Always verify the power element charge is appropriate for the specific refrigerant in use

this unit is specifically valved and lubricated for R410A refrigerant and POE oils

This kit is designed for 3/8" valves

always verify the specific FLA (Full Load Amps) of your equipment against the switch data plate to ensure proper sizing

Lochinvar & A.O. Smith 100291509 Anti-Scale System R-410A Always verify the power elementThe 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