Honeywell MagicStat CT3300 Caractéristiques techniques

MagicStat®CT3300 Programmable Thermostat

Installation and Programming Instructions

Welcome to the world of comfort and energy savings

with your new Honeywell MagicStat®Programmable

Thermostat. Your new thermostat will automatically

control the temperature in your home, keeping you

comfortable while saving energy.

If you have any questions about using this thermostat,

visit our home expert Web site at

www.honeywell.com/yourhome or call Honeywell

Customer Relations at 1-800-468-1502.

®U.S. Registered Trademark

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

Change the clock for Daylight/

Standard Time

Set the Fan and System switches 17

Replace the batteries 18

Override the program settings 19

Frequently asked questions 22

Limited 1-Year Warranty 24

69- 0654- 5

2INSTALLATION 69-0654-5

Installation

Verify that you have the right thermostat

Make sure that the CT3300 is the right 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 Relations 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

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

Recycling thermostat

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.

Fig. 1

M3701

MERCURY

SWITCH

69-0654-5 INSTALLATION 3

Step 1. Prepare for installation

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

b. Gather the needed tools and supplies listed below.

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

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

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

IMPORTANT: To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the

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

• Thermostat and mounting plate

• Labels

• Screws and anchors

• Installation and Programming Instructions

4INSTALLATION 69-0654-5

Step 2. Remove the old thermostat

Fig. 2

Fig. 3

Fig. 4

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 the wiring meets any of

the following conditions, see the special wiring

instructions on page 9.

• The old thermostat is a clock thermostat with wires attached

to the C or C1 terminals.

• The old thermostat has 6 or more wires, excluding wires

attached to C or C1 terminals.

• The old thermostat has 3 wires.

• There are 5 wires connected to the old thermostat.

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

thermostat.

e. Using the enclosed labels, mark the wires with the letter of the

terminal that it is attached to on the old thermostat (Fig. 3). Do

not label the wires by color.

If the labels do not match the letters on the old thermostat

terminals, see the wiring cross reference table on page 10.

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 page 2 for more recycling information.

✓ Check

our

ress

Your wall should now look like Fig. 4.

M20140

M19086

WIRES THROUGH

WALL OPENING

M20133

69-0654-5 INSTALLATION 5

Step 3. Install the mounting plate

Fig. 5

Fig. 6

Fig. 7

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 sits 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’s screw holes.

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

marked.

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

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

e. If installing in drywall, gently tap the anchors that were 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.

✓ Check your progress

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

Fig. 7.

M20139

M20129

M20128

6INSTALLATION 69-0654-5

Step 4. Set the thermostat for your type of heating system

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–electricity.

Note: This setting enables proper fan operation.

b. Use the A and B screws 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 screws 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

)

, adjust screw C out one turn.

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 the instructions on page 8. To program

the thermostat, see the instructions that begin on page 12.

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.

Fig. 8

RRc

W Y G

B D

A C

THERMOSTAT BACK

M20145

DISPLAY F

DISPLAY C C–IN

C–OUT

1 TURN

FOR HIGH EFFICIENCY FURNACE (90%+ AFUE)

ADJUST: SCREW A–OUT ONE TURN

SCREW B–IN

FUEL SWITCH – F POSITION

FUEL SWITCH

WARM AIR

FURNACE

HOT WATER

BOILER

ELECTRIC

FURNACE

A–IN

A–OUT

1 TURN

A–IN

ADJUST SCREWS THROUGH HOLES

TO SELECT OPERATION DESIRED

B–IN

B–OUT

1 TURN

FUEL SWITCH

POSITION

HEATING SYSTEM

FUEL SWITCH

HEATING

SYSTEM TYPE

SELECTING ºF OR ºC

69-0654-5 INSTALLATION 7

Heating system table

Note: Setting the screw “out one turn” means turning the screw 360° counter-clockwise, or one complete turn.

Step 5. Wire the thermostat terminals

Type of system Screws A and B 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

A–leave in

B–leave in

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

Utilization Efficiency) unit

A–out one turn

B–leave in

Hot water boiler A–out one turn

B–leave in

Electric furnace A–leave in

B–out one turn

Fig. 9

Fig. 10

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

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

thermostat wire with the corresponding terminal on the back of

your new thermostat.

Note: If the letters on the old thermostat terminals do not match

the letters on the new thermostat terminals, you might not need

to connect all of the old wires to the new thermostat. See the

wiring cross reference table on page 10 for details.

c. Loosen the terminal screws and slip each wire beneath its

matching terminal (Fig 10).

d. Securely tighten the terminals.

M20125

INSERT

STRAIGHT

UNDER

SCREW HEAD

5/16 in.

(8 mm)

STRIP

END OF WIRE

VISIBLE HERE

M20126

8INSTALLATION 69-0654-5

Step 6. Mount the thermostat

Step 7. Install the batteries

a. Align the tabs at the top of the thermostat with the tabs at the

top of the mounting plate (Fig. 11).

b. Press the lower edge of the case to latch the bottom of the

thermostat (Fig. 12).

Fig. 11 Fig. 12

M20130

M20131

Fig. 13

Fig. 14

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 terminals 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

our

ress

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. Go to page 12.

IMPORTANT: Batteries must be installed for programming and

operation of the thermostat and heating/cooling system.

Honeywell recommends using Energizer® batteries.

M1719C

REMOVING

BATTERY

DOOR

69-0654-5 INSTALLATION 9

Special wiring instructions

A clock thermostat with C or C1 terminals

A clock thermostat has one or two extra wires attached to the C or C1 terminals that allow the clock to operate. These

wires are not used during the installation of your new 3300 thermostat and 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 the wires that are connected to the clock terminals marked C or C1.

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

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

e. Place the wires where they will not interfere with the operation of the new thermostat.

You will not connect these wires to your 3300 thermostat.

f. Continue with the installation as instructed on page 4 at step 2e.

Six or more wires

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

system is most likely a variation of a heat pump or multistage system. Your 3300 thermostat will NOT work with such

systems and should be returned to the place of purchase. See the compatibility table on page 2 for information about which

programmable thermostat WILL work with your system.

Three thermostat wires

If you have three wires for heating only and can operate the fan using the old thermostat’s fan switch, the 3300 thermostat

will work with your system. Continue the installation procedure on page 4, step 2e.

If you have a three-wire heating-only system and cannot operate the fan using the old thermostat’s fan switch, the 3300

thermostat will probably NOT work with your system. Contact your heating contractor for installation assistance.

Wires that are not connected to the old thermostat

If there are extra wires that do not connect to your old thermostat, do not label them. You will not connect these wires to

your new thermostat. Tape off the wires with electrical tape and place them where they will not interfere with the operation

of the new thermostat. Continue the installation procedure on page 4, step 2e.

10 INSTALLATION 69-0654-5

M20127

JUMPER (FACTORY-

INSTALLED). REMOVE

IF 5-WIRE SYSTEM

RRc

WY G

Five wires connected to the old thermostat

Your new thermostat has a factory-installed metal jumper between the R and Rc terminals (Fig. 15). Remove the jumper

before wiring the R and Rc terminals.

Fig. 15

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 Fan

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. See page 2 for 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. See page 2 for an alternate

thermostat model.

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