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the Resideo Q3451B1004/B is specifically configured for natural gas with the BCR-18 orifice
or frost formation on the evaporator coil
Manual Override: Features a manual opening lever for system filling
the R325C10-P12 is specifically sized and tensioned for 325-3 Series regulators
If you have 24VAC at the valve but it fails to shift
Field Controls 46487201 Vent Damper R-410A the Resideo Q3451B1004/B is specificallyThe 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