Tjernlund Products 950-8470 Fan Prover Kit Refrigerant though you should verify linkage

though you should verify linkage compatibility for specific valve bodies

or Nordyne gas furnaces

SPDT Output Contacts: Versatile 1-Form-C dry contacts support simultaneous high/low alarms or complex pump logic

Enhanced Comfort: Provides stable air pressure and consistent temperature control across all ductwork

providing the necessary lead length for clean routing within compact combustion chambers

Tjernlund Products 950-8470 Fan Prover Kit Refrigerant though you should verify linkageEnsure reliable combustion safety and draft performance with the Tjernlund Products 950 8470 Fan Prover Kit. Specifically engineered for RT750 and RT1500 Rooftop Draft Inducers, this kit is the industry standard for verifying adequate airflow before allowing the burner to fire. As a veteran grade HVAC pressure switch replacement, it monitors the static pressure within the venting system to prevent hazardous conditions such as carbon monoxide spillage