Vaillant ecoCRAFT exclusive Operating Instructions Manual page 6

1 Safety
▶ If you cannot ensure the op-
eration, have a competent
person drain the heating in-
stallation.
1.3.10 Risk of injury and
material damage due
to maintenance and
repairs carried out
incorrectly or not
carried out at all
▶ Never attempt to carry out
maintenance work or repairs
on your product yourself.
▶ Faults and damage should
be immediately rectified by a
competent person.
▶ Adhere to the maintenance
intervals specified.
6
Operating instructions ecoCRAFT exclusive 0020149575_01