4 Installation of the built-in version by the competent person
88 Operating and installation instructions 0020266269_00
Note
The following description refers to the situation
in which the communication unit is installed in
the boiler. If the communication unit has been
removed from the boiler and installed on top of
the boiler, proceed in the same way to replace the
retaining box.
1. Disconnect the product from the power grid and protect
it against being switched back on.
2. Remove the boiler's front casing using work steps (A),
(B) and (C).
3. Remove the communication unit from the retaining box
by pushing the bracket very far upwards (A).
4. Tilt the communication unit forwards and out (B).
5. Remove the plug for the eBUS line and the power sup-
ply from the communication unit.
6. Remove the eBUS line from the retaining box's cable
duct (A).
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