Modine 3H0206340002 Air Shutter

The Modine 3H0206340002 Air Shutter is a critical combustion component designed for Modine gas-fired unit heaters. This genuine OEM replacement part is the direct successor to the legacy Modine 3H20634-2, engineered to regulate the primary air-to-fuel ratio within the burner assembly. Proper adjustment of this primary air shutter control is essential for achieving a stable flame, ensuring complete combustion, and preventing soot accumulation or hazardous carbon monoxide buildup. Designed specifically for Modine propane (LP) heater setups, it provides the precise calibration required for Modine PD, PDP, PV, PAE, and PA series units. As an "on orifice" style component, it allows technicians to fine-tune airflow to match specific manifold pressures and environmental conditions. Constructing your combustion system with authentic Modine unit heater parts ensures long-term reliability and maintains the factory-specified performance levels required for demanding commercial and industrial heating applications.

• Direct OEM Replacement: Seamlessly replaces the discontinued Modine 3H20634-2 with exact factory specifications.
• Optimized Combustion: Enables precise air-to-fuel ratio adjustments to maximize thermal efficiency and burner performance.
• Broad Compatibility: Engineered for use across a wide range of Modine gas-fired unit heaters, including the PAE and PDP series.
• Safety Compliance: Critical for maintaining proper flame characteristics and reducing the risk of incomplete combustion.
• Durable Construction: Built to withstand the high-temperature environment of the burner tray without warping or degrading.

What happens if the air shutter is incorrectly adjusted?
If the Modine 3H0206340002 is opened too wide, it may cause a lifting flame or "blowing out." If closed too far, it results in a yellow, sooting flame, indicating incomplete combustion and potential CO hazards.

Is this part compatible with both Natural Gas and Propane units?
While air shutters are used in various configurations, this specific Modine air shutter is frequently utilized in propane heater setups where precise primary air mixing is vital for the heavier fuel gas.

Can I use the old hardware from my 3H20634-2?
Yes, as the 3H0206340002 is a direct functional replacement, it is designed to mount using the existing orifice and burner assembly hardware found in compatible Modine units.

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.