Sanden
Heat
Pump
–
Owner’s
Manual
Page
14
of
20
Water Supply Quality (Supplemental)
Chloride and PH
In areas with a high concentration of chloride in the water, that water can cause
corrosion and subsequent failures. Where the chloride level exceeds 0.1 ounces per
gallons (200 mg/litre), the warranty is no longer valid on to the heat pump unit and tank
unit.
PH is a measure of whether the water is alkaline or acid. In an acidic water supply, the
water can attack the parts and cause them to fail.
No warranty coverage is given on the heat pump unit and tank unit where the PH is
less than 6.0.
Supply Water with a PH less than 6.0 may be treated to raise the PH.
It is recommended that an analysis of the Supply Water be conducted before
connecting the Heat pump unit to the system.
Figure 7 Chlorides and PH
Change of water supply
Changing, or alternating, from one water supply to another can have a detrimental
effect on the operation and/or life expectation of the water tank unit cylinder, PR valve,
water heating circulation and the heat exchanger in the system.
Where there is a changeover from one water supply to another, for example, a
rainwater tank supply, desalinated water supply, public recirculated water supply or
water brought in from another supply, then water chemistry information should be
sought from the supplier or the water should be tested to ensure it meets the warranty
requirements in this installation manual.
