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69-0446—2

S. M.  •  Rev. 3-95  •          •  ©Honeywell Inc. 1995  •  Form Number 69-0446—2

CT8602C

 Professional Fuel Saver Thermostat

Application

This thermostat provides energy saving control for a

24 Vac gas, oil, or electric heating or heating/cooling
system with independently controlled fan. System switch
positions include HEAT-OFF-COOL: fan switch positions
include ON-AUTO.

Power is supplied for the device by three AA alkaline

batteries (included in package). This allows the thermostat
to be compatible with all control applications.

Heat and cool anticipation is fixed; no adjustment is

necessary. Cycle rates are adjustable for heating.

The current rating is 1.6A maximum up to 30 Vac.

Recycling Notice

If this control is replacing a control that contains mer-

cury in a sealed tube, do not place your old control in the
trash. Contact your local waste management authority for
instructions regarding recycling and the proper disposal of
your old control.

If you have any questions, call Honeywell Inc. at 1-800-

468-1502.

Installation

WHEN INSTALLING THIS PRODUCT…

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a hazardous
condition.

2. Check the ratings given on the product to make sure

the product is suitable for your application.

3. After installation is complete, check out product

operation as provided in these instructions.

4. Allow thermostat to warm to room temperature

before operating.

CAUTION

Disconnect power supply to prevent electrical
shock or equipment damage.

IMPORTANT: Push excess wire back into the hole, and

plug the hole with non hardening caulk, putty or
insulation to prevent drafts from affecting thermo-
stat operation.

LOCATION

Install thermostat and wallplate about 5 ft. (1.5m)

above the floor in an area with good air circulation at
room temperature.

Do not install the thermostat where it may be affected by:
— drafts or dead spots behind doors, in corners, or under

cabinets.

— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall,

behind the thermostat.

IF REPLACING AN EXISTING THERMOSTAT

Turn off power to thermostat at furnace or boiler. A two-

transformer system may require turning off two switches or
disconnects. Remove any existing wallplate or subbase
from wall. To avoid miswiring later, label or write down
each wire with the letter or number on the wiring terminal
as the wire is removed.

IF NEW INSTALLATION

Run cable to the hole in the selected wall location, and

pull about 3 in. (76 mm) of wire through the opening.
Color-coded, 18 gauge thermostat cable with at least one
conductor for each wiring terminal is recommended.

MOUNTING WALLPLATE

Remove thermostat from wallplate (Fig. 1).
The wallplate does not require leveling for operation,

but only for appearance. The wallplate mounts directly
onto the wall with the screws included in the package. Use
the wallplate as a template, and with a pencil, mark two
mounting screw positions that best fit the application using
two of the three mounting holes in the wallplate (Fig. 2).
Use 3/16 in. bit to drill holes for anchors. Gently tap
anchors into holes until flush with the wall surface. Thread
wires through the center opening of the wallplate. Then
mount the wallplate using the two screws provided. Gently
tighten screws, level top surface of wallplate, and securely
tighten the screws.

Fig. 1—Removing thermostat from wallplate.

M3375

M3375

M8850

Summary of Contents for CT8602C

Page 1: ...prevent drafts from affecting thermo stat operation LOCATION Install thermostat and wallplate about 5 ft 1 5m above the floor in an area with good air circulation at room temperature Do not install the thermostat where it may be affected by drafts or dead spots behind doors in corners or under cabinets hot or cold air from ducts radiant heat from sun or appliances concealed pipes and chimneys unhe...

Page 2: ...event electrical shock or equipment damage The shape of the terminal barrier permits insertion of straight or conventional wraparound wiring connections Either method is acceptable Refer to Table 1 and Fig 4 through 8 for wiring guide lines NOTE Keep all wiring restricted to ribbed area surrounding terminals Fig 3 to assure thermostat wallplate contact TABLE 1 TERMINAL CROSS REFERENCE FOR STRAIGHT...

Page 3: ...onalrecovery an indicator appears in the lower right corner of the thermo stat display as a reminder that the Adaptive Intelligent Recovery feature is not active Fig 10 Fig 10 Conventional recovery indicator SETTING TIME TEMPERATURE The display readout can be converted between a 12 and 24 hour clock or C and F using screws 2A and 2B as indicated in Fig 9 INSTALLING BATTERIES Power is supplied for ...

Page 4: ...splay will read 1 00 PM and room tempera ture It will go off for a few seconds then begin to flash on and off Press Press TIME or to set the current time Press Press to set the current day Each press of the DAY KEY advances the display one day If the display does not come on Check mounting of thermostat to wallplate If loose or misaligned remove thermostat and reinstall on wallplate making sure it...

Page 5: ...about 10 F 6 C below room tempera ture The heating equipment should shut off COOLING CAUTION Do not operate cooling if outdoor temperature is below 50 F 10 C Refer to manufacturer s rec ommendations NOTE When cooling setting is changed thermostat will wait up to five minutes before turning on the air condi tioner This delay protects the compressor Move the system switch to COOL and the fan switch ...

Page 6: ...nk 04 Blank 01 Blank 00 Blank CHECK EACH POSITION 12 See note A OFF 08 Blank 13 Microprocessor mask no and revision no 09 Blank 14 Blank HEAT 14 Heating on 1 14 Heating off OFF 10 Blank 11 Normal operating display CHANGE TO LAST PERIOD SKIP NEXT PERIOD PRESENT SETTING PRESENT SETTING PRESENT SETTING WARMER COOLER AHEAD RETURN LEAVE BACK WAKE SLEEP DAY SET HEAT COOL SET PRESENT DAY TIME SET PRESENT...

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