Always use a calibrated manometer at the 1/8" NPT pressure tap on the regulator's outlet side while the burners are firing to confirm the 15-30" W

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Precise Regulation: The 7-11" W

Reznor 163894 Capacitor Always use a calibrated manometerThe Reznor 163894 Capacitor is a high performance 4mfd 370v Oval Capacitor engineered primarily for use in venter motor and blower assemblies within Reznor gas fired unit heaters and duct furnaces. As a genuine HVAC motor run capacitor, it provides the precise electrical phase shift required to optimize motor torque and operational efficiency. This OEM Reznor replacement part features a single phase design suitable for 50 60 Hz systems, ensuring the