Viessmann Vitodens 100-W Installation Instructions Manual page 11

Opening the Vitodens
Installation and service instruc-
tions
Replacing the control unit
!
Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
4.
3.
5.
7.
2.
4x
Prior to commencing any work,
touch earthed objects such as
heating or water pipes to dis-
charge static loads.
2x
6.
GB
1.
11