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Heating or Cooling Thermostat
and Wallplate or
Heating/Cooling Thermostat and
Subbase
T8090A/191108A, Q682B
OWNER’S MANUAL
1 69-0574—2
69-0574-2
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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
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TABLE OF CONTENTS Features Of Your Thermostat ........................................................................................................... 4 Setting The Temperature .................................................................................................................. 7 Inserting Clock Batteries ................................................................................................................... 8 Setting The Clock .........................................
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Features Of Your Thermostat 1 FLIP-UP COVER. Lift it up to set clock for 8 TEMPERATURE SETTING LEVERS. Left energy savings and normal temperature (blue mark) controls the low temperature, periods. right (red mark) controls the high 2 THERMOSTAT COVER. Lift up and temperature. remove to adjust heat anticipator. 2 1 3 THERMOMETER. Provides accurate room temperature reading. 4 CLOCK. This clock provides a 24-hour slotted dial to hold the programming pins. 5 CLOCK HANDS. Turn minute hand clock- wis
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9 PROGRAM PINS. Must be inserted into 24-hour clock dial slots to control program index wheel. 5 4 10 8 14 10 PIN SLOTS. Located on 24-hour dial at 10-minute intervals for program pin insertion. 11 MANUAL PROGRAM ADVANCE BUTTON. Allows change from comfort to energy savings setting and vice versa without changing the program. 12 HEAT ANTICIPATOR SCALEPLATE. Calibrated to match the heating system current draw in amperes. 13 ANTICIPATOR SETTING LEVER. Must be adjusted to match the heating system p
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15 191108AJ WALLPLATE. Provides mount- ing base and wiring connections for heating-only or cooling-only thermostat. 15 M2421 16 Q682B SUBBASE. Provides mounting base, wiring connections and manual O switching control for heating/cooling B thermostat. R W G Y 16 FAN COOL ON AUTO HEAT OFF M719 69-0574—2 6
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8 9 10 11 12 1 2 3 4 5 6 7 Setting The Temperature For Heating: Set the left lever (blue mark) to the energy HIGH savings temperature you want when you are LOW TEMPERATURE TEMPERATURE SETTING LEVER sleeping or your home is unoccupied. SETTING (BLUE MARK) LEVER Set the right lever (red mark) to the tem- (RED MARK) perature you want for normal comfort periods. 50 60 70 80 NOTE: You may override the time program by 12 setting both the red and blue levers to the 50 60 70 80 same temperature se
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BATTERY LOCATION FOR Inserting Clock Batteries (2) AAA BATTERIES; Power is supplied to the clock by the 24 Vac INSTALL WITH POSITIVE ENDS UP 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 batterie
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Time ends, move the minute hand carefully in Setting The Clock a clockwise direction 23 hours. Do NOT Lift thermostat flip-up cover and you’ll find reverse the minute hand, or damage to timer the 24-hour program dial, slotted in 10-minute mechanism may occur. increments. Adjust the clock to the current time by moving the minute hand carefully in clock- wise direction. DO NOT reverse the minute hand. When time is correctly set, the Time MINUTE HAND Indicator Arrow (see Fig. 3) will point to the
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up to six temperature changes with the pins Programming supplied. We recommend at least five hours You can program your thermostat to for each energy saving period. automatically lower and raise the temperature 24-HOUR PROGRAM DIAL one or more times every 24 hours. (GRAY AREA FOR NIGHT SETTINGS) Before setting your program: FLIP-UP Lift thermostat flip-up cover and you'll find COVER the 24-hour program dial. The slots on the program dial (Fig. 4) are for the program pins that can be inserted
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Decide when you want the energy savings To change the pins or add a new period to start and insert a blue pin at the notch energy savings period: that corresponds to this time. After the blue pin • To insert a pin, push it straight into the engages, the furnace will be off until room temp- selected notch on the program dial until it’s erature drops to the energy savings set point. completely seated. • To remove a pin, press against program dial WINTER SUMMER and pull the pin straight out. DO NOT
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Decide when you want the energy savings Setting the Cooling Program: period to start and insert a red pin at the notch Decide when you want the temperature to that corresponds to this time. After the red pin reach the comfort level. Find the notch on the engages, the air conditioner will be off until dial that’s one-half hour before this time and room temperature rises to the energy savings insert a blue pin. The half-hour head start gives set point. the air conditioner time to cool the house be
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Start Or End Programs With Manual Program Advance Button IMPORTANT:To 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 temper
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Troubleshooting Your Honeywell thermostat requires little or no attention. Most problems can generally be traced to the following: Problem Check Action No heat. — system switch. May be in OFF or Move system switch to HEAT position. COOL position. 1 — 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. —R and W thermostat connec
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Troubleshooting (continued) Problem Check Action Energy savings — program dial for proper day or Turn timer ahead 12 hours. Move setting temperature program night phase. knob clockwise 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. rooms. 2 Temperature change — programs pins for correct time Relocate pins to desired settings. occurs at the wrong locatio
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Troubleshooting (continued) Problem Check Action 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 should start. If the system does not operate, call a qualified technician. HEATING/COOLING SYSTEM—
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Troubleshooting (continued) Problem Check Action 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. If 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 figur
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Troubleshooting (continued) Problem Check Action No cooling 1 — 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 technician for assistance. — level position of thermostat. Reinstall thermostat wallplate or subbase. Thermostat set
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Troubleshooting (continued) Problem Check Action 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. 3 Replace with two new AAA alkaline batteries Batteries may not have been as shown on page 8. installed. Batteries may need replacement — if new batteries are installed
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Troubleshooting (continued) Problem Check Action 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. 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
