4
Part 1 Propane Conversion Procedure
1.
Install LP-Mixer with
LP-Diaphragm
a. Check that the code of the air / gas mixer
and the diameter of the gas diaphragm
are those indicated for the model of boiler
to be converted – see Table 1.
b. Turn the 120VAC power supply OFF to the
boiler.
c. Turn the gas supply OFF.
d. Remove the front cover from the unit.
e. Remove the silencer.
f. Unscrew the two nuts and remove the
gas pipe.
g. Remove the three bolts securing the
NG-mixer to the blower and remove the
NG-Mixer.
NOTICE: 150/150C NG-MIXERS ARE
EQUIPPED WITH AN NG DIAPHRAGM
LOCATED ON THE MIXER GAS LINE INLET
(SEE FIGURE 4 FOR GENERAL DIAPHRAGM
LOCATION).
NOTICE: SAVE THE NG-MIXER (AND NG
DIAPHRAGM FOR 150/150C) IN-CASE THE
BOILER NEEDS TO BE CONVERTED BACK
TO NATURAL GAS AT A LATER DATE.
h. Secure the LP-Mixer (with LP Diaphragm)
to the blower in the same position as the
removed NG-Mixer, reusing the bolts from
the previous step.
NOTICE: VERIFY THE O-RING SEAL
BETWEEN THE MIXER AND BLOWER IS
CORRECTLY POSITIONED AND IN GOOD
CONDITION BEFORE ASSEMBLING.
Figure 2 - Remove the gas pipe
Figure 4 - Insert the LP-diaphragm
Figure 3 - Remove the NG-mixer
LP - Gas diaphragm
Figure 1 - Remove the Silencer
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