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The Reznor 112752 Blocked Flue Switch is a critical safety component designed for specific Reznor unit heaters
the SPDT 24V configuration is frequently utilized to trigger the indoor blower motor simultaneously with the first bank of heating elements to ensure proper airflow and prevent high-limit tripping
This kit is built for versatile field replacement
the Williams P147200 is built to withstand the rigorous cycling and thermal expansion typical of the 1403
the York S1-025-29041-005 Limit Switch is a critical OEM replacement part designed for high-limit temperature monitoring
Cleveland Controls DFS-221-112 Switch The Reznor 112752 Blocked FlueThe Cleveland Controls DFS 221 112 Switch is a fixed setpoint air pressure sensing switch designed for critical airflow proving in duct heaters, ovens, and energy management systems. This SPDT airflow switch is factory calibrated to actuate on a pressure rise at 0. 05" WC ( 0. 02" WC), making it an ideal solution for applications requiring a non adjustable, tamper proof safety interlock. Built with a durable silicone diaphragm and a zinc plated steel