Honeywell CT2095 Manual de usuario

Place Bar Code Here

69- 1385

OWNER’S GUIDE

Honeywell/20

Programmable Thermostat

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

Programmable Heat and/or Cool

Low Voltage (20 to 30 Vac)

Thermostat and Mounting Plate

Model CT2095

2 69-1385

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 when

programmed according to the instructions in

this manual.

Direct any questions concerning the application

of this thermostat to Honeywell Consumer

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

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

MERCURY NOTICE

If this thermostat is replacing a thermo-

stat that contains mercury in a sealed

tube, do not place your old thermostat in

the trash. Dispose of properly.

Contact your local waste management

authority for instructions regarding recy-

cling and the proper disposal of your old

thermostat. If you have questions, call

Honeywell Customer Response Center

at 1-800-

468-1502.

Typical location of

a mercury switch

in a thermostat.

M3701

MERCURY

SWITCH

3 69-1385

Contents

Step 1. Prepare for Installation ..................................................................................................... 4

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

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

Step 4. Program Thermostat ........................................................................................................ 11

Step 5. Adjust Fan Operation Switch, As Required ...................................................................... 19

Step 6. Adjust System On-Time, °F/°C, As Required ................................................................... 19

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 ................................................................................................................. 31

Limited One-Year Warranty .......................................................................................................... 35

4 69-1385

Step 1. Prepare for Installation

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

retailer. For more information, call Honeywell Consumer Services, 1-800-468-1502, Monday -

Friday, 7 am to 5:30 pm, Central time.

Not compatible with any 120/240 volt circuit.

aCompatible with Honeywell 2-wire 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. Does not work efficiently on steam or gravity systems.

Table 1. Compatibility Information.

System Type Compatible with CT2095

Gas—Standing Pilot Yes

Gas—Electronic Ignition Yes

Gas-Fired Boilers Yesa,b

Gas—Millivolt No

Oil-Fired Boilers Yesa,b

Oil-Fired Furnace Yes

Electric Furnace Yes

Electric Air Conditioning Yes

Baseboard Electric (120/240 Line Volt) No

Heat Pumps/Multistage Equipment No

5 69-1385

❑Acquire tools and items as needed (see illustration). Also purchase two AA alkaline batteries; we

recommend Energizer® batteries.

M13544

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

LEVEL, IF NEEDED TO LEVEL

THERMOSTAT FOR APPEARANCE

6 69-1385

Step 2. Remove Old Thermostat

❑Test to be sure 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 the system at the furnace,

or at the fuse/circuit breaker panel.

❑Carefully unpack your new thermostat and

mounting plate, saving package of screws,

instructions and receipt.

❑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.

❑Loosen screws holding thermostat to

subbase, wallplate or wall, and lift away.

❑Disconnect wires from old thermostat or

subbase. As you disconnect each wire,

attach one of the enclosed labels to each old

terminal designation. If there are only two

wires, they do not need labeling. If there is

an extra wire that is not connected to your

old thermostat, you also do not connect it to

your new thermostat. Keep the wires from

falling back into the wall by wrapping them

around a pencil as shown.

WIRES THROUGH

WALL OPENING

M5136

7 69-1385

Replacing a Clock Thermostat that has

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. Place the wires where

they do not interfere with the operation of the

new thermostat. Recordthe colors andterminal

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. This thermostat is not compatible with

those systems so return the product to the

retailer. If you want information about the

programmable thermostats that work with your

system, call Honeywell Consumer Services 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

Consumer Services at 1-800-468-1502.

8 69-1385

Step 3. Install Batteries

IMPORTANT

Batteries must be installed for the pro-

gramming and operation of the ther-

mostat 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.

❑Open the top cover of thermostat to access

control panel and battery compartment.

❑Make sure the thermostat is set to the Off

position.

❑Use a coin to remove the battery cover.

M12492

REMOVING

BATTERY

DOOR

BATTERY

DOOR COVER

9 69-1385

❑Install the fresh batteries as shown, making

sure positive and negative terminals are

oriented correctly.

❑Replace the battery cover.

As the batteries run low, a bAt Lo indicator

flashes for one to two months before the

batteries run out completely. Replace the

batteries as soon as possible after the indicator

starts flashing. If you do not replace the

batteries sometime during the flashing bAt Lo,

the indicator eventually stops flashing. bAt Lo

then stays on without flashing, indicating the

thermostat and heating/cooling system have

stopped working and the batteries are almost

completely dead.

After the batteries are completely dead, the

bAtLo indication disappears, leaving a

completely blank display.

INSTALL TWO AA ALKALINE

BATTERIES AS SHOWN

M1713

10 69-1385

Press down on the left ends of batteries to

remove them. If you insert the new batteries

within 20 to 30 seconds of removing the old

ones, you do not need to reprogram the

thermostat. However, if the display is blank, the

batteries are dead or incorrectly installed and

you must reprogram. See Step 4.

IMPORTANT

Although the thermostat has a low bat-

tery indicator, replace the batteries

once a year to prevent the thermostat

and heating/cooling system from shut-

ting down due to lack of battery power.

As a precaution, when leaving home

for longer than a month, change bat-

teries before you leave to prevent the

system from shutting down due to lack

of battery power.

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