Honeywell MAGICSTAT 3355 Manuale utente

169-1012

OWNER’S GUIDE

MagicStat

/3355

Programmable Thermostat by Honeywell

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

Programmable Heat and/or Cool

Low Voltage (20 to 30 Vac)

Thermostat and Mounting Plate

Model CT3355

69-1012

269-1012

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 when pro-

grammed according to the instructions in

this manual.

Direct any questions concerning the application

of this thermostat to Honeywell Customer

Assistance at 1-800-468-1502, Monday-Friday

7:00 a.m.-5:30 p.m., Central time.

RECYCLINGTHERMOSTAT

If this thermostat is replacing a thermo-

stat that contains mercury in a sealed

tube, see Fig. 1, do

not

place your old

thermostat in the trash. Contact your

local waste management authority for

instructions regarding recycling and the

proper disposal of your old thermostat.

If you have questions, call Honeywell Inc.

at 1-800-468-1502.

Fig. 1.Typical

location of a

mercury switch in a

thermostat.

M3701

MERCURY

SWITCH

369-1012

Table of Contents

Step 1: Prepare For Installation ..................................................................................................... 4

Step 2: Remove Old Thermostat ................................................................................................... 6

Step 3: Install Batteries .................................................................................................................. 8

Step 4: Program Thermostat........................................................................................................ 10

Personal Programming Chart ...................................................................................................... 12

Step 5: Adjust Fan Operation Switch, as Required ................................................................... 18

Step 6: Adjust System On-Time, °F/C°, as Required ................................................................. 18

Step 7: Mount Thermostat Mounting Plate ................................................................................. 21

Step 8: Wire Thermostat Terminals ............................................................................................. 23

Step 9: Mount Thermostat............................................................................................................ 27

Step 10: Check Thermostat Operation After Programming and Installing .............................. 28

Step 11: Set Fan and System Switches ..................................................................................... 30

Troubleshooting Guide................................................................................................................. 32

Limited One-Year Warranty ................................................................................. Inside Back Cover

469-1012

Step 1: Prepare for Installation

■■Check Table 1 to make sure this thermostat is compatible with your system. If not, return to the

retailer. For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.

Table 1. Compatibility Chart.

Not compatible with any 120/240 volt circuit.

aCompatible with 2-wire Honeywell Zone Valves. Isolating relay required for 3-wire thermostats for

zone valves. Not compatible with 2-wire White-Rodgers no. 1361 Valves.

bCompatible with

hot water

baseboard systems. Will not work efficiently on steam or gravity

systems.

System Type Compatible With CT3355

Gas—Standing Pilot Yes

Gas—Electronic Ignition Yes

Gas-Fired Boilers Yes a, b

Gas—Millivolt

Oil-Fired Boilers Yes a, b

Oil-Fired Furnace Yes

Electric Furnace Yes

Electric Air Conditioning Yes

Baseboard Electric (120/240 Line Volt)

Heat Pumps/Multistage Equipment

569-1012

■■Acquire tools and items below as needed. Also purchase two AA alkaline batteries; we recom-

mend Energizer® batteries.

M878B

CROSS-RECESSED

SCREWDRIVER HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED TO

DRILL HOLES IN WALL

WIRE CUTTER/STRIPPER OR SHARP

KNIFE, IF NEEDED TO STRIP WIRES MASKING TAPE, IF 

NEEDED TO LABEL WIRES 

AS DISCONNECTED FROM

OLD THERMOSTAT

LEVEL, IF NEEDED TO LEVEL

THERMOSTAT FOR APPEARANCE

669-1012

Step 2: Remove Old Thermostat

■■Test to make certain that your heating and

cooling systems are working properly. If

either 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 system at the

furnace, or at the fuse/circuit breaker panel.

■■Carefully unpack your new thermostat and

mounting plate; save package of screws,

instructions and receipt.

■■Remove the cover from the old thermostat.

If it does not snap off when pulled firmly

from the bottom, check for a screw used to

lock on the cover.

■■Loosen screws holding thermostat to

subbase, wallplate or wall, and lift away.

■■Disconnect wires from the old thermostat or

subbase. As you disconnect each wire, use

masking tape to label it with the old terminal

designation. If there are only two wires, they

do not need to be labeled. If there is an extra

wire that is not connected to your old

thermostat, you will

also

not be connecting it

to your new thermostat. Wrap wires as shown

to keep them from falling back into the wall.

WIRES THROUGH

WALL OPENING

M5136

769-1012

Replacing a Clock Thermostat

that has C or C1 Clock Terminals?

If you are replacing a Honeywell Chronotherm®

Thermostat, you can find one or two wires that

go to the C or C1 clock terminals on the

Chronotherm® Thermostat wiring wallplate. Do

not allow them to touch, or you may damage

your transformer. Disconnect the wires and wrap

them separately, using electrical tape.

Do not

wrap them together

. Place the wires where they

do not interfere with the operation of the new

thermostat. Record the colors and terminal

designation labels of the remaining wires.

Six or more wires?

If there are six or more wires (excluding clock

wires attached to terminals), you probably have

a variation of a heat pump or multistage

system. The thermostat is

not

compatible with

such systems so return the product to the

place of purchase. If you would like information

about which programmable thermostats work

with your system, call Honeywell Customer

Assistance at 1-800-468-1502.

Three thermostat wires?

If you have three wires for heating only and

can operate the fan using the fan ON switch,

this thermostat works with your system.

However, some hot water (zoned) heating

systems have three thermostat wires. The

thermostat does not work without installing an

isolating relay on these systems. For details,

call Honeywell Customer Assistance at

1-800-468-1502.

869-1012

Step 3: Install Batteries

IMPORTANT

Batteries must be installed for

programming and operation of the

thermostat and heating/cooling

system.

■■Purchase two AA alkaline batteries; non-

alkaline batteries do not last as long, and

can leak, causing damage to the thermostat

or the wall surface. We recommend

Energizer® batteries.

■■Make sure the thermostat is set to the OFF

position.

■■Use a coin to remove the battery door.

■■Install the fresh batteries as shown, making

sure positive and negative terminals are

oriented correctly.

■■Replace the battery door.

As the batteries are running low, a

bAt Lo

indicator flashes for one or two months before

batteries run out completely. Replace the

batteries as soon as possible after the indicator

starts flashing. If you do not replace the

batteries sometime while

bAt Lo

is flashing, the

M1719C

REMOVING 

BATTERY

DOOR

969-1012

indicator eventually stops flashing.

bAt Lo

stays on without flashing, indicating the

thermostat and heating/cooling system

have stopped working when the batteries

are almost completely dead.

After the batteries are completely dead, the

bAt Lo

indicator disappears, leaving a com-

pletely blank display.

Press down on the left ends of the batteries to

remove. If you insert the new batteries within

20 to 30 seconds of removing the old ones,

you do not have to reprogram the thermostat.

However, if the display is blank, the batteries

are dead or incorrectly installed and you must

reprogram. See pages 14 and 15 to reprogram.

IMPORTANT

Although the thermostat has a low

battery indicator, replace the batteries

once a year to prevent the thermostat

and heating/cooling system from

shutting down due to lack of

battery power.

As a precaution, when leaving home for longer

than a month, change batteries before you

leave to prevent the system from shutting down

due to lack of battery power.

INSTALL TWO AA ALKALINE 

BATTERIES AS SHOWN

M1713

10 69-1012

Step 4: Program Thermostat

After the batteries are installed, the thermostat

can be easily programmed in your hand, before

it is installed on the wall.

If you prefer to program the thermostat after it

is installed on the wall, skip to page 18, and

return later to this programming section.

The following Personal Programming Chart

(pages 12 and 13) can be helpful for planning

your program schedule of time and tempera-

ture settings for various times of the day.

Four time periods are available during week-

days — WAKE, LEAVE, RETURN, and SLEEP.

These periods can be seen individually on the

display as you press the SET SCHEDULE key.

WAKE is the time period you want the house at

a comfortable temperature when you get up and

while you get ready for work or school. When

deciding what time to set for your WAKE period,

include extra lead time, depending on the

outside temperature and your furnace response

time, to give the furnace a head start to heat the

house before you get up. (This will be a higher

temperature during heating season, or a lower

temperature during cooling season.)

LEAVE is the time period you can set for an

energy-saving temperature while you are away

at work or school. (This will be a lower tem-

perature during heating season, or a higher

temperature during cooling season.)

RETURN is the time period you want the

house at a comfortable temperature for

activities before bedtime. When deciding what

time to set for your RETURN period, include

extra lead time, depending on the outside

temperature and your furnace response time,

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