4Part 1 Propane Conversion Procedure1.Install LP-Mixera. Check that the code of the LP-Mixer is the one indicated for the model of
boiler to be converted – see Table 1.
b. Turn the 120 V AC power and gas supply off to the boiler.
c. Remove the front and top covers from the unit.
d. Remove the Natural Gas Mixer, Gas Outlet Manifold and Silencer Box as
an assembly from the boiler:
i. Remove the four 5 mm hex key head screws securing the Gas Outlet
Manifold to the Gas Valve.
ii. Remove the six 5 mm hex key head screws securing the Natural Gas
Mixer to the Fan.
e. Remove the Natural Gas Mixer from the assembly (keep gaskets and
hardware for reassembly):
i. Remove the four 4mm hex key head screws and 8 mm nuts securing
the Gas Outlet Manifold to the Natural Gas Mixer.
ii. Remove the four Philips head screws securing the Silencer Box to the
Natural Gas Mixer.
f. Assemble the Gas Outlet Manifold and Silencer Box to the applicable
LP-Mixer (Table 1), reusing the original hardware. Verify that the gaskets
are correctly positioned and in good condition.
g. Install the LP-Mixer, Gas Outlet Manifold and Silencer Box assembly into
the boiler, reusing the original hardware. Verify that the O-rings located
at the gas valve and fan are correctly positioned and in good condition.
h. Turn the gas valve Throttle Screw clockwise (in) 1 turn – see Figure 1.
i. Turn the gas supply on and check for leaks in all gas piping, including the
inlet connection to the gas valve, using a soap and water mixture.
j. Proceed to Part 2: Gas Valve and Burner Setup.
