Vaillant aroTHERM plus VWL 105/6 A 230V S2 Operating Instructions Manual page 50

– to constructional conditions that may
affect the operational reliability of the
product
1.3.3 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 spe-
cified.
1.3.4 Risk of material damage caused by
frost
▶ Ensure that the heating installation always
remains in operation during freezing con-
ditions and that all rooms are sufficiently
heated.
▶ If you cannot ensure the operation, have a
competent person drain the heating install-
ation.
1.3.5 Danger caused by improper
operation
Improper operation may present a danger to
you and others, and cause material damage.
▶ Carefully read the enclosed instructions
and all other applicable documents, par-
ticularly the "Safety" section and the warn-
ings.
▶ Only carry out the activities for which in-
structions are provided in these operating
instructions.
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Operating instructions 0020326637_00