Viessmann Vitodens 100 Installation And Service Instructions Manual page 20

Preparing the installation
Installation Requirements
&
It is not necessary to have a pur-
pose provided air vent in the room
or internal space in which the appli-
ance is installed.
&
If the boiler is to be installed in a
cupboard or compartment, no per-
manent air vents are required for
cooling purposes in the cupboard or
compartment, however, it is essen-
tial to ensure that the minimum
clearances stated in page 7 are
maintained.
See also "Boiler position" on
page 15.
20
(cont.)