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The LOCHINVAR L100275546 is a liquid propane venturi designed for use in Lochinvar NKC 110 condensing boiler applications. The venturi is a precision air-gas mixing component that sits in the burner assembly, drawing fuel and combustion air together in the correct ratio before the mixture enters the heat exchanger. Proper venturi function is critical to efficient, stable combustion and safe appliance operation. This part is replaced by licensed HVAC and boiler technicians as part of burner section service or when combustion performance has degraded due to component wear or damage.
This venturi is configured specifically for liquid propane fuel, making it a dedicated LP replacement rather than a universal or dual-fuel component. It is intended for the Lochinvar NKC 110 model, a high-efficiency condensing boiler commonly installed in residential and light commercial hydronic heating systems. Installation is typically performed during scheduled burner maintenance or as a corrective repair following combustion analysis findings.
Designed as a liquid propane venturi replacement for the Lochinvar NKC 110 condensing boiler.
Installation should be performed by a licensed HVAC or boiler technician familiar with gas-fired appliance service. Shut off the gas supply and disconnect electrical power to the appliance before beginning any burner section disassembly. After installation, a combustion analysis should be performed to verify proper air-fuel ratio and burner performance. Follow all applicable local codes and the manufacturer service documentation for torque and reassembly procedures.
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