Viessmann VR1 22 Installation And Service Instructions Manual page 21

Vitorond 100, VR1 22 to 33, 91 to 140 Installation and Service
Safety Connections (Vitotronic Control)
(continued)
1. To avoid problems with removing the top panel,
we recommend moving the top panel screw
approximately 3" to the left or right. To do so,
pre-drill the panel with an
To reinstall the top panel, drill a new
through the top back panel and into the back panel.
Reinstall the screw P into this new mounting hole.
Connections
d
" drill bit.
d
" pilot hole
21