Honeywell T8090A/191108A User's Manual
Contents
1. Make sure power is on Reset clock high limit control If clock powered Wire separate transformer to power clock or through system transformer install backup batteries as shown on page 8 power to clock and equipment may be off on safety filter May be clogged Safety Replace filter and reset clock limit on equipment may cut off power to system continued 69 0574 2 20 Troubleshooting continued oS Clock loses time batteries may need replacement Replace with two new AAA alkaline batteries continued as shown on page 8 We recommend Energizer batteries J Not applicable on model used in heating only system A Not applicable on model used in cooling only system A If clock is not battery powered clock may still use batteries for backup If this Troubleshooting section has not solved the problem call your qualified heating service technician or Honeywell Customer Assistance Center 1 800 468 1502 Monday Friday 7 00 AM to 5 30 PM Central time for additional assistance 21 69 0574 2 Voltage At Clock Terminals AC Voltge at C C Terminals Check Up to 15 Vac 15 to 30 Vac 69 0574 2 System power off Short in clock power supply wiring Limit switch contacts stuck open Transformer supplying power is burned out System transformer used to power the clock is inadequate Additional separate transformer used to power the clock has inadequate voltage Spring2. should start If the system does not operate call a qualified technician HEATING COOLING SYSTEM With system switch at HEAT move temperature setting levers 5 F 3 C above room temperature Heating system should start continued 69 0574 2 16 Troubleshooting continued ANICETO INIA CO INTO Room Temperatures With system switch at COOL move are not correct temperature setting levers 5 F 3 C below continued room temperature Cooling system should start f the systems do not operate call a qualified technician Burner on time too anticipator setting See figure on Increase anticipator setting by 0 05 short page 23 for anticipator location Observe burner operation Burner on time too anticipator setting See figure on Decrease anticipator setting by 0 05 long page 23 for anticipator location Observe burner operation No cooling N system switch May be in OFF or Move switch to COOL position HEAT position fuse or circuit breaker If fuse is blown or breaker tripped replace or reset continued 17 69 0574 2 Troubleshooting continued No cooling uN condenser switch position Move to ON position continued Located outdoors and may be turned OFF thermostat connections Check Turn OFF power to cooling system for correct terminal hookups Repair any frayed or broken wires Firmly tighten all terminal screws other Contact a qualified service
3. AND TIME INDICATOR ARROW M8561 Fig 3 Setting the clock 69 0574 2 Programming You can program your thermostat to automatically lower and raise the temperature one or more times every 24 hours Before setting your program Lift thermostat flip up cover and you ll find the 24 hour program dial The slots on the program dial Fig 4 are for the program pins that can be inserted at ten minute intervals Three red and three blue program pins are included with your thermostat The red pins start the high temperature period the blue pins start the low temperature period A heating program has been preprogrammed A red pin is inserted at 6 00 AM for high temperature comfort period a blue pin is inserted at 10 00 PM for low temperature energy saving period Two additional sets of pins are located in the program pin storage area You can set 69 0574 2 up to six temperature changes with the pins supplied We recommend at least five hours for each energy saving period 24 HOUR PROGRAM DIAL GRAY AREA FOR NIGHT SETTINGS FLIP UP Am COVER gt THERMOSTAT COVER PROGRAM PIN SLOT vi PROGRAM PIN PROGRAM INDEX WHEEL STORAGE TIME INDICATOR M8692 MANUAL PROGRAM ADVANCE BUTTON Fig 4 Program components To change the pins or add a new Decide when you want the energy savings energy savings period period to start and insert a b ue pin at
4. Honeywell Heating or Cooling Thermostat and Wallplate or Heating Cooling Thermostat and Subbase T8090A 191108A Q682B owner s MANUAL MEDAL Welcome to the world of energy savings with your new Honeywell fuel saver thermostat The Honeywell name is your assurance of accurate control and reliable operation for years to come Your new thermostat will automatically lower and raise the temperature in your home one or more times every 24 hours This allows you to significantly lower your fuel costs while awakening or returning home to a comfortable temperature Read this manual to learn how to use your new thermostat Recycling Notice This control contains mercury in a sealed tube Do not place control in the trash at the end of its useful life 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 this control or of an old control containing mercury in a sealed tube If you have questions call Honeywell Inc at 1 800 468 1502 69 0574 2 2 TABLE OF CONTENTS Features Of Your Thermostat a ccci8 aiunk ands a pea 4 Setting The Temperature a hes cecahgc hice a aa aa ce E a aaa aa aa a a a a a aa Oa Ra aR Rai 7 Inserting Clock Batteries orriren ua a e e eE E Eak 8 Setting The Clock sincera aaa 9 A oie ra De ie ed A ae a a Ea A aT 10 Troublesho
5. d you may have other rights which vary from state to state If you have any questions concerning this warranty please write our Customer Assistance Center Honeywell Inc P O Box 524 Minneapolis MN 55440 0524 or call 1 800 468 1502 Monday Friday 7 00 a m to 5 30 p m Central time 27 69 0574 2 Honeywell Automation and Control Solutions Honeywell International Inc Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario M1V 4Z9 Printed in U S A on recycled paper containing at least 10 post consumer paper fibers D F OHoneywell Inc 1995 EN Rev 1 95 Form Number 69 0574 2
6. fingers o thermostat not making proper contact with subbase terminals Clock has failed 22 Restore power Replace wiring Free or replace limit switch Replace transformer Use additional separate transformer Install transformer with proper secondary voltage Rebend spring fingers to a 45 degree angle to ensure proper contact Replace thermostat Servicing The Thermostat Cycle Rate Adjustment The equipment should cycle on and off just enough to keep the room temperature close to the temperature lever settings If the thermostat seems to cycle the heating system too fast or too slow adjust the cycle rate by moving the anticipator setting lever one indicator mark at a time Fig 6 Observe the heating system operation after each adjust ment NOTE Most hot water systems require a setting of 1 2A 23 ANTICIPATOR 7 SETTING LEVER watr Fig 6 Heat anticipator setting 69 0574 2 Thermometer Adjustment The thermometer has been accurately calibrated at the factory and should only need adjust ment if it has been dropped or mishandled If the set point lever and the thermometer reading do not agree follow the procedure below Remove thermostat cover and open the flip up cover Set the thermostat cover on a table near thermometer of known accuracy Allow at least five minutes for cover ther mometer to sense area temperature then ea ita compare the readings Be careful not to t
7. ng system current draw in amperes ANTICIPATOR SETTING LEVER Must be adjusted to match the heating system primary control current MERCURY BULB AND BIMETAL ELEMENT 2 Provide automatic tempera ture control by switching the heating or cooling system on or off 69 0574 2 15 191108AJ WALLPLATE Provides mount ing base and wiring connections for heating only or cooling only thermostat 16 06828 SUBBASE Provides mounting base wiring connections and manual switching control for heating cooling thermostat 69 0574 2 M719 Setting The Temperature For Heating Set the left lever blue mark to the energy savings temperature you want when you are sleeping or your home is unoccupied Set the right lever red mark to the tem perature you want for normal comfort periods NOTE You may override the time program by setting both the red and blue levers to the same temperature set point For Cooling Set the left lever blue mark to the tempera ture you want for normal comfort periods Set the right lever red mark to the energy savings temperature you want when you are sleeping or your home is unoccupied HIGH LOW TEMPERATURE TEMPERATURE SETTING LEVER SETTING BLUE MARK LEVER RED MARK MW TOR 1777777 50 Wo 80 50 60 70 80 NSS m Honeywell M1520 Fig 1 Setting high and low temperature levers 69 0574 2 Inserting Clock Batteries P
8. of of purchase including date of purchase and a short description of the malfunction and mail it postage prepaid to the following address Honeywell Inc in Canada Returned Goods Department Honeywell Limited Honeywell Limitee 1050 Berkshire Lane 740 Ellesmere Road Plymouth MN 55441 4437 Scarborough Ontario M1P2V9 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 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 not allow the exclusion or limitation of incidental or consequential damages so this limitation may not apply to you 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 ONE 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 an
9. oting oie ete ceeeincdevte ete ieiel oreen renaatta yar ebegan ua na dapra nebeet annye aaka ae karaa aaaea aaa aE een 14 SErvicing The Thermostat scaricare a a a E T A aaas 23 Gycle Rate Adjustment iaa ai ia as 23 Therm omet r AdjUSstMSN tactica a it tasa 24 Wal ia 27 3 69 0574 2 Features Of Your Thermostat FLIP UP COVER Lift it up to set clock for energy savings and normal temperature periods THERMOSTAT COVER Lift up and remove to adjust heat anticipator THERMOMETER Provides accurate room temperature reading CLOCK This clock provides a 24 hour slotted dial to hold the programming pins CLOCK HANDS Turn minute hand clock wise Ny to match the correct AM or PM time to the time indicator 6 TIME INDICATOR Arrow head indicates time for 24 hour dial PROGRAM INDEX WHEEL Controls high and low temperature at specific time of day as set by program pins 69 0574 2 TEMPERATURE SETTING LEVERS Left blue mark controls the low temperature right red mark controls the high temperature 50 50 70 80 NASSA MIAA M8726 9 PROGRAM PINS Must be inserted into 24 hour clock dial slots to control program index wheel PIN SLOTS Located on 24 hour dial at 10 minute intervals for program pin insertion MANUAL PROGRAM ADVANCE BUTTON Allows change from comfort to energy savings setting and vice versa without changing the program HEAT ANTICIPATOR SCALEPLATE Calibrated to match the heati
10. ou want the energy savings period to start and insert a red pin at the notch that corresponds to this time After the red pin engages the air conditioner will be off until room temperature rises to the energy savings set point Start Or End Programs With Manual Program Advance Button IMPORTANT 70 prevent damage to the program Press the button to immediately begin an advance mechanism DO NOT use the energy savings period or return to the normal program advance button within a 30 minute setting After pressing the button check the period before or after a program change program indicator to ensure the system is in the desired mode If the program indicator The manual program advance button shows blue the lower temperature is in effect enables immediate one time only program if it shows red the higher temperature is in changes to accommodate temporary schedule effect Using the manual advance button will changes not affect the stored program 13 69 0574 2 Troubleshooting Your Honeywell thermostat requires little or no attention Most problems can generally be traced to the following Problem Che action No heat system switch May be in OFF or Move system switch to HEAT position COOL position A fuse or circuit breaker If blown or tripped replace fuse or reset breaker furnace power switch May be Off Move switch to ON pilot flame May be out Relight pilot flame per furnace manufactu
11. ouch SLOT thermometer or breathe on it If the readings are the same replace cover and put the system into operation If the readings are different insert a small screwdriver in the thermometer slot shown in Fig 7 and turn it until both thermometers read the same Replace thermostat cover and put the system into operation BACKSIDE OF FLIP UP COVER INSERT AND TURN SCREWDRIVER M1810 Fig 7 Thermometer adjustment 69 0574 2 24 25 69 0574 2 If you have questions regarding the installation and programming of your Honeywell thermostat please contact the Honeywell Customer Assistance Center at 1 800 468 1502 Monday Friday 7 00 AM to 5 30 PM Central time Before you call please have the following information available make and model of furnace old thermostat and air conditioner 69 0574 2 26 Limited One 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 one 1 year 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 Honeywell s 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 dealer or contractor from which you purchased it or ii package it carefully along with pro
12. ower is supplied to the clock by the 24 Vac transformer by two AAA alkaline batteries included or by the heating or cooling control circuit Backup batteries may be installed to supply power to the clock if power is inter rupted when using 24 Vac powering method Install batteries in thermostat as shown in Fig 2 Once a year or when batteries are dead replace with two new AAA alkaline batteries We recommend Energizer batteries 69 0574 2 BATTERY LOCATION FOR 2 AAA BATTERIES INSTALL WITH POSITIVE ENDS UP Fig 2 Inserting clock batteries Setting The Clock Lift thermostat flip up cover and you ll find the 24 hour program dial slotted in 10 minute increments Adjust the clock to the current time by moving the minute hand carefully in clock wise N direction DO NOT reverse the minute hand When time is correctly set the Time Indicator Arrow see Fig 3 will point to the correct time and corresponding daytime light or nighttime dark band of the program dial EXAMPLE For 11 PM the time indicator arrow will point directly to dark band For 11 AM the arrow will point to light band on dial Daylight Savings Time When Daylight Savings Time starts move the minute hand carefully in a clockwise direction one hour When Daylight Savings Time ends move the minute hand carefully in a clockwise direction 23 hours Do NOT reverse the minute hand or damage to timer mechanism may occur MINUTE H
13. rers instructions Rand W thermostat connections Turn Off power to furnace Check for correct terminal hookups Repair any frayed or broken wires Firmly tighten all terminal screws Turn On power other problem Contact a qualified service technician for assistance continued 69 0574 2 14 Troubleshooting continued ra a a Energy savings program dial for proper day or Turn timer ahead 12 hours Move setting temperature program night phase knob clockwise y only 12 hours off Rooms do not warm timer program for heating system Move red pin one half hour earlier on the up at programmed May need more time to warm up program dial time A rooms Temperature change programs pins for correct time Relocate pins to desired settings occurs at the wrong locations time Room temperatures positions of thermostat setpoint Reset to desired temperatures are not correct levers position of subbase system Move to desired operating position switch continued 15 69 0574 2 Troubleshooting continued AUCTION ICI O n Room temperatures thermostat circuits HEATING ONLY SYSTEM Move are not correct temperature setting levers 5 F 3 C continued above room temperature Heating system should start If the system does not operate call a qualified technician COOLING ONLY SYSTEM Move temperature setting levers 5 F 3 C below room temperature Cooling system
14. technician for assistance Thermostat setting level position of thermostat Reinstall thermostat wallplate or subbase and thermometer Use a spirit level reading disagree area around thermostat for drafts Thermostat should be about 5 ft 1 5m or radiant heat above floor on an inside wall Contact qualified service technician for change of location continued 69 0574 2 18 Troubleshooting continued eS Thermostat setting Calibration of thermometer See instructions on page 24 and thermometer reading disagree continued Clock does not run thermostat connections at the two C terminals If no connections clock needs Install as shown on page 8 batteries in order to run Batteries may not have been Replace with two new AAA alkaline batteries installed as shown on page 8 Batteries may need replacement if new batteries are installed and Replace thermostat clock still does not run voltage across the two C Remove thermostat from the wallplate or terminals subbase and measure the voltage Refer to the table on page 22 for cause and reaction continued 19 69 0574 2 Troubleshooting continued e Clock does not run pins in program dial If pins are Push down on pins to make sure they are continued not completely seated in program completely seated in program dial dial jamming with index wheel may occur Clock loses time power May be interrupted
15. the notch To insert a pin push it straight into the that corresponds to this time After the blue pin selected notch on the program dial until it s engages the furnace will be off until room temp completely seated erature drops to the energy savings set point e To remove a pin press against program dial NIGHT BEGINS ENERGY 10 00 PM SAVING PERIOD Fra ak nee and pull the pin straight out DO NOT attempt to change a pin if it is engaged with the 68 20 aa Setting the Heating Program ia 69 20 RED 75 Decide when you want the temperature to program index wheel e On heating cooling systems you must reset the reach the comfort level Find the notch on the Fig 5 Programming examples dial that s one half hour before this time and insert a redpin The half hour head start gives You can set both a day and a night pro the furnace time to heat the house before you gram See Fig 5 for program examples wake up or arrive home PIN IN CONTROL BLUE 58 14 pins when the seasons change You will also probably want to change the lever positions 11 69 0574 2 Setting the Cooling Program Decide when you want the temperature to reach the comfort level Find the notch on the dial that s one half hour before this time and insert a b ue pin The half hour head start gives the air conditioner time to cool the house before you wake up or arrive home 69 0574 2 Decide when y
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