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1 Safety

6 Operating instructions HOME 0020224356_00

▶ Ensure that the supply of

combustion air is always free

of fluorine, chlorine, sulphur,

dust, etc.

▶ Ensure that no chemical sub-

stances are stored at the in-

stallation site.

1.3.11 Risk of material

damage caused by

frost

▶ Ensure that the heating in-

stallation always remains in

operation during freezing con-

ditions and that all rooms are

sufficiently heated.

▶ If you cannot ensure the op-

eration, have a competent

person drain the heating in-

stallation.

Vaillant HOME SYSTEM 12 -A User Manual

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