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Rosewood paper grain — description and returns beneath the overlapping buy card.
meaning the contacts remain open even if pressure returns to normal
Automatic Reset Logic: Eliminates nuisance service calls by automatically restarting the burner when water levels are stabilized
40" WC for precise airflow verification
1 standards for professional-grade installations
Smith replacement part for guaranteed fit and proper alignment with heating elements
Lochinvar & A.O. Smith 100093633 Switch 328140-751 meaning the contacts remain openThe Lochinvar & A. O. Smith 100093633 Pressure Switch is a critical OEM safety component engineered for high efficiency water heating systems, including Polaris water heaters. This 0. 85" WC pressure switch operates as a normally open contact that closes when the inducer fan generates sufficient static pressure, ensuring the combustion cycle only proceeds under safe venting conditions. As a direct Polaris IS22085 replacement, this kit provides a