Honeywell T8090A Owner's Manual

Honeywell T8090A Manual

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  • Honeywell T8090A | Owner's Manual - Page 1
    Heating or Cooling Thermostat and Wallplate or Heating/Cooling Thermostat and Subbase T8090A/191108A, Q682B OWNER'S MANUAL 1 696-095-07547-4-22
  • Honeywell T8090A | Owner's Manual - Page 2
    to a comfortable temperature. Read this manual to learn how to use your new thermostat. Recycling Notice M3375 This control contains 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
  • Honeywell T8090A | Owner's Manual - Page 3
    TABLE OF CONTENTS Features Of Your Thermostat ...4 Setting The Temperature ...7 Inserting Clock Batteries ...8 Setting The Clock ...9 Programming ...10 Troubleshooting ...14 Servicing The Thermostat ...23 Cycle Rate Adjustment ...23 Thermometer Adjustment ...24 Warranty ...27 3 69-0574-2
  • Honeywell T8090A | Owner's Manual - Page 4
    1 FLIP-UP COVER. Lift it up to set clock for energy savings and normal temperature periods. 2 THERMOSTAT COVER. Lift up and remove to adjust heat anticipator. 3 THERMOMETER. Provides accurate room temperature reading. 4 CLOCK. This clock provides a 24-hour slotted dial to hold
  • Honeywell T8090A | Owner's Manual - Page 5
    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 changing the program. 12 HEAT ANTICIPATOR SCALEPLATE. Calibrated
  • Honeywell T8090A | Owner's Manual - Page 6
    15 191108AJ WALLPLATE. Provides mounting base and wiring connections for heating-only or cooling-only thermostat. 15 16 Q682B SUBBASE. Provides mounting base, wiring connections and manual switching control for heating/cooling thermostat. 69-0574-2 16 6 M2421 R G FAN ON AUTO O B W Y HEAT
  • Honeywell T8090A | Owner's Manual - Page 7
    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. NOTE: You may override the time program by setting
  • Honeywell T8090A | Owner's Manual - Page 8
    to supply power to the clock if power is interrupted 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. BATTERY LOCATION FOR (2) AAA BATTERIES
  • Honeywell T8090A | 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 T8090A | Owner's Manual - Page 10
    five hours for each energy saving period. 24-HOUR PROGRAM DIAL (GRAY AREA FOR NIGHT SETTINGS) FLIP-UP COVER 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. 69-0574-2 10
  • Honeywell T8090A | Owner's Manual - Page 11
    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
  • Honeywell T8090A | Owner's Manual - Page 12
    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 blue pin. The half-hour head start gives the air conditioner time to cool the house before you wake up or arrive home. Decide
  • Honeywell T8090A | Owner's Manual - Page 13
    to the program advance mechanism, DO NOT use the program advance button within a 30-minute period before or after a program change. The manual program advance button enables immediate, one-time-only program changes to accommodate temporary schedule changes. Press the button to immediately begin an
  • Honeywell T8090A | Owner's Manual - Page 14
    per furnace manufacturers instructions. - R and 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
  • Honeywell T8090A | Owner's Manual - Page 15
    Troubleshooting (continued) Problem Check Energy savings - program dial for proper day or for correct time occurs at the wrong locations. time. Room temperatures - positions of thermostat setpoint are not correct. levers. - position of subbase system switch. Action Turn timer
  • Honeywell T8090A | Owner's Manual - Page 16
    Troubleshooting (continued) Problem Room temperatures are not correct (continued). Check - thermostat circuits. Action 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 technician.
  • Honeywell T8090A | Owner's Manual - Page 17
    Troubleshooting (continued) Problem Room Temperatures are not correct (continued). Burner-on time too short. Burner-on time too long. No cooling. 1 by 0.05. Observe burner operation. Move switch to COOL position. If fuse is blown or breaker tripped, replace or reset. (continued) 17 69-0574-2
  • Honeywell T8090A | Owner's Manual - Page 18
    Troubleshooting (continued) Problem No cooling 1 (continued) Thermostat setting and thermometer reading disagree. Check Action - condenser switch position. Located outdoors and may be turned OFF. Move to ON position. - thermostat connections. Check Turn OFF power to cooling system. for correct
  • Honeywell T8090A | Owner's Manual - Page 19
    still does not run. - voltage across the two C terminals. 19 Action See instructions on page 24. Install as shown on page 8. Replace with two new AAA alkaline batteries as shown on page 8. Replace thermostat. Remove thermostat from the wallplate or subbase and measure the voltage. Refer to the
  • Honeywell T8090A | Owner's Manual - Page 20
    Troubleshooting (continued) Problem Clock does not run (continued). Clock loses time. 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
  • Honeywell T8090A | Owner's Manual - Page 21
    Troubleshooting (continued) Problem Clock loses time (continued). Check - batteries may need replacement. Action Replace with two for backup. If this Troubleshooting section has not solved the problem, call your qualified heating service technician or Honeywell Customer Assistance Center, 1-800
  • Honeywell T8090A | Owner's Manual - Page 22
    . 4. Transformer supplying power is burned out. 2. Replace wiring. 3. Free or replace limit switch. 4. Replace transformer. 1. System transformer used to power 1. Use additional (separate) transformer. the clock is inadequate. 2. Install transformer with proper secondary 2. Additional (separate
  • Honeywell T8090A | Owner's Manual - Page 23
    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
  • Honeywell T8090A | Owner's Manual - Page 24
    THERMOMETER SLOT BACKSIDE OF FLIP-UP COVER If the readings are the same, replace cover and put the system into operation. If the readings are different, and turn it until both thermometers read the same. Replace thermostat cover and put the system into operation. M1810 Fig. 7-Thermometer adjustment.
  • Honeywell T8090A | Owner's Manual - Page 25
    25 69-0574-2
  • Honeywell T8090A | Owner's Manual - Page 26
    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:
  • Honeywell T8090A | Owner's Manual - Page 27
    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
  • Honeywell T8090A | Owner's Manual - Page 28
    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 6D9.F-0. 5©74H-on2eywell Inc. 1995 Rev. 1-95 Form N2u8mber 69-0574-2
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Heating or Cooling Thermostat
and Wallplate or
Heating/Cooling Thermostat and
Subbase
T8090A/191108A, Q682B
OWNER’S MANUAL
69-0574-2