Lennox Hearth P/N 775 024M Rev. C Manuale Utente
CARE AND OPERATION
PAGE 14
Heat Output Switch - The Heat Output switch activates
both the convection and combustion blowers and the au-
ger motor. If the exhaust does not reach operation tem-
perature within 25 minutes, the stove will automatically
shut down. If this occurs, repeat the lighting procedure
(pre-lighting instructions).
“OFF” position - The “Off” position on the Heat Output
switch will turn the stove off by turning off the auger mo-
tor. The remaining fuel in the grate will safely burn up.
Once the stove has cooled sufficiently the blowers will
shut off automatically.
“HIGH HEAT” position - The “High Heat” position on the
Heat Output switch will increase the fuel feed rate and
blower speed for maximum heat output.
both the convection and combustion blowers and the au-
ger motor. If the exhaust does not reach operation tem-
perature within 25 minutes, the stove will automatically
shut down. If this occurs, repeat the lighting procedure
(pre-lighting instructions).
“OFF” position - The “Off” position on the Heat Output
switch will turn the stove off by turning off the auger mo-
tor. The remaining fuel in the grate will safely burn up.
Once the stove has cooled sufficiently the blowers will
shut off automatically.
“HIGH HEAT” position - The “High Heat” position on the
Heat Output switch will increase the fuel feed rate and
blower speed for maximum heat output.
“LOW HEAT” position - The “Low Heat” position on
the Heat Output switch will decrease the fuel feed rate
and blower speed.
Auger “On” Light - The red L.E.D. light on the control
panel indicates when there is power to the auger motor.
Under normal operation, this light will blink on and off.
Fuel Feed Trim Control - The fuel feed trim control on
the control panel should be used when the damper con-
trol will not correct a poor combustion problem. Turning
the trim control counter clockwise will decrease the
amount of fuel entering the UltraGrate
the Heat Output switch will decrease the fuel feed rate
and blower speed.
Auger “On” Light - The red L.E.D. light on the control
panel indicates when there is power to the auger motor.
Under normal operation, this light will blink on and off.
Fuel Feed Trim Control - The fuel feed trim control on
the control panel should be used when the damper con-
trol will not correct a poor combustion problem. Turning
the trim control counter clockwise will decrease the
amount of fuel entering the UltraGrate
and turning the
trim control clockwise will increase the amount of fuel
entering the UltraGrate
entering the UltraGrate
. The trim adjustments com-
pensate for fuel differences. Factory set “ON” time is
1.9 seconds. The trim range is 1.6 to 4.5 seconds. Fac-
tory “OFF” time for low is fixed at 4.2 seconds and for
high it is fixed at 2 seconds
1.9 seconds. The trim range is 1.6 to 4.5 seconds. Fac-
tory “OFF” time for low is fixed at 4.2 seconds and for
high it is fixed at 2 seconds
CONTROL BOARD
Note: This control board is not thermostat or igniter capable.
Fuel Feed Trim Control
Auger On Indicator
HEAT OUTPUT
LOW HEAT
HIGH HEAT
OFF
Operating
Instructions
1. Light fire and close
door.
2. Slide switch at right
to “LOW HEAT.”
3. After pellets are burn-
ing adjust switch to
desired heat setting.
desired heat setting.
4. To turn off stove,
slide the switch to the
“OFF” position.
“OFF” position.