Boiler Installation and Owners Manual
16
LDJ991_E01_R03_2006.03
Models LDJ991 and LDJ991-10
Variable BTU Timer (LDJ991-10 only)
The variable BTU timer is located inside box (3)
and is to vary the BTU output of the boiler.
Below are suggested timer settings to obtain
various BTU outputs from the LDJ991-10 boiler
when burning corn. The actual BTU output may
vary depending upon the characteristics of the
fuel being burned. Contact LDJ Manufacturing
for settings for other fuels (pellets, etc.).
The green arrow indicates the number of
seconds the timer is OFF (“1.5” = 15 seconds)
and the red arrow indicates the number of
seconds the timer is ON.
IMPORTANT: When adjusting the boiler,
always start with the settings for 100,000 BTU
output and then make further adjustments after
the boiler has run for thirty minutes.
2
BTU Output
Green Arrow
Red Arrow
Combustion Gate
165,000
0
3.0
full to half open
132,000
1.5
3.0
full to half open
100,000
1.5
2.0
half to one quarter open
90,000
1.5
1.5
half to one quarter open
80,000
1.5
1.0
half to one quarter open
