Honeywell MagicStat CT3300 Caractéristiques techniques

69-1634-1

INSTALLATION AND PROGRAMMING INSTRUCTIONS

® U.S. Registered Trademark

CT3300 Programmable Thermostat

Welcome to the world of comfort and energy savings with your new

Honeywell Programmable Thermostat. Your new thermostat will

automatically control the temperature in your home, keeping you

comfortable while saving energy.

Weekday/Weekend (5-day/2-day)

Programmable Heat and/or Cool

Low Voltage (20 to 30 Vac)

Thermostat and Mounting Plate

Model CT3300

Table of Contents

Installation .................................................................................................................................................................. 2

Programming.............................................................................................................................................................. 11

Operation.................................................................................................................................................................... 17

Frequently Asked Questions ...................................................................................................................................... 22

Customer Assistance ................................................................................................................................................. 23

Limited Warranty ........................................................................................................................................................ 24

69-1634—1 2

MERCURY NOTICE

If you are removing an old thermostat that contains mercury in a sealed tube

(Fig. 1), do not place the old thermostat in the trash. Contact your local waste

management authority for instructions regarding recycling and the proper

disposal of the old thermostat.

Installation

INSTALLATION

Verify You Have Correct Thermostat

Make sure that the CT3300 is the correct thermostat for your heating/cooling system. Read the compatibility chart

below to determine which system you have. If your system is not compatible with the CT3300, the table recommends

an alternate Honeywell model. If you are unsure what type of thermostat is right for your system, visit us on the Web at

www.honeywell.com/yourhome or call Honeywell Customer Care at 1-800-468-1502.

Heating/Cooling System

Compatible

with CT3300? Alternate Model

Conventional

Single stage systems that include warm air furnaces and hot water.

Yes

Electric Baseboard

Electric-powered heating strips located just above the floor, usually 120 to 240

volts.

No CT1950 for 240

volts

M3701

MERCUR

SWITCH

Fig. 1.

3 69-1634—1

Step 1. Prepare for Installation

1. Carefully unpack your new thermostat. Save your receipt and make sure you have the following parts:

• Thermostat and mounting plate.

• Labels.

• Screws and anchors.

• Installation and Programming Instructions.

2. Gather the needed tools and supplies listed below.

3. Make sure that your heating and cooling systems are working correctly. If there is a problem with either system,

call a heating/air conditioning contractor—the problem may persist after you install the new thermostat.

IMPORTANT:

To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the tem-

perature outdoors is below 50°F (10°C).

Steam

A steam boiler with radiator heat.

No CT3600

Heat Pump

Heating and cooling are produced from the same outdoor unit (compressor) with

no auxiliary or backup heat.

No CT3600

Multistage Heat Pump

Heating and cooling are produced from the same outdoor unit (compressor) with

auxiliary or backup heat.

No CT3611

Multistage Conventional

A heating or cooling system with more than one stage.

No See your

contractor

Required Tools and Supplies Optional Tools

• Two AA alkaline batteries. Honeywell recommends Energizer®

batteries.

• Screwdriver.

• Hand or power drill with 3/16-inch or 7/32-inch drill bit.

• Pencil.

• Wire cutter/stripper or sharp knife.

• Level.

• Electrical tape.

Heating/Cooling System

Compatible

with CT3300? Alternate Model

69-1634—1 4

Step 2. Remove Old Thermostat

Fig. 2. a. Turn off power to the heating/cooling system, either at the furnace or

at the fuse/circuit breaker panel.

b. Remove the cover of your old thermostat (Fig. 2).

c. Unscrew and remove the old thermostat’s mounting plate from the

wall, but do not disconnect the wires.

d. Inspect the old thermostat wiring. If wiring meets any of the follow-

ing conditions, see special wiring instructions section after Step

Fig. 3. • The old thermostat is a clock thermostat with wires attached to

the C or C1 terminals.

• The old thermostat has six or more wires, excluding wires

attached to C or C1 terminals.

• The old thermostat has three wires.

• There are five wires connected to the old thermostat.

• There are extra wires that are not connected to the old

thermostat.

e. Using enclosed labels, mark wires with letter of terminal it is attached

to on the old thermostat (Fig. 3). Do not label using colors. If labels

do not match letters on old thermostat terminals, see wiring cross ref-

erence table in Special Wiring Instructions section.

Fig. 4. f. Disconnect the wires from the old thermostat and wrap the wires

around a pencil to keep them from falling back into the wall.

NOTE: Remember, if your old thermostat contains mercury, you

must recycle it. See Mercury Notice for more recycling

information.

✓Check your progress

Your wall should now look like Fig. 4.

M2014

M19086

WIRES THROUG

WALL OPENING

M20133

5 69-1634—1

Step 3. Install Mounting Plate

Fig. 5. a. Separate the mounting plate from the thermostat using a coin, as

shown in Fig 5.

b. Position the mounting plate on the wall. Be sure the mounting plate is

flush against the wall and none of the wires are trapped behind it.

c. Level the mounting plate and use a pencil to mark the center of the

mounting plate screw holes.

d. Remove the mounting plate and drill holes at the locations marked.

• For drywall, drill two 3/16-inch holes.

• For plaster or wood, drill two 7/32-inch holes.

Fig. 6. e. If installing in drywall, gently tap the anchors (provided) into the drilled

holes until they are flush with the wall.

f. Reposition the mounting plate over the holes, pull the wires through

the wiring opening, and loosely insert the mounting screws into each

of the drilled holes or anchors (Fig. 6).

g. Make sure the mounting plate is level and tighten the mounting

screws.

Fig. 7. ✓ Check your progress

The mounting plate is now mounted on the wall and should look like

Fig. 7.

M20139

M20129

M2012

69-1634—1 6

Step 4. Set Thermostat for Your Type of Heating System

IMPORTANT:

Setting your thermostat correctly for your

type of heating system allows it to maintain

accurate temperature control, minimize

swings in the temperature of the room, and

efficiently run the fan.

a. Use the FUEL SWITCH on the back of

the thermostat to set your new thermostat

for the type of fuel that your heating system

uses: F–gas or oil, or E–electric.

NOTE: This setting enables correct fan

operation.

b. Use DIP switches 1 and 2 on the back of

the thermostat to set your new thermostat

for your type of heating system. See the

Heating System Table on the next page to

find the correct settings.

NOTE: These DIP switches are factory-set for a warm air, gas, or oil heating system.

c. The thermostat is set to display the temperature in degrees Fahrenheit (°F). If you want to display the temperature

in degrees Celsius (°C), turn DIP Switch 3 to Off position.

d. You can install the batteries and program your thermostat now, or you can wait until the thermostat is mounted on

the wall. To install the batteries, see Step 7. To program the thermostat, see the Programming section.

Fig. 8.

M2063

W Y G

C R R

THERMOSTAT BACK

DISPLAY F

DISPLAY C 3 - ON

3 - OFF

FUEL SWITCH

WARM AIR

FURNACE 1 - ON 2 - ON F

1 - OFF 2 - ON F

1 - ON 2 - OFF E

FUEL SWITCH

POSITION

DIP SWITCH

POSITION

HEATING

SYSTEM

C C

OFF ON

HOTWATEROR

HIGHEFFICIENCY

ELECTRIC

FURNACE

7 69-1634—1

Heating System Table

Step 5. Wire Thermostat Terminals

Type of System

D I P S w i t c h e s

1 and 2 Fuel Switch

Warm air, gas, or oil heating system with an efficiency rating under 90%.

(The furnace efficiency rating should be on the furnace.)

Use factory setting

1–On; 2–On

High-efficiency furnace such as a 90% or greater AFUE (Average Fuel

Utilization Efficiency) unit.

1–Off; 2–On F

Hot water boiler 1–Off; 2–On F

Electric furnace 1–On; 2–Off E

Fig. 9. a. Hold thermostat as shown in Fig. 9.

b. Using the labels on the wires, match letter of your old thermostat wire

with the corresponding terminal on the back of your new thermostat.

NOTE: If letters on old thermostat terminals do not match letters on

new thermostat terminals, all old wires may not need connect-

ing to new thermostat. See Special Wiring Instructions section.

Fig. 10. c. Loosen terminal screws and slip each wire beneath its matching

terminal (Fig 10).

d. Securely tighten terminals.

M2012

INSERT

STRAIGHT

UNDER

SCREW HEAD

/16 in.

(

8 mm)

TRIP

END OF WIR

VISIBLE HER

M20126

69-1634—1 8

Step 6. Mount Thermostat

Step 7. Install the batteries

Fig. 11. Fig. 12. e. Align the tabs at the top of the thermostat with the

tabs at the top of the mounting plate (Fig. 11).

f. Press the lower edge of the case to latch the

bottom of the thermostat (Fig. 12)

Fig. 13.

Fig. 14.

IMPORTANT:

Batteries must be installed for programming and operation of

the thermostat and heating/cooling system. Honeywell

recommends using Energizer® batteries.

a. Make sure that the System switch is set in the Off position.

b. Using a coin, open the battery door as shown in Fig. 13.

c. Install the batteries. Make sure that the positive and negative termi-

nals are oriented correctly as marked inside the battery case.

d. Replace the battery door.

e. Remove the clear plastic label from the digital display.

✓Check your progress

When the batteries are installed correctly, the digital display flashes all

entries once, then begins to flash a default time and the current

temperature (Fig. 14). The flashing continues until you begin to program

the thermostat. You are now ready to program the thermostat. See

Programming section.

M2013

M1719C

REMOVING

BATTERY

DOOR

9 69-1634—1

Special Wiring Instructions

Clock thermostat with C or C1 terminals

A clock thermostat has one or two extra wires attached to C or C1 terminals for clock operation that are not used when

installating your thermostat. They must be insulated from each other to avoid damaging your electrical circuit.

a. Make sure that power to the heating/cooling system is turned off.

b. Locate wires that are connected to clock terminals marked C or C1.

c. As you disconnect the wires, do not allow these wires to touch.

d. Wrap wires separately, using electrical tape to insulate the wires.

e. Place wires to avoid interfering with new thermostat operation. They are not used with your 3300 Thermostat.

f. Continue with the installation.

Six or more wires

If old thermostat has six or more wires (excluding clock wires attached to C or C1 terminals), your heating/cooling

system is a variation of a heat pump or multistage system. See thermostat compatibility table located before

Step 1. Your 3300 Thermostat does not work with such systems and should be returned to the place of purchase.

Three thermostat wires

If you have three wires for heating only and can operate the fan using Fan On switch, the 3300 Thermostat works with

your system. Continue installation procedure. If you have three-wire heating-only system and cannot operate fan using

Fan On switch, the 3300 Thermostat does not work with your system. Contact your heating contractor for installation.

Wires that are not connected to old thermostat

For extra wires that do not connect to your old thermostat, do not label them or connect these wires. Tape them with

electrical tape and place them to avoid interfering with operation of new thermostat. Continue installation procedure.

Five wires connected to old thermostat

Your new thermostat has a factory-installed metal

jumper between the R and Rc terminals (Fig. 15).

Remove jumper before wiring R and Rc terminals.

Fig. 15.

M20127

JUMPER (FACTORY-

INSTALLED). REMOVE

IF 5-WIRE SYSTEM

WY G

69-1634—1 10

Old thermostat terminals that do not match new thermostat terminals

Use the table below to wire the new thermostat.

*Remove factory-installed jumper between R and Rc terminals in 5-wire systems.

Old Thermostat

Terminal

Connect to New

Thermostat

Terminal Description

R, RH, 4, V R* Power

Rc, R Rc* Power for cooling

W, W1, H W Heat

Y, Y 1, M Y Cooling

G, F G Fa n

O Do not continue

installation

Changeover in cool (O terminal) or changeover in heat (B terminal).

You have a single-stage heat pump or zoning system. Select an alternate

thermostat model.

C, X, B Do not connect Transformer common.

W2, H2Do not continue

installation.

Second stage heat (W2, H2) or second stage cooling (Y2).

You have a multistage heating/cooling system. Select an alternate

thermostat model.

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