Description
Cleveland Controls NS2-1831-02 Overview
The Cleveland Controls NS2-1831-02 is a 2-stage high negative pressure switch engineered for dependable pressure sensing and safety control in commercial and residential HVAC systems. With a setpoint of -0.35 inches water column (w.c.), this switch is designed to prove proper draft, combustion airflow, or induced-draft fan operation — helping protect equipment and ensure safe, efficient system performance.
Key Features
- 2-stage switching action for precise, staged pressure control
- Negative pressure (vacuum) sensing at -0.35″ w.c. setpoint
- Designed for induced-draft and combustion air proving applications
- Compact, durable construction suited for demanding HVAC environments
- Cleveland Controls NS-series reliability trusted by HVAC professionals
Typical Applications
- Induced-draft blower proving on gas furnaces and boilers
- Combustion air pressure verification
- Draft hood and venting system safety interlock
- Air handler and AHU static pressure monitoring
Specifications
- SKU / Part Number: NS2-1831-02
- Brand: Cleveland Controls
- Switch Type: 2-Stage High Negative Pressure Switch
- Pressure Setpoint: -0.35″ w.c. (inches water column)
- Sensing Medium: Air / negative static pressure







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