York S1-029-20423-055 Burner Orifice

The York S1-029-20423-055 Burner Orifice is a precision-engineered component designed for high-performance LP conversion kits within York, Coleman, and Luxaire heating systems. This replacement gas orifice is manufactured with a drill size 55, specifically calibrated to meter Liquid Propane flow rates for residential furnace applications. Constructed from heavy-duty brass, this York furnace part ensures long-term resistance to thermal expansion and gas-stream corrosion, maintaining a consistent propane burner nozzle discharge coefficient. Field technicians must ensure manifold pressures are adjusted to manufacturer specifications when swapping these orifices to maintain proper combustion profiles. The S1-029-20423-055 is critical for achieving the correct BTU output and preventing soot accumulation or burner resonance. Accurate sizing is essential for maintaining the manifold’s gas velocity and ensuring reliable ignition across the burner bank in high-efficiency heat exchangers.

Key Benefits

• Precision Drill Size 55: Factory-cleared for accurate Liquid Propane (LP) metering and consistent BTU output.
• Durable Brass Construction: High-grade material prevents orifice deformation and resists wear from high-velocity gas flow.
• OEM Compatibility: Direct-fit replacement for Johnson Controls (York) equipment, ensuring physical and functional alignment with burner manifolds.

Common Questions

What is the specific application for this orifice size?
This #55 drill size orifice is specifically used for Liquid Propane (LP) conversions where a smaller aperture is required compared to standard Natural Gas orifices to compensate for the higher energy density of LP.

Is this orifice compatible with other brands?
While primarily a York/Johnson Controls part, it fits several Coleman and Luxaire models. Always verify the part number against the unit’s data plate and conversion chart before installation.

Does this require specialized tools for installation?
Standard manifold sockets or nut drivers are typically sufficient; however, a calibrated manometer is necessary to verify manifold pressure after the York S1-029-20423-055 is installed.

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.