Resideo 50041890-002 Damper R-448A the factory-installed 12A49 vent limiter

the factory-installed 12A49 vent limiter eliminates the need for external vent piping in indoor installations when mounted in an upright

Common Questions & Contractor Tips

Manual Override: Features a 3mm hex manual adjustment for commissioning or emergency positioning without power

the materials used in the 86-8350-0800 are compatible with standard percentages of propylene and ethylene glycol commonly used in closed-loop hydronic systems

Fail-Safe Reliability: The mechanical spring return operation ensures the valve returns to its safe position immediately upon signal loss

Resideo 50041890-002 Damper R-448A the factory-installed 12A49 vent limiterEngineered for high capacity applications, the Resideo 50041890 002 is a heavy duty, 6 inch large bypass duct with automatic damper specifically optimized for the TrueEASE HE250 humidifier. This motorized assembly is a critical HVAC bypass humidifier replacement part designed to regulate the pressure differential between the supply and return plenums, ensuring optimal moisture delivery without compromising airflow integrity. The integrated automatic