Honeywell Q682 Thermostat User Manual

Home

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

M3375

Welcome…

Recycling Notice

M3375

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.

69-0643—1

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

69-0643—1

FeaturesOf Your

Thermostat

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

energy saving and normal temperature

periods.

THERMOSTAT COVER. Lift up and remove

to adjust heat anticipator.

THERMOMETER. Provides accurate room

temperature reading.

TEMPERATURE SETTING LEVERS. Left

(

blue mark) controls the low temperature,

right (red mark) controls the high tempera-

ture.

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.

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.

M7349

69-0643—1

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.

0 PIN SLOTS. Located on 24-hour dial at 10-

minute intervals for program pin insertion.

1 PROGRAM DIAL. 24-hour dial with light

band to indicate daytime and dark band to

indicator nighttime.

2 HEAT ANTICIPATOR SCALEPLATE.

Calibrated to match the heating system

current draw in amperes.

3 ANTICIPATOR SETTING LEVER. Must be

adjusted to match the heating system

primary control current.

M7350

4 MERCURY BULB AND BIMETAL ELE-

MENT (2). Provide automatic temperature

control by switching the heating or cooling

system on or off.

69-0643—1

5 WALLPLATE (Included with thermostat.)

Provides mounting base and wiring

connections for heating-only or cooling-only

thermostat.

M2421

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.

FAN

COOL

AUTO

HEAT

OFF

M 719

69-0643—1

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

60 70

NOTE: You may override the time program by

setting both the red and blue levers to the

same temperature setpoint.

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.

69-0643—1

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.

69-0643—1

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

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

69-0643—1

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.

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.

69-0643—1

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.

69-0643—1

WINTER

PROGRAM

TEMPERATURE PIN IN

SUMMER

PROGRAM

TEMPERATURE PIN IN

To set the cooling program:

°C

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

BLUE

RED

ENERGY 10:00 PM

SAVING

PERIOD

ENDS

RED

BLUE

RED

BLUE

RED

6:00 AM

DAY

BEGINS

ENERGY

SAVING

PERIOD

:30 AM

ENDS

:00 PM

BLUE

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.

69-0643—1

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.

69-0643—1

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.

—

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)

69-0643—1

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.

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)

69-0643—1

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)

69-0643—1

Troubleshooting (Continued)

Problem

Check

Action

No cooling.

—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. 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)

69-0643—1

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

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)

69-0643—1

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)

69-0643—1

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.

Not applicable on model used in heating-only system.

Not applicable on model used in cooling-only system.

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,

-800-468-1502, Monday - Friday, 7:00 AM to

:30 PM Central time for additional assistance.

69-0643—1

VoltageAtTimerTerminals

ACVoltagesat

C-CTerminals

Vac.

Check

— System power off.

Action

— Restore power.

—

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.

69-0643—1

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.

69-0643—1

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.

69-0643—1

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.

69-0643—1

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,

(

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.

69-0643—1

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

Golden Valley, MN 55422

Scarborough, Ontario

M1P 2V9

Printed in U.S.A.

www.honeywell.com/yourhome

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