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The Field Vent Damper works automatically to allow natural draft during appliance operation while preventing residual appliance heat and conditioned air from escaping during off cycles. It also prevents the infiltration of cold air during down drafts. It’s made of stainless steel and is available in 8 sizes, 4" through 10" and 12".
Dual safety switches allow the burner to fire only when the damper is in the open position. This unit will not interfere with existing appliance safety controls, when properly installed.
| Dimensions (inches) | |||||
| Model | Pipe Size | Length | Height | Clearance | Exposed Pipe |
|---|---|---|---|---|---|
| A | B | C | D | E | |
| GVD-4PL | 4 | 6 1/16 | 8 7/8 | 15/16 | 4 13/16 |
| GVD-5PL | 5 | 6 1/16 | 9 7/8 | 15/16 | 4 13/16 |
| GVD-6PL | 6 | 6 1/2 | 10 7/8 | 1 3/16 | 5 1/4 |
| GVD-7PL | 7 | 7 1/16 | 11 7/8 | 1 7/16 | 5 13/16 |
| GVD-8PL | 8 | 8 1/16 | 12 7/8 | 1 15/16 | 6 13/16 |
| GVD-9PL | 9 | 10 1/8 | 13 7/8 | 3 | 8 7/8 |
| GVD-10PL | 10 | 12 1/8 | 14 7/8 | 4 | 10 7/8 |
| GVD-12PL | 12 | 12 1/8 | 16 7/8 | 4 | 10 7/8 |
| All dimensions are in inches and are approximate. Specifications subject to change. For the most current specifications, contact Field Controls. | |||||
The Field Vent Damper is installed in the vent pipe, after the draft hood, or barometric. During off cycles, it remains closed, preventing air flow through the vent. When there is a call for heat, the motor is energized, rotating the damper 90 degrees to an open position. Opening and closing takes approximately 15 seconds. When the damper is fully open, the burner is allowed to fire and flue gases pass freely through the vent. When the thermostat is satisfied, the burner stops, and the damper automatically closes. For service and trouble shooting, the damper can be locked in the open position.
