Modine 3H0369740001 Conversion Kit

The Modine 3H0369740001 Conversion Kit is a critical OEM component designed for the field conversion of specific Modine gas-fired unit heaters from propane (LP) to natural gas. As a veteran-grade LP to natural gas conversion kit, this package includes the high-precision natural gas orifices and gas valve conversion springs necessary to recalibrate the fuel-to-air ratio for efficient combustion. This Modine replacement part is engineered for Modine Hot Dawg and PTP/PTS series units, ensuring seamless integration with existing manifold assemblies. By utilizing this HVAC conversion kit, technicians can adjust the manifold pressure and burner throughput to meet manufacturer specifications for natural gas operation. It is essential to verify the unit's control code and gas valve manufacturer (Honeywell, White-Rodgers, or Robertshaw) to ensure a precise Modine heater conversion. Correct installation maintains the unit’s thermal efficiency and operational integrity without compromising the heat exchanger’s service life. Key Benefits

• OEM Precision: Includes factory-specified natural gas orifices for accurate BTU input regulation.
• Specific Compatibility: Designed for Modine unit heaters with hot surface or spark ignition systems.
• Complete Field Kit: Contains all necessary springs, orifices, and required conversion labeling for the serial plate.
• Performance Optimization: Restores factory-rated performance levels when transitioning to natural gas heating.

Common Questions

Which Modine models are compatible with this kit?
This kit is typically utilized for Modine Hot Dawg (HD) and PTP series units, but you must check your specific model number and control code (often code 34 for natural gas) on the rating plate to ensure a match.

Does this kit include a new gas valve?
No, this is a conversion kit that modifies your existing gas valve using a custom-weighted spring and replaces the burner orifices; the gas valve itself remains in place.

Why is a conversion kit required instead of just swapping the gas line?
Propane and natural gas have different energy densities and pressure requirements. This kit ensures the correct orifice drill size and manifold pressure are set to prevent hazardous "over-firing" or inefficient combustion.

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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.