Electrical Connections - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Installation sequence
Opening the control unit casing
5.

Electrical connections

Information on accessory connection
For the connection, observe the separate installation instructions provided
with the accessory components.
!
Please note
Electronic assemblies can be damaged by electrostatic discharge.
Before beginning work, touch earthed objects, such as heating or water pipes,
to discharge static loads.
14
(cont.)
7x
4.