JUMPER. OPTIONAL 24 VAC COMMON CONNECTION.

M22069

Fig. 9. Typical hookup of heat only system. Fig. 7. Typical hookup of conventional 1H/1C system with two transformers.
THERMOSTAT WIRING TERMINALS THERMOSTAT WIRING TERMINALS Rc R Y C O/B W G 2 Rc R Y C O/B W G 2
COMPRESSOR CONTACTOR HEAT RELAY FAN RELAY FAN RELAY R C L1 (HOT) L2 1

M22074

M22072
Fig. 10. Typical hookup of heat only system with fan.
Fig. 12. Typical hookup of cool only system.
THERMOSTAT WIRING TERMINALS Rc R 4 Y C O/B W G 2 Rc R Y 4 C O/B W G
R POWER TO OPEN AND POWER TO CLOSE MOTOR OR VALVE (SERIES 20)

1 R C L1 (HOT) L2 1

NORMALLY OPEN ZONE VALVE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FACTORY INSTALLED JUMPER.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FACTORY INSTALLED JUMPER. OPTIONAL 24 VAC COMMON CONNECTION. CONFIGURE SYSTEM TYPE TO HEAT ONLY IN THE INSTALLER SETUP.

M22075

OPTIONAL 24 VAC COMMON CONNECTION. 4 CONFIGURE SYSTEM TYPE TO HEAT ONLY IN THE INSTALLER SETUP.

M22073

Fig. 11. Typical hookup of heat only Series 20 system.
Fig. 13. Typical hookup of a heat only system with a normally open zone valve.

POWER THE THERMOSTAT

You can choose from three methods to power the thermostat: Batteries only (AAA alkaline). 24 Vac common wire only. 24 Vac common wire with battery backup (AAA alkaline). NOTE: Battery backup prevents blank displays during power interruptions.
Mount Thermostat to Wallplate
1. Align the four tabs on the wallplate with the four slots on the back of the thermostat. Push the thermostat straight onto the wallplate until it snaps into place. See Fig 15.

WALLPLATE TABS

Wiring 24 Vac Common
Single-Transformer SystemConnect the common side of the transformer to the C screw terminal of the thermostat wallplate. Leave the metal jumper in place between Rc and R. Two-Transformer SystemConnect the common side of the cooling transformer to the C screw terminal of the thermostat wallplate. Remove the metal jumper between Rc and R.

Rc R Y

C (O/B) W
SLOTS ON BACK OF THERMOSTAT

Installing Batteries

Install two AAA alkaline batteries on the back of the thermostat as marked on the battery holder. See Fig. 14. NOTE: After the thermostat is mounted on the wallplate, the thermostat does not require removal from the wallplate to replace the batteries. Refer to the enclosed Operating Instructions, 69-1713, for more information on the removable battery holder.

M22078

Fig. 15. Mount thermostat to wallplate.

BACK OF THERMOSTAT

BATTERY HOLDER BATTERIES

M22056

Fig. 14. Installing batteries.

INSTALLER SETUP

Configure Installer Setup
1. Enter Installer Setup by pressing and holding the Up and Fan buttons, at the same time, for approximately five seconds, until the screen changes. See Fig. 16.

Replace Batt

Service Needed

Inside Replace Batt

Cool Setting

Fan Auto

System Cool

M22143

Fig. 17. Configure Installer Setup.

M22079

Fig. 16. Enter Installer setup. 2. Release the Up and Fan buttons when the display on the thermostat matches the display in Fig. 17.
See Fig. 18 to review how the thermostat buttons are used during Installer Setup. See Table 3 for the Installer Setup Numbers and Settings.

INSTALLER SETUP NUMBER

SETTING UP BUTTON CHANGES SETTING DOWN BUTTON CHANGES SETTING NEXT BUTTON ADVANCES TO NEXT INSTALLER SETUP NUMBER
DONE BUTTON EXITS THE INSTALLER SETUP AND SAVES YOUR SETTINGS

M22144

Fig. 18. Review thermostat buttons used for Installer Setup.
Installer Setup Numbers and Settings
Table 3. Installer setup numbers and settings. Installer Setup Number 1 Installer Setup Name System Type Settings 0gas, oil or electric heat with air conditioning (Factory Setting) 1Heat pump 2Heat only (two-wire systems or power to open and power to close zone valves or normally-open zone valves) 3Heat only with fan 4Cool only 2 May not appear. See Note a 3 May not appear. See Note b 5 May not appear. See Note c Changeover Valve-O/B Terminal Energized in Heating or Cooling (Heat Pumps only) Fan Control in Heating 0Changeover valveO/B terminal energized in cooling (Factory Setting) 1Changeover valveO/B terminal energized in heating 0 Gas or oil furnace equipment controls fan in heating (Factory Setting) 1 Electric furnace thermostat controls fan in heating Heating Cycle Rate in cycles per hour (cph) 55 cph used for gas or oil furnaces (less than 90% efficient) (Factory Setting) 11 cph used for steam and gravity cph used for hot water and high efficiency furnaces (90%+) 99 cph used for electric furnaces 2, 4, 6, 7, 8, 10, 11, 12Other cycle rate settings 9 May not appear. See Note d 12 May not appear. See Note e Compressor Cycle Rate in cycles per hour (cph) 33 cph recommended for compressors (Factory Setting) 1, 2, 4, 5, 6Other cycle rate settings System Setting Adjustment 0Manual changeover (Factory Setting) (Heat, Off, Cool) 1Auto changeover (Heat, Off, Cool, Auto) 2Auto changeover only (Auto) 14 Temperature Display 0Fahrenheit temperature display (Factory Setting) 1Celsius temperature display 15 May not appear. See Note f Compressor Protection Minimum-Off Timer in minutes 5Five-minute compressor off-time setting (Factory Setting) 0, 1, 2, 3, 4Other compressor off-time settings

Press the Next button to go to the beginning of the Installer Setup or press the Done button to exit the Installer Setup and save your settings. Installer Setup Notes: aInstaller Setup Number 2 does not appear if Installer Setup Number 1 is set to 0, 2, 3 or 4. bInstaller Setup Number 3 does not appear if Installer Setup Number 1 is set to 1, 2 or 4. cInstaller Setup Number 5 does not appear if Installer Setup Number 1 is set to 1 or 4. dInstaller Setup Number 9 does not appear if Installer Setup Number 1 is set to 2 or 3. eInstaller Setup Number 12 does not appear if Installer Setup Number 1 is set to 2, 3 or 4. f Installer Setup Number 15 does not appear if Installer Setup Number 1 is set to 2 or 3.

INSTALLER SYSTEM TEST

Use the Installer System Test to test the heating, cooling and fan.
SYSTEM TEST NUMBER SYSTEM STATUS NUMBER UP BUTTON TURNS THE SYSTEM ON
Equipment Damage Hazard. Minimum compressor off time is bypassed during Installer System Test Avoid cycling compressor quickly.
How to Use the Installer System Test
1. Enter the Installer System Test by pressing and holding down the Up and Down buttons at the same time for approximately five seconds, until the screen changes. See Fig. 19.
DONE BUTTON EXITS THE INSTALLER SYSTEM TEST
DOWN BUTTON TURNS THE SYSTEM OFF
NEXT BUTTON ADVANCES TO NEXT SYSTEM TEST NUMBER

M22146

Fig. 20. Review thermostat buttons used during Installer System Test.

System

Installer System Tests
IMPORTANT Use the Installer System Test to test the heating, cooling and fan. The setting you choose for System Type (Installer Setup Number 1) may prevent some System Test Numbers from appearing.

M22145

Fig. 19. Enter Installer System Test. 2. See Fig. 20 to review how the thermostat buttons are used during the Installer System Test. See Table 4 for available Installer System Tests. Table 4. Installer System Tests. System Test Number 10 Test Type Heating System Test System Status Number and Description 1Heat turns on. When Installer Setup Number 1 is set to 1 or Installer Setup Number 3 is set to 1, the fan turns on immediately. 0Heat and fan turns off. 30 Cooling System Test 1Compressor and fan turns on. 0Compressor and fan turns off. 40 Fan System Test 1Fan turns on. 0Fan turns off. 70 Thermostat Information (For reference only) 71Software revision number (Major) 72Software revision number (Minor) 73Configuration identification code (Major) 74Configuration identification code (Minor) 75Production configuration date code (Week) 76Production configuration date code (Year)
Press the Next button to go to the beginning of the Installer System Test or press the Done button to exit the Installer System Test.

THERMOSTAT OPERATION

Thermostat Buttons and Battery Holder
See Fig. 21 for description of thermostat buttons and battery holder.
Minimum-Off Timer Compressor Protection
The TH5110 has an adjustable Minimum-Off Timer that can be set from zero to five minutes (Factory Setting five minutes). The Minimum-Off Timer can be bypassed through the Installer System Test or it can be bypassed permanently by setting the Minimum-Off Timer to 0 minutes in the Installer Setup. The Minimum-Off Timer is activated after the compressor turns off. If the thermostat is system powered (common wire), the Minimum-Off Timer is also activated upon initial startup and after power interruptions. If there is a call for cooling or heating during the Minimum-Off Time, the thermostat flashes Cool On or Heat Ona. When the Minimum Off Timer expires, Cool On or Heat On a appears solid in the display and the compressor and fan turn on.

______________ aHeat

DIGITAL DISPLAY

BATTERY HOLDER LAT CH

PRESS TO RELEASE BATTERY HOLDER

BATTERY HOLDER

TWO AAA ALKALINE BATTERIES

de SetCool ting

Fan C Auto Syste oolO n m Coo l
TEMPERATURE SETTING BUTTON
RAISES TEMPERATURE SETTING
TEMPERATURE SETTING BUTTON FAN BUTTON
SELECTS AUTO OR ON LOWERS TEMPERATURE SETTING

SYSTEM BUTTON

SELECTS HEAT, OFF, COOL OR AUTO

M22084

Fig. 21. Review thermostat button description.

Display

See Fig. 22 for description of display.

Pumps only.

Accessories/Replacement Parts
INSIDE TEMPERATURE INDICATES BATTERIES ARE LOW AND MUST BE REPLACED
Inside Replace Battery HeatCool Setting

TEMPERATURE SETTING

Cover Plates (see Fig. 23): 50001137-001 (Small) Cover Plate 4-5/16 in. (109 mm) high x 5-1/2 in. (140 mm) wide. 50002883-001(Large) Cover Plate 6 in. (152 mm) high x 8-5/16 in. (211 mm) wide.

Fan On Auto

Heat On Cool On System Heat Cool AutoOff
INDICATES THERMOSTAT IS "CALLING" FOR HEAT OR COOL

CURRENT FAN SETTING

CURRENT SYSTEM SETTING

M22083

Fig. 22. Review display description.

M22185

System and Fan Settings
HeatThermostat controls the heating system. OffBoth heating and cooling systems are off. CoolThermostat controls the cooling system. AutoThermostat automatically changes between heating and cooling operation, depending on indoor temperature.
Fig. 23. Cover plate. 2. Replacement Battery Holder (see Fig. 24): 50000951-001 Battery Holder.

BATTERY HOLDER LATCH

Inside Replace Battery
Auto Fan runs only when the heating or cooling system is on. OnFan runs continuously.

M22111

Fig. 24. Battery holder.

TROUBLESHOOTING

Table 5. Troubleshooting Symptom Display is blank. Possible Cause Thermostat is not powered. Action Check for 24 Vac between Rc and C. Check that fresh AAA alkaline batteries are installed as marked on the battery holder. Temperature settings do not change. Heat does not turn on (Heat On is solid in the display). The highest or lowest temperature setting was reached. Heating equipment failure. Temperature setting range: Heating: 40 F to 90 F (4.5 C to 32 C) Cooling: 50 F to 99F (10C to 37C) Check for 24 Vac at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the heating equipment to find the cause of the problem. Check for 24 Vac between the heat terminal (W) and transformer common. If 24 Vac is present, the thermostat is functional. Check the heating equipment to find the cause of the problem. Loose or broken wire connection between thermostat and heating equipment. Check for 24 Vac between the heat terminal (W) and transformer common. If voltage is not present, check wire connection (loose or broken) between the thermostat and the heating equipment. Check for 24 Vac at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem. Check for 24 Vac between the cool terminal (Y) and transformer common. If 24 Vac is present, the thermostat is functional. Check the cooling equipment to find the cause of the problem. Loose or broken wire connection between thermostat and cooling equipment. Check for 24 Vac between the cool terminal (Y) and transformer common. If voltage is not present, check the wire connection (loose or broken) between the thermostat and the cooling equipment. Set Fan Control in Heating (Installer Setup Number 3) to Electric Furnace (Setting 1). Set Changeover Valve (Installer Setup Number 2) to match the changeover required by the installed heat pump. Set System Type (Installer Setup Number 1) to match the installed heating and/or cooling equipment. Separate the shorted heating and cooling wires.
Cooling does not turn on (Cool On is solid in the display).
Cooling equipment failure.
Fan does not turn on in a call for heat (electric furnace). Heat pump puts out cool air in the heat mode and warm air in the cool mode. Both the heating and cooling equipment are running at the same time.
Fan Control in Heating (Installer Setup Number 3) is set to Gas or Oil Furnace (Setting 0). Changeover Valve (Installer Setup Number 2) is not configured to match the changeover required by the installed heat pump. The heating equipment is not a heat pump but the System Type (Installer Setup Number 1) is set to Heat Pump (Setting 1). Heating and cooling wires are shorted together.
TH5110D NON-PROGRAMMABLE THERMOSTAT Table 5. Troubleshooting Symptom Heating equipment is running in the cool mode. Heating equipment does not turn off and the heat temperature setting is set below the room temperature (Heat On is not in the display). Cannot set the system setting to Heat. Possible Cause Heating equipment is not a heat pump but System Type (Installer Setup Number 1) is set to Heat Pump (Setting 1). Heating equipment is not a heat pump but System Type (Installer Setup Number 1) is set to Heat Pump (Setting 1). Action Set System Type (Installer Setup Number 1) to match the installed heating and/or cooling equipment. Set System Type (Installer Setup Number 1) to match the installed heating and/or cooling equipment.

System Type (Installer Setup Number 1) is set to Cool Only (Setting 4). System Setting Adjustment (Installer Setup Number 12) is set to Auto Changeover Only (Setting 2).
Set System Type (Installer Setup Number 1) to match the installed heating and/or cooling equipment. Set System Setting Adjustment (Installer Setup Number 12) to Manual Changeover (Setting 0) or Auto Changeover (Setting 1). Set System Type (Installer Setup Number 1) to match the installed heating and/or cooling equipment. Set System Setting Adjustment (Installer Setup Number 12) to Manual Changeover (Setting 0) or Auto Changeover (Setting 1). Set the system setting to Heat and set the temperature setting above the room temperature. Set the system setting to Cool and set the temperature setting below the room temperature. Wait up to five minutes for the heating equipment to turn on. Wait up to five minutes for the cooling equipment to turn on.
Cannot set the system setting to Cool.
System Type (Installer Setup Number 1) is set to Heat Only (Setting 2) or Heat Only with Fan (Setting 3). System Setting Adjustment (Installer Setup Number 12) is set to Auto Changeover Only (Setting 2).
Heat On is not in the display. Cool On is not in the display. Heat On is flashing in the display (Heat pumps only). Cool On is flashing in the display.
System setting is not set to Heat and/or the temperature setting is not set above the room temperature. System setting is not set to Cool and/or the temperature setting is not set below the room temperature. Compressor minimum off timer is active.
Compressor minimum off timer is active.

SPECIFICATIONS

Electrical Ratings: Terminal W Heating W Heating (Powerpile) Y Cooling G Fan Voltage (50/60 Hz) 20 - 30 Vac 750 mV dc 20 - 30 Vac 20 - 30 Vac Running Current.02 - 1.0A 100 mA dc.02 - 1.0A.02 -.60A
Temperature Setting Range: Heating: 40F to 90F (4.5C to 32C). Cooling: 50F to 99F (10C to 37C). Operating Ambient Temperature: 37F to 102F (2.8C to 38.9C). Shipping Temperature: -30F to 150F (-34.4C to 65.6C). Operating Relative Humidity (Non-condensing): 5% to 90%. Thermostat Dimensions: 3-7/16 in (86 mm) high x 4-1/2 in. (114 mm) wide x 1-5/16 in. (33 mm) deep.
Automation and Control Solutions
Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limite 35 Dynamic Drive Scarborough, Ontario M1V 4Z9