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ensure the sensing bulb is fully seated within the immersion well and use thermal conductive paste if required by the specific application to eliminate air gaps
Key Benefits for the Technician Dual SPDT Switching: Two separate switches allow for simultaneous control and alarm functions
Encased in a rigid thermoplastic conduit box
Why is the external equalizer line critical for this model
Lochinvar & A.O. Smith 100208407 Switch Freon ensure the sensing bulb isThe Lochinvar & A. O. Smith 100208407 Blocked Flue Switch is a critical safety component designed for high efficiency condensing boilers and water heaters. As a factory authorized replacement for PRS2708 and PRS2708K, this blocked flue pressure switch is calibrated to a specific 55" WC set point to detect dangerous venting restrictions. When flue gases cannot exit the heat exchanger due to obstructions like bird nests, ice, or excessive condensate
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