Honeywell CT3600 User manual

69-1642

OWNER’S GUIDE

® U.S. Registered Trademark

Honeywell CT3600/CT3697

PROGRAMMABLE THERMOSTAT

Seven Day Programmable Heat and/or Cool

Low Voltage (20 to 30 Vac) Thermostat and Wallplate

Model CT3600/CT3697

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.

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 ................................................................................................................................................ 20

Smart Response™ Technology .................................................................................................................................. 21

Wiring Diagrams ......................................................................................................................................................... 22

69-1642 2

Total comfort temperature management with Smart Response™

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.

M10614

MERCUR

SWITCH

YPICAL LOCATION OF A MERCURY

WITCH IN A THERMOSTAT

3 69-1642

Time Set Program

Run

Program

Hold Temp

Set Current

Day/Time

Day Heat/Cool

Settings

Daylight

Time Copy Usage

System

Fan

Wake Leave Return Sleep

Heat Off Cool

On Auto

M18635C

RAISES

TEMPERATURE SETTING

LOWERS

TEMPERATURE SETTING

DISPLAYS

CURRENT HEAT/COOL

TEMPERATURE SETTING

PROGRAM PERIODS

WAKE/LEAVE/RETURN/SLEEP:

ENTERS PROGRAMMING MOD

FAN SWITCH

SELECTS AUTO/ON

SYSTEM SWITCH

SELECTS HEAT/OFF/COOL

DIGITAL DISPLAY

ET CURRENT

AY/TIME

ETS CURRENT

IME AND DAY

UN PROGRAM

ETURNS

HERMOSTAT

O NORMAL

PERATING MODE

HEAT/COOL SETTING

SWITCHES BETWEEN

HEAT SETPOINTS AND

COOL SETPOINTS

WHILE PROGRAMMING

TIME /TIME

SETS TIME

FORWARD OR BACK

ETS DAY OF

HE WEEK

OLD TEMP

ETS A HOLD

EMPERATURE

ETTING AND

CTIVATES

ACATION HOLD

EATURE

DAYLIGHT TIME

SELECTS STANDARD

TIME OR DAYLIGHT

SAVINGS TIME

COPY

COPY SETTINGS FROM

ONE DAY TO ANOTHER DAY

FOR QUICK PROGRAMMING

USAGE

TRACKS EQUIPMENT RUNTIME

69-1642 4

M16421C

Aux Ht

System Off Auto

WakeLeaveReturnSleep

Mon

Wait

Room

Humid

Outdoor

Filter

Hold for

Repl Batt

Recovery

Cool

TueWedThuFriSatSun Days

Set Program

Set Day/Time

Temporary Setting

Em Heat

Em Ht

DISPLAYS EITHER CURRENT

TIME OF DAY OR PROGRAM TIMES SHOWS THERMOSTAT IS IN

THE SET DAY/TIME MODE

SHOWS TEMPERATURE SETTING

CHANGED FOR THIS PROGRAM PERIO

SHOWS THE TEMPERATURE

DISPLAYED IS THE CURREN

SET TEMPERATURE

SHOWS THE TEMPERATURE

DISPLAYED IS THE CURREN

ROOM TEMPERATURE

SHOWS THE BATTERIES ARE

LOW AND MUST BE

REPLACED

DISPLAYS EITHER ROOM

OR SET TEMPERATURES

SHOWS SMART RESPONSE IS OFF.

CONVENTIONAL RECOVERY IS ON

SHOWS THERMOSTAT IS PROCESSING

INFORMATION AND WAITING TO CALL FOR HEAT OR COOL

SHOWS SMART RESPONSE IS CHANGING

THE TEMPERATURE TO MEET THE

CURRENT PROGRAMS

SHOWS THAT THERMOSTAT IS

"CALLING" FOR HEAT OR COOL

SHOWS CURRENT

SYSTEM KEY POSITION

HEAT/OFF/COOL

HOWS CURRENT

ROGRAM PERIOD

R PERIOD BEING

ROGRAMMED

HOWS CURRENT

AY OR DAYS BEING

ROGRAMMED

HOWS VACATION

OLD DURATION

SHOWS WHEN

THERMOSTAT IS IN THE

PROGRAMMING MODE

DST

SHOWS SYSTEM ON DAYLIGHT SAVINGS TIME

5 69-1642

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.

aCompatible with 2-wire Honeywell and Taco zone valves. Not compatible with 3-wire zone valves or 2-wire White

Rodgers no. 1361 zone valves.

bMillivolt system must be heating only.

cNot compatible with any 120/240 volt system.

Package Contents

• Thermostat • Wallplate • Screws and anchors

• Wiring labels • Owner’s Guide

Tools Required

• Screwdriver

• Drill

System Type

Compatibility with CT3600/

CT3697

Gas — Standing Pilot Yes

Gas — Electronic Ignition Yes

Gas-fired Boilers Yesa

Gas — 750 Millivolt Heat onlybYes

Oil-Fired Boilers Yesa

Oil-Fired Furnace Yes

Electric Furnace Yes

Electric Air Conditioning Yes

Baseboard Electric (120/240 line volt)cNo

Single Stage Heat Pump Yes

Multistage Heat Pumps/Multistage Equipment No

69-1642 6

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.

Replacing a Clock Thermostat that has C or C1 Clock Terminals

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. For information about which programmable thermostats will work with your

system, call Honeywell Customer Relations Center, 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.

WIRES THROUG

WALL OPENING

M5136

7 69-1642

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.

M16427

WIRES

THROUGH WALL

WALL

MOUNTING

HOLES

M15044

MOUNTING

SCREWS

WALL

ANCHORS (2)

69-1642 8

STEP 4. WIRE WALLPLATE TERMINALS

IMPORTANT

All wiring must comply with local codes and ordinances. If

unsure about household wiring procedures, call your local heat-

ing/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.

❑Plug the hole in the wall with insulation to help prevent drafts from adversely affecting thermostat operation.

M16425

M482

OR WRAPAROUND

NSERTION STRIP

/16 IN. (11 MM).

FOR STRAIGHT INSERTION

STRIP 5/16 IN. (8 MM).

9 69-1642

Table 2. Terminal Designations on Old and New Thermostats

aIf both RH and R terminals are present on existing thermostat, remove jumper and connect Rh to R and R to Rc.

bDo not connect both O and B when wiring to a single stage heat pump. Connect O to O. Tape off B.

cTape 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

Install three AA alkaline batteries. 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.

Terminal on Old Thermostat Connect To Description

R, RHa, 4, V RPower

Rc, RaRc Power for cooling

W, W1, H W Heat

Y, Y 1, M Y Cooling

G, F G Fan

O O Changeover in cool. (Single stage heat pump only).

BbBbChangeover in heat. (Single stage heat pump only).

Cc, Xc, BbDo not connect. Transformer common

W2, H2Do not continue installation.

Call 1-800-468-1502.

Second stage heat.

Y2Second stage cool.

M1062

INSTALL 3 AA ALKALINE BATTERIES

AS SHOWN, POSITIVE (+) TERMINALS

TOWARD TOP.

WALLPLATE

RRCOWYG

69-1642 10

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 ther-

mostat 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.

As a precaution when leaving home for longer than a month, change batteries before leaving to prevent

the system from shutting down due to lack of power. Always use fresh alkaline batteries. Nonalkaline

batteries do not last as long. They also can leak, causing damage to the thermostat and the wall surface.

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.

M16424

M1267

FUEL SWITCH

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