Technicians should use a manometer to verify that the damper opens at the correct static pressure setpoint for the specific air handler

always cross-reference the manufacturer part number on your existing housing

It is commonly used in high-pressure applications with R-22

ensuring proper airflow clearance and minimizing static pressure drop within the air handler cabinet

allowing for a seamless swap-out in compatible Nordyne

York S1-9951-0821 Orifice 320788-704 Technicians should use a manometerThe York S1 9951 0821 Orifice is a precision engineered #45 (. 082) LP gas orifice designed for liquid propane conversions and manifold pressure adjustments in residential and light commercial heating equipment. As a genuine HVAC OEM replacement part, this component ensures the precise fuel to air ratio required for clean combustion and optimal BTU input. This York burner orifice is critical for technicians performing LP gas conversion for York