Honeywell CT8602 Programmable Thermostat User Guide
- June 9, 2024
- Honeywell
Table of Contents
CT8602 Programmable Thermostat
Honeywell CT8602
PROGRAMMABLE THERMOSTAT
OWNER’S GUIDE
Seven Day Programmable Heat and/or Cool Low Voltage (20 to 30 Vac) Thermostat and Wallplate Model CT8602
Para obtener un documento con las instrucciones en español, por favor visite nuestro sitio de web a: www.honeywell.com/yourhome. Pour obtenir des notices techniques en français, veuillez consulter notre site web www.honeywell.com/yourhome.
Table of Contents
Step 1. Prepare for Installation …………………………………………………………………………………………………………………. 5 Step 2. Remove Old Thermostat ………………………………………………………………………………………………………………. 6 Step 3. Mount thermostat Wallplate …………………………………………………………………………………………………………… 7 Step 4. Wire Wallplate Terminals ………………………………………………………………………………………………………………. 8 Step 5. Install the Batteries ………………………………………………………………………………………………………………………. 9 Step 6. Set Fan Operation Switch …………………………………………………………………………………………………………….. 10 Step 7. Mount the Thermostat ………………………………………………………………………………………………………………….. 11 Step 8. Customize Your Thermostat ………………………………………………………………………………………………………….. 11 Step 9. Set the Clock ………………………………………………………………………………………………………………………………. 13 Step 10. Programming …………………………………………………………………………………………………………………………….. 14 Step 11. Operating Your Thermostat …………………………………………………………………………………………………………. 17 Step 12. Set the Fan and System Switches ……………………………………………………………………………………………….. 19 If You Have a Problem …………………………………………………………………………………………………………………………….. 19 Smart ResponseTM Technology ………………………………………………………………………………………………………………… 21 Wiring Diagrams …………………………………………………………………………………………………………………………………….. 22
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Total comfort temperature management with Smart ResponseTM Technology.
Congratulations! You made a smart choice by purchasing your new Honeywell
thermostat; the smart thermostat that; · Keeps you comfortable by
automatically calculating exactly when the furnace or air conditioning should
go on to
have the house at the desired comfort temperature by the time you wake up or
return home. · Saves the maximum amount of energy and money by automatically
remembering to adjust the temperature when
you leave home or go to sleep. · Provides the ultimate in comfort and
convenience. It comes preprogrammed. You can use the preprogrammed
schedule, or set your own.
This manual answers many of the questions that can arise as you become
familiar and comfortable with your Honeywell thermostat — the state of the art
in home comfort controls.
Read these instructions carefully. Failure to follow these instructions can
damage the product or cause a hazardous condition.
MERCURY NOTICE
If this thermostat 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.
MERCURY SWITCH
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TYPICAL LOCATION OF A MERCURY SWITCH IN A THERMOSTAT
M10614
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INCREASE TIME SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP AND SYSTEM TEST
SET WAKE TIMES AND SETPOINTS
SET CURRENT DAY AND TIME
SET LEAVE TIMES AND SETPOINTS
SET RETURN TIMES AND SETPOINTS
RETURN TO NORMAL OPERATIONS
ENTER INDEFINITE OR TIMED HOLD MODE
SET CURRENT OR PROGRAM DAY
CHANGE BETWEEN DAYLIGHT SAVINGS AND STANDARD TIME
Run Program
Set Current Day/Time
Hold Temp
Day
Daylight Time
Time
Wake
Heat/Cool Settings
Copy
Set Program
Leave
Return
Sleep
Heat Off Cool System
On Auto Fan
COPY ONE PROGRAMMED DAY TO ANOTHER DAY
DECREASE TIME SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP AND SYSTEM TEST
INCREASE TEMPERATURE SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP OPTIONS
DECREASE TEMPERATURE SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP
OPTIONS
DISPLAY INFORMATION SUCH AS PRESENT SETTINGS AND OUTDOOR TEMPERATURE
SET SLEEP TIMES AND SETPOINTS
SYSTEM SWITCH
FAN SWITCH
CHANGE BETWEEN
HEATING AND COOLING
SETPOINTS
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SHOWS WHEN THERMOSTAT IS IN THE PROGRAMMING MODE
SHOWS THERMOSTAT IS PROCESSING INFORMATION AND WAITING TO CALL FOR HEAT OR
COOL
DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES
SHOWS TEMPERATURE SETTING CHANGED FOR THIS PROGRAM PERIOD
SHOWS SMART
RESPONSE
IS CHANGING
THE TEMPERATURE
TO MEET THE
CURRENT PROGRAMS
Wait Set Program
Set Day/Time Temporary Setting
SHOWS VACATION HOLD DURATION
Recovery
AM
Hold for
Days Mon Tue Wed Thu Fri Sat Sun Repl Batt Room Filter
SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT SET TEMPERATURE
System Heat Off
Cool
SHOWS CURRENT SYSTEM SWITCH POSITION HEAT/OFF/COOL
SHOWS THAT THERMOSTAT IS “CALLING” FOR HEAT OR COOL
Wake Leave Return Sleep
SHOWS CURRENT DAY OR DAYS BEING PROGRAMMED
SHOWS THE BATTERIES ARE LOW AND MUST BE REPLACED
DST
DISPLAYS EITHER ROOM OR SET TEMPERATURES
SHOWS SMART RESPONSE IS OFF. CONVENTIONAL RECOVERY IS ON
SHOWS CURRENT PROGRAM PERIOD OR PERIOD BEING PROGRAMMED
SHOWS SYSTEM ON DAYLIGHT SAVINGS TIME
SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT ROOM TEMPERATURE
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STEP 1. PREPARE FOR INSTALLATION
Check Table 1, the compatibility chart, to make sure the thermostat is compatible with your system. If your system is not compatible, call Honeywell Customer Relations Center, toll-free, 1-800-468-1502.
Table 1. Compatibility Chart.
System Type Gas — Standing Pilot Gas — Electronic Ignition Gas-fired Boilers Gas –750 Millivolt Heat onlyb Oil-Fired Boilers Oil-Fired Furnace Electric Furnace Electric Air Conditioning Baseboard Electric (120/240 line volt)c Single Stage Heat Pump Multistage Heat Pumps/Multistage Equipment
Compatibility with CT8602 Yes Yes Yesa Yes
Yesa Yes Yes Yes No Yes No
a Compatible with 2-wire Honeywell and Taco zone valves. Not compatible with
3-wire zone valves or 2-wire White Rodgers no. 1361 zone valves.
b Millivolt system must be heat only. c Not compatible with any 120/240 volt
system.
Package Contents
· Thermostat · Wiring labels
· Wallplate · 3 Energizer® AA batteries
· Screws and anchors · Owners manual
Tools Required
· Screwdriver · Drill
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STEP 2. REMOVE OLD THERMOSTAT
Test your heating and cooling systems to make sure they work properly. If
either system does not work, contact
your local heating/air-conditioning dealer. To avoid compressor damage, do not
operate the cooling system when
outdoor temperature is below 50°F (10°C). Turn off power to the system at the
furnace or the fuse/circuit breaker panel. Carefully unpack your new
thermostat and wallplate. Save package of screws, instructions, and receipt.
Remove the cover from the old thermostat. If the cover does not snap off when
pulled firmly from the bottom, check
for a screw or screws used to lock on the cover. Loosen the screw or screws
holding the thermostat to the wallplate and lift the thermostat away.
Disconnect the wires from the old thermostat. As you disconnect each wire,
attach the enclosed labels with the old
terminal designation. If there are only two wires, they do not need to be
labeled. Wrap the wires around a pencil as
shown to keep them from falling back into the wall.
Special Installations
Read this section if you are replacing: · Clock thermostat with separate wires
for the clock. · Thermostat with six or more wires connected to it. ·
Thermostat in a heating only system with three wires.
WIRES THROUGH WALL OPENING
Replacing a Clock Thermostat that has C or C1 Clock Terminals
M5136
If you are replacing a Honeywell Chronotherm® Thermostat, you may find one or two wires going to the C or C1 clock terminals on the Chronotherm wiring wallplate. Do not allow them to touch, or you can damage the transformer. Disconnect the wires and wrap them separately using electrical tape. Do not wrap them together. Place the wires where they will not interfere with the operation of the new thermostat. Record the colors and terminal designation labels of the remaining wires.
Replacing a Thermostat that has Six or More Wires
If there are six or more wires (excluding clock wires attached to terminals),
you probably have a variation of a multistage heat pump or other multistage
system. This thermostat is not compatible with multistage systems, so return
the product to the place of purchase. If you have questions regarding this
thermostat please visit our web site at www.honeywell.com/yourhome, or call
the 24-hour automated information line at
1-800-468-1502.
Replacing a Thermostat that has Three Wires
If you have three wires for a heating only system and can operate the fan
using the fan ON switch this thermostat works with your system. However, some
hot water (zoned) heating systems also have three wires. Your thermostat will
work only if you install an isolating relay on these systems. For details,
call your local heating and/or cooling contractor.
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STEP 3. MOUNT THERMOSTAT WALLPLATE
Separate the wallplate from the thermostat by placing your thumb or fingers
between the bottom of the wallplate and the thermostat, and pulling the
wallplate up and away from the thermostat. See illustration at right.
Position the wallplate on the wall. Level the wallplate for appearance if
desired. Use a pencil to mark the two mounting holes that best fit the
application.
Remove the wallplate from the wall. Drill two 3/16 in. holes in wall (if
drywall) as shown. For materials such as plaster or wood, drill 7/32 in. holes
where marked. Gently, tap the (provided) anchors into the drilled holes until
they are flush with the wall.
Reposition the wallplate over the holes. Pull the wires through the wiring
opening. Loosely insert mounting screws into each of the holes.
Level the wallplate if desired. Thermostat functions properly when not level.
Tighten mounting screws.
WIRES THROUGH WALL
WALL
WALL ANCHORS (2)
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MOUNTING HOLES MOUNTING SCREWS M15044
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STEP 4. WIRE WALLPLATE TERMINALS
IMPORTANT
All wiring must comply with local codes and ordinances. If unsure about
household wiring procedures, call your local heating/air-conditioning
contractor.
Refer to the labels you placed on the wires when you removed the old
thermostat (see illustration). Match the letter of your old thermostat wire
with the corresponding
terminal letter on your new thermostat. Refer to Table 2. Remove the factory-
installed jumper connecting terminals R and RC if
wires are connected to both of those terminals. For wiring diagrams, if
needed, see pp 22-23. Loosen the terminal screws. Slip each wire beneath its
matching
terminal. Wraparound and straight connections are both acceptable, (see
illustration). Tighten the terminals.
FOR WRAPAROUND INSERTION STRIP 7/16 IN. (11 MM).
FOR STRAIGHT INSERTION STRIP 5/16 IN. (8 MM).
Y G
R W
M16425
M4826
Plug the hole in the wall with insulation to help prevent drafts from
adversely affecting thermostat operation.
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Table 2. Terminal Designations on Old and New Thermostats
Terminal on Old Thermostat
Connect To
Description
R, RHa, 4, V
R
Power
Rc, Ra
Rc
Power for cooling
W, W1, H
W
Heat
Y, Y1, M
Y
Cooling
G, F
G
Fan
O
O
Changeover in cool. (Single stage heat pump only).
Bb
Bb
Changeover in heat. (Single stage heat pump only).
Cc, Xc, Bb
Do not connect.
Transformer common
W2, H2 Y2
Do not continue installation. Second stage heat.
Call 1-800-468-1502.
Second stage cool.
a If both RH and R terminals are present on existing thermostat, remove jumper and connect Rh to R and R to Rc. b Do not connect both O and B when wiring to a single stage heat pump. Connect O to O. Tape off B. c Tape off end of the wire with electrical tape and push the taped wire back into the wiring hole in the wall.
STEP 5. INSTALL THE BATTERIES
IMPORTANT Three AA alkaline batteries are included with the thermostat.
Batteries must be installed for programming and operation of the thermostat
and the heating/cooling system.
Install the batteries in the wallplate so the positive terminals all point up
(see illustration).
If the thermostat is already mounted on the wall, remove the thermostat by
placing your thumb between the thermostat and wallplate and pulling the
thermostat up and away as shown.
WALLPLATE
B
R RC O W Y G
INSTALL 3 AA ALKALINE BATTERIES AS SHOWN, POSITIVE (+) TERMINALS TOWARD TOP.
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When the batteries are running low, a REPL BAT message flashes for one to two months before the batteries run out completely. Replace the batteries as soon as possible once the message flashes.
IMPORTANT
Although the thermostat has a low battery indicator, replace the batteries
once per year to prevent leakage and to prevent the thermostat and
heating/cooling system from shutting down due to lack of battery power in the
thermostat.
If you insert new batteries within 20 to 30 seconds of removing the old
batteries, the system retains the current time and day. If the display is
blank, the batteries are dead or installed incorrectly. You must reset the
time and day. Refer to Set the Clock for instructions.
M16424
As a precaution when leaving home for longer than a month, change batteries before leaving to prevent
60 70 80 90
the system from shutting down due to lack of power. Always use fresh alkaline batteries. Nonalkaline
60 70 80 90
batteries do not last as long. They also can leak, causing damage to the thermostat and the wall surface.
Honeywell recommends Energizer® batteries.
STEP 6. SET FAN OPERATION SWITCH
The thermostat fan operation switch, labeled FUEL SWITCH is factory set in the
F position. This is the correct setting for most systems. If your system is an
electric heat system, set the switch to E. The E setting allows the fan to
turn on immediately with the heating and cooling in a system where the G
terminal is connected.
FUEL SWITCH
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STEP 7. MOUNT THE THERMOSTAT
A. ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE.
B. PRESS LOWER EDGE OF CASE TO LATCH.
M12703
STEP 8. CUSTOMIZE YOUR THERMOSTAT
Your Honeywell CT8602 thermostat comes preset to the most commonly used
settings. The settings are: Gas or oil forced air furnace. Smart Response
technology on. Temperature °F. 12-hour clock format.
You can change any or all of these settings.
IMPORTANT Always press the keys with your fingertip or a similar blunt tool.
Sharp instruments like pens and pencil points can damage the keyboard.
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Press and hold down , , and , simultaneously until the screen shows. You now
can change any of these settings.
System Type (Feature Number 4)
System type options are: 1 = Gravity or steam system. 3 = Hot water, high
efficiency furnace (90% or better), or single stage heat pump. 6 = Gas or oil
forced air furnace (preset). 9 = Electric furnace.
To change your system type:
Press until display shows your furnace or boiler type.
Press Time
to move to next feature or
Run Program
to return to main display.
Smart ResponseTM Technology (Feature Number 13)
Smart Response technology options are: 0 = Smart Response technology on
(preset). 1 = Smart Response technology off.
To turn Smart Response technology on or off:
Press once.
Press Time
to move to next feature or
Run Program
to return to main display.
NOTE: See Smart Response technology (page 21) for information about this feature.
Temperature Format (Feature Number 14)
Temperature format options are: 0 = °F (preset). 1 = °C.
To change temperature format:
Press once.
Press Time
to move to next feature or
Run Program
to return to main display.
FEATURE NUMBER
OPTION M18750
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Time Format (Feature Number 16)
Time format options are: 0 = 12-hour clock (preset). 1 = 24-hour clock.
To change time format:
Press once.
Press
Run Program
to return to main display.
Heating Temperature Range Stops (Feature Number 34)
Temperature range options are: 90 = highest setting for heating setpoint
(preset) 40 to 89 = temperature range (1°F increments) heating setpoint can be
set to.
Cooling Temperature Range Stops (Feature Number 35)
Temperature range options are: 45 = lowest setting for cooling setpoint
(preset) 46 to 99 = temperature range (1°F increments) cooling setpoint can be
set to.
Factory Set Function (Feature Number 37)
Do not change this setting.
M18753
M18748
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STEP 9. SET THE CLOCK
M18754
Set Current Day and Time
NOTE: On initial power-up, the screen flashes 1:00 pm until you press a key.
Press . Set Current Day/Time
Press Day until screen shows current day.
Press Time
or
hour increments).
until screen shows current time. (Tapping the
Set Current Day/Time
will advance the time in one
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Press
Daylight Time
until “DST” displays if daylight savings time is in effect.
Press
Run Program
.
STEP 10. PROGRAMMING
The keyboard is located behind the thermostat cover. The three most frequently
used keys are near the display. Pressing displays the current temperature
settings. Pressing the and keys change the temperature. The thermostat
displays day, time, program period, temperature, system and fan settings.
There is an individual key for each of the four program periods: Wake –The
program period when you want the house at a comfortable temperature when you
get up and while you get ready for work or school. (This is a higher
temperature during the heating season and a lower temperature during the
cooling season). Leave –The program period you can set for an energy-saving
temperature while you are away at work or school. (This is a lower temperature
during the heating season and a higher temperature during the cooling season).
Return –The program period when you want the house at a comfortable
temperature for activities before bedtime. (This is a higher temperature
during the heating season and a lower temperature during the cooling season).
Sleep –The program period you can set for an energy-saving temperature while
you sleeping. (This is a lower temperature during the heating season and a
higher temperature during the cooling season).
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Table 3 can be helpful when planning your schedule of time and temperature settings. The thermostat default settings are shown in parentheses ( ).
Table 3. Personal Programming Table.
Monday Tuesday Wednesday Thursday Friday
Period Default Setting (Mon)
(Tue)
(Wed)
(Thu)
(Fri)
Wake Time (6:00AM)
Heata (70°F/21°C)
Coolb (78°F/25.5°C)
Leave Time (8:00AM)
Heata (62°F/16.5°C)
Coolb (85°F/29.5°C)
Return Time (6:00PM)
Heata (70°F/21°C)
Coolb (78°F/25.5°C)
Sleep Time (10:00PM)
Heata (62°F/16.5°C)
Coolb (82°F/28°C)
a Your heating setpoints cannot be higher than 90°F (32°C) or lower than 40°F (4.5°C). b Your cooling setpoints cannot be higher than 99°F (37°C) or lower than 45°F (7°C).
Saturday Sunday
(Sat)
(Sun)
Program the First Day
Start by programming the wake time and temperature for one day.
Press and release Wake .
Press Day until the desired day displays. (Mon, Tue, Wed, Thu, Fri, Sat, Sun)
Press time
or
until the desired time shows in the display.
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NOTE: Program times are in 15 minute intervals. For example, 8:00, 8:15, 8:30.
Press or until the desired wake temperature displays. The setpoint temperature range is 40°F to 90°F (4.5°C to 32°C) for heating and 45°F to 99°F (7°C to 37°C) for cooling.
Press Heat/Cool Settings
to switch between setpoints.
NOTE: Program times are the same for heating and cooling.
Press or until the display shows the desired temperature setpoint.
Press
, Leave
Return
or
Sleep
and repeat these steps for each program period. The First Day is now
programmed.
Repeat each step in Program the First Day for the rest of the week.
NOTE: After the first day is programmed, you can copy that day to any other day using procedure in Copy a Day.
Press
Run Program
when the entire week is programmed.
Copy a Day
Your thermostat can copy program settings from one day to another.
Press
Wake
,
, Leave
Return
or
Sleep
to enter programming mode.
Press Day until the display shows the day you want to copy.
Press Copy . The display shows.
Mon
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Press Day until the display shows the day you want to copy to.
Mon Wed
Press Copy to accept the change. Repeat these steps for each day you want to
copy. NOTE: donE appears for two seconds and then the normal program display
appears.
Clear a Program Period
NOTE: Wake cannot be cleared.
M13328 M13329
Press
, , or Leave
Return
Sleep
for the program period you want to clear.
Press Day until the desired day displays.
Press and hold the
, , or Leave
Return
Sleep
for approximately 3 seconds until the time and temperature clear.
Repeat the above steps for each period to be cleared.
Press
Run Program
.
STEP 11. OPERATING YOUR THERMOSTAT
Change Temperature Setting Until the Next Program Period (Temporary Change)
Press or until the screen shows the desired temperature setting.
NOTE:
The temporary temperature setting is displayed for about 3 seconds and then the room temperature is displayed. Temporary appears in the display. The setting cancels when the next program period starts or when
you press
Run Program
.
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Change Temperature Setting Indefinitely (Hold)
Move the System switch to the desired position (Heat or Cool).
Press Hold Temp then or to change your setting if desired. (The display changes from showing the setpoint temperature to room temperature after approximately three seconds).
To cancel “Hold” press
Run Program
.
Change the Temperature Setting Until a Designated Day and Period (Vacation Hold)
Press Hold Temp twice. Press or until the display shows the desired temperature setpoint.
Press Time
until the desired number of days that you will be away (1 through 255) is displayed.
Press
, Wake
, Leave
Return
or
Sleep
to select the program period when you want the program to restart.
NOTE:
If the Vacation Hold needs to be cancelled before the designated time, press
Run Program
to return to the
program.
Daylight Savings Time Key
This feature allows you to switch between standard time and daylight savings
time.
Press
Daylight Time
during fall to set the time back one hour.
Press
Daylight Time
during the spring to set time forward one hour. DST is displayed when operating on daylight savings
time.
NOTE:
Pressing the Daylight Time key more than once in a five minute period scrolls you through various time option. For example, one hour earlier or later, with or without DST. Pressing Daylight Time six times in a five minute period returns you to your original setting.
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STEP 12. SET THE FAN AND SYSTEM SWITCHES
First set the fan switch.
Fan On: The fan runs continuously. Use for improved air circulation or for
more efficient central air cleaning. (In a heat-only system, fan runs
continuously only if fan relay is connected to the G thermostat terminal).
Fan Auto: Normal setting for most homes. The equipment controls the fan
operation.
Then set the system switch.
Heat: The thermostat controls your heating system.
Off: Both the heating and air conditioning systems are off.
Cool: The thermostat controls your air conditioning system.
On Fan
On Fan
Heat Off System
Heat Off System
Heat Off System
Auto Auto
Cool Cool Cool
IF YOU HAVE A PROBLEM
Table 4. Solution Guide.
If…
Display does not appear.
·
·
Temperature settings will not change · (example; cannot set the heating higher
or the cooling lower).
·
Then…
Make sure the batteries are installed correctly. Make sure the thermostat is
mounted and latched on the wallplate. Mount and latch the thermostat on the
wallplate if it is not.
Make sure the temperature setpoints are: 40 to 90°F (4.5 to 32°C) for heating.
45 to 99°F (7 to 37°C) for cooling. Check Customize Your Thermostat section
feature numbers 34 and 35. Reset as necessary.
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If… Heating does not come on.
Cooling does not come on.
System on indicator( = heat, = cool) is lit, but no warm or cool air is coming
from the registers. Display flashes during programming. Temperature change
occurs at the wrong times.
Thermostat backlight appears dim.
Table 4. Solution Guide.
Then…
· Make sure the heating setpoint is above the room temperature. · Make sure
the circuit breaker is not tripped, and reset it if necessary. · Make sure the
power switch at the equipment is in the On position, and
set it to On if it is in the Off position. · Wait five minutes for the system
to respond. · Set the system switch to Heat.
· Make sure the cooling setpoint is below the room temperature. · Make sure
the circuit breaker is not tripped, and reset it if necessary. · Make sure the
system switch at the air conditioner is in the On position,
and set it to On if it is in the Off position. · Wait five minutes for the
system to respond. · Set the system switch to Cool.
Wait five minutes after seeing the flame or snowflake and check the registers
again. If no there is no hot or cool air coming from the registers, refer to
Heating does not come on or Cooling does not come on. If all of this has been
checked, contact your local heating and cooling contractor.
The temperature setting limit has been reached. The heating setting range is
40°F to 90°F (4.5°C to 32°C). The cooling setting range is 45°F to 99°F (7°C
to 37°C).
1. Check the program times for the period in question. 2. Make sure the AM
and PM settings are correct. 3. Make sure the current time and day settings
are correct. 4. Reprogram any incorrect settings. NOTE: If your thermostat is
set for Smart ResponseTM technology, the
start times occur before your programmed comfort periods.
· Wait until Replace Battery indicator is illuminated and replace batteries. ·
Replace batteries now.
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Toll-Free Customer Assistance
Please read and follow the provided instructions for this thermostat. If you
have questions regarding this thermostat please visit our web site at
www.honeywell.com/yourhome, or call the 24-hour automated information line at
1-800468-1502.
Before calling, please have the following information available: · Thermostat
model number. (Located on back of thermostat). · Thermostat date code.
(Located below model number). · Type of heating/cooling system (for example,
hot water, warm air, oil, or gas). · Location and number of wires connected to
the thermostat.
SMART RESPONSETM TECHNOLOGY
Your CT8602 is actually a small computer. The Smart Response technology calculates the correct time of day to turn on your heating or cooling system. Smart Response technology considers the following information. · Air temperature. · Wall temperature. · The time of day when you want the comfort temperature established.
When the thermostat activates Smart Response technology, the thermostat
displays In Recovery, changes the setpoint, and turns on the system. · Your
CT8602 thermostat learns from
experience. Each day it checks how closely it hit the recovery target and then
adjusts the next day’s recovery start time accordingly. · It takes a few days
after installation for the thermostat to adjust to the local weather, your
lifestyle, the construction of your home, and your heating/cooling system. ·
You can turn off Smart Response technology by selecting Conventional Recovery.
See Step 8. Customize Your Thermostat.
TEMPERATURE
System Operating in Comfort Mode
68°F
Recovery Continues
AM
Mon Wake
System Heat
Room
66°F 64°F
System Operating in Energy Savings Mode
Recovery Begins
Mon
System Heat
AM
Heat Sleep In Recovery
Mon System Heat
Room
AM Heat
Sleep In Recovery
1
Room
62°F
Mon
System Heat
AM Sleep
5:00
Room
5:30
6:00
6:30
ENERGY SAVINGS PERIOD
RECOVERY FROM ENERGY SAVINGS TIME
COMFORT PERIOD
THERMOSTAT USES THE SAME SCHEME TO RETURN TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.
1 IF In Recovery IS DISPLAYED, PRESS
TO SEE THE COMFORT SETPOINT.
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WIRING DIAGRAMS
2-WIRE HEAT-ONLY (JUMPER INTACT)
THERMOSTAT B
RC O W Y
R
G
4-WIRE HEAT/COOL (JUMPER INTACT)
THERMOSTAT B
RC O W Y
R
G
HEATING RELAY OR VALVE COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1 M10616
3-WIRE HEAT ONLY WITH FAN (JUMPER INTACT)
THERMOSTAT B
RC O W Y
R
G
HEATING
COOLING
FAN
RELAY OR
CONTACTOR RELAY
1
VALVE COIL COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
4-WIRE SINGLE-STAGE HEAT PUMP (JUMPER INTACT)
M10617
THERMOSTAT B
RC O W Y
R
G
3
HEATING RELAY OR VALVE COIL
FAN RELAY
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1 M10618
2
COMPRESSOR
HEAT CHANGEOVER
CONTACTOR 2
VALVE
1
COOL CHANGEOVER
FAN
VALVE
RELAY
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.
3 USING A JUMPER WIRE (NOT SUPPLIED) CONNECT W TO Y. M12739
69-1532
22
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5-WIRE HEAT/COOL (JUMPER REMOVED)
THERMOSTAT B
RC O W Y
R
G
5-WIRE HEAT/COOL WITH DAMPER (JUMPER INTACT)
THERMOSTAT B
RC O W Y
R
G
HEATING RELAY OR VALVE COIL
1
FAN RELAY
COOLING CONTACTOR COIL
1
1 POWER SUPPLY. PROVIDE
DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
M10619
HEAT DAMPER
HEAT RELAY
COMPRESSOR CONTACTOR
COOL DAMPER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FAN RELAY
1 M18738
Notice:
This thermostat is a Class B digital apparatus that complies with Canadian
Radio Interference Regulations, CRC c. 1374.
23
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69-1532
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 Honeywells 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 retailer 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 Return Goods
Honeywell Canada:
Dock 4 — MN10-3860
Honeywell Limited/Honeywell Limitée
1885 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario M1V 4Z9
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 Customer Assistance, Honeywell, 1885 Douglas Drive North, Golden Valley, MN 55422-4386. In Canada, write Retail Products ON30 Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
Home and Building Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422
Home and Building Control Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9
69-1532 J.H. 04-01
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
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www.honeywell.com/yourhome