Field Controls 46487401 Vent Damper

The Field Controls 46487401, also known as the GVD-9PL, is a 24Vac automatic vent damper designed to improve the thermal efficiency of atmospheric gas heating systems. This 9-inch unit is the professional-grade direct replacement for Q35RL-1 models, ensuring seamless integration into existing boiler or furnace stacks. Engineered for stainless steel durability, the GVD-9PL gas vent damper operates by closing the flue pipe during the off-cycle, preventing standby heat loss and reducing infiltration air. This action maintains higher residual heat within the heat exchanger. This specific model is provided without harness, allowing technicians to utilize existing wiring or specialized field connections. It features a reliable dual-safety switch mechanism that ensures the burner only fires when the damper is in a fully open position, preventing flue gas spillage. This component is essential for optimizing AFUE ratings and reducing fuel consumption in residential and light commercial applications.

• Enhanced System Efficiency: Minimizes standby heat loss through the chimney, directly improving combustion system performance.
• Precision Fit: Serves as a 9-inch vent damper replacement with precise tolerances for 24V gas-fired appliances.
• Fail-Safe Operation: Integrated safety interlock prevents combustion if the damper blade is obstructed or closed.
• Robust Construction: Features a corrosion-resistant stainless steel body designed for high-temperature flue environments.
• Broad Compatibility: Replaces the legacy Q35RL-1 and works with most standard 24V control circuits.

Is the wiring harness included with the 46487401?
No, the 46487401 (GVD-9PL) is the damper assembly only. It is intended for applications where the existing harness is intact or a new custom harness is sourced separately.

Can this damper be installed on oil-fired equipment?
No, the GVD series is specifically designed and certified for atmospheric gas-fired appliances only.

What is the primary function of the safety interlock?
The interlock is a critical safety component that verifies the damper position, ensuring the burner remains disabled until the flue is fully cleared for exhaust.

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.