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When diagnosing furnace drainage issues or water leaks near the blower compartment
engineered to match the pin-out and resistance curve of the original OE213-02
The VAC24 is the modern technical equivalent designed to restore full functionality to these systems
the E3SA ensures precision monitoring and seamless integration with existing building automation systems
or glycol applications requiring a spring return stem up fail-safe position
Lochinvar & A.O. Smith 100233301 Switch 326058-755 When diagnosing furnace drainage issuesThe Lochinvar & A. O. Smith 100233301 Switch is a critical fixed setting Normally Open (N. O.) air pressure switch designed for negative pressure sensing applications in high efficiency venting systems. Calibrated specifically to 1. 25" WC, this OEM component serves as a primary safety proving switch, ensuring the combustion blower is generating sufficient draft before the ignition sequence initiates. For veteran technicians, this 100233301 pressure