Honeywell B/Q682 User manual

Heating/Cooling
Thermostat and Subbase or
Heating or Cooling Thermostat
and Wallplate
T8195A,B/Q682
OWNER’S MANUAL
69-0563-2

269-0563—2
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.
This thermostat meets California Title 24 requirements—mandatory installation of automatic
setback thermostats in new heating and cooling systems. During heating and cooling, this
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.
Read this manual to learn how to use your new thermostat.
Recycling Notice
This control contains mercury in a sealed tube. Do not place control in the trash at the end of
its useful life.
If this control is 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 regarding recycling and the
proper disposal of this control, or an old control containing mercury in a sealed tube.
If you have questions, call Honeywell Inc. at 1-800-468-1502.
M3375

369-0563—2
Table Of Contents
PAGE
Features Of Your Thermostat........................................................................................................... 4
Setting The Temperature ................................................................................................................. 7
Setting Subbase Switches................................................................................................................ 8
Inserting Timer Backup Batteries ..................................................................................................... 9
Setting The Timer ........................................................................................................................... 10
Programming .................................................................................................................................. 11
Troubleshooting .............................................................................................................................. 14
Servicing The Thermostat .............................................................................................................. 21
Warranty ......................................................................................................................................... 23

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8PROGRAM INDEX WHEEL. Controls high
and low temperature at specific time of
day as set by program pins.
9PROGRAM PINS. Must be inserted into
24-hour timer dial slots to control program
index wheel.
2
4
1
3M8723
Features Of Your Thermostat
1FLIP-UP COVER. Lift it up to set timer for
energy savings and comfort temperature
periods.
2THERMOSTAT COVER. Lift up to adjust
timer.
3THERMOMETER. Provides accurate room
temperature reading.
4TEMPERATURE SETTING LEVERS. Left
(blue mark) controls the low temperature, right
(red mark) controls the high temperature.
5TIMER. This timer provides a 24-hour
slotted dial to hold the programming pins.
6TIMER SETTING KNOB. Turn clockwise
to match the correct a.m. or p.m. time to
the time indicator.
7TIME INDICATOR. Arrow head indicates
time for 24-hour dial.

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M8744
12
6911 5
10 87M8745
10 PIN SLOTS. Located on 24-hour dial at
10-minute intervals for program pin
insertion.
11 MERCURY BULB AND BIMETAL ELEMENT
(2). Provide automatic temperature control
by switching the heating or cooling system
on and off.
12 WALLPLATE. Provides mounting base
and wiring connections for heating or
cooling thermostat without system or fan
switching.

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13 Q682 SUBBASE. Provides mounting base,
wiring connections and manual switching
control for heating/cooling thermostat.
AUTO OFF COOL HEATON
FAN
B
O
W
Y
R
G
M1551
13

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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 tem-
perature 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.
50 60 70 80
50 60 70 80
HIGH
TEMPERATURE
SETTING
LEVER
LOW TEMPERATURE
SETTING LEVER
M8586

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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 system is controlled by the
thermostat. Heating system is Off.
OFF— Both the heating and cooling systems
are Off. If the fan switch is at the AUTO
position, the fan is also off.
ON—In a cooling only application, only cooling
operates. In a heating only application, only
heating operates.
The subbase fan switch controls fan
operation as follows:
ON—Fan operates continuously.
AUTO—Fan operates with cooling equipment
as contolled by the thermostat or with the
heating equipment as controlled by the
thermostat in heating and cooling.
To switch positions, use thumb or index
finger to slide lever to desired position. Switch
lever must stop in the detent over desired
function indicator mark for proper circuit
operation.

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Inserting Timer Batteries
(Optional)
Power is supplied to the timer by the 24 Vac
transformer. Two AAA alkaline backup batter-
ies (not included) may be installed to supply
power to the timer if power is interrupted due to
power failure. Install the batteries in the
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
M8585
Fig. 2—Inserting timer backup batteries.

10 69-0563—2
Setting The Timer
Lift thermostat flip-up cover and you will find
the 24-hour program dial, slotted in 10-minute
increments. Adjust the timer to the current time
by carefully turning the knob clockwise Do
not reverse the knob.
When time is correctly set, the Time
Indicator Arrow (See Fig. 3) will point to the
correct time and corresponding daytime (light)
or nighttime (dark) band of the program dial.
EXAMPLE: For 11 p.m., time indicator arrow will
point directly to dark band on dial. For 11 a.m.,
the arrow will point to light band on dial.
Daylight Savings Time
When Daylight Savings Time starts, carefully move the knob clockwise one hour. When
Daylight Savings Time ends, carefully move the knob clockwise 23 hours. Do
not reverse
the knob or damage to the timer mechanism may occur.
Fig. 3—Setting the timer.
TIMER
SETTING
KNOB
TIME
INDICATOR
ARROW
M821A
PROGRAM DIAL
PROGRAM
PIN (6)