Description
The York S1-024-35267-000 is an OEM-grade Single Pole Normally Open (SPNO) pressure switch designed to close on a fall in pressure, providing reliable safety and operational control in York HVAC systems. With set points of 0.6 and 1.05 (inches W.C.), this switch is engineered to monitor draft pressure in furnace and air handler applications, ensuring the system operates only when safe pressure conditions are confirmed.
How It Works
This SPNO pressure switch remains in the open (de-energized) state under normal conditions and closes its circuit when a drop in pressure is detected. This “close on fall” action is a critical safety function in induced-draft and condensing furnace systems, verifying that the draft inducer is operating correctly before allowing ignition to proceed.
Key Features
- Single Pole Normally Open (SPNO) configuration
- Close on fall pressure action for draft safety monitoring
- Set points: 0.6 / 1.05 inches W.C.
- OEM York replacement part — direct fit for compatible York systems
- Helps prevent unsafe ignition under insufficient draft conditions
- Durable construction for long-term reliability in demanding HVAC environments
Application
This pressure switch is a direct OEM replacement for compatible York furnaces and air handling equipment. It plays a vital role in the safety sequence of operation, protecting heat exchangers and ensuring proper combustion airflow before the burner is allowed to fire.
Product Specifications
- Brand: York
- Part Number: S1-024-35267-000
- Switch Type: SPNO (Single Pole Normally Open)
- Action: Close on Fall
- Set Points: 0.6 / 1.05 inches W.C.
- Application: Furnace / Draft Inducer Pressure Monitoring
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