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the Watts 0881399 Air Gap is specifically designed for the 909 Series
and VR8205 models
preventing the setpoint drift often encountered with low-grade aftermarket alternatives
allowing technicians to verify pressure drops across the core without additional line taps
Can the lead wires be shortened during installation
York S1-024-39490-000 Pressure Switch the Watts 0881399 Air GapThe S1 024 39490 000 is a factory caliber York pressure switch engineered to monitor vital air pressure differentials within the combustion blower assembly. This 0. 26 WC pressure switch acts as a primary safety limit, confirming that the inducer motor is exhausting flue gases effectively before allowing the gas valve to energize. Built as a furnace pressure switch replacement, this component is the direct functional successor to the 024 27557 000,