Rheem 610340 Owner's Manual And Installation Instructions page 11

SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The storage tank and its components are not suitable for certain water chemistries. Those chemistries are
listed below. If the storage tank is connected at any time to a water supply with the following water chemistry,
the Rheem warranty will not cover any resultant faults on the components listed below:
Water Chemistry
Total Dissolved Solids (TDS) > 2500 mg/L
Total Dissolved Solids (TDS) not suitable for anode type
Saturation Index (SI) > +0.4
(if an expansion control valve is not fitted)
Component
storage tank cylinder
storage tank cylinder
storage tank cylinder
temperature pressure relief valve
11
WATER SUPPLIES