Lennox 69W27 Orifice
The Lennox 69W27 is a precision-engineered 1/16" natural gas orifice designed specifically for compatible Lennox gas-fired heating units. This gas burner orifice serves as the critical metering component within the manifold assembly, ensuring the correct BTU input and stoichiometric fuel-to-air ratio for safe combustion. Machined from heavy-duty brass to resist corrosion and thermal degradation, the 69W27 burner nozzle maintains a consistent 0.0625-inch aperture diameter, which is vital for preventing delayed ignition or incomplete combustion. When performing a Lennox furnace repair or a natural gas conversion, replacing a clogged or out-of-spec orifice is essential for restoring thermal efficiency. This OEM Lennox part ensures exact tolerances that aftermarket alternatives often fail to meet, minimizing the risk of soot accumulation or localized overheating of the heat exchanger. Verify your specific furnace orifice size requirements against the manufacturer’s manifold pressure specifications to ensure optimal pressure drop across the burner port.
- Precise Metering: Maintains exact gas flow rate to ensure peak furnace performance and consistent heat output.
- OEM Compatibility: Designed specifically for Lennox heating systems, guaranteeing a precise thread fit and seating within the gas manifold.
- Corrosion Resistance: High-grade brass construction prevents orifice blockage from natural gas impurities and moisture.
- Standardized Sizing: Features a 1/16" (0.0625) drill size, calibrated for standard natural gas manifold pressure settings.
Common HVAC Technical Questions
What is the drill size for the Lennox 69W27?
The Lennox 69W27 features a 1/16" aperture, which corresponds to a #52 drill size, typically used in natural gas furnace applications requiring precise BTU regulation.
Can this orifice be used for LP conversion?
No, this specific gas orifice is calibrated for natural gas. For liquid propane applications, a smaller orifice diameter is required to account for the higher energy density and manifold pressure of LP.
How do I identify if the 69W27 needs replacement?
Technicians should inspect for physical obstructions, evidence of cross-threading, or "whistling" sounds that indicate the 1/16" orifice is damaged or improperly seated.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $25.08
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Description
The Lennox 69W27 is a precision-engineered 1/16" natural gas orifice designed specifically for compatible Lennox gas-fired heating units. This gas burner orifice serves as the critical metering component within the manifold assembly, ensuring the correct BTU input and stoichiometric fuel-to-air ratio for safe combustion. Machined from heavy-duty brass to resist corrosion and thermal degradation, the 69W27 burner nozzle maintains a consistent 0.0625-inch aperture diameter, which is vital for preventing delayed ignition or incomplete combustion. When performing a Lennox furnace repair or a natural gas conversion, replacing a clogged or out-of-spec orifice is essential for restoring thermal efficiency. This OEM Lennox part ensures exact tolerances that aftermarket alternatives often fail to meet, minimizing the risk of soot accumulation or localized overheating of the heat exchanger. Verify your specific furnace orifice size requirements against the manufacturer’s manifold pressure specifications to ensure optimal pressure drop across the burner port.
- Precise Metering: Maintains exact gas flow rate to ensure peak furnace performance and consistent heat output.
- OEM Compatibility: Designed specifically for Lennox heating systems, guaranteeing a precise thread fit and seating within the gas manifold.
- Corrosion Resistance: High-grade brass construction prevents orifice blockage from natural gas impurities and moisture.
- Standardized Sizing: Features a 1/16" (0.0625) drill size, calibrated for standard natural gas manifold pressure settings.
Common HVAC Technical Questions
What is the drill size for the Lennox 69W27?
The Lennox 69W27 features a 1/16" aperture, which corresponds to a #52 drill size, typically used in natural gas furnace applications requiring precise BTU regulation.
Can this orifice be used for LP conversion?
No, this specific gas orifice is calibrated for natural gas. For liquid propane applications, a smaller orifice diameter is required to account for the higher energy density and manifold pressure of LP.
How do I identify if the 69W27 needs replacement?
Technicians should inspect for physical obstructions, evidence of cross-threading, or "whistling" sounds that indicate the 1/16" orifice is damaged or improperly seated.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
