Wolf CGB-2 Series, Installation Instructions For Contractors

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26. Filling of optional appliance
versions
Optional boiler versions (subject to country-specific versions):
Two versions are available equipped with heating system filling facility.
Fig: Filling facility integrated in the appliance on delivery
Hydraulic separator CA Hand wheel
Fig: Filling facility that can be integrated into the appliance as a
retrofit kit
Applicable standards for the filling facility:
(DIN) EN 1717 Protection against pollution of potable water installations
(DIN) EN 14367 Non controllable backflow preventer - Family C, type A
DIN 1988-100 (for Germany) Codes of practice for drinking water installations
Also observe the country-specific standards and guidelines on installation and operation.
Installation and operating information:
The filling facility contains a hydraulic separator CA (class b) to DIN EN 14367.
According to DIN EN 1717, hydraulic separators of type CA are approved for liquids up to and including
hazard category 3 (e.g. heating water without inhibitors).
For Germany and Austria, only drinking water may be used for the (initial) filling of the heating system using the filling
facility. An (initial) filling with treated water (deionised water, etc.) corresponds to a higher hazard category, for which
the CA hydraulic separator may not be used.
To ensure long-term and fault-free operation of the filling facility, we recommend using a dirt trap (fine filter) in the
DHW installation.
Operation:
For the filling procedure, open the hand wheel and fill to about 2 bar system pressure (observe pressure indication
on pressure gauge or display module). After filling, close the hand wheel.
Hydraulic separator CA
Hand wheel
Maintenance:
The filling facility with CA hydraulic separator does not require any maintenance.
If there is water leaking from the CA hydraulic separator outlet, correct function can no longer be guaranteed and the
CA hydraulic separator should be replaced.