120-273 R4
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Note
If converting from Propane to Natural Gas, order the Natural Gas Conversion Parts Kit (IBC Part # P-303B)
from your authorized IBC Distributor.
Use the Propane Gas conversion parts kit if the fuel source at the site uses Propane and the modulating boiler has been
set up (factory fire-tested) to operate with Natural Gas. Check the rating plate on the boiler to see which fuel source the
particular boiler has been set up with.
Using this conversion kit, a qualified technician will need to:
1. Perform a fuel conversion.
2. Perform a combustion test.
3. Fill in the information required on the fuel conversion labels, and affix them to the boiler after the conversion is
completed.
Warning
This conversion kit shall be installed by a qualified service agency in
accordance with the manufacturer’s instructions and all applicable codes and
requirements of the authority having jurisdiction. If the information in these
instructions is not followed exactly, a fire, an explosion or production of
carbon monoxide may result causing property damage, personal injury or
loss of life.
The qualified service agency is responsible for the proper installation of this
kit. The installation is not proper and complete until the operation of the
converted appliance is checked as specified in the manufacturer’s
instructions supplied with the kit.
The boiler will automatically de-rate the maximum input at a rate of approximately 2% per 1,000’ above 4,500’. The gas
valves zero governor will ensure that the gas:air mixture is not affected at altitude.
Included with the Conversion Kit:
1 x LP Mixer Assembly, 399 G3 - Part # 500-114
3 x Screw, Zinc, M4x12 - IBC - Part # 150-164
1 x Mixing device O-ring Part # 150-073
1 x Rating Plate Fuel Overlay - Part # 080-242
1 x Gasket, gas valve coupler- IBC - Part # 255-035C1
1 x Gas Valve Conversion Label - Part # 080-107B
4 x Screw, SS, M5 x10 - IBC - Part # 150-076
1 x Installer Identifier Label - Part # 080-244A1
3 x Washer, Flat, SS, M4 - IBC - Part # 150-099
This conversion involves changing the mixing assembly. There is no propane orifice.
SL 40-399 G3 - Fuel Conversion to
Propane (NG to LP) P-Kit 302B
