Honeywell D - Manual (Page 6)

69-0917—2 6
T8112C,D ELECTRONIC PROGRAMMABLE THERMOSTATS
CHECKOUT
Heating
Do not check heating system operation by jumpering
thermostat terminals at the primary control such as the
gas valve, zone valve, or oil burner control This will
damage the thermostat. Instead, you could jumper R
and R wires at the thermostat.
Cooling
To avoid possible compressor damage, do not operate
the cooling system when outside temperature is below
50
°
F (10
°
C). See compressor manufacturer instructions
for further information.
NOTE: When cooling setting is changed, thermostat
can delay up to five minutes before turning on
the air conditioner. This delay protects the
compressor.
Fan
Move the thermostat system switch to OFF and the fan
switch to ON. The fan should run continuously. With the
system switch still in the OFF position, move the fan
switch to AUTO; the fan should stop.
Move the system switch to HEAT and the fan switch
to AUTO.
Press key until the setting is about 10
°
F (6
°
C) above room
temperature. Heating should start and the fan should run
after a short delay (immediately if fan operation switch is
set in E position).
Press key until setting is about 10
°
F (6
°
C) below room
temperature. The heating equipment should shut off.
Move the system switch to COOL and the fan switch
to AUTO.
Press key until setting is about 10
°
F (6
°
C) below room
temperature. The cooling equipment and fan should start.
Press key until the setting is about 10
°
F (6
°
C) above room
temperature. The cooling equipment and fan should stop.
Move the system switch to OFF and the fan switch to
AUTO. The system and fan should be off.