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The AO SMITH 100109300 is a propane final burner assembly kit designed as a heating component for LP gas water heaters. This kit includes a 50-orifice configuration sized for propane fuel delivery, making it a direct service part for restoring proper combustion performance in LP-fired units. It is rated for operation up to 200 degrees F. Licensed plumbers and HVAC technicians are the typical installers for this type of burner assembly replacement.
This burner assembly kit is used in propane (LP) water heater applications where the original burner has degraded, suffered physical damage, or requires replacement as part of a combustion system service. It is suited for residential and light-commercial LP water heating installations where maintaining correct fuel metering and flame distribution is critical to safe and efficient operation.
Designed as an OEM-style replacement burner assembly for propane-fired LP water heaters requiring a 50-orifice final burner configuration.
This part should be installed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the appliance manufacturer's service documentation. Shut off the propane gas supply and allow the unit to cool completely before beginning any burner assembly work. Inspect all gas connections for leaks using an approved leak-detection solution after reassembly before returning the unit to service. Do not modify the orifice size or burner geometry.
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