Modine 5H0547510025 Orifice

The Modine 5H0547510025 Orifice is a critical OEM replacement part designed for Natural Gas unit heaters. Engineered for precision gas flow regulation, this main burner orifice ensures the correct stoichiometric ratio for efficient combustion in power-vented and gravity-vented systems. As a veteran-grade component, it provides the exact BTU input required to maintain factory-spec manifold pressure. This orifice is compatible with several high-output Modine series, including the PDP200, BDP200, BD400, and PA250 models, making it a staple for commercial and industrial HVAC mechanical contractors. Using a genuine 5H0547510025 orifice eliminates the safety risks associated with mismatched drill sizes or third-party components that can lead to delayed ignition or soot buildup. For field technicians, verifying the Modine unit heater orifice size against the nameplate is a prerequisite for any burner assembly service or gas type verification. Key Benefits

• Ensures accurate Natural Gas flow rate for consistent burner performance.
• Manufactured from durable materials to resist thermal stress and corrosion.
• Maintains the structural integrity of the Modine gas burner assembly.
• Direct OEM replacement for seamless fitment in PA, PD, and BDP series units.
• Critical for achieving Optimal Combustion Efficiency and safety in heating applications.

Common Questions

Is this orifice compatible with Propane (LP) units?
No, this part is specifically calibrated for Natural Gas applications. Converting a unit to Propane requires a different orifice size and potentially a spring kit for the gas valve.

What Modine heater models does the 5H0547510025 fit?
This main burner orifice fits popular models including the BAE125, PA250, PDP200, and larger 400 MBH series like the BD400.

Can I install this part myself?
Installation must be performed by a licensed HVAC technician to ensure proper manifold pressure calibration and leak testing.

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.