Honeywell CT2800 用户手册

69-1638—1

6

a.  Use the FUEL SWITCH 
on the back of the thermostat 
to set your new thermostat 
for the type of fuel that your 
heating system uses:    F–
gas or oil, or E–electric.

NOTE:  This setting enables 
proper fan operation.

b.  Use DIP switches 1 and 2 
on the back of the thermostat 
to set your new thermostat 
for your type of heating sys-
tem. See the Heating System 
Table on the next page to find 
the correct settings.

NOTE:  These DIP switches 
are factory-set for a warm air, 
gas, or oil heating system.

c. The thermostat is set to display the temperature in degrees Fahrenheit (°F). If you want to display the temperature 

in degrees Celsius (°C), turn DIP Switch 3 to Off position.

d. You can install the batteries and program your thermostat now, or you can wait until the thermostat is mounted on 

the wall. To install the batteries, see Step 7. To program the thermostat, see the Programming section.

M20637

R

W      Y      G

W     Y     G

C     R     R

THERMOSTAT BACK

DISPLAY   F

DISPLAY   C

3 - ON

3 - OFF

F

E

FUEL SWITCH

WARM AIR
FURNACE

1 - ON

2 - ON

F

1 - OFF 2 - ON

F

1 - ON

2 - OFF

E

FUEL SWITCH

POSITION

DIP SWITCH

POSITION

HEATING
SYSTEM

 C

 C

 C

1

OFF ON

2

3

HOT WATER OR
HIGH EFFICIENCY

ELECTRIC 
FURNACE