1.4 Water quality
This heat pump and its components is developed to reliable and efficient work with water qualities in line with VDI 2035. In practice this
means that some general precautions should be taken:
As a heating system often contains small amounts of suspended solids (rust) and sludge products from calcium oxide, precaution should
be taken to ensure that the water in the heating system is as clean as possible to ensure long lasting performance and minimize the risk
of reliability issues. If magnetite can be expected in the heating system, cleaning of system and /or installation of magnetite filters
should always be considered. Any filters supplied with the heat pumps should always be installed. The dirt strainer should be fitted on
the return line from the heating system, as close to the heat pump as possible.
Heating system, hot water and brine circuit
Chemical and/or oil contamination shall always be avoided. In areas where there are exceptional water conditions with regards to hard
water, a softening filter may be necessary to use/install. The softening filter softens the water, cleans any impurities and prevents the
buildup of calcification. The hot water tank is designed to work well in all normal drinking water qualities in line with the European
drinking water directive ( 98/83/EC ). With regards to chloride level this means that it is approved to up to 250 mg/l.
Installation Guide Atlas & Calibra
Thermia AB BWCA01IG0202
5
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