Filling The System - STIEBEL ELTRON HSBC 300 cool (GB) (WPM) Operation And Installation Manual

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installation
1 Retainer
2 Insulated connection pipes
f Install the connection pipes in sequence, starting on the left
or right depending on the positioning of the appliance.
f Insert the connection pipes through the retainer from below.
f Secure the connections to the appliance using the union nuts.
f Connect the pipes of the pipe assembly to the domestic pipe-
work system.
10.3.3 DHW circulation line (optional)
A DHW circulation line with external DHW circulation pump can
be fitted to the DHW circulation connection (see chapter "Specifi-
cation / Dimensions and connections").
f Remove the sealing cap from the DHW circulation connection
(see chapter "Specification / Dimensions and connections").
f Connect the DHW circulation line.
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10.4 Filling the system

Heating circuit water quality
Carry out a fill water analysis before filling the system. This analy-
sis may, for example, be requested from the relevant water supply
utility.
1
To avoid damage as a result of scaling, it may be necessary to
soften or desalinate the fill water. The fill water limits specified
2
in chapter "Specification / Data table" must always be observed.
f Recheck these limits 8-12 weeks after commissioning and
during the annual system service.
Note
With a conductivity >1000 μS/cm, desalination treatment
is recommended in order to avoid corrosion.
Note
If you treat the fill water with inhibitors or additives, the
same limits apply as for desalination.
Note
Suitable appliances for water softening, as well as for
filling and flushing heating systems, can be obtained via
trade suppliers.
Material losses
!
Never switch on the power before filling the system.
10.4.1 Flushing out the hot water system
Before turning on the water supply, open all taps. Allow the sys-
tem to fill and flush out all flux and debris from the installation.
10.4.2 Filling the heating system
f Fill the heating system via the drain valve.
f Vent the pipework.
HSBC 300 cool | 15