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Chronotherm T8090a Heat Only
I have 4 wires at the t-stat ....blue,red,white & off white. i have terminals c ,w, and c. At on...
I have 4 wires at the t-stat ....blue,red,white & off white. i have terminals c ,w, and c. At on...
(Posted by falcn0413 3 years ago)
Want To Replace An Old Honeywell Thermostat Model With A Newer Updated Model.
I want to replace a manual Honeywell Chronotherm Thermostat with an updated digital type. The model ...
I want to replace a manual Honeywell Chronotherm Thermostat with an updated digital type. The model ...
(Posted by Wjvivola 3 years ago)
How Do I Get A New Thermostat Of This Model
(Posted by ruth6000 9 years ago)
Digital Replacement For T8090a?
Is there Honeywell digital replacement for T8090A? Steam boiler
Is there Honeywell digital replacement for T8090A? Steam boiler
(Posted by bipcar 12 years ago)
Popular Honeywell T8090A Manual Pages
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
Owner's Manual - Page 2
... your new Honeywell fuel saver thermostat.
The Honeywell name is replacing a control that contains mercury in the trash. at the end of an old control containing mercury in the trash at 1-800-468-1502.
69-0574-2
2 Welcome to the world of energy savings with your assurance of accurate control and reliable operation for instructions regarding...
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
Owner's Manual - Page 5
Must be inserted into 24-hour clock dial slots to energy savings setting and vice versa without changing the program.
12 HEAT ANTICIPATOR SCALEPLATE. Calibrated to match the heating ... or cooling system on 24-hour dial at 10-minute intervals for program pin insertion.
11 MANUAL PROGRAM ADVANCE BUTTON. Must be adjusted to match the heating system current draw in amperes.
13 ANTICIPATOR...
Owner's Manual - Page 6
Provides mounting base, wiring connections and manual switching control for heating-only or cooling-only thermostat.
15
16 Q682B SUBBASE. Provides mounting base and wiring connections for heating/cooling thermostat.
69-0574-2
16 6
M2421
R
G
FAN ON
AUTO
O B W
Y
HEAT
COOL OFF
M719 15 191108AJ WALLPLATE.
Owner's Manual - Page 8
... POSITIVE ENDS UP
M7188
Fig. 2-Inserting clock batteries.
69-0574-2
8
Once a year or when batteries are dead, replace with two new AAA alkaline batteries. Install batteries in thermostat as shown in Fig. 2. Backup batteries may be installed to supply power to the clock if power is supplied to the clock by the 24 Vac...
Owner's Manual - Page 10
... be inserted at 10:00 PM 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 The red pins...
Owner's Manual - Page 13
Start Or End Programs With Manual Program Advance Button
IMPORTANT:To prevent damage to the normal setting. After pressing the button, check the program indicator to accommodate temporary ...program change. if it shows red, the higher temperature is in effect; The manual program advance button enables immediate, one-time-only program changes to ensure the system is in effect. Using the...
Owner's Manual - Page 14
...Problem No heat.
69-0574-2
Check
Action
- If blown or tripped, replace fuse or reset breaker.
- Move switch to furnace. pilot flame. R and W thermostat connections. other problem.
Contact a qualified service... per furnace manufacturers instructions.
- Repair any frayed or broken wires.
Turn Off power to ON.
- Troubleshooting
Your Honeywell thermostat requires little or ...
Owner's Manual - Page 15
...0574-2
positions of subbase system switch. Rooms do not warm - Move to desired settings. up at the wrong
locations. programs pins for heating system.
position of thermostat setpoint
are not correct.
Action Turn timer ahead 12 hours. levers.
- Troubleshooting (continued)
Problem
Check
Energy savings
- program dial for proper day or
temperature program night phase...
Owner's Manual - Page 18
...)
69-0574-2
18 Contact qualified service technician for assistance.
- condenser switch position. Repair any frayed or broken wires. Contact a qualified service technician for change of thermostat.
Check
Action
- for drafts or radiant heat. other. Troubleshooting (continued)
Problem No cooling 1 (continued)
Thermostat setting and thermometer reading disagree. Located...
Owner's Manual - Page 19
if new batteries are installed and clock still does not run . Install as shown on page 22 for cause and reaction.
(continued)
69-0574-2 Replace thermostat. Troubleshooting (continued)
Problem
Thermostat setting and thermometer reading disagree (continued). calibration of thermometer.
-
Refer to run. 3 Batteries may need replacement
- If no connections, clock needs batteries in ...
Owner's Manual - Page 21
...-only system.
2 Not applicable on page 8. Action
Replace with two new AAA alkaline batteries as shown on model used in cooling-only system.
3 If clock is not battery powered, clock may need replacement. If this Troubleshooting section has not solved the problem, call your qualified heating service technician or Honeywell Customer Assistance Center, 1-800-468-1502, Monday...
Owner's Manual - Page 22
...Install transformer with subbase terminals.
2. Clock has failed.
1. Voltage At Clock Terminals
AC Voltge at C-C Terminals
0 Vac. Check
Action
1. System power off.
1. Short in clock power supply wiring.
3. Free or replace... angle to 30 Vac. Replace wiring. 3. the clock is burned out.
2.
Restore power.
2. Replace transformer.
1. Replace thermostat.
69-0574-2
22 Transformer...
Owner's Manual - Page 26
Before you have the following information available: make and model 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. If you call, please have questions regarding the installation and programming of furnace, old thermostat and air conditioner.
69-0574-2
26
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