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8
Water Supply
The performance of any unvented system is only as good as the mains water supply available. To
mains supplies both hot and cold services simultaneously. The water heater itself operates at a
pressure of 3bar, controlled by the inlet control set, and is capable of delivering over 50 litres per minute.
that primary pipework used has a minimum diameter of 22mm to ensure low pressure loss.
domestic installation 1.5bar and 25ltr/min should be regarded as the minimum. The
maximum mains pressure that the inlet control set can cope with is 10bar.
Change Of Water Supply
operation and/or life expectation of the water heater storage cylinder, pressure temperature relief
valve and heating unit.
Where there is a changeover from one water supply to another, e.g. a rainwater tank supply, bore
water supply, desalinated water supply, public reticulated water supply or water brought in from
another supply, then water chemistry information should be sought from the supplier or it should be
warranty to apply.
Water Chemistry
This water heater must be installed in accordance with this advice to be covered by the Joule™ war -
ranty. This water heater is manufactured to suit the water conditions of most public reticulated water
the water heater and its operation and/or life expectancy. If you are unsure of your water chemistry,
you may be able to obtain information from your local water supply authority.
Introduction
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