Field Controls 46089800 Draft Inducer Proving Switch Kit

The Field Controls 46089800 DIP-1 Draft Inducer Proving Switch is a safety control device designed to verify proper draft pressure before allowing gas or oil-fired appliances to operate. This remote pressure sensing switch monitors negative pressure created by draft inducers to ensure safe combustion conditions in furnaces, water heaters, and boilers.

Complete Installation Kit Includes:

• Remote pressure sensing switch for accurate draft verification
• 5-foot length of aluminum tubing for flexible installation
• Pressure sensing fitting for secure connection
• Brass nut for durable mounting
• 1/4" O.D. compression nut and sleeve for leak-free connections

This proving switch is recommended for single appliance venting applications where draft inducers are used to overcome inadequate natural draft conditions caused by short chimneys, undersized vent pipes, long horizontal runs, or negative building pressures. The switch confirms that adequate negative pressure is established in the burner chamber before permitting the appliance to fire, providing an essential safety interlock for proper combustion air flow.

Ideal for residential and light commercial HVAC applications with oil or gas-fired heating equipment requiring draft verification controls.