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Complete Kit: Includes all necessary mounting hardware and screws for immediate field replacement
By facilitating continuous air venting
A9E (externally equalized)
contractors should verify local lead-free compliance codes as specialized "LF" lead-free models are typically required for those applications
Cleveland Controls DFS-221-228 Pressure Switch Complete Kit: Includes all necessaryThe Cleveland Controls DFS 221 228 is a high reliability, non adjustable airflow proving switch designed for critical monitoring in duct heaters, ovens, and sophisticated energy management systems. Engineered for technicians who require a "set and forget" solution, this SPDT air pressure switch is factory fixed to operate on a pressure rise of 0. 05 0. 02" w. c., ensuring precise safety interlocks. Its compact, open mounted design is specifically