Honeywell T8090T Owner's Manual

Honeywell T8090T Manual

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  • Honeywell T8090T | Owner's Manual - Page 1
    Zone Thermostat Heating/Cooling Thermostat and Subbase or Wallplate Model T8090T OWNER'S MANUAL 69-0432-1
  • Honeywell T8090T | Owner's Manual - Page 2
    of energy savings with your new Honeywell Trol-A-Temp Zone® Thermostat. Your new thermostat will automatically control the temperature in your home to provide a high level of comfort plus energy savings when programmed according to the instructions in this manual. With zone control, you heat or cool
  • Honeywell T8090T | Owner's Manual - Page 3
    Table of Contents PAGE Features of Your Thermostat ...4 Setting the Temperature ...7 Inserting Clock Batteries ...8 Setting the Clock ...9 Programming ...11 Troubleshooting ...15 Servicing the Thermostat ...21 Heat Anticipator Setting ...21 Thermometer Adjustment ...22 3 69-0432-1
  • Honeywell T8090T | Owner's Manual - Page 4
    up to set clock for energy savings and normal temperature periods. 2 THERMOSTAT COVER. 3 THERMOMETER. Provides accurate room temperature reading. 4 CLOCK. This time for 24-hour dial. 7 PROGRAM INDEX WHEEL. Controls high and low temperature at specific time of day as set by program pins
  • Honeywell T8090T | Owner's Manual - Page 5
    9 PROGRAM PINS. Must be inserted into 24-hour clock dial slots to control program index wheel. 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
  • Honeywell T8090T | Owner's Manual - Page 6
    15 WALLPLATE Provides mounting base and wiring con- nections for control of zones other than zone 1 in heating or heating-cooling systems. 16 SUBBASE Provides mounting base, wiring connec- tions and manual switching for control of 15 zone 1 in heating or heating-cooling systems. 16 6
  • Honeywell T8090T | Owner's Manual - Page 7
    LEVER (BLUE MARK) 4 3 2 1 12 11 12 9 10 8 7 6 5 3 4 9 2 3 1 12 11 10 9 8 7 6 5 6 50 60 70 80 HIGH TEMPERATURE SETTING LEVER (RED MARK) 50 60 70 80 by Honeywell M641A Fig. 1-Setting high and low temperature setting levers. 69-0432-1
  • Honeywell T8090T | Owner's Manual - Page 8
    Inserting Clock Batteries Power is supplied to the clock by two AAA alkaline batteries (included). 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. BATTERY LOCATION FOR (2)
  • Honeywell T8090T | Owner's Manual - Page 9
    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
  • Honeywell T8090T | Owner's Manual - Page 10
    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 the timer mechanism may
  • Honeywell T8090T | Owner's Manual - Page 11
    temperature period; the blue pins start the low-temperature period. A heating program is preprogrammed. A red PROGRAM PINS THERMOSTAT COVER PROGRAM PIN SLOT PROGRAM INDEX WHEEL MANUAL PROGRAM ADVANCE BUTTON PROGRAM PIN STORAGE TIME INDICATOR ARROW M8692 Fig. 4-Program components. 11 69-0432-1
  • Honeywell T8090T | Owner's Manual - Page 12
    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 up to six temperature changes with the pins supplied. We recomment at
  • Honeywell T8090T | Owner's Manual - Page 13
    NIGHT ENERGY SAVING PERIOD TEMPERATURE °F °C BEGINS 58 14 10:00 PM ENDS 68 20 6:00 AM PROGRAM PIN IN CONTROL BLUE RED TEMPERATURE °F °C 80 27 75 24 PROGRAM PIN IN CONTROL RED BLUE program. See Fig. 5 for program examples. DAY BEGINS 58 ENERGY 7:30 AM 14 BLUE 80 27 RED
  • Honeywell T8090T | Owner's Manual - Page 14
    the red pin engages, the air conditioner will be off until the room temperature rises to the energy saving setpoint. Start or End Programs With Manual Program Advance Button IMPORTANT To prevent damage to the program advance mechanism, DO NOT use the program advance button within a 30-minute period
  • Honeywell T8090T | Owner's Manual - Page 15
    Troubleshooting Your Honeywell Trol-A-Temp® Thermostat requires little or no attention. Most problems can be traced to the following. PROBLEM CHECK ACTION No heat. -system switch. May be in OFF or Move system switch to HEAT COOL position. 1 position. -fuse or circuit breaker. If blown
  • Honeywell T8090T | Owner's Manual - Page 16
    Troubleshooting (continued) PROBLEM CHECK ACTION No heat. -other. Contact a qualified service technicial for assistance. Energy . time. Relocate pins to desired settings. Room temperatures -positions of thermostat setpoint Reset to desired temperatures. are not correct. levers. -position
  • Honeywell T8090T | Owner's Manual - Page 17
    Troubleshooting (continued) PROBLEM CHECK Room temperatures -thermostat circuits. are not correct. 17 ACTION HEATING-Make sure zone 1 system switch is set at HEAT and fan switch is set at AUTO. Move temperature setting levers on the appropriate zone thermostat 5° F [3° C] above room temperature
  • Honeywell T8090T | Owner's Manual - Page 18
    Troubleshooting (continued) PROBLEM No cooling. 2 CHECK -system switch. May be in OFF or HEAT position. 1 -fuse or circuit breaker. -condenser switch position. Located outdoors and may be turned Off. -cooling equipment for proper operation. -thermostat connections. -airflow at register. Zone
  • Honeywell T8090T | Owner's Manual - Page 19
    technician for change of location. See instructions on page 22. 1 Applicable on zone 1 thermostat only. 2 Not applicable on heating-only system. If this Troubleshooting section has not solved the problem, call a qualified Trol-A-Temp® customer service at or service technician, 1-800-828-8367 for
  • Honeywell T8090T | Owner's Manual - Page 20
    (separate) transformer used to power the clock has inadequate voltage. 2. Install transformer with proper secondary voltage. 1. Spring fingers on thermostat are 1. Rebend spring fingers to a 45 not making proper contact with the degree angle to assure proper subbase terminals. contact
  • Honeywell T8090T | Owner's Manual - Page 21
    Servicing the Thermostat Heat Anticipator Setting The T8090T Thermostat has an adjustable heat anticipator that was factory-set at 0.1A. The heat anticipator must be set at 0.1A for proper system operation. See Fig. 6. MOVE INDICATOR TO 0.1A M8596 Fig. 6-Heat anticipator setting. 21 69-0432-1
  • Honeywell T8090T | Owner's Manual - Page 22
    or mishandled. If the setpoint lever and the thermometer reading do not agree, follow the procedure below. Remove the thermostat cover and open the flip-up cover. Set the thermostat cover on a table near a thermometer of known accuracy. Allow at least five minutes for the cover thermometer to
  • Honeywell T8090T | Owner's Manual - Page 23
    If you have questions regarding the installation and programming of your Honeywell Trol-ATemp® Thermostat, please contact a Trol-A-Temp® customer servoce re[resentative at 1-800- 828-8367. Before you call, please have the following information available: Make and model of
  • Honeywell T8090T | Owner's Manual - Page 24
    Home and Building Control Honeywell Inc. 1985 Douglas Drive No. Golden Valley, MN 55422 Home and Building Control Helping You Control Your World Honeywell Limited-Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 D.F. ©Honeywell Inc. 1995 Printed in Mexico Rev. 1-95 Form
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69-0432-1
Zone Thermostat
Heating/Cooling Thermostat and
Subbase or Wallplate
Model T8090T
OWNER’S MANUAL