Electrical Connections; Opening The Wiring Chamber - Viessmann VITODENS 200-W Installation And Service Instructions For Contractors

Electrical connections

Opening the wiring chamber

Note
If only PlusBus, the outside temperature sensor and
the cylinder temperature sensor are connected to the
heat generator, the wiring chamber does not need to
be opened.
2.
3.
6.
4.
Fig. 13
Note
Steps 1 to 3 are required only if the programming unit
is located at the bottom.
Do not disconnect the plug from the mounting panel.
Do not change the position of the cable or its fixture
(fixing point on casing).
1.
5. 2x
!
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.
Installation sequence
23