Field Controls 46487201 Vent Damper

The Field Controls 46487201 (Model GVD-7PL) is a 7-inch automatic vent damper designed to optimize thermal efficiency in gas-fired atmospheric heating systems. Operating on a 24Vac circuit, this power vent damper prevents standby heat loss by sealing the flue pipe when the burner is off, effectively maintaining heat within the heat exchanger. This model is engineered for seamless integration with intermittent ignition and standing pilot systems. It features a high-torque actuator motor and a stainless steel gate to withstand corrosive flue gases. As a 7" gas vent damper, it is a critical component for contractors performing HVAC efficiency upgrades or replacing failed OEM dampers. Note that this specific SKU is provided without harness, allowing technicians to utilize existing wiring or custom-length harnesses for specific job site requirements. The low-voltage flue damper design ensures reliable safety interlocking, preventing burner ignition until the gate reaches the fully open position.

• Reduced Standby Loss: Closes the vent pipe during off-cycles to minimize "stack effect" heat migration.
• Direct GVD-7PL Replacement: Standardized 7-inch diameter fits most residential gas furnaces and boilers.
• Reliable Actuation: Proven internal switching logic ensures the burner only fires when the damper is safely open.
• Durable Construction: Stainless steel shaft and gate assembly resist oxidation and moisture in the flue stream.
• Flexible Installation: Sold without a harness to accommodate various 24V control circuit configurations.

Can this damper be installed on oil-fired equipment?
No, the GVD-7PL is specifically designed and certified for use with Category I gas-fired appliances. For oil applications, a dedicated thermal or mechanical oil vent damper must be used.

Does this unit include the wiring harness?
This specific part number (46487201) is the damper and actuator assembly only. If the existing harness is damaged, a separate 4-pin or 6-pin Field Controls harness must be sourced based on the appliance's control board requirements.

What happens if the motor fails in the closed position?
The unit features an integrated safety interlock. If the vent damper actuator fails to rotate to the open position, the end switch will not close, preventing the gas valve from receiving power and ensuring no combustion occurs while the flue is blocked.

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.