Viessmann Vitoligno 200-S Installation And Service Instructions Manual page 12

Installation sequence
Fitting the thermal insulation
Fitting the retaining rails
Fig. 5
Loosely fit the retaining rails; do not tighten the screws.
Note
The screws are not tightened until the tie-bars have
been fitted and the base protection plate is installed
(see page 15).
12
4,8 x 9,5
■ When fitting the front left rail, pay attention to the
cables of the door contact switch.
■ If any edges of the thermal insulation jacket protrude
at the sides, push them behind the retaining rails.