Installation manual

Sanden Heat Pump – Installation Manual
Page 24 of 32
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 9 ounces per 66 gallons (250
mg/litre), the warranty is no longer valid on to the heat pump unit and tank unit.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 14
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.