Honeywell Q682 Thermostat User Manual

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T8190A/191108AJ, Q682  
Heating or Cooling  
Thermostat and Wallplate  
or Heating/Cooling  
Thermostat and Subbase  
D.F. Rev. 9-94  
©Honeywell Inc. 1994 Form Number 69-0643—1  
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Welcome…  
Recycling Notice  
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 awaken-  
ing (or returning home) to a comfortable  
temperature.  
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 of an old  
control containing mercury in a sealed tube.  
Read this manual to learn how to use your  
new thermostat.  
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Table of Contents  
Page  
Features of Your Thermostat ............................................................................................................ 4  
Setting the Temperature .................................................................................................................. 7  
Inserting Timer Batteries ................................................................................................................... 8  
Setting the Timer............................................................................................................................... 9  
Programming................................................................................................................................... 10  
Setting Subbase Switches .............................................................................................................. 13  
Troubleshooting .............................................................................................................................. 14  
Servicing the Thermostat ................................................................................................................ 22  
Cycle Rate Adjustment ............................................................................................................... 22  
Thermometer Adjustment........................................................................................................... 23  
Warranty.......................................................................................................................................... 27  
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FeaturesOf Your  
Thermostat  
1 FLIP-UP COVER. Lift it up to set clock for  
energy saving and normal temperature  
periods.  
2
3
4
THERMOSTAT COVER. Lift up and remove  
to adjust heat anticipator.  
THERMOMETER. Provides accurate room  
temperature reading.  
TEMPERATURE SETTING LEVERS. Left  
4
1
2
(
blue mark) controls the low temperature,  
right (red mark) controls the high tempera-  
ture.  
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 AM or PM time to  
the time indicator.  
7
TIME INDICATOR. Arrow head (triangle  
shape) indicates low (blue) temperature  
setting or high (red) temperature setting in  
control on program index wheel. Also  
indicates time on 24-hour dial.  
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M7349  
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8
9
PROGRAM INDEX WHEEL. Controls high  
and low temperature at specific time of day  
as set by program pins.  
PROGRAM PINS. Must be inserted into 24-  
hour timer dial slots to control program  
index wheel.  
5
6
10  
14  
1
0 PIN SLOTS. Located on 24-hour dial at 10-  
minute intervals for program pin insertion.  
1
1 PROGRAM DIAL. 24-hour dial with light  
band to indicate daytime and dark band to  
indicator nighttime.  
1
2 HEAT ANTICIPATOR SCALEPLATE.  
Calibrated to match the heating system  
current draw in amperes.  
1
3 ANTICIPATOR SETTING LEVER. Must be  
adjusted to match the heating system  
primary control current.  
9
11  
8
7
12  
13  
M7350  
1
4 MERCURY BULB AND BIMETAL ELE-  
MENT (2). Provide automatic temperature  
control by switching the heating or cooling  
system on or off.  
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1
5 WALLPLATE (Included with thermostat.)  
Provides mounting base and wiring  
connections for heating-only or cooling-only  
thermostat.  
15  
M2421  
1
6 SUBBASE (Optional, 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.  
O
B
R
G
W
Y
16  
FAN  
COOL  
ON  
AUTO  
HEAT  
OFF  
M 719  
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Setting theTemperature  
ForHeating:  
Set the left lever (blue mark) to the energy  
saving temperature you want when you are  
sleeping or your home is unoccupied.  
HIGH  
LOW TEMPERATURE  
SETTING LEVER  
Set the right lever (red mark) to the tempera-  
ture you want for normal comfort periods.  
TEMPERATURE  
SETTING  
LEVER  
5
0
60 70  
80  
NOTE: You may override the time program by  
setting both the red and blue levers to the  
same temperature setpoint.  
5
0 60 70 80  
ForCooling:  
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  
saving temperature you want when you are  
sleeping or your home is unoccupied.  
M8586  
Fig. 1—Setting high and low temperature  
setting levers.  
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InsertingTimer Batteries  
BATTERY LOCATION FOR  
2) AAA BATTERIES;  
INSTALL WITH POSITIVE  
ENDS UP  
Power is supplied to the timer by the 24 Vac  
transformer, by two AAA alkaline batteries  
(
(included), or by the heating or cooling control  
circuit. Backup batteries may be installed to  
supply power to the timer if power is interrupted  
when using a 24 Vac powering method. 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. Properly dispose of old  
batteries.  
M8585  
Fig. 2—Inserting timer batteries.  
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the knob carefully in a clockwise  
hours. Do NOT reverse the knob, or damage to  
timer mechanism may occur.  
direction 23  
Setting theTimer  
Lift thermostat flip-up cover and you’ll find the  
4-hour program dial, slotted in 10-minute  
2
increments. Adjust the timer to the current  
time by carefully turning the knob clockwise  
PROGRAM DIAL  
.
DO NOT reverse the knob.  
PROGRAM  
PIN (6)  
When time is correctly set, the time indicator  
arrow (triangle shape) will point to the correct  
time and corresponding daytime (light) or  
night-time (dark) band of the program dial.  
See Fig. 3  
TIMER  
SETTING  
KNOB  
TIME  
INDICATOR  
ARROW  
Example: For 11 PM, the time indicator arrow  
will point directly to the dark band. For 11  
AM, the arrow will point to the light band.  
TIME INDICATOR ARROW  
DaylightSavingTime  
M 821  
When Daylight Saving Time starts, move the  
knob carefully in a clockwise  
direction one  
Fig. 3—Setting the timer.  
hour. When Daylight Saving Time ends, move  
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Programming  
You can program your thermostat to automati-  
cally lower and raise the temperature one or  
more times every 24 hours, depending on the  
number of program pins used.  
2
4-HOUR PROGRAM DIAL  
(
GRAY AREA FOR NIGHT SETTINGS)  
FLIP-UP  
COVER  
Before setting your program  
Notice the slots on the program dial (Fig. 4).  
The dial is slotted for the program pins that can  
be inserted at 10-minute intervals.  
PROGRAM  
PINS  
THERMOSTAT  
COVER  
Lift thermostat flip-up cover and you will find  
the 24-hour program dial. The slots on the  
program dial (Fig. 4) are for the program pins  
that can be inserted at 10-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 AM for high  
PROGRAM  
PIN SLOT  
PROGRAM INDEX WHEEL  
TIME INDICATOR ARROW  
PROGRAM  
PIN STORAGE  
M7348  
Fig.4—Programcomponents.  
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reset the pins when the seasons change.  
You will also probably want to change the  
lever positions.  
pins are located in the program pin storage  
area. You can set up to six temperature  
changes with the pins supplied. We recom-  
mend at least five hours for each energy  
saving period.  
To change the pins or add a new energy  
savings period:  
To set the heating program:  
Decide when you want the temperature to  
reach the comfort level. Find the notch on the  
dial that is one-half hour before this time and  
insert a red pin. The high temperature is in  
effect. The half-hour head start gives the  
furnace time to heat the house before you  
awaken or arrive home.  
Decide when you want the energy saving  
period to start and insert a blue pin at the  
notch that corresponds to this time. After the  
blue pin engages, the low temperature is in  
effect. The furnace will be off until room  
temperature drops to the energy saving  
setpoint.  
To insert a pin, push it straight into the  
selected notch on the program dial until it is  
completely seated.  
To remove a pin, press against the  
program dial and pull the pin straight out.  
DO NOT attempt to change a pin if it is  
engaged with the program index wheel.  
On heating/cooling systems, set the  
subbase switches to desired positions. See  
Setting Subbase Switches section.  
On heating/cooling systems, you must  
You can set both a day and a night program.  
See Fig. 5 for program examples.  
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WINTER  
PROGRAM  
TEMPERATURE PIN IN  
SUMMER  
PROGRAM  
TEMPERATURE PIN IN  
To set the cooling program:  
°
F
°C  
14  
CONTROL  
°F  
°C  
CONTROL  
Decide when you want the temperature to  
reach the comfort level. Find the notch on the  
dial that is one-half hour before this time and  
insert a blue pin. The low temperature is in  
effect. The half-hour head start gives the air  
conditioner time to cool the house before you  
awaken or arrive home.  
NIGHT  
BEGINS  
58  
BLUE  
80  
27  
RED  
ENERGY 10:00 PM  
SAVING  
PERIOD  
ENDS  
68  
24  
27  
24  
2
0
RED  
BLUE  
RED  
75  
80  
75  
BLUE  
RED  
6:00 AM  
DAY  
BEGINS  
58  
14  
20  
ENERGY  
SAVING  
PERIOD  
7
:30 AM  
ENDS  
:00 PM  
68  
BLUE  
4
M1690B  
Decide when you want the energy saving  
period to start and insert a red pin at the  
notch that corresponds to this time. After the  
red pin engages, the high temperature is in  
effect. The air conditioner will be off until the  
room temperature rises to the energy saving  
setpoint.  
Fig. 5—Programming examples.  
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Setting Subbase Switches (if applicable)  
The subbase system switch controls system  
operation as follows:  
The subbase fan switch controls fan opera-  
tion as follows:  
HEAT—Heating system is controlled by the  
thermostat. Cooling system is off.  
COOL—Cooling system is controlled by the  
ON—Fan operates continuously.  
AUTO—Fan operates with cooling equipment as  
controlled by the thermostat or with the  
heating equipment as controlled by the  
plenum fan switch. In electric heat, heat  
pump and fan coil systems, the fan is  
controlled by the thermostat in heating and  
cooling.  
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 cooling-only applications, only cooling  
will operate. In heating-only applications, only  
heating will operate.  
To switch positions, use thumb or index  
finger to slide the lever to the desired position.  
For proper circuit operation, switch lever must  
stop in detent over desired function indicator  
mark.  
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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.  
2
Fuse or circuit breaker.  
If blown or tripped, replace fuse or  
reset breaker.  
Move switch to ON .  
Furnace power switch may be  
OFF.  
Pilot flame may be out.  
Relight pilot flame according to furnace  
manufacturer instructions.  
Turn off power to furnace. Check for  
correct terminal hookups. Repair any  
frayed or broken wires. Firmly tighten  
all terminal screws. Turn on power.  
Thermostat connections.  
Other.  
Contact a qualified service technician  
for assistance.  
(continued)  
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Troubleshooting (Continued)  
Problem  
Check  
Action  
Energy saving  
temperature  
program is  
— Program dial for proper day  
Turn timer ahead 12 hours. Turn  
knob clockwise  
or night phase.  
only.  
12 hours.  
Rooms do not  
warm up at the  
programmed  
time.  
— Timer program for heating  
system may need more time  
to warm up rooms.  
Move red pin one-half hour earlier  
on the program dial.  
2
Temperature  
change occurs  
— Program pins for correct time  
locations.  
Relocate pins to desired settings.  
at the wrong time.  
Room temperatures — Positions of thermostat set  
Reset to desired temperatures.  
are not correct.  
point levers.  
Position of subbase system  
switch (heating-cooling model).  
Move to desired operating position.  
(continued)  
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Troubleshooting (Continued)  
Problem  
Check  
Action  
Room  
temperatures  
are not correct  
—Thermostat circuits.  
Heating mode—Move temperature  
setting levers 5° F [3° C] above room  
temperature. Heating system should  
start.  
(continued).  
Cooling mode—Move temperature  
setting levers 5° F [3° C] below room  
temperature. Cooling system should  
start. If the system does not operate,  
call a qualified service technician.  
Burner-on time  
too short.  
—Anticipator setting. (See Fig. 6  
for anticipator location.)  
Increase anticipator setting by 0.05  
(e.g., 0.4 to 0.45). Observe burner  
operation.  
Burner-on time too —Anticipator setting. (See Fig. 6  
long. for anticipator location.)  
Decrease anticipator setting by 0.05  
(e.g., 0.45 to 0.4). Observe burner  
operation.  
(
continued)  
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Troubleshooting (Continued)  
Problem  
Check  
Action  
No cooling.  
—System switch may be in OFF  
or HEAT position.  
Move switch to COOL position.  
1
Fuse or circuit breaker.  
If fuse is blown or breaker tripped,  
replace or reset. If fuse blows again,  
call the heating and air conditioning  
dealer.  
Condenser switch position.  
Located outdoors and may  
be turned off.  
Thermostat connections.  
Check for correct terminal  
hookups. Repair any frayed  
or broken wires. Firmly  
Move to ON position.  
Turn off power to cooling system.  
tighten all terminal screws.  
Other.  
Contact a qualified service technician  
for assistance.  
(
continued)  
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Troubleshooting (Continued)  
Problem  
Check  
Action  
Thermostat setting —Level position of thermostat.  
and thermometer  
Reinstall thermostat wallplate or  
subbase. Use a spirit level.  
Thermostat should be about 5 ft  
[1.5m] above floor on an inside wall.  
Contact qualified service technician for  
change of location.  
reading disagree.  
—Area around thermostat for  
drafts or radiant heat.  
Calibration of thermometer.  
See Thermometer Adjustment section.  
Timer does not run. —Thermostat connections at the  
two C terminals. If no  
3
connections, timer needs  
batteries in to run.  
Batteries may not have been  
installed.  
Install as shown in Fig. 2.  
Batteries may need  
replacement.  
Replace with two new AAA alkaline  
batteries as shown in Fig. 2.  
If new batteries are installed  
and timer still does not run.  
Replace thermostat.  
(
continued)  
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Troubleshooting (Continued)  
Problem  
Check  
Action  
Timer does not  
run (continued).  
—Voltage across the two C  
terminals.  
Remove thermostat from the wallplate  
or subbase and measure the voltage.  
Refer to Voltage at Timer Terminals  
table for cause and reaction.  
Pins in program dial. If pins are  
not completely seated in  
program dial, jamming with  
index wheel can occur.  
Push down on pins to make sure they  
are completely seated in program dial.  
Timer loses time.  
—Power may be interrupted.  
Make sure power is on. Reset timer.  
High limit control. If timer  
powered through system  
transformer, power to timer  
and equipment may be off  
on safety.  
Wire separate transformer to power  
timer, or install backup batteries as  
shown in Fig. 2.  
Filter may be clogged. Safety  
limit on equipment can cut off  
power to system.  
Replace filter and reset timer.  
(
continued)  
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Troubleshooting (Continued)  
Problem  
Timer loses time  
Check  
—Batteries may need  
Action  
Replace with two new AAA alkaline  
(continued).  
replacement.  
batteries as shown in Fig. 2.  
1
2
Not applicable on model used in heating-only system.  
Not applicable on model used in cooling-only system.  
3
If timer is not battery powered, timer may still use batteries for backup.  
If this Troubleshooting section did not solve  
the problem, call a qualified service technician  
or the Honeywell Customer Assistance Center,  
1
5
-800-468-1502, Monday - Friday, 7:00 AM to  
:30 PM Central time for additional assistance.  
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VoltageAtTimerTerminals  
ACVoltagesat  
C-CTerminals  
Vac.  
Check  
— System power off.  
Action  
— Restore power.  
0
Short in timer power supply wiring.  
Limit switch contacts stuck open.  
Transformer supplying power is  
burned out.  
— Replace wiring.  
— Free or replace limit switch.  
— Replace transformer.  
Up to 15 Vac.  
— System transformer used to power  
the timer is inadequate.  
— Use additional (separate)  
transformer.  
Additional (separate) transformer  
used to power the timer has  
inadequate voltage.  
— Install transformer with proper  
secondary voltage.  
15 to 30 Vac.  
— Spring fingers on thermostat not  
making proper contact with subbase  
terminals.  
— Rebend spring fingers to a 45  
degree angle to assure proper  
contact.  
Timer has failed.  
— Replace thermostat.  
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Servicing theThermostat  
Cycle Rate Adjustment  
The equipment should cycle on and off just  
enough to keep the room temperature close to  
the temperature lever settings.  
If the thermostat seems to cycle the heating  
system too fast or too slow, adjust the cycle rate  
by moving the anticipator setting lever one  
indicator mark at a time (Fig. 6). Observe the  
heating system operation after each adjustment.  
ANTICIPATOR  
SCALEPLATE  
ANTICIPATOR  
SETTING LEVER  
M7317  
NOTE: Most hot water systems require a setting  
of 1.2A.  
Fig. 6—Heat anticipator setting.  
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Thermometer Adjustment  
The thermometer was accurately calibrated at  
the factory and should only need adjustment if it  
has been dropped or mishandled.  
Replace thermostat cover and put the system  
into operation.  
If the setpoint lever and the thermometer  
reading do not agree, follow the procedure below.  
Remove thermostat cover and open the flip-up  
cover.  
THERMOMETER  
BACKSIDE OF  
SLOT  
FLIP-UP COVER  
Set the thermostat cover on a table near a  
thermometer of known accuracy.  
INSERT AND TURN  
SCREWDRIVER  
Allow at least five minutes for cover thermom-  
eter to sense area temperature; then compare  
the readings. Be careful not to touch the ther-  
mometer or breathe on it.  
If the readings are the same, replace the  
cover and put the system into operation.  
If the readings are different, insert a small  
screwdriver in the thermometer slot, shown in  
Fig. 7, and turn it until both thermometers read  
the same.  
M1810  
Fig. 7—Thermometer adjustment.  
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If you have questions regarding the installation and programming of your Honeywell thermostat,  
please visit our web site at www.honeywell.com/yourhome or call the 24-hour automated information  
line at 1-800-468-1502.  
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Limited One-Year Warranty  
Honeywell warrants this product, excluding battery, 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  
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:  
(ii)  
Honeywell Inc.  
in Canada  
Returned Goods Department  
Honeywell Limited/Honeywell Limitee  
740 Ellesmere Road  
1050 Berkshire Lane  
Plymouth, MN 55441-4437  
Scarborough, Ontario M1P2V9  
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 55440-  
0524.  
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Home and Building Control Home and Building Control  
Helping You Control Your World  
Honeywell Inc.  
985 Douglas Drive No.  
Honeywell Limited/Honeywell Limitée  
740 Ellesmere Road  
1
Golden Valley, MN 55422  
Scarborough, Ontario  
M1P 2V9  
Printed in U.S.A.  
www.honeywell.com/yourhome  

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