Honeywell T8095A-191108AJ User Manual
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 • • ©Honeywell Inc. 1994 • Form Number 69-0639—1
M3375
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.
Your new thermostat will automatically lower and
raise the temperature in your home one or more
times every 24 hours. This allows you to significantly lower your fuel costs, while awakening (or
returning home) to a comfortable temperature.
Recycling Notice
This control contains mercury in a sealed tube.
not
place control in the trash at the end of its
Do
useful life.
If this control is replacing a control that contains
mercury in a sealed tube, do
control in the trash.
not
M3375
place your old
Read this manual to learn how to use your new
thermostat.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of this control, or of an old control
containing mercury in a sealed tube.
If you have questions, call Honeywell Inc. at
1-800-468-1502.
2
Table of Contents
Features of Your Thermostat ............................................................................................................. 4
Setting the Temperature ..................................................................................................................... 7
Setting Subbase Switches ................................................................................................................. 8
Inserting Clock Batteries .................................................................................................................... 9
Setting the Clock ...............................................................................................................................10
Programming .................................................................................................................................... 11
Troubleshooting ................................................................................................................................15
Servicing the Thermostat .................................................................................................................. 23
Cycle Rate Adjustment .................................................................................................................23
Thermometer Adjustment .............................................................................................................24
Warranty ...........................................................................................................................................27
3 69-0639—1
Page
Features of Your
Thermostat
1
4
1 FLIP-UP COVER. Lift up to set clock for
energy savings and normal temperature
periods.
3
2
M7318
2 THERMOSTAT COVER. Lift up and
remove to adjust heat anticipator.
3 THERMOMETER. Provides accurate room
temperature reading.
4 PROGRAM INDICATOR. Blue indicates low
temperature is in effect; red indicates high
temperature is in effect.
5 CLOCK. Provides a 24-hour slotted dial to
hold the programming pins.
6 CLOCK HANDS. Turn minute hand
clockwise to match the correct AM or
PM time to the time indicator.
7 TIME INDICATOR. Arrow head (triangle
shape) indicates blue (low) temperature
setting or red (high) temperature setting in
control on program index wheel. Also
indicates time on 24-hour dial.
8 PROGRAM INDEX WHEEL. Controls high
and low temperature at specific time of day
as set by program pins.
4
9 TEMPERATURE SETTING LEVERS. Left
(blue mark) controls low temperature and
right (red mark) controls the high temperature.
10 PROGRAM PINS. Insert into 24-hour clock
dial slots to control program index wheel.
11 PIN SLOTS. Located on 24-hour dial at
10-minute intervals for program pin insertion.
12 PROGRAM DIAL. 24-hour dial with light
band to indicate daytime and dark band to
indicate nighttime.
13 MANUAL PROGRAM ADVANCE BUTTON.
Allows change from comfort to energy
savings setting and vice versa without
changing the program.
14 HEAT ANTICIPATOR SCALEPLATE.
Calibrated to match the heating system
current draw in amperes.
15 ANTICIPATOR SETTING LEVER. Adjust to
match the heating system primary control
current.
16 MERCURY BULB AND BIMETAL ELE-
MENT (2). Provide automatic temperature
control by switching the heating or cooling
system on or off.
6
5
12 8
10
11
7
13
9
15
14
16
M7316
5 69-0639—1
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
18
FAN
Y
AUTO OFF
HEATON
COOL
M1809
6
Setting the Temperature (Fig. 1)
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 tempera-
ture you want for normal comfort periods.
NOTE: You may override the time program by
setting both the red and blue levers to the
same temperature setpoint.
For Cooling:
■ Set the left lever (blue mark) to the tempera-
ture you want for normal comfort periods.
■ Set the right lever (red mark) to the energy
savings temperature you want when you are
sleeping or your home is unoccupied.
Fig. 1—Setting high and low temperature levers.
7 69-0639—1
LOW TEMPERATURE
SETTING LEVER
(BLUE MARK)
12
8
7
9
6
10
5
1
4
1
3
12
1
9
2
2
3
1
12
3
1
4
1
10
5
6
9
7
8
6
50
50
607080
60 70 80
HIGH
TEMPERATURE
SETTING
LEVER
(RED MARK)
M1520
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.
The subbase fan switch controls fan operation
as follows:
ON—Fan operates continuously.
AUTO—Fan operates with cooling equipment as
controlled by the thermostat or with heating
equipment as controlled by the plenum fan
switch. In electric heat, heat pump and fan coil
systems, the fan is controlled by the thermo-
stat in heating and cooling.
To switch positions, use thumb or index finger
to slide lever to desired position. Switch lever
must stop in detent over desired function
indicator mark for proper circuit operation.
8
Inserting Clock Batteries
Power is supplied to the clock by the 24 Vac
transformer. Backup batteries (not included) may
be installed to supply power to the clock when
power is interrupted. 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;
INSTALL WITH POSITIVE
ENDS UP
M7188
Fig. 2—Inserting Clock Batteries.
9 69-0639—1
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