Honeywell CT3451 Handleiding

Honeywell Thermostaat CT3451

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® U.S. Registered Trademark

OWNER’S GUIDE

69-1620-1

CT3451

Programmable Thermostat

Programmable Heat and/or Cool

Low Voltage (20 to 30 Vac) Thermostat and Wallplate

Congratulations on the purchase of your new thermostat!

More than 100 years of Honeywell engineering produced

this thermostat that can provide you with a more

comfortable and convenient living environment.

Your new thermostat automatically controls the

temperature in your home, keeping you comfortable

while saving energy when programmed according to

these instructions.

Direct questions about this thermostat to our Web site at

www.honeywell.com/yourhome or call the customer

information line at 1-800-468-1502.

MERCURY NOTICE

If this control is replacing a control that contains

mercury in a sealed tube, do not place your old

control in the trash. Dispose of it properly.

Contact your local waste management authority

for instructions regarding recycling and the

proper disposal of an old control.

1 PREPARE FOR INSTALLATION

❑Check Table 1 to make sure this thermostat is

compatible with your system. If not, return it to the

retailer.

❑Acquire tools and items, as needed. See Fig. 1.

Fig. 1. Required installation tools/supplies.

M10614

MERCUR

SWITCH

YPICAL LOCATION OF A MERCURY

WITCH IN A THERMOSTAT

M20551

SCREWDRIVER HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED TO

DRILL HOLES IN WALL

WIRE CUTTER/STRIPPER IF NEEDED TO STRIP WIRES

LEVEL, IF NEEDED TO LEVEL

THERMOSTAT FOR APPEARANCE

CT3451 PROGRAMMABLE THERMOSTAT

69-1620—1 2

2 REMOVE OLD THERMOSTAT

❑Test to be sure your heating and air conditioning

systems (where applicable) are working correctly. If

not, 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).

Not compatible with any 120/240 volt circuit.

aCompatible with 2-wire Honeywell zone valves. Isolating relay required for zone valves that have a 3-wire thermostat

connection.

CAUTION

Equipment Damage Hazard.

Handling wires during installation can

damage equipment.

Disconnect power at furnace or main breaker/

fuse box before beginning installation.

❑Carefully unpack your new thermostat and wallplate

and 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 screw that locks on the cover.

❑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 the wiring labels

(enclosed) to label each wire with the old terminal

designation. If there are only two wires, they do not

require labeling. Wrap wires around a pencil to keep

them from falling back into the wall as shown in Fig. 2.

Fig. 2. Wrapping wires around pencil.

Replacing Clock WIth C or C1 Clock

Terminals

If you are replacing a Honeywell Chronotherm®

Thermostat, you may 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 can damage your transformer. Disconnect the

wires and wrap them separately using electrical tape; do

not wrap them together. Do not place the wires where

they can interfere with the new thermostat operation.

Record the colors and terminal designation labels of the

remaining wires.

Six or More Thermostat Wires

If there are six or more wires connected to the thermostat

(excluding clock wires attached to terminals), you

probably have a variation of a multistage heat pump or

other multistage system. The thermostat is not

compatible with these systems, so return the product to

your retailer. If you want information about which

programmable thermostats work with your system, visit

our Web site at www.honeywell.com/yourhome or call the

customer information line 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 works only if a contractor installs an isolating

relay on these systems. For details, contact a local

heating/cooling contractor.

Table 1. Compatibility Chart.

System Type Compatible With CT3451

Gas—standing pilot Yes

Gas—electronic ignition Yes

Gas-fired boilers Yesa

Gas—750 millivolt Yes

Oil-fired boilers Yesa

Oil-fired furnace Yes

Electric furnace Yes

Electric air conditioning Yes

Single stage heat pumps (no backup or auxiliary heat) Yes

Baseboard electric (120/240 line volt) No

Multistage heat pumps/multistage equipment No

WIRES THROUG

WALL OPENING

M5136

CT3451 PROGRAMMABLE THERMOSTAT

3 69-1620—1

3 MOUNT WALLPLATE

IMPORTANT

Level for appearance only. The thermostat func-

tions normally even when not mounted level.

❑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. See

Fig. 3.

Fig. 3. Mounting wallplate to wall.

❑Remove the wallplate from the wall and drill two 3/16-

in. holes in the wall (if drywall). For firmer wall material

such as plaster or wood, drill 7/32-in. holes. Gently tap

provided anchors into the drilled holes until flush with

the wall.

❑Reposition the wallplate, pulling wires through the

wiring opening. Loosely insert the mounting screws

into the holes.

❑Level for appearance only; the thermostat functions

correctly even when not level. Tighten the mounting

screws.

4 WIRE WALLPLATE TERMINALS

All wiring must comply with local electrical codes and

ordinances. If unsure about household wiring

procedures, call your local heating and air conditioning

contractor.

Refer to the labels you placed on wires when you

removed your old thermostat.

❑Match the letter of your old thermostat wire with the

terminal of the corresponding letter on your new

thermostat. Refer to Fig. 4.

Fig. 4. Connecting wiring.

NOTE: To ensure correct mounting of thermostat,

restrict all wiring to the shaded area in the cen-

ter of the terminals.

❑Loosen the terminal screws and slip each wire

beneath its matching terminal. The shape of the

terminals permit insertion of straight or wraparound

connections. See Fig. 5. Tighten the terminals.

Fig. 5. CT3451 methods for wiring connection.

❑Plug the hole in the wall with insulation to help prevent

drafts from adversely affecting thermostat operation.

The CT3451 Thermostat is powered with 3AA alkaline

batteries and is adaptable to most 18 to 30 Vac heating-

cooling systems. Refer to Fig. 6 through 10 for typical

system wiring diagrams.

M12202A

WALL WALL

ANCHORS (2)

WALLPLATE

WHEN USING WALL ANCHORS, DRILL 3/16 INCH

HOLES FOR DRYWALL, 7/32 INCH HOLES FOR

PLASTER OR WOOD.

MOUNTING

SCREWS (2)

ERMINAL

CREW

M12559A

FOR STRAIGHT

INSERTION STRIP

5/16 IN. (8 MM)

FOR WRAPAROUND

STRIP 7/16 IN. (11 MM

)

M1253

FOR WRAPAROUND, STRIP

7/16 IN. (11 mm)

FOR STRAIGHT INSERTION

STRIP 5/16 IN. (8 mm)

Product specificaties

Merk:	Honeywell
Categorie:	Thermostaat
Model:	CT3451

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