Technical data

WATER SUPPLIES
33
CHLORIDE AND PH
Where the chloride level exceeds 250 mg/L the manufacturer‟s warranty does
not apply to the water heater. In a high chloride water supply, the water can
corrode stainless steel parts and cause them to fail.
Where the pH is less than 6.0 the manufacturer‟s warranty does not apply to
the water heater. pH is a measure of whether the water is alkaline or acid. In an
acidic water supply, the water can attack stainless steel parts and cause them
to fail.
Water with a pH less than 6.0 may be treated to raise the pH. The water supply
from a rainwater tank in a metropolitan area is likely to be corrosive due to the
dissolution of atmospheric contaminants.
SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The water heater, including this heat pump module, is not suitable for certain
water chemistries. Those chemistries are listed below. If the water heater is
connected at any time to a water supply with the following water chemistry, the
manufacturer‟s warranty will not cover any resultant faults:
Water Chemistry
Saturation Index (SI) < -1.0
Saturation Index (SI) > +0.4
Chloride > 250 mg/L
pH < 6.0
Refer to “Water Supplies” in the Owner‟s Guide and Installation Instructions
supplied with the storage tank for the complete water supply statement.