Maintaining peak heater performance requires the right components for field adaptations. The Modine 3H0372660002 Natural to LP Conversion Kit is a critical service part for contractors converting Modine unit heaters from natural gas to liquid propane. This OEM-spec kit, also identified by part numbers 53080 and 63262, ensures the manifold pressure and orifice sizing align with LP fuel requirements. Built for the Modine Hot Dawg HD100 and HDS100 series, this kit is specifically designed for 100,000 BTU models equipped with Hot Surface Ignition (control code 34). Utilizing this Modine LP conversion kit ensures safe combustion parameters and prevents sooting or delayed ignition issues caused by improper fuel-to-air ratios. The package typically includes the necessary LP gas orifices, a high-quality gas valve regulator spring, and a conversion rating plate for compliance. Whether you are performing a new installation or a site retrofitting, this Modine unit heater conversion kit provides the technical precision needed to maintain thermal efficiency in commercial or residential garage settings. Key Benefits Precise Fuel Regulation: Includes a dedicated gas valve regulator spring to step up manifold pressure for propane's higher energy density. Optimized Combustion: Features precision-drilled orifices to maintain the 100,000 BTU rating while preventing carbon buildup. Seamless Compatibility: Direct replacement for Modine 53080 and 63262, ensuring fitment with HD100 and HDS100 unit heaters. Safety Compliance: Contains an official conversion rating plate to update the unit’s technical data for local inspections. Common Questions Is this kit compatible with spark ignition models? No, the 3H0372660002 is engineered for Hot Surface Ignition (HSI) systems. For spark ignition (AS) units, a separate conversion kit is required to ensure the control sequence remains operational. Does this kit work for high-altitude installations? This kit is rated for standard elevations (up to 2,000 feet). For installations at higher altitudes, additional high-altitude propane orifices may be necessary to compensate for thinner air and maintain proper burn. Can I use this for an HD75 or HD125 heater? No, orifice sizing is BTU-specific. Using a Modine HD100 LP kit on a different size heater will result in improper firing and potential equipment damage. Always verify your model number before installation. 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.
