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 T8095A/191108AJ; TS8095A/191108AC; T8095A/Q682 Heating-only Thermostat and Wallplate or Heating/Cooling Thermostat and Subbase OWNER’S MANUAL D.F. • Rev. 10-94 • M3375 • ©Honeywell Inc.
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. Recycling Notice M3375 This control contains mercury in a sealed tube. Do not place control in the trash at the end of its useful life. Your new thermostat will automatically lower and raise the temperature in your home one or more times every 24 hours.
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. Recycling Notice M3375 This control contains mercury in a sealed tube. Do not place control in the trash at the end of its useful life. Your new thermostat will automatically lower and raise the temperature in your home one or more times every 24 hours.
Features of Your Thermostat 2 3 1 2 4 5 6 7 4 1 3 M7318 8 FLIP-UP COVER. Lift 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. PROGRAM INDICATOR. Blue indicates low temperature is in effect; red indicates high temperature is in effect. CLOCK. Provides a 24-hour slotted dial to hold the programming pins. CLOCK HANDS.
Features of Your Thermostat 2 3 1 2 4 5 6 7 4 1 3 M7318 8 FLIP-UP COVER. Lift 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. PROGRAM INDICATOR. Blue indicates low temperature is in effect; red indicates high temperature is in effect. CLOCK. Provides a 24-hour slotted dial to hold the programming pins. CLOCK HANDS.
17 191108 WALLPLATE. Provides mounting base and wiring connections for heatingonly or cooling-only thermostat. 18 Q682 SUBBASE (not included with thermostat; ordered separately). Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat. See Setting Subbase Switches section for additional information. 17 O B R W G Y 18 FAN ON AUTO HEAT OFF COOL M1809 6 Setting the Temperature (Fig.
17 191108 WALLPLATE. Provides mounting base and wiring connections for heatingonly or cooling-only thermostat. 18 Q682 SUBBASE (not included with thermostat; ordered separately). Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat. See Setting Subbase Switches section for additional information. 17 O B R W G Y 18 FAN ON AUTO HEAT OFF COOL M1809 6 Setting the Temperature (Fig.
Setting Subbase Switches (If Applicable) The subbase system switch controls system operation as follows: HEAT—Heating system is controlled by the thermostat. Cooling system is off. COOL—Cooling sytem is controlled by the thermostat. Heating system is off. OFF—Both the heating and cooling sytems are off. If the fan switch is in the AUTO position, the fan is also off. AUTO—In cooling only application, only cooling operates. In heating only applications, only heating operates.
Setting Subbase Switches (If Applicable) The subbase system switch controls system operation as follows: HEAT—Heating system is controlled by the thermostat. Cooling system is off. COOL—Cooling sytem is controlled by the thermostat. Heating system is off. OFF—Both the heating and cooling sytems are off. If the fan switch is in the AUTO position, the fan is also off. AUTO—In cooling only application, only cooling operates. In heating only applications, only heating operates.
Setting the Clock ■ Lift thermostat flip-up cover to 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 a clockwise direction. Do not reverse the minute hand. ■ After setting the time correctly, the Time Indicator Arrow (triangle shape) will point to the correct time and corresponding daytime (light) or night-time (dark) band of the program dial. See Fig. 3. one hour.
Setting the Clock ■ Lift thermostat flip-up cover to 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 a clockwise direction. Do not reverse the minute hand. ■ After setting the time correctly, the Time Indicator Arrow (triangle shape) will point to the correct time and corresponding daytime (light) or night-time (dark) band of the program dial. See Fig. 3. one hour.
period). Two additional sets of pins are located in the program pin storage area. You can set up to six temperature changes with the pins supplied. We recommend at least five hours for each energy saving period. ■ To change the pins or add a new energy saving period— • To insert a pin, push it straight into the selected notch on the program dial until it is completely seated. • To remove a pin, press against the program dial and pull the pin straight out.
period). Two additional sets of pins are located in the program pin storage area. You can set up to six temperature changes with the pins supplied. We recommend at least five hours for each energy saving period. ■ To change the pins or add a new energy saving period— • To insert a pin, push it straight into the selected notch on the program dial until it is completely seated. • To remove a pin, press against the program dial and pull the pin straight out.
Press the button to immediately begin an energy savings period or return to the normal setting. After pressing the button, check the program indicator on the thermostat cover to assure the system is in the desired mode. If the program indicator shows blue, the lower temperature is in effect; if it shows red, the higher temperature is in effect. Using the manual advance button will not affect the stored program.
Press the button to immediately begin an energy savings period or return to the normal setting. After pressing the button, check the program indicator on the thermostat cover to assure the system is in the desired mode. If the program indicator shows blue, the lower temperature is in effect; if it shows red, the higher temperature is in effect. Using the manual advance button will not affect the stored program.
Troubleshooting (Continued) Problem Check — other. Energy savings temperature program 12 hours off. Rooms do not 2 warm up at programmed time. Temperature change occurs at the wrong time. Room temperatures are not correct. — program dial for proper day or night phase. Action Contact a qualified service technician for assistance. Turn clock ahead 12 hours. Move minute hand clockwise only. — timer program for heating system. May need more time to warm up rooms. — program pins for correct time locations.
Troubleshooting (Continued) Problem Check — other. Energy savings temperature program 12 hours off. Rooms do not 2 warm up at programmed time. Temperature change occurs at the wrong time. Room temperatures are not correct. — program dial for proper day or night phase. Action Contact a qualified service technician for assistance. Turn clock ahead 12 hours. Move minute hand clockwise only. — timer program for heating system. May need more time to warm up rooms. — program pins for correct time locations.
Troubleshooting (Continued) Problem Room temperatures are not correct (continued). Check Action switch at COOL, move temperature setting levers 5° F [3° C] below room temperature. Cooling system should start. If the system does not operate, call Burner-on time too short. Burner-on time too long. No cooling. 1 — anticipator setting. (See Fig. 6 for anticipator location.) — anticipator setting. (See Fig. 6 for anticipator location.) — system switch. May be in OFF or HEAT position.
Troubleshooting (Continued) Problem Room temperatures are not correct (continued). Check Action switch at COOL, move temperature setting levers 5° F [3° C] below room temperature. Cooling system should start. If the system does not operate, call Burner-on time too short. Burner-on time too long. No cooling. 1 — anticipator setting. (See Fig. 6 for anticipator location.) — anticipator setting. (See Fig. 6 for anticipator location.) — system switch. May be in OFF or HEAT position.
Troubleshooting (Continued) Problem Check Thermostat setting — calibration of thermometer. and thermometer reading disagree. (continued). Clock does not run. — voltage across the two C terminals. Clock loses time. — pins in program dial. If pins are not completely seated in program dial, jamming with index wheel may occur. — power. May be interrupted. Action See instructions on page 24. Remove thermostat from the wallplate or subbase and measure the voltage.
Troubleshooting (Continued) Problem Check Thermostat setting — calibration of thermometer. and thermometer reading disagree. (continued). Clock does not run. — voltage across the two C terminals. Clock loses time. — pins in program dial. If pins are not completely seated in program dial, jamming with index wheel may occur. — power. May be interrupted. Action See instructions on page 24. Remove thermostat from the wallplate or subbase and measure the voltage.
Voltage at Clock Terminals AC Voltage at C-C Terminals 0 Vac. Up to 15 Vac. 15 to 30 Vac. Check — 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. — Spring fingers on thermostat not making proper contact with subbase terminals. — Clock has failed. Action — Restore power.
Voltage at Clock Terminals AC Voltage at C-C Terminals 0 Vac. Up to 15 Vac. 15 to 30 Vac. Check — 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. — Spring fingers on thermostat not making proper contact with subbase terminals. — Clock has failed. Action — Restore power.
6. Replace the thermostat cover and put the system into operation. Thermometer Adjustment The thermometer was accurately calibrated at the factory and should only need adjustment if it was dropped or mishandled. If the setpoint lever and the thermometer reading do not agree, use the following procedure: 1. Remove thermostat cover and open the flip-up cover. 2. Set the thermostat cover on a table near a thermometer of known accuracy. 3.
6. Replace the thermostat cover and put the system into operation. Thermometer Adjustment The thermometer was accurately calibrated at the factory and should only need adjustment if it was dropped or mishandled. If the setpoint lever and the thermometer reading do not agree, use the following procedure: 1. Remove thermostat cover and open the flip-up cover. 2. Set the thermostat cover on a table near a thermometer of known accuracy. 3.
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.
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.
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 T8095A/191108AJ; TS8095A/191108AC; T8095A/Q682 Heating-only Thermostat and Wallplate or Heating/Cooling Thermostat and Subbase OWNER’S MANUAL D.F. • Rev. 10-94 • M3375 • ©Honeywell Inc.