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

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

M3375

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.

2 69-0563—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

3 69-0563—2

Features Of Your Thermostat

1 FLIP-UP COVER. Lift it up to set timer for

energy savings and comfort temperature
periods.

2 THERMOSTAT COVER. Lift up to adjust

timer.

3 THERMOMETER. Provides accurate room

temperature reading.

4 TEMPERATURE SETTING LEVERS. Left

(blue mark) controls the low temperature, right
(red mark) controls the high temperature.

5 TIMER. This timer provides a 24-hour

slotted dial to hold the programming pins.

6 TIMER SETTING KNOB. Turn clockwise

to match the correct a.m. or p.m. time to
the time indicator.

7 TIME INDICATOR. Arrow head indicates

time for 24-hour dial.

8 PROGRAM INDEX WHEEL. Controls high

and low temperature at specific time of
day as set by program pins.

9 PROGRAM PINS. Must be inserted into

24-hour timer dial slots to control program
index wheel.

4

1

3

4 69-0563—2

2

M8723

9

5

6

11

10

8

7

M8745

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

M8744

12 WALLPLATE. Provides mounting base

and wiring connections for heating or
cooling thermostat without system or fan
switching.

5 69-0563—2

13 Q682 SUBBASE. Provides mounting base,

wiring connections and manual switching
control for heating/cooling thermostat.

O

B

W

Y

COOL

HEATON

M1551

13

FAN

R

G

AUTO OFF

6 69-0563—2

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 both the red and blue levers to the

same temperature setpoint.

For Cooling

Set the left lever (blue mark) to the tempera­ture 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.

LOW TEMPERATURE
SETTING LEVER

50

50

607080

60 70 80

HIGH
TEMPERATURE
SETTING
LEVER

M8586

Fig. 1—Setting high and low

temperature levers.

7 69-0563—2

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.

8 69-0563—2