47
C
B
A
Fig. 40
2.
Connect the hose to the drain valve and route it
into a suitable container or drain outlet.
Note
Ensure adequate ventilation in the DHW pipework.
3.
Turn the drain valve from lever position
A
(opera-
tional) to lever position
B
or
C
as required.
■
Lever position
B
: The DHW circuit in the appli-
ance
excluding
the DHW cylinder is drained via
the cold water connection.
■
Lever position
C
: The DHW circuit in the appli-
ance
and
the DHW cylinder are drained via the
hot water connection.
The cold water connection remains filled.
Cleaning the loading cylinder
Note
According to EN 806, a visual inspection and (if neces-
sary) cleaning must be carried out no later than 2
years after commissioning, and as required thereafter.
Commissioning, inspection, maintenance
Draining the boiler on the DHW side
(cont.)
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