Fenwal 35-663904-113 Ignition Module R-410A The York S1-024-35266-000 Pressure Switch

The York S1-024-35266-000 Pressure Switch is a critical OEM safety component engineered for precise drafting and combustion air monitoring in high-efficiency York furnace systems

It is a staple in older Barber Colman systems for monitoring variables such as temperature

The integrated switch is fixed to trigger at a 10-degree angle to provide consistent signaling of the end-stop or safety position

While some hardware may overlap

Moisture Protection: Advanced moisture barrier prevents ambient humidity from migrating into the hose and contaminating system oil

Fenwal 35-663904-113 Ignition Module R-410A The York S1-024-35266-000 Pressure SwitchThe Fenwal 35 663904 113 Ignition Module is a microprocessor based 24VAC Hot Surface Ignition (HSI) control designed for precise timing and consistent performance in commercial and residential gas fired appliances. This Fenwal 35 66 series module integrates a built in inducer blower relay and pressure switch monitoring, streamlining the combustion sequence by managing the blower and verifying airflow before the trial for ignition (TFI) begins. With a