Model 500; Models 600 - 800; Leveling The Boiler - Lochinvar KBN399 Installation & Operation Manual

2
Prepare boiler

Model 500

1. Remove the top access cover from the unit (no tools
required for removal).
2. Turn the adjustment screw on the gas valve clockwise until
it stops. Then turn the adjustment screw counterclockwise
four and three quarter (4 3/4) turns (see FIG. 2-3).
3. Use a combustion analyzer to verify CO
of 9.6 – 10.5%. If not, adjust the screw counterclockwise
incrementally to raise CO
(FIG. 2-3).
4. After adjustment is complete, attach the propane conversion
label (in the conversion kit bag) next to the boiler rating
plate. Attach the LP caution label (in the conversion kit bag)
to the left side of the unit in the lower left corner.
5. Replace the top access cover.
After converting to LP, check combustion
WARNING
per the Start-up procedure in Section 10 of
this manual. Failure to check and verify
combustion could result in severe personal
injury, death, or substantial property
damage.
Figure 2-3 Gas Valve Adjustment - Model 500

Models 600 - 800

1. Remove the top access cover from the unit (no tools
required for removal).
2. Remove the cover on top of the gas valve (FIG. 2-4).
3. Turn the adjustment screw on top of the gas valve clockwise
one and three quarter (1 3/4) turns on the 600 Model, one
and a half (1 1/2) turns on the 700 Model, and one turn on
the 800 Model (see FIG. 2-4).
4. Use a combustion analyzer to verify CO
of 9.6 – 10.5%. If not, adjust the screw counterclockwise
incrementally to raise CO
(FIG. 2-4).
5. After adjustment is complete, attach the propane conversion
label (in the conversion kit bag) next to the boiler rating
plate. Attach the LP caution label (in the conversion kit bag)
to the left side of the unit in the lower left corner.
6. Replace the gas valve cover along with the top access cover.
(continued)
is within the range
2
and clockwise to lower CO
2
ALLEN WRENCH
ADJUSTMENT SCREW
is within the range
2
and clockwise to lower CO
2
After converting to LP, check combustion
WARNING
per the Start-up procedure in Section 10 of
this manual. Failure to check and verify
combustion could result in severe personal
injury, death, or substantial property
damage.
Figure 2-4 Gas Valve Adjustment - Models 600 - 800
COVER
2
ALLEN WRENCH

Leveling the boiler

1. Set the boiler in place and check level.
a) Adjust legs if necessary to level boiler, see FIG. 2-5
below.
Figure 2-5 Leveling Legs on the Boiler
2
Installation & Operation Manual
ADJUSTMENT SCREW
SCREWDRIVER
SLOT
LOWER
RAISE
13