Bedienungsanleitung Honeywell CT2400 (Seite 3 von 14) (Englisch)

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Prepare For Installation

❑

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

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

TABLE 1 -COMPATIBILITY CHART.

System Type

Compatible With CT2400

Gas-Standin~ Pilot

Yes

Gas-Electro~c

Ignition

Gas-Fired Boilers

Gas—Millivolt

Oil-Fired Boilers

Y:AA

OWired Furnace

Yes

Electric Furnace

Yes

Electric Air Conditioning

Yes

Baseboard Electric (120/240 Line Volt)

Heat

PumpdMultistage

Equipment

.,-.

——-.,

I-,-

. . .

..L

---- .fin/n”n

.._i.

-:.-..:.

lNoI

compaurm

WIIrI

arly

al~+u

VUIL

cxrum.

~Compatible

with 2-wire Honeywell zone valves. Isolating relay required

for3-wire

thermo-

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

~Compatible

with

hot

water baseboard systems. Will not work efficiently on steam or

gravity systems.

Remove Old Thermostat

[1 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 the package of screws,

instructions and receipt.

U Remove cover from old thermostat. If it

does not snap off

when pulled firmly from the

bottom, check for a screw used to lock on the

cover.

Replacing a Clock Thermostat that has C

or Cl Clock Terminals?

If you are replacing a Honeywell

Chronotherm@

Thermostat, you may find one

or two wires that go to the C or Cl 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 sepa-

rately, 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.

Six or more wires?

If there are six or more wires (excluding

clock wires attached to terminals), you

most likely have a variation of a heat pump

❑

Loosen screws holding thermostat to

subbase,

wallplate

or wall, and lift away.

Disconnect wires from 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 thermo-

stat, you will

ako

not be connecting it to your

new thermostat. Keep the wires from falling

back into the wall by wrapping them around a

pencil as shown.

——.

—

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 program-

mable thermostats will 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 will work with your system.

However, some hot water (zoned) heating

systems have three thermostat wires. The

thermostat will not work without installing an

isolating relay on these systems. For details,

call Honeywell Customer Assistance at 1-800-

468-1502.

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