Lochinvar & A.O. Smith 100093632 Switch 320788-704 the transformer must be replaced

the transformer must be replaced after the underlying circuit fault is corrected

this 3-phase Copeland scroll provides the axial and radial compliance necessary for superior liquid handling and operational longevity in the field

offering a direct 1:1 replacement for vintage or modern boards that utilize this specific switching logic

eliminating the need for extensive repiping or mounting modifications

are specifically designed for high-pressure applications and offer broader compatibility with modern refrigerants compared to older SGN versions

Lochinvar & A.O. Smith 100093632 Switch 320788-704 the transformer must be replacedThe Lochinvar & A. O. Smith 100093632 Switch is a critical safety component designed for high efficiency commercial boilers and residential water heaters, including the Polaris PG series. This heavy duty air pressure switch is factory calibrated to a 1. 6" w. c. setpoint, ensuring the combustion blower provides sufficient drafting before the ignition sequence initiates. Utilizing an SPDT (Single Pole Double Throw) configuration with normally open (N.