Honeywell T8131A Owner'S Manual Download | Manualshive

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69-0887—1

Toll-free Customer Assistance

For all questions concerning this thermostat, please read and follow the instructions. If additional
assistance is needed, call Honeywell Customer Assistance toll-free at 1-800-468-1502, Monday-
Friday, 7:00 a.m.-5:30 p.m. Central time.

Before you call, please have the following information available—thermostat model number and
date code, type of heating/cooling system (for example, hot water, warm air, oil, or gas), and
number of wires connected to the thermostat.

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Summary of Contents for T8131A

Page 1: ...1 69 0887 1 OWNER S GUIDE 69 0887 1 T8131A B Programmable Thermostat Weekday Weekend 5 day 2 day Programmable Heat and or Cool Low Voltage 20 to 30 Vac Thermostat and Mounting Plate ...

Page 2: ... the programing instructions in this manual your new thermostat will automatically control the temperature in your home keeping you comfortable while saving energy Direct any questions concerning the application of this thermostat to Honeywell Customer Assistance at 1 800 468 1502 Monday Friday 7 00 a m 5 30 p m Central time ...

Page 3: ...Install Batteries 9 Program the Thermostat 11 Adjust Fan Operation Switch 20 Adjust System On Time F C 20 Mount Thermostat Mounting Plate 22 Wire Thermostat Terminals 24 Mount Thermostat 28 Check Thermostat Operation After Programming and Installing 29 Set Fan and System Switches 31 Troubleshooting Guide 32 Limited One Year Warranty Inside Back Cover ...

Page 4: ...lace your old thermostat in the trash See Fig 1 Contact your local waste management authority for instructions regarding recycling and the proper disposal of your old thermostat If you have questions call Honeywell Inc at 1 800 468 1502 Fig 1 Typical location of a mercury switch in a thermostat M3701 MERCURY SWITCH ...

Page 5: ...oilers Yesa b Gas Millivolt No Oil Fired Boilers Yesa b Oil Fired Furnace Yes Electric Furnace Yes Electric Air Conditioning Yes Baseboard Electric 120 240 Line Volt No Heat Pumps Multistage Equipment No NOTE Not compatible with any 120 240 volt circuit a Compatible with 2 wire Honeywell zone valves Isolating relay required for 3 wire thermostats for zone valves Not compatible with 2 wire White Ro...

Page 6: ...gizer batteries M878B CROSS RECESSED SCREWDRIVER HAND OR POWER DRILL WITH 3 16 INCH DRILL BIT IF NEEDED TO DRILL HOLES IN WALL WIRE CUTTER STRIPPER OR SHARP KNIFE IF NEEDED TO STRIP WIRES MASKING TAPE IF NEEDED TO LABEL WIRES AS DISCONNECTED FROM OLD THERMOSTAT LEVEL IF NEEDED TO LEVEL THERMOSTAT FOR APPEARANCE ...

Page 7: ...the receipt 4 Remove the cover from the old thermo stat If it does not snap off when pulled firmly from the bottom check for a screw used to lock on the cover 5 Loosen screws holding thermostat to subbase wallplate or wall and lift away 6 Disconnect wires from old thermostat or subbase As you disconnect each wire use masking tape to label it with the old terminal designation If there are only two ...

Page 8: ...ining wires Six or More Wires If there are six or more wires excluding clock wires attached to terminals you most likely have a variation of a heat pump or multistage system This thermostat is not compatible with such systems If you would like information about which programmable thermostats will work with your system call Honeywell Customer Assistance at 1 800 468 1502 Three Thermostat Wires If y...

Page 9: ... sure the thermostat is set to the OFF position 3 Use a coin to remove the battery door 4 Install the fresh batteries as shown making sure positive and negative terminals are oriented correctly 5 Replace the battery door As the batteries are running low a bAt Lo indicator flashes for one to two months before the batteries run out completely Replace the batteries as soon as possible after the indic...

Page 10: ...s of removing the old ones you do not need to reprogram the thermostat However if the display is blank the batteries are dead or incorrectly installed and you need to reprogram See pages 16 to 19 to reprogram IMPORTANT Although the thermostat has a low battery indicator replace the batteries once a year to prevent the thermostat and heating cooling system from shutting down due to lack of battery ...

Page 11: ... During weekends only the WAKE and SLEEP time periods are available These periods can be seen individually on the display as you press the Set Schedule key WAKE is the time period you want the house at a comfortable temperature when you get up and while you get ready for work or school When deciding what time to set for your WAKE period include extra lead time depending on the outside temperature ...

Page 12: ... for cooling SLEEP is the time period you can set for an energy saving temperature while you are sleeping Again lower for heating or higher for cooling For more comfortable sleeping some homeowners choose not to raise the cool temperature during the night You will set one schedule for weekdays and another for weekends because your require ments are probably different for each Fill in the times and...

Page 13: ... programming remove the clear plastic overlay covering the display When pressing the keys use the ball of your finger or a soft pencil eraser NOTE Using sharp fingernails or pencil points can damage the keypad If you make an error at any time during programming press the Run Program key and continue again at the last step ...

Page 14: ... LEAVE RETURN SLEEP Weekends WAKE SLEEP WAKE and RETURN start times should include extra lead time based on outside temperature and furnace response time to give your furnace a head start to heat the house The temperatures cannot be set any higher than 88 F 31 C or any lower than 45 F 7 C 1 2 1 1 1 2 ...

Page 15: ...clude extra lead time based on outside temperature and furnace response time to give your furnace a head start to heat the house The temperatures cannot be set any higher than 88 F 31 C or any lower than 45 F 7 C NOTE If you decide not to program the thermostat it automatically controls heating at 68 F 20 C and cooling at 78 F 26 C 24 hours a day 1 2 1 1 1 2 ...

Page 16: ...left side using a coin at the bottom Follow the instructions on pages 9 and 10 Set Current Time Day To set the time press and release once until current time shows to set day press and release again until current day shows then press Heating Program With system switch at HEAT press and release once WAKE MON FRI and SET appear on the display Set Clock Day Set Clock Day Time Ahead Back Ahead Back Ti...

Page 17: ...E and SET appear on the display Use to program WAKE time and to program WAKE temperature for SAT SUN Repeat sequence for SLEEP Cooling Program With system switch at COOL follow the same instructions as for the Heating Program After programming adjust fan and system switches as desired Press and release to start the program Set Schedule Ahead Back Time Warmer Cooler Temp Run Program ...

Page 18: ... indicator shows on display this is cancelled at next scheduled change or to cancel sooner press Hold a temperature indefinitely such as when you are on vacation press HOLD appears on display to cancel press Check Current Temperature Setting press When using TEMPORARILY CHANGE or HOLD pressing this cancels your change Warmer Cooler Temp Run Program Warmer Cooler Temp Hold Temp Run Program Run Prog...

Page 19: ...a program press until program to cancel shows then press together Permanently Change a program Repeat steps in Heating Program or Cooling Program page 16 and 17 as applicable Return to normal program or start program press Set Schedule Ahead Back Time Run Program Questions Call Honeywell Customer Assistance 1 800 468 1502 ...

Page 20: ... oil heating system If you are installing it on another type of system adjust the on time accordingly by setting screws A and B on the back of the thermostat Use the heating system table shown in the illustration page 21 as a guide Optimize the system on time according to the type of system to minimize room temperature swings Setting the screw out one turn means turning the screw approximately 360...

Page 21: ...rnace such as a 90 or greater AFUE Average Fuel Utilization Efficiency unit adjust screw A out one turn and leave screw B in R W Y G B A THERMOSTAT BACK M9199 FOR HIGH EFFICIENCY FURNACE 90 AFUE ADJUST SCREW A OUT ONE TURN SCREW B IN FUEL SWITCH F POSITION F E FUEL SWITCH WARM AIR FURNACE HOT WATER BOILER ELECTRIC FURNACE A IN A OUT 1 TURN A IN ADJUST SCREWS THROUGH HOLES TO SELECT OPERATION DESIR...

Page 22: ...rk the two mounting holes 2 Remove mounting plate from the wall and drill 3 16 in holes in the wall if drywall as marked For firmer material such as plaster or wood drill 7 32 in holes Gently tap the anchors provided into the drilled holes until flush with the wall WALL WIRES THROUGH WALL OPENING WALL ANCHORS 2 MOUNTING PLATE MOUNTING SCREWS 2 M1718 ...

Page 23: ... plate over the holes pulling the wires through the wiring opening Loosely insert the two mounting screws into the holes 4 Level for appearance only thermostat functions properly even when not level Tighten the mounting screws LEVEL M1714A ...

Page 24: ...stat wire with the terminal of the correspond ing letter on the back of your new thermostat Refer to the illustrations on pages 26 through 27 Hold the thermo stat as shown to minimize the need for wire extenders If the wires are still too short use the wire connectors purchased locally to extend the wires See figure for guidelines on using wire extenders M1715A WIRE FROM WALL 6 IN 152 MM OF 18 GAU...

Page 25: ...stration below for proper wiring technique Securely tighten the terminals 3 Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation M3825 INSERT STRAIGHT UNDER SCREW HEAD 5 16 IN 8 MM STRIP END OF WIRE VISIBLE HERE PROPER WIRING TECHNIQUE M3002A ...

Page 26: ...Y PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 1 L1 HOT L2 HEATING RELAY OR VALVE COIL C R W Y G B A 4 WIRE COOL ONLY L1 HOT L2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 1 M9212 COOLING CONTACTOR COIL FAN RELAY ...

Page 27: ...27 69 0887 1 C R W Y G B A 5 WIRE HEAT COOL L1 HOT L2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 1 HEATING RELAY OR VALVE COIL M9214 COOLING CONTACTOR COIL FAN RELAY ...

Page 28: ... To remove the thermostat from the wall first pull out at the bottom of thermostat then remove the top M879 B PRESS LOWER EDGE OF CASE TO LATCH C SWING COVER OPEN TO CHECK OPERATION A ENGAGE TABS AT TOP OF THERMOSTAT AND MOUNTING PLATE ...

Page 29: ...the fan switch to AUTO Press key until the setting is about 10 F 6 C above room tempera ture Heating should start and the fan should run after a short delay immediately if fan operation switch is set in E position Press key until setting is about 10 F 6 C below room temperature The heating equipment should shut off Cooling To avoid possible compressor damage do not operate the cooling system when ...

Page 30: ... fan switch to AUTO Press the key until the setting is about 10 F 6 C below room temperature The cooling equipment and fan should start Press the key until the setting is about 10 F 6 C above room temperature The cooling equipment and fan should stop Move the system switch to OFF keeping the fan switch at AUTO The system and fan should be off Heat Cool Off Auto On Cooler Warmer Heat Cool Off Auto ...

Page 31: ...e E position see page 21 the fan operates with furnace only ON The fan runs continuously Use for improved air circulation during special occasions or for more efficient electronic air cleaning In a heat only system the fan runs continuously only when the fan relay is connected to the thermostat Then set the system switch COOL The thermostat controls your air condition ing system OFF Both the heati...

Page 32: ...e temperature setting limit than 45 F 7 C or higher than 88 F The setting range is 45 F to 88 F 7 C to 31 C 31 C during programming Temperature change occurs at the Check the program times for the period in wrong times question Be sure that AM and PM indications are correct Make sure the current day and time are correct Reprogram if necessary Heating will not come on Check that the green LED is li...

Page 33: ...s HEAT contact Honeywell Customer Assistance at 1 800 468 1502 Cooling will not come on Check that the green LED is lit Check that the switch on the thermostat is set to COOL Check the system fuse or circuit breaker and replace or reset if necessary Check for correct wiring and good connections The thermostat has a built in time delay on cooling Allow five to ten minutes after changing the setting...

Page 34: ...f the air conditioner does not come on after ten minutes and displays COOL contact Honeywell Customer Assistance at 1 800 468 1502 The house is too warm or too cool Press Present Setting key to check the current temperature setting If desired change the temperature setting See page 18 SYSTEM ON indicator is lit but no Allow time for the furnace to heat up and the fan to heat is coming from the reg...

Page 35: ...urrent setting Check that the wiring hole in the wall behind the does not match the display wallplate was plugged with insulation to prevent temperature drafts that could adversely affect thermostat operation Be aware that it is normal for the current setting and display temperature to differ occasionally bAt Lo remains on display after Remove batteries Wait one hour Install fresh fresh batteries ...

Page 36: ...stance is needed call Honeywell Customer Assistance toll free at 1 800 468 1502 Monday Friday 7 00 a m 5 30 p m Central time Before you call please have the following information available thermostat model number and date code type of heating cooling system for example hot water warm air oil or gas and number of wires connected to the thermostat ...

Page 37: ...napolis Cincinnati Kansas City St Louis Columbus New York Philadelphia Seattle Louisville Portland Wash D C San Francisco Dallas Atlanta Los Angeles Approximate percentage of energy cost savings Savings for Once A Day 10 F 5 C decrease Savings for Twice A Day 10 F 5 C decrease Savings for 5 F 3 summer increase TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U S AND CANADA Based on 10 F 5 C...

Page 38: ...38 69 0887 1 ...

Page 39: ...roduct was in the possession of a consumer Honeywell s 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 no...

Page 40: ...l Honeywell Inc 1985 Douglas Drive North Golden Valley MN 55422 Helping You Control Your World Home and Building Control Honeywell Limited Honeywell Limitée 155 Gordon Baker Road North York Ontario M2H 2C9 NOTICE This equipment is a Class B digital apparatus which complies with Canadian Radio Interference Regulations CRC c 1374 ...

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