Honeywell CT8602 User Manual 2

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

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Table of Contents

Step 1. Prepare for Installation ............................................................................................................................................... 5

Step 2. Remove Old Thermostat ............................................................................................................................................ 5

Step 3. Mount Thermostat Wallplate ...................................................................................................................................... 6

Step 4. Wire Wallplate Terminals ........................................................................................................................................... 7

Step 5. Install the Batteries .................................................................................................................................................... 8

Step 6. Set Fan Operation Switch .......................................................................................................................................... 9

Step 7. Mount the Thermostat ............................................................................................................................................... 10

Step 8. Customize Your Thermostat ...................................................................................................................................... 10

Step 9. Set the Clock ............................................................................................................................................................. 14

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

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

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Total comfort temperature management with Smart Response™ Technology

T S

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.

YPICAL LOCATION OF A MERCURY WITCH IN A THERMOSTAT

MERCUR SWITCH

M10614

69-1532—2 2

NCREASE TIME SETTING

O T A

R SCROLL FORWARD HROUGH INSTALLER SETUP ND SYSTEM TEST

SET CURRENT DAY AND TIME

RETURN TO NORMAL OPERATIONS

ENTER INDEFINITE OR TIMED HOLD MODE

SET CURRENT OR PROGRAM DAY

CHANGE BETWEEN DAYLIGHT SAVINGS AND STANDARD TIME

SET WAKE TIMES AND SETPOINTS

Set Current

Run

Program

Hold Temp

COPY ONE PROGRAMMED DAY TO ANOTHER DAY

Day/Time

Day

Daylight

Time

SET LEAVE TIMES AND SETPOINTS

Time Set Program

Wake

Heat/Cool

Settings

Copy

DECREASE TIME SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP AND SYSTEM TEST

SET RETURN TIMES AND SETPOINTS

Leave

System

Fan

Return Sleep

Off CoolHeat

On Auto

INCREASE TEMPERATURE SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP OPTIONS

DECREASE TEMPERATURE SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP OPTION

DISPLAY INFORMATION SUCH AS PRESENT SETTINGS AND OUTDOOR TEMPERATURE

SET SLEEP TIMES AND SETPOINTS

SYSTEM SWITCH

FAN SWITCH

CHANGE BETWEEN HEATING AND COOLING SETPOINTS

M14880

3 69-1532—2

S R I T T C P

SHOWS WHEN THERMOSTAT IS

S P A H

IN THE PROGRAMMING MODE

HOWS THERMOSTAT IS ROCESSING INFORMATION ND WAITING TO CALL FOR

EAT OR COOL

HOWS SMART ESPONSE

S CHANGING

HE TEMPERATURE O MEET THE URRENT ROGRAMS

SHOWS VACATION HOLD DURATION

SHOWS CURRENT DAY OR DAYS BEING PROGRAMMED

SHOWS CURRENT PROGRAM PERIOD OR PERIOD BEING PROGRAMMED

Wait

Set Program Set Day/Time

Recovery

Hold for

Mon

Tue Wed Thu Fri Sat Sun

Wake Leave Return Sleep

SHOWS THE BATTERIES ARE LOW AND MUST BE REPLACED

SHOWS SYSTEM ON DAYLIGHT SAVINGS TIME

DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES

SHOWS TEMPERATURE SETTING CHANGED FOR THIS PROGRAM PERIOD

Temporary Setting

Days

Repl Batt

Room

Filter

DST

SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT ROOM TEMPERATURE

SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT SET TEMPERATURE

System

Heat

Off

Cool

DISPLAYS EITHER ROOM OR SET TEMPERATURES

SHOWS CURRENT SYSTEM SWITCH POSITION HEAT/OFF/COOL

SHOWS THAT THERMOSTAT IS "CALLING" FOR HEAT OR COOL

SHOWS SMART RESPONSE IS OFF CONVENTIONAL RECOVERY IS ON

M18746

69-1532—2 4

STEP 1. PREPARE FOR INSTALLATION

❑ Check the contents of your thermostat package to be sure all items are included.

Package Contents

• Thermostat • Wallplate • Owner’s Guide

• Wiring labels • Screws and anchors

❑ Locate the required tools to install your thermostat.

Tools Required

• Screwdriver • Drill • Drill bits: 3/16 in. for drywall;

• Hammer • Needle-nose pliers 7/32 in. for plaster

• Level

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.

5 69-1532—2

WIRES THROUG WALL OPENING

M5136

Replacing a Clock Thermostat that has C or C1 Clock Terminals

When 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 Care 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.

STEP 3. MOUNT THERMOSTAT WALLPLATE

❑ Separate wallplate from thermostat by placing your thumbs between bottom of wallplate

and thermostat and pulling wallplate up and away from thermostat. See illustration.

❑ Position wallplate on wall. Level wallplate

for appearance, if desired. Use a pencil to mark two mounting holes that best fit the application.

❑ Remove wallplate from wall. Drill two 3/16 in.

holes in wall (if drywall) as shown. For plaster or wood, drill 7/32 in. holes as marked. Gently tap (provided) anchors into drilled holes until flush with wall.

❑ Reposition wallplate over holes. Pull wires

through wiring opening. Loosely insert mounting screws into each of the holes.

❑ Level wallplate, if desired. Thermostat

functions correctly, even when not level.

❑ Tighten mounting screws.

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WALL ANCHORS (2)

WIRES THROUGH WALL

WALL

MOUNTING HOLES

MOUNTING SCREWS

M15044

M16427

STEP 4. WIRE WALLPLATE TERMINALS

F I 7

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 old thermostat wire with the corresponding

terminal letter on new thermostat. Refer to Table 1.

❑ Remove factory-installed jumper connecting terminals R and

RC if wires are connected to both of those terminals.

❑ For wiring diagrams, if needed, see Wiring Diagrams section. ❑ Loosen terminal screws. Slip each wire beneath matching

terminal. Wraparound and straight connections are both acceptable, (see illustration). Tighten terminals.

❑ Plug the hole in the wall with insulation to help prevent

drafts from adversely affecting thermostat operation.

OR WRAPAROUND

NSERTION STRIP

/16 IN. (11 MM).

FOR STRAIGHT INSERTION STRIP 5/16 IN. (8 MM).

M482

M16425

7 69-1532—2

Table 1. Terminal Designations on Old and New Thermostats.

Terminal on Old Thermostat Connect To Description

R, RH

, 4, V

Rc, R

, H W Heat

W, W

, M Y Cooling

Y, Y

RPower

Rc Power for cooling

G, F G Fan

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

, Xc, B

, H

If both RH and R terminals are present on existing thermostat, remove jumper and connect Rh to R and R to Rc. Do not connect both O and B when wiring to a single stage heat pump. Connect O to O. Tape off B. Tape off end of the wire with electrical tape and push the taped wire back into the wiring hole in the wall.

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

Do not connect. Transformer common

Do not continue installation. Call 1-800-468-1502.

Second stage heat.

Second stage cool.

STEP 5. INSTALL THE BATTERIES

IMPORTANT

Three fresh AA alkaline 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 on the next page.

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WALLPLATE

RRCOWYG

INSTALL 3 AA ALKALINE BATTERIES AS SHOWN, POSITIVE (+) TERMINALS TOWARD TOP.

M1062

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