Heating/Cooling Thermostat and Subbase or Heating or Cooling Thermostat and Wallplate T8195A,B/Q682 OWNER’S MANUAL 69-0563-2
Welcome to the world of energy savings with your new Honeywell thermostat. The Honeywell name is your assurance of accurate control and reliable operation for years to come. This thermostat meets California Title 24 requirements—mandatory installation of automatic setback thermostats in new heating and cooling systems. During heating and cooling, this thermostat will automatically lower and raise the temperature in your home one or more times every 24 hours.
Table Of Contents PAGE Features Of Your Thermostat ........................................................................................................... 4 Setting The Temperature ................................................................................................................. 7 Setting Subbase Switches ................................................................................................................ 8 Inserting Timer Backup Batteries ......................................
Features Of Your Thermostat 8 PROGRAM INDEX WHEEL. Controls high and low temperature at specific time of day as set by program pins. 9 PROGRAM PINS. Must be inserted into 24-hour timer dial slots to control program index wheel. 1 FLIP-UP COVER. Lift it up to set timer for energy savings and comfort temperature periods. 2 THERMOSTAT COVER. Lift up to adjust timer. 3 THERMOMETER. Provides accurate room temperature reading. 4 TEMPERATURE SETTING LEVERS.
6 9 11 12 M8744 10 8 7 M8745 10 PIN SLOTS. Located on 24-hour dial at 10-minute intervals for program pin insertion. 11 MERCURY BULB AND BIMETAL ELEMENT (2). Provide automatic temperature control by switching the heating or cooling system on and off. 12 WALLPLATE. Provides mounting base and wiring connections for heating or cooling thermostat without system or fan switching.
13 Q682 SUBBASE. Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat.
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 temperature you want for normal comfort periods. HIGH TEMPERATURE SETTING LEVER LOW TEMPERATURE SETTING LEVER 50 NOTE: You may override the time program by setting both the red and blue levers to the same temperature setpoint.
Setting Subbase Switches (if applicable) The subbase fan switch controls fan operation as follows: ON—Fan operates continuously. AUTO—Fan operates with cooling equipment as contolled by the thermostat or with the heating equipment as controlled by the thermostat in heating and cooling. The subbase system switch controls system operation as follows: HEAT—Heating system is controlled by the thermostat. Cooling system is Off. COOL—Cooling system is controlled by the thermostat. Heating system is Off.
Inserting Timer Batteries (Optional) BATTERY LOCATION FOR (2) AAA BATTERIES; INSTALL WITH POSITIVE ENDS UP Power is supplied to the timer by the 24 Vac transformer. Two AAA alkaline backup batteries (not included) may be installed to supply power to the timer if power is interrupted due to power failure. Install the batteries in the 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. M8585 Fig.
Setting The Timer PROGRAM DIAL Lift thermostat flip-up cover and you will find the 24-hour program dial, slotted in 10-minute increments. Adjust the timer to the current time by carefully turning the knob clockwise Do not reverse the knob. 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. PROGRAM PIN (6) TIMER SETTING KNOB TIME INDICATOR ARROW EXAMPLE: For 11 p.m.
pin storage area. You can set up to six temperature changes with the pins supplied. We recommend at least five hours for each energy savings period. Programming You can program your thermostat to automatically lower and raise the temperature one or more times every 24 hours. 24-HOUR PROGRAM DIAL (GRAY AREA FOR NIGHT SETTINGS) Before Setting Your Program FLIP-UP COVER Lift thermostat flip-up cover and you’ll find the 24-hour program dial. The slots on the program dial (Fig.
To change the pins or add a new energy savings period— • To insert a pin, push it straight into the selected notch on the program dial until it’s completely seated. • To remove a pin, press against program dial and pull the pin straight out. Do not attempt to change a pin if it is engaged with the program index wheel. • On heating-cooling systems, you must remove the program pins from the heating program to set new times for your cooling program.
Decide when you want the energy savings period to start and insert a blue pin at the notch that corresponds to this time. After the blue pin engages, the furnace will be off until room temperature drops to the energy savings setpoint. You can set both a day and night program. See Fig. 5. for program examples. Setting the Cooling Program Decide when you want the temperature to reach the comfort level. Find the notch on the program dial that’s one-half hour before this time and insert a blue pin.
Troubleshooting Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to the following: Problem No heat. Check Action — system switch. May be in OFF or COOL position. 1 Move system switch to HEAT position. — 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 manufacturers instructions.
Troubleshooting (continued) Problem Check Action No heat (continued). — other problem. Contact a qualified service technician for assistance. Energy savings temperature program 12 hours off. — program dial for proper day or night phase. Turn timer ahead 12 hours. Move setting knob clockwise only. Rooms do not warm up at programmed time. 2 — timer program for heating system. May need more time to warm up rooms. Move red pin one-half hour earlier on the program dial.
Troubleshooting (continued) Problem Room temperatures are not correct (continued). Check Action — thermostat circuits. HEATING-ONLY SYSTEM—Move temperature setting levers 5°F (3°C) above room temperature. Heating system should start. If the system does not operate, call a qualified service technician. COOLING-ONLY SYSTEM—Move temperature setting levers 5°F (3°C) below room temperature. Cooling system should start. If the system does not operate, call a qualified service technician.
Troubleshooting (continued) Problem No cooling. 1 Timer is losing time. Check Action — system switch. May be in OFF or HEAT position. Move switch to COOL position. — fuse or circuit breaker. If fuse is blown or breaker tripped, replace or reset. — condenser switch position. Located outdoors and may be turned OFF. Move to ON position. — Y and R thermostat connections. Turn Off power to cooling system. Check for correct terminal hookups. Repair any frayed or broken wires.
Troubleshooting (continued) Problem Timer is losing time (continued). Timer does not run. Check Action — high limit control. If clock powered through system transformer, power to clock and equipment may be Off on safety. Wire separate transformer to power clock. — filter. May be clogged. Safety limit on equipment may cut off power to system. Replace filter and reset clock. — voltage across the C and R terminals. Remove the thermostat from the wallplate or subbase, and measure the voltage.
Troubleshooting (continued) Problem Thermostat setting and thermometer. reading disagree. Check Action — level position of thermostat. Reinstall thermostat subbase. Use a spirit level. — area around thermostat for drafts or radiant heat. Thermostat should be about 5 ft (1.5m) above floor on an inside wall. Contact qualified service technician for change of location. 1 Not applicable on model used in heating-only system. 2 Not applicable on model used in cooling-only system.
Voltage at Timer Terminals Ac Voltage at C-R Terminals Possible Cause Check System power is Off. Short in timer power supply wiring. Limit switch contacts stuck open. Transformer supplying power is burned out. Action 0 Vac 1. 2. 3. 4. Up to 15 Vac. 1. System transformer used to power the timer is inadequate. 2. Additional (separate) transformer used to power the timer has inadequate voltage. 1. Use additional (separate) transformer. 2. Install transformer with proper secondary voltage. 15 to 30 Vac.
Servicing The Thermostat If the readings are different, insert a small screwdriver in the thermometer slot, shown in Fig. 6, and turn it until both thermometers read the same. Replace thermostat cover and put the system into operation. Thermometer Adjustment The thermometer has been accurately calibrated at the factory and should only need adjustment if it has been dropped or mishandled. If the setpoint lever and the thermostat reading do not agree, follow the procedure below.
For all questions concerning this thermostat, please read and follow the instructions. If additional assistance is needed, call our toll-free Customer assistance Center group number 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: make and model of furnace, thermostat and air conditioner.
Limited One-Year Warranty Honeywell warrants this product 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.
Automation and Control Solutions Honeywell International Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 D.F. ©Honeywell Inc. 1994 M3375 Rev.
