Honeywell T8090T Support Question
Honeywell T8090T Support Question
Find answers below for this question about Honeywell T8090T.Need a Honeywell T8090T manual? We have 1 online manual for this item!
Question posted by tariqazizsiddiqui on August 13th, 2015
Digital Thermostat To Replace A Trolatemp T8090t 2-zone For Cooling And Heating
I need digital thermostats to replace two (mercury) thermostats connected to one Central AC and one Heating unit that feed the first and second floors. Currently I have two Honeywell Trol A Temp T8090T Zone Thermostats and 191108AQ Wallplate and Q682B Subbase. I need compatible replacement thermostats.
Current Answers
Answer #1: Posted by TechSupport101 on September 4th, 2015 5:34 AM
TechSupport101
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Member since:
May 24th, 2013 Points: 12,171,305
Related Honeywell T8090T Manual Pages
Owner's Manual - Page 1
Zone Thermostat
Heating/Cooling Thermostat and Subbase or Wallplate Model T8090T
OWNER'S MANUAL
69-0432-1
Owner's Manual - Page 2
...Your new thermostat will automatically control the temperature in your home to the instructions in this control is replacing a control that contains mercury in a sealed tube, do not place your
old control in a sealed tube.
If you heat or cool each zone provides additional...according to provide a high level of energy savings with your new Honeywell Trol-A-Temp Zone® Thermostat.
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
Owner's Manual - Page 4
...
slotted dial to the time indicator.
6 TIME INDICATOR. Arrow head indicates
time for energy savings and normal temperature periods.
2 THERMOSTAT COVER.
3 THERMOMETER. Controls high
and low temperature at specific time of Your Thermostat
1
2
M8693 3
1 FLIP-UP COVER. Left
(blue mark) controls the low temperature; Provides accurate room
temperature reading.
4 CLOCK. Lift it...
Owner's Manual - Page 5
.... Must be set at 10-minute intervals for proper system operation.
14 MERCURY BULB AND BIMETAL ELEMENT(2). Allows change from comfort to match the heating system current draw in amperes.
13 ANTICIPATOR SETTING LEVER. Provide automatic temperature control by switching the heating or cooling system on 24-hour dial at 0.1A for program pin insertion...
Owner's Manual - Page 6
tions and manual switching for control of
15
zone 1 in heating or heating-cooling
systems.
16 SUBBASE
Provides mounting base, wiring connec- nections for control of zones other than
zone 1 in heating or heating-cooling
systems.
16
6
M2421
W G
Y R
M8690
69-0432-1
15 WALLPLATE
Provides mounting base and wiring con-
Owner's Manual - Page 7
...you are sleeping or the associated zone is unoccupied. ■ Set the right lever (red mark) to the temperature you are sleeping or the associated zone is unoccupied.
7
LOW TEMPERATURE...Heating: ■ Set the left lever (blue mark) to the tempera-
NOTE: You may override the time program by Honeywell
M641A
Fig. 1-Setting high and low temperature setting levers.
69-0432-1 For Cooling...
Owner's Manual - Page 8
...
Power is supplied to the clock by two AAA alkaline batteries (included). We recommend Energizer® batteries. Install batteries in thermostat as shown in Fig. 2. Once a year or when batteries are dead, replace with two new AAA alkaline batteries.
BATTERY LOCATION FOR (2) AAA BATTERIES; INSTALL WITH POSITIVE ENDS UP
M7188
Fig. 2-Inserting...
Owner's Manual - Page 9
...When time is correctly set, the time indicator
arrow (see Fig. 3) will point to the current time
by moving the minute hand carefully in 10-minute
increments. Adjust the clock to the correct ...band of the program dial.
DO NOT reverse the
minute hand. wise
direction. Setting the Clock
Lift thermostat flip-up cover and you'll find
the 24-hour program dial, slotted in a clock- MINUTE ...
Owner's Manual - Page 11
.... The slots on the program dial until it straight into the selected notch on the program dial (Fig. 4) are included with your thermostat. A heating program is completely seated.
■ Lift thermostat flip-up cover and you'll find the 24-hour program dial.
the blue pins start the high-temperature period; Programming
You...
Owner's Manual - Page 12
... change a pin if it is engaged with the pins supplied. You can set up to six temperature changes with the program index wheel. ■ On heating/cooling systems, be sure to reset the pins when the seasons change. DO NOT attempt
to change the lever positions.
12
69-0432-1 pin is inserted...
Owner's Manual - Page 14
... blue pin. if the program indicator shows red, the higher temperature is in effect;
Setting the Cooling Program
■ Decide when you want the temperature to reach the comfort level.
Using the manual ...want the energy saving period to start gives the air conditioner time to cool the house before or after a program change. The manual program advance button enables immediate, one -half...
Owner's Manual - Page 15
... or Move system switch to HEAT
COOL position.
1
position.
-fuse or circuit breaker.
See manufacturer's instructions.
Firmly tighten all terminal screws.
-airflow at register. If blown or tripped, replace fuse or reset breaker.
-furnace power switch. Move switch to the following. Turn Off power. Troubleshooting
Your Honeywell Trol-A-Temp® Thermostat requires little or no...
Owner's Manual - Page 17
... is set at AUTO. Cooling should be open .
IF SYSTEMS DO NOT OPERATE, CONTACT A QUALIFIED SERVICE TECHNICIAN.
(continued)
69-0432-1 damper should start ; Move temperature setting levers on the appropriate zone thermostat 5° F [3° C] below room temperature. are not correct.
17
ACTION
HEATING-Make sure zone 1 system switch is set at HEAT and fan switch is...
Owner's Manual - Page 18
... blown or breaker tripped, replace or reset.
Move to COOL position. If fuse is closed . -other.
18
ACTION Move switch to ON position. Contact a qualified service technician for proper operation.
-thermostat connections.
-airflow at register. May be turned Off.
-cooling equipment for assistance.
(continued) 69-0432-1 Zone damper may be in OFF or HEAT position. 1
-fuse or...
Owner's Manual - Page 19
...call a qualified Trol-A-Temp® customer service at or service technician, 1-800-828-8367 for drafts or radiant heat.
-calibration of thermometer.
Troubleshooting (continued)
PROBLEM Clock does not run. Thermostat setting and thermometer reading disagree.
Reinstall thermostat wallplate or subbase. Thermostat should be about 5 ft [1.5m] above floor on heating-only system. Contact...
Owner's Manual - Page 20
... additional (separate)
the clock is Off.
1. Spring fingers on thermostat are 1. Limit switch contacts stuck open. 3. Free or replace limit switch.
4. Rebend spring fingers to power 1. Short in clock power supply wiring. 2.
System power is inadequate. Restore power.
2. Replace transformer.
1. Voltage at Clock Terminals
AC VOLTAGE AT C-R TERMINALS
0 Vac
Up to 15 Vac.
15...
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.
MOVE INDICATOR TO 0.1A
M8596
Fig. 6-Heat anticipator setting.
21
69-0432-1 The heat anticipator must be set at 0.1A for proper system operation. See Fig. 6.
Owner's Manual - Page 22
Allow at the factory and should only need adjustment if it
was accurately calibrated at least five minutes for the cover
thermometer to touch the thermometer or breathe on a table near a thermometer of known accuracy. then compare the readings.
M1810
Fig. 7-Thermometer adjustment.
22
69-0432-1
Replace thermostat cover and put the system into...
Owner's Manual - Page 23
If you call, please 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 have the following information available: Make and model of your furnace, old thermostat and air conditioner.
23
69-0432-1
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