Boiler Installation and Owners Manual
15
LDJ991_E01_R03_2006.03
Models LDJ991 and LDJ991-10
Power Failure Instructions
NOTE: If a power failure does not last longer
than 20 to 30 minutes, the boiler will cycle back
to operation without starting the fire. If the power
failure lasts an extended period of time, the
clinkers will have to be cleaned out of the burner
pot and the fire restarted.
IMPORTANT: When ashes are removed from
the ash pan, they should be placed in a metal
container with a tight fitting lid. The closed
container of ashes should be placed on a non-
combustible floor or on the ground, well away
from all combustible materials pending final
disposal. If the ashes are disposed of by burying
in soil or otherwise dispensed, they should be
retained in the closed container until all clinkers
have thoroughly cooled.
Summary of Settings and Operation
HIGH FIRE Adjustment
Adjustment of the combustion gate (1) on the side
of the combustion blower controls fuel air mixture
during high fire only. Only adjust this opening when
the combustion blower is running. Its adjustment
should yield an intense fire that consumes the fuel
at the same rate it is augered in.
LOW FIRE Adjustment
The rate of burn during low fire operation is
controlled by the amount of chimney draft.
Chimney draft must remain below 0.06 water
column inches and be consistant (refer to “Draft
Adjustment” on page 14).
To maintain the fire, the low fire timer will
activate the fuel feed system for a short period
of time followed by a longer period of no fan or
auger activity (LOW FIRE). Adjusting the on and
off cycle time controls the amount of fuel going
into the burner pot during low fire operation.
The LOW FIRE timer is located inside box (2)
and is factory set to cycle at 2 minutes ON and 6
minutes OFF. This is a suggested setting, but
can be adjusted depending upon user
experience.
After approximately 24 hours of operation, a
layer of ash and clinkers forms in the
combustion area. After they form, the OFF time
can be increased to reduce the amount of fuel
consumed during low fire.
1
2
