Viessmann VITODENS 050-W Installation And Service Instructions Manual page 2

Safety instructions
Safety instructions
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns
against the risk of
injury.
!
Please note
This symbol warns
against the risk of
material losses and
environmental pollu-
tion.
Target group
These instructions are
exclusively intended for
qualified contractors.
2
Note
Details identified by the
word "Note" contain addi-
tional information.
■Work on gas installations
may only be carried out
by a registered gas fitter.
■Work on electrical equip-
ment may only be car-
ried out by a qualified
electrician.
■The system must be
commissioned by the
system installer or a
qualified person author-
ised by the installer.