7. Check the safety devices (particularly the valve or safety unit),
referring to the instructions provided with these components.
CAUTION
During the heating process, a certain amount of water may
flow through the valve or safety unit, this is caused by
water expansion. This phenomenon is completely normal
and must in no event be hindered.
5.3
Drinking water quality
In regions where the water is very hard (TH > 20 °f), we recommend
fitting a softener.
The hardness of the water must always be between 12 °f and 20 °f to
be capable of providing effective protection against corrosion.
The softener does not bring about derogation of our warranty,
provided that the softener is:
- approved and set in accordance with the codes of practice and the
recommendations given in the instruction manual for the softener
- regularly inspected
- regularly serviced
BL 150...500-2
5. Commissioning
18/11/2015 - 7607674-001-04
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