Cleveland Controls DFS-221-227 Switch This primary air restrictor is

This primary air restrictor is precision-stamped to regulate the volume of air entering the venter motor assembly

This non-positional relay features a universal break-off bracket

and ignition systems

facilitating precise alignment within the burner assembly

How do I verify if the 24V coil is functioning

Cleveland Controls DFS-221-227 Switch This primary air restrictor isThe Cleveland Controls DFS 221 227 is a precision engineered airflow proving switch specifically designed for duct heaters, ovens, and energy management systems. This fixed set point air pressure switch is factory calibrated to operate on a pressure rise at 0. 05" 0. 02" w. c., making it a reliable solution for applications where a non adjustable, tamper proof sensing component is required. Built with a durable plated housing and a high performance