Further Details Regarding The Individual Steps; Pivoting Down The Control Unit For Commissioning And Maintenance Work; Filling The Heating System - Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual

Further details regarding the individual steps

Pivoting down the control unit for commissioning and main-
tenance work

Filling the heating system

!
Please note
Unsuitable fill water increases the level of deposits and corrosion and
may lead to damage on the compact boiler.
Thoroughly flush the entire heating system prior to filling it with water.
Only use fill water of potable quality.
Soften fill water with hardness exceeding 3.0 mmol/l, e.g. use a small
softening system for heating water (see Vitoset price list).
An antifreeze additive suitable for heating systems can be mixed with
the fill water.
Commissioning, inspection, maintenance
1. Open flap A.
2. Release the side closures B and
pivot control unit C forward.
3. Release the side screws and pivot
control unit C down with its retain-
ing frame D.
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