Pivoting down the control unit for commissioning and main-
tenance work
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
.
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.
Further details regarding the individual steps
23
Commissioning, inspection, maintenance
5592
883
GB
Service
Содержание VITODENS 343-F WS4A
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