ensuring reliability under pressure surges

or the furnace short cycling—shutting down shortly after ignition before reaching the thermostat setpoint

Always verify your specific ICP model number and serial number to confirm the exact primary or secondary heat exchanger requirements

Engineered with a 3/8 inch bore and a clockwise (CW) rotation

it ensures consistent delivery for optimal combustion efficiency

Cleveland Controls NS2-1239-00 Pressure Switch L99H008 ensuring reliability under pressure surgesThe Cleveland Controls NS2 1239 00 is an industrial grade air flow pressure sensing switch specifically designed to monitor positive, negative, or differential air pressure in HVAC systems. This fixed set point pressure switch is factory calibrated at . 70" w. c. (inches water column), ensuring high accuracy for critical safety applications such as proving fan flow or detecting filter blockage. Built with a glass filled polycarbonate housing and a