Harman Magnum Stoker, Operating Manual

Page: 14 / 32

14
DO NOT BURN WET COAL
verti-Flow Stoker Control
This section describes the features and operations of
The Harman Verti-Flow Stoker Control. The timers are
adjustable from 0 minutes to 15 minutes in 1 minute
steps. There are red lights on the front panel to show
proper operation of the timer. One indicator shows power
is applied to the unit. The other 3 indicators show when
power is available at the adjacent receptacle.
The stoker control will be mounted on the side panel
of the feeder directly below the coal hopper. The three
receptacles and switch will be facing forward. The
power cord, 3 AMP fuse access port and the thermostat
connections to the rear.
The top receptacle provides power to the coal feeder
motor. Thus, the plug from the coal feeder motor should
be inserted into this receptacle.
The center receptacle provides power for the combustion
blower motor. Thus, the plug from the combustion blower
should be inserted into this receptacle.
The bottom receptacle provides power for the
distribution blower motor. Thus, this final receptacle
should be used by the plug from the distribution blower
motor.
restricter Plate
Fine Tuning draft
With a fire burning and stablized, take a
draft reading in the flue pipe and note the
reading. Next take a reading in the fire box
by removing the bolt in the front center of
the unit.
While watching the draft meter, close the
restricter plate on the combustion blower
slowly until the needle reads about the same
as it did on the flue. An example would be
a flue reading of .05 and a firebox reading
of .02. Close the restricter plate until the
firebox reading is .04 to.05. Closing the
restricter plate will reduce the positive
pressure from the blower and increase the
negative pressure in the firebox.
wArNINg!
If draft is at .00, carbon monoxide
will escape into the room. Too much
carbon monoxide can kill you.
Timer settings shown above will perform well in most cases.