Boiler Installation and Owners Manual
19
LDJ991_E01_R03_2006.03
Models LDJ991 and LDJ991-10
T
R O U B L E S H O O T I N G
Tips for Good Combustion
Trouble-free operation of the boiler requires
clean and dry corn, correct draft, and sufficient
combustion air.
Most burn problems in the boilers and boilers
are because of a few common problems. Before
making any repairs, replacing components, etc.
check for these common problems:
•
wet corn (best moisture is 12-14%)
•
dirty corn (lots of ground up corn and fines)
•
wrong variety or type of corn, such as high-
oil, waxy, or treated (seed corn)
•
improper draft (too little or too much)
•
insufficient combustion air (not enough fresh
air supply, or combustion blower not open far
enough).
Take the following steps to ensure best results:
•
use 12-14% moisture, standard variety, clean
corn from a local farmer
•
make sure draft is set correctly
•
make sure sufficient combustion air is
supplied.
Refer to the tables below for detailed troubleshooting:
Initial Setup Quick Check
Operation Quick Check
Problem
Possible Causes
Fire won’t start
Initial startup may require use of kindling wood two or three times
before the corn begins to burn completely.
Chimney draft too high
On tall or large chimneys, a second barometric regulator may be
required, or it may be necessary to reduce the outlet opening to
approximately 28 square inches.
Boiler inefficiency
Incorrect timing during low fire operation. After 24 hours of initial
operation, OFF time may be adjusted. Refer to “Operation” on
page 12 for timing adjustment information.
Boiler overheating
System not full of water and not at normal operating pressure.
Circulation pump not operating correctly; check circulation pump.
Problem
Possible Causes
Fire won’t start
Leftover ash and clinker buildup from previous use.
Fire goes out
Chimney draft too high; clinkers are building up.
Boiler inefficient and has too much ash
Wet or dirty corn; not enough combustion air; not enough draft; not
enough OFF time during low fire operation.
