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SCREWDRIVER
SLOT
LOWER
RAISE
Figure 2-5 Leveling Legs on the Boiler
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.
ALLEN WRENCH
ADJUSTMENT SCREW
Figure 2-3 Gas Valve Adjustment - Model 500
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
2
is within the range
of 9.6 – 10.5%. If not, adjust the screw counterclockwise
incrementally to raise CO
2
and clockwise to lower CO
2
(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.
COVER
A
LLEN WRENCH
ADJUSTMENT SCREW
Figure 2-4 Gas Valve Adjustment - Models 600 - 800
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
2
is within the range
of 9.6 – 10.5%. If not, adjust the screw counterclockwise
incrementally to raise CO
2
and clockwise to lower CO
2
(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.
ƽ WARNING
After converting to LP, check combustion
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.
ƽ WARNING
After converting to LP, check combustion
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.
2 Prepare boiler (continued)
Installation & Operation Manual
13