Rheem 71000 Manual -

Search for the water heater’s own model number (e.g., PROG40-38N F110) on Rheem’s website. The 71000 is just one part of that system.

A common critique is the need for regular descaling, especially in hard-water areas. If the unit is used in a business where uninterrupted supply is critical, Rheem recommends building in system redundancy. Installation: rheem 71000 manual