Opening The Control Unit Enclosure; Electrical Connections - Viessmann Vitodens 222-F Installation And Service Instructions Manual

Installing the boiler

Opening the control unit enclosure

1.
5.
Fig. 10

Electrical connections

!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
16
2x
2.
3.
4.
4x