Field Controls 46487301 Vent Damper

The Field Controls 46487301 (Model GVD-8PL) is a heavy-duty, 8-inch automatic gas vent damper designed for seamless integration with 24Vac heating systems. This stainless steel vent damper serves as a direct replacement for Q35RJ-1 and is compatible with both intermittent ignition and standing pilot systems. Engineered to optimize gas boiler efficiency, the motor-driven assembly automatically closes the flue during off-cycles to prevent conditioned air and residual heat from escaping. When the thermostat calls for heat, the 24V motor rotates the 8" damper blade 90 degrees in approximately 15 seconds. High-reliability dual safety switches ensure the burner only fires once the damper is in the fully open position. The unit features corrosion-resistant stainless steel construction and a keyed wiring connector to prevent incorrect field connections. This model is supplied without a harness, making it an ideal choice for technicians performing HVAC flue repairs or upgrading existing natural draft appliances.

• Universal Compatibility: Operates with all 24 VAC, 60Hz natural draft gas appliances using intermittent or standing pilot ignition.
• Superior Construction: Built with stainless steel to provide maximum protection against flue gas condensate and corrosion.
• Advanced Safety: Integrated dual end switches provide a positive interlock, ensuring the system cannot fire until the vent is cleared.
• Maintenance Ready: Includes a manual hold-open switch to simplify HVAC troubleshooting and burner service without removing the damper.
• Direct Replacement: Designed as a drop-in Field Controls 46487301 match for the legacy Honeywell Q35RJ-1 model.

Does this damper include the 24V wiring harness?
No, the 46487301 / GVD-8PL is the damper assembly only. A separate wiring harness is required for the initial installation or when replacing a damaged harness.

Can this be used on a power-vented system?
This 8 inch gas vent damper is specifically designed for natural draft appliances and should be installed in the vent pipe after the draft hood or barometric control. It is not intended for high-pressure power vent applications.

Is this compatible with oil-fired boilers?
This specific model is calibrated for gas systems. For oil-fired applications, a dedicated oil vent damper must be used to accommodate different flue gas temperatures and safety requirements.

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.