Viessmann Vitocal 300-G Installation And Service Instructions Manual page 88

Installation sequence
Connection of electrical components
Fitting the front top panel
When all electrical connections have been made in the upper wiring area, fit the
front top panel as cover.
1. Guide the front top panel with the
angled tabs on both sides into the
associates slots and push back.
88
(cont.)
2. Push on earth conductor A and
insert the front screw to secure the
panel.