Tecno-gaz PURA 10 BIOX Manual Del Usuario página 73

ENGLISH
WARNING!
In order to prevent any water leak during the non activity
time of the practice it is warmly advisable to sectionize the
water line of the practice from the water distribution
network by means of a solenoid valve. The Manufacturer
cannot be held responsible for damages to property, people
and/or animals deriving from the absence of this device or
of a similar system aimed at achieving the same result.
13