Viessmann VITOROND 100 Installation And Service Instructions Manual page 38

Connections
Burner Set-up (Beckett control)
Installation of Vitotronic control (continued)
Fig. 34
38
(continued)
6.
6. Channel power supply cable or
Power/Pump Module cable (for
Vitotronic 200) and all other
120 VAC cabling through back
opening toward boiler control.
7. Channel low voltage cables (i.e.
sensor cables) through cable
opening toward boiler control.
8. Coil excess cabling and tuck
between side panel and insulation.
WARNING
Always route all cables and capillaries
between nylon backed insulation and
metal enclosure panels, never directly
on cast iron heat exchanger.
9. Tighten strain reliefs.