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The external equalizer port monitors the actual pressure at the evaporator outlet
Common Questions Regarding the EF17BZ278:
As the direct replacement for 42-102341-02
it manages the synchronized operation of the 120V fan motor and the water solenoid valve
and valve timing to ensure stable burner operation and optimal boiler performance
Lochinvar & A.O. Smith 100291509 Anti-Scale System 320788-702 The external equalizer port monitorsThe Lochinvar & A. O. Smith 100291509 Anti Scale System, also known as the PP AS20, is a standalone water treatment system designed to mitigate hard water scale in high efficiency tankless water heaters and commercial boilers. Utilizing advanced Template Assisted Crystallization (TAC) technology, this unit converts dissolved calcium and magnesium minerals into inactive microscopic crystals. These crystals remain suspended in the water and pass safely
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