Honeywell CT3595 User Manual

Honeywell CT3500/CT3595

PROGRAMMABLE THERMOSTAT

OWNER’S GUIDE

Weekday, Saturday and Sunday Programmable Heat and/or Cool Low Voltage (20 to 30 Vac) Thermostat and Wallplate Model CT3500/CT3595

Para pedir estas instrucciones en español, llame al 1-800-468-1502. Pour obtenir ce ode demploi en français, composer le 1-800-468-1502.

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............................................................................................................................ 18

If You Have a Problem............................................................................................................................................................ 19

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

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

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Total comfort temperature management with Smart Response™ Technology.

MERCURY NOTICE

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.

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.

If you have questions, call Honeywell Customer Care at 1-800-468-1502.

TYPICAL LOCATION OF A MERCURY SWITCH IN A THERMOSTAT

MERCURY SWITCH

M10614

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DIGITAL DISPLAY

SET CURRENT DAY/TIME

SETS CURRENT TIME AND DAY

RUN PROGRAM

RETURNS THERMOSTAT TO NORMAL OPERATING MODE

HOLD TEMP

SETS A HOLD TEMPERATURE

ND ACTIVATES VACATION HOLD FEATURE.

DAY

SETS DAY OF THE WEEK

TIME /TIME

SETS TIME FORWARD OR BACK

Run

Program

Hold Temp

Set Current

Day/Time

Day

Time Set Program

Wake

Heat/Cool

Settings

Leave

System

Return Sleep

Heat Off Cool

On Auto

Fan

RAISES TEMPERATURE SETTING

LOWERS TEMPERATURE SETTING

DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING

PROGRAM PERIODS

WAKE/LEAVE/RETURN/SLEEP: ENTERS PROGRAMMING MODE

SYSTEM SWITCH

SELECTS HEAT/OFF/COOL

FAN SWITCH

SELECTS AUTO/ON

HEAT/COOL SETTING

SWITCHES BETWEEN HEAT SETPOINTS AND COOL SETPOINTS WHILE PROGRAMMING

M18589

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System

Off

Auto

Cool

DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES

SHOWS WHEN THERMOSTAT IS IN THE PROGRAMMING MODE

SHOWS VACATION HOLD DURATION

SHOWS CURRENT DAY OR DAYS BEING PROGRAMMED

SHOWS CURRENT PROGRAM PERIOD OR PERIOD BEING PROGRAMMED

Set Program

Hold for

Em Ht Aux Ht

Mon

TueWedThuFriSatSunDa

WakeLeaveReturnSlee

Heat

Set Day/Time

Recovery

Wait

Temporary Setting

Humid

Outdoor

Filter

Repl Batt

SHOWS THERMOSTAT IS IN THE SET DAY/TIME MODE

SHOWS TEMPERATURE SETTING CHANGED FOR THIS PROGRAM PERIOD

SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT SET TEMPERATURE

Room

SHOWS THE TEMPERATURE DISPLAYED IS THE CURRENT ROOM TEMPERATURE

SHOWS THE BATTERIES ARE LOW AND MUST BE REPLACED

SHOWS CURRENT SYSTEM SWITCH POSITION HEAT/OFF/COOL

SHOWS THAT THERMOSTAT IS

INFORMATION AND WAITING TO CALL FOR HEAT OR COOL

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DISPLAYS EITHER ROOM OR SET TEMPERATURES

SHOWS SMART RESPONSE IS OFF CONVENTIONAL RECOVERY IS ON

SHOWS SMART RESPONSE IS CHANGING THE TEMPERATURE TO MEET THE CURRENT PROGRAMS

M18590

STEP 1. PREPARE FOR INSTALLATION

q 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 Care, toll-free, 1-800-468-1502.

Table 1. Compatibility Chart.

System Type Compatibility with CT3500/CT3595

Gas — Standing Pilot Yes

Gas — Electronic Ignition Yes

Gas-fired Boilers

Gas — 750 Millivolt Heat Only

Oil-Fired Boilers

Oil-Fired Furnace Yes

Electric Furnace Yes

Electric Air Conditioning Yes

Baseboard Electric (120/240 line volt)

Single Stage Heat Pump Yes

Multistage Heat Pumps/Multistage Equipment No

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.

Millivolt system must be heating only.

Not compatible with any 120/240 volt system.

Package Contents

• Thermostat • Wallplate • Screws and anchors

• Wiring labels • Owners manual

Yes

Tools Required

• Screwdriver

• Drill

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STEP 2. REMOVE OLD THERMOSTAT

WIRES THROUGH WALL OPENING

M5136

q 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).

q Turn off power to the system at the furnace or the fuse/circuit breaker panel. q Carefully unpack your new thermostat and wallplate. Save package of screws, instructions, and receipt. q 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.

q Loosen the screw or screws holding the thermostat to the wallplate and lift the thermostat away. q 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 Care at 1-800-468-1502.

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Replacing a Thermostat that has Three Wires

M16427

WIRES THROUGH WALL

WALL

MOUNTING HOLES

M15044

MOUNTING SCREWS

WALL ANCHORS (2)

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

q 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.

q 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.

q 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.

q Reposition the wallplate over the holes. Pull the wires through the

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

q Level the wallplate if desired. Thermostat functions properly when

not level.

q Tighten mounting screws.

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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).

q Match the letter of your old thermostat wire with the

corresponding terminal letter on your new thermostat. Refer to Table 2.

q Remove the factory-installed jumper connecting terminals R and

RC if wires are connected to both of those terminals.

q For wiring diagrams, if needed, see pages 22-23. q 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).

M4826

q Plug the hole in the wall with insulation to help prevent drafts

from adversely affecting thermostat operation.

M16425

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