Pinnacle Speakers GBU070 - Manual (Page 4)

CONTROL AND COMPONENT FUNCTIONS
AUGER The auger transfers the pellet fuel from the hopper end of the burner tube down
and into the fire pot.
AUGER MOTOR The auger drive motor turns the auger.
BURNER TUBE The burner tube contains two passageways, one for the auger tube and the
other for combustion air. This tube supplies both the fuel and combustion air to the fire pot.
BLOWER The blower forces return air over the furnace heat exchanger and into the home’s
duct system. The blower is controlled by the fan limit control.
CUP MOTOR The cup drive motor turns the cup which dispenses fuel from the pellet hopper
to the auger.
DRAFT INDUCER The draft inducer takes combustion air, forces it down the burner tube
and into the fire pot where combustion occurs. The flame can be adjusted by regulating
the damper on the draft inducer.
FAN LIMIT CONTROL
The fan limit control automatically activates the blower on
temperature rise, and disengages on temperature fall. Normally, this control is set to bring
the blower on at 140°F and then turn off at 100°F. The fan limit control also features a
200°F limit, where if the temperature for whatever reason may climb to 200°F this control
cuts power to burner, but keeps the blower running to cool the heat exchanger. NOTE: IF
YOU ARE REPLACING THE FAN LIMIT CONTROL, MAKE SURE THE BRASS
CONNECTOR IN THE MIDDLE IS SNIPPED OR REMOVED, IF IT IS NOT IT WILL RUN
CONTINUOUSLY.
FIREPOT The fire pot is where combustion occurs. Pellets are delivered into the fire pot by
the auger. The heat of the fire in the fire pot causes gases to oxidize off the pellets, and as
the combustion air mixes with these gases, they burn with a flame similar to that of an oil
or gas fire.
HOPPER The hopper is where the pellets are stored and then funnelled down to feed the
cup.
SAFETY DISC The safety disc interacts with the burner for positive flame protection to
guard against misfires and to shut down the burner in the event of the fuel hopper running
dry. If the burner loses its flame potential, misfires, or runs out of fuel, the safety disc will
drop out, locking out the burner.
BURNER LIMIT If the unit should ever burn back into the burner tube, the 200°F limit will
open the circuit, shutting the entire burner down. The burner will not start until it is
manually reset. If this should happen, locate the cause before resetting limit and relighting
unit.
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