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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
SPNO Close-On-Fall Logic: Prevents furnace ignition unless the inducer motor establishes sufficient negative pressure
If your furnace blower runs constantly or the system is short-cycling without reaching the thermostat setpoint
Optimized Signal Strength: Ensures consistent microamp readings for the furnace control board to prevent nuisance trips
or DH400/500 series
Use a manometer to verify the inducer is pulling at least -0
Antunes Controls 8021202056 Pressure Switch Els PW 17895 SPNO Close-On-Fall Logic: Prevents furnaceThe Antunes Controls 8021202056 (SMD Series) is a high precision air differential pressure switch engineered for critical proving applications in HVAC and energy management systems. This SPDT air pressure switch features a versatile sensing range of . 17 1" W. C., providing reliable monitoring of positive, negative, or differential air pressure. Built with a rugged sheet metal housing and a sensitive diaphragm, it ensures accurate setpoint indication
US$ 249.50
US$ 121.00
US$ 27.00