Honeywell BQ682 Thermostat User Manual

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Heating/Cooling  
Thermostat and Subbase or  
Heating or Cooling Thermostat  
and Wallplate  
T8195A,B/Q682  
OWNER’S MANUAL  
69-0563-2  
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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.  
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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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PROGRAM INDEX WHEEL. Controls high  
and low temperature at specific time of  
day as set by program pins.  
Features OfYour Thermostat  
1
FLIP-UP COVER. Lift it up to set timer for  
energy savings and comfort temperature  
periods.  
PROGRAM PINS. Must be inserted into  
2
4-hour timer dial slots to control program  
2
3
4
THERMOSTAT COVER. Lift up to adjust  
timer.  
THERMOMETER. Provides accurate room  
temperature reading.  
TEMPERATURE SETTING LEVERS. Left  
index wheel.  
4
1
2
(
blue mark) controls the low temperature, right  
(red mark) controls the high temperature.  
5
6
TIMER. This timer provides a 24-hour  
slotted dial to hold the programming pins.  
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.  
M8723  
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5
6
11  
12  
M8744  
7
M8745  
10  
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1
0 PIN SLOTS. Located on 24-hour dial at  
0-minute intervals for program pin  
insertion.  
1 MERCURYBULBANDBIMETALELEMENT  
2). Provide automatic temperature control  
12 WALLPLATE. Provides mounting base  
and wiring connections for heating or  
cooling thermostat without system or fan  
switching.  
1
1
(
by switching the heating or cooling system  
on and off.  
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1
3 Q682 SUBBASE. Provides mounting base,  
wiring connections and manual switching  
control for heating/cooling thermostat.  
O
B
R
G
W
Y
13  
FAN  
COOL  
ON  
AUTO  
HEAT  
OFF  
M1551  
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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.  
HIGH  
LOW TEMPERATURE  
SETTING LEVER  
TEMPERATURE  
SETTING  
LEVER  
Set the right lever (red mark) to the tem-  
perature you want for normal comfort periods.  
50  
60 70  
80  
NOTE: You may override the time program by  
setting both the red and blue levers to the  
same temperature setpoint.  
50 60 70 80  
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.  
M8586  
Fig. 1—Setting high and low  
temperature levers.  
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Setting Subbase Switches  
if applicable)  
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.  
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.  
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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BATTERY LOCATION FOR  
(2) AAA BATTERIES;  
INSTALL WITH POSITIVE  
ENDS UP  
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.  
M8585  
Fig. 2—Inserting timer backup batteries.  
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PROGRAM DIAL  
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  
PROGRAM  
PIN (6)  
TIMER  
SETTING  
KNOB  
by carefully turning the knob clockwise  
not reverse the knob.  
Do  
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.  
TIME  
INDICATOR  
ARROW  
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.  
M821A  
Fig. 3—Setting the timer.  
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.  
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pin storage area. You can set up to six tempera-  
ture changes with the pins supplied. We  
recommend at least five hours for each energy  
savings period.  
Programming  
You can program your thermostat to  
automatically lower and raise the temperature  
one or more times every 24 hours.  
2
4-HOUR PROGRAM DIAL  
(
GRAY AREA FOR NIGHT SETTINGS)  
Before Setting Your Program  
FLIP-UP  
COVER  
Lift thermostat flip-up cover and you’ll find  
the 24-hour program dial. The slots on the  
program dial (Fig. 4) are for the program pins  
which can be inserted at ten-minute intervals.  
Three red and three blue program pins are  
included with your thermostat. The red pins start  
the high-temperature period; the blue pins start  
the low-temperature period. A heating program  
has been preprogrammed. A red pin is inserted  
at 6:00 a.m. for high temperature (comfort  
period); a blue pin is inserted at 10:00 p.m. for  
low temperature (energy saving period). Two  
additional sets of pins are located in the program  
PROGRAM  
PINS  
THERMOSTAT  
COVER  
PROGRAM  
PIN SLOT  
PROGRAM INDEX WHEEL  
TIME INDICATOR ARROW  
PROGRAM  
PIN STORAGE  
M7348  
Fig. 4—Program components.  
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To change the pins or add a new energy  
savings period—  
program dial that’s one-half hour before this  
time and insert a red pin. The half-hour head  
start gives the furnace time to heat the house  
before you wake up or arrive home.  
To insert a pin, push it straight into the  
selected notch on the program dial until it’s  
completely seated.  
To remove a pin, press against program dial  
and pull the pin straight out. Do not attempt  
to change a pin if it is engaged with the  
program index wheel.  
WINTER  
SUMMER  
1
On heating-cooling systems, you must  
remove the program pins from the heating  
program to set new times for your cooling  
program. Write down your colors and time  
for reprogramming at the next heating  
season. Also, you may want to change the  
temperature setting lever positions.  
PROGRAM  
TEMPERATURE PIN IN  
PROGRAM  
TEMPERATURE PIN IN  
°
F
°C  
CONTROL  
°F  
°C  
CONTROL  
NIGHT  
BEGINS  
ENERGY 10:00 PM  
SAVING ENDS  
PERIOD 6:00 AM  
58  
14  
BLUE  
80  
27  
RED  
68  
20  
14  
20  
RED  
BLUE  
RED  
75  
80  
75  
24  
27  
24  
BLUE  
RED  
DAY  
BEGINS  
ENERGY 7:30 AM  
5
8
8
SAVING  
PERIOD  
ENDS  
6
BLUE  
4:00 PM  
Setting the Heating Program  
1
NOT APPLICABLE ON HEATING-ONLY MODEL.  
M8677  
Decide when you want the temperature to  
reach the comfort level. Find the notch on the  
Fig. 5—Program examples.  
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Decide when you want the energy savings  
period to start and insert a blue pin at the notch  
that corresponds to this time. After the blue pin  
engages, the furnace will be off until room  
temperature drops to the energy savings  
setpoint.  
Setting the Cooling Program  
Decide when you want the temperature to  
reach the comfort level. Find the notch on the  
program dial that’s one-half hour before this  
time and insert a blue pin. The half-hour head  
start gives the air conditioner time to cool the  
house before you wake up or arrive home.  
Decide when you want the energy savings  
period to start and insert a red pin at the notch  
that corresponds to this time. After the red pin  
engages, the air conditioner will be off until  
room temperature rises to the energy savings  
setpoint.  
You can set both a day and night program.  
See Fig. 5. for program examples.  
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Troubleshooting  
Your Honeywell thermostat requires little or no attention. Most problems can generally be  
traced to the following:  
Problem  
No heat.  
Check  
Action  
system switch. May be in OFF  
or COOL position.  
Move system switch to HEAT position.  
1
fuse or circuit breaker.  
If blown or tripped, replace fuse or reset  
breaker.  
furnace power switch. May be  
Off.  
Move switch to ON.  
pilot flame. May be out.  
Relight pilot flame per furnace manufacturers  
instructions.  
R and W thermostat  
connections.  
Turn Off power to furnace. Check for correct  
terminal hookups. Repair any frayed or broken  
wires. Firmly tighten all terminal screws. Turn  
On power.  
(
continued)  
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Troubleshooting (continued)  
Problem  
Check  
other problem.  
Action  
No heat (continued).  
Contact a qualified service technician for  
assistance.  
Energy savings  
temperature program  
program dial for proper day or  
night phase.  
Turn timer ahead 12 hours. Move setting knob  
clockwise  
only.  
12 hours off.  
Rooms do not warm  
up at programmed  
timer program for heating  
system. May need more time to program dial.  
warm up rooms.  
Move red pin one-half hour earlier on the  
time.  
2
Temperature change  
occurs at the wrong  
time.  
programs pins for correct time  
locations.  
Relocate pins to desired settings.  
Room temperatures  
are not correct.  
positions of thermostat setpoint Reset to desired temperatures.  
levers.  
position of subbase system  
Move to desired operating position.  
switch (heating-cooling model).  
(
continued)  
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Troubleshooting (continued)  
Problem  
Check  
Action  
Room temperatures  
are not correct  
thermostat circuits.  
HEATING-ONLY SYSTEM—Move temp-  
erature setting levers 5°F (3°C) above room  
temperature. Heating system should start. If  
the system does not operate, call a  
(continued).  
qualified service technician.  
COOLING-ONLY SYSTEM—Move temp-  
erature setting levers 5°F (3°C) below room  
temperature. Cooling system should start. If  
the system does not operate, call a  
qualified service technician.  
HEATING/COOLING SYSTEM—With system  
switch at HEAT, move temperature setting  
levers 5°F (3°C) above room temperature.  
Heating system should start. With system  
switch at COOL, move temperature setting  
levers 5°F (3°C) below room temperature.  
Cooling system should start. If the systems  
do not operate, call a qualified technician.  
(
continued)  
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Troubleshooting (continued)  
Problem  
Check  
Action  
No cooling.  
1
system switch. May be in OFF  
or HEAT position.  
Move switch to COOL position.  
fuse or circuit breaker.  
If fuse is blown or breaker tripped, replace or  
reset.  
condenser switch position.  
Located outdoors and may be  
turned OFF.  
Move to ON position.  
Y and R thermostat  
connections.  
Turn Off power to cooling system. Check for  
correct terminal hookups. Repair any frayed or  
broken wires. Firmly tighten all terminal  
screws.  
other  
Contact a qualified service technician for  
assistance.  
Timer is losing time.  
Power. May be interrupted.  
Make sure power is On.  
Make sure power is Off. Reset clock.  
(
continued)  
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Troubleshooting (continued)  
Problem  
Check  
Action  
Timer is losing time  
continued).  
high limit control. If clock  
powered through system trans-  
former, power to clock and  
equipment may be Off on  
safety.  
Wire separate transformer to power clock.  
(
filter. May be clogged. Safety  
limit on equipment may cut off  
power to system.  
Replace filter and reset clock.  
Timer does not run.  
voltage across the C and R  
terminals.  
Remove the thermostat from the wallplate or  
subbase, and measure the voltage. Refer to  
page 19 for cause and action.  
(
continued)  
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Troubleshooting (continued)  
Problem  
Check  
Action  
level position of thermostat.  
Reinstall thermostat subbase. Use a spirit  
level.  
Thermostat setting  
and thermometer.  
reading disagree.  
area around thermostat for  
drafts or radiant heat.  
Thermostat should be about 5 ft (1.5m) above  
floor on an inside wall. Contact qualified  
service technician for change of location.  
1
2
Not applicable on model used in heating-only system.  
Not applicable on model used in cooling-only system.  
If this Troubleshooting section has not solved the problem, call a qualified service technician or  
Honeywell Customer Assistance Center, Honeywell Inc., P.O., Box 524, Minneapolis, MN 55440-0524  
or call 1-800-468-1502, Monday-Friday, 7:00 a.m. to 5:30 p.m., Central time.  
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Voltage at Timer Terminals  
Ac Voltage at  
C-R Terminals  
Possible Cause Check  
Action  
1. Restore power.  
. Short in timer power supply wiring. 2. Replace wiring.  
0
Vac  
1. System power is Off.  
2
3
4
. Limit switch contacts stuck open.  
. Transformer supplying power is  
burned out.  
3. Free or replace limit switch.  
4. Replace transformer.  
Up to 15 Vac.  
1. System transformer used to power 1. Use additional (separate)  
the timer is inadequate. transformer.  
. Additional (separate) transformer  
used to power the timer has  
inadequate voltage.  
2
2. Install transformer with proper  
secondary voltage.  
15 to 30 Vac.  
1. Spring fingers on thermostat not  
making proper contact with  
subbase terminals.  
1. Rebend spring fingers to a  
45 degree angle to ensure  
proper contact.  
2. Timer has failed.  
2. Replace thermostat.  
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If the readings are different, insert a small  
screwdriver in the thermometer slot, shown in  
Fig. 6, and turn it until both thermometers read  
the same.  
Replace thermostat cover and put the  
system into operation.  
Servicing The Thermostat  
Thermometer Adjustment  
The thermometer has been accurately  
calibrated at the factory and should only  
need adjustment if it has been dropped or  
mishandled.  
If the setpoint lever and the thermostat  
reading do not agree, follow the procedure  
below.  
THERMOMETER  
BACKSIDE OF  
SLOT  
FLIP-UP COVER  
Remove thermostat cover and open the flip-  
up cover.  
INSERT AND TURN  
SCREWDRIVER  
Set the thermostat cover on a table near  
thermometer of known accuracy.  
Allow at least five minutes for cover ther-  
mometer to sense area temperature, then  
compare the readings. Be careful not to touch  
thermometer or breathe on it.  
M1810  
If the readings are the same, replace cover  
and put the system into operation.  
Fig. 6—Thermometer adjustment.  
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For all questions concerning this thermostat, please read and follow the instructions. If  
additional assistance is needed, call our toll-free Customer assistance Center group number at  
1
-800-468-1502, Monday-Friday, 7:00 a.m. - 5:30 p.m. Central time. Before you call, please have  
the following information available: make and model of furnace, thermostat and air conditioner.  
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Limited One-Year Warranty  
Honeywell warrants this product to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from  
the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace  
it (at Honeywell’s option) within a reasonable period of time.  
If the product is defective,  
(i) return it, with a bill of sale or other dated proof of purchase, to the dealer or contractor from which you purchased it, or  
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it, postage  
prepaid, to the following address:  
Honeywell Inc.  
Return Goods Department  
1050 Berkshire Lane  
Plymouth, MN 55441-4437  
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was  
caused by damage which occurred while the product was in the possession of a consumer.  
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY  
LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY  
FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the  
exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.  
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED  
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO  
THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation  
may not apply to you.  
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.  
If you have any questions concerning this warranty, please write our Customer Assistance Center, Honeywell Inc., P.O. box 524, Minneapolis, MN  
5
5440-0524 or call 1-800-468-1502, Monday-Friday, 7:00 a.m. to 5:30 p.m., Central time.  
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Automation and Control Solutions  
Honeywell International Inc. Honeywell Limited—Honeywell Limitée  
985 Douglas Drive North  
1
35 Dynamic Drive  
Golden Valley, MN 55422  
Scarborough, Ontario M1V 4Z9  
D.F. ©Honeywell Inc. 1994  
Rev. 12-94 Form Number 69-0563—2  

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