Austria Email SISS 500 Bedienungs- Und Montageanleitung Seite 20

openings of the safety valves (domestic water and heating circuits) must open out into an appropriate drainage
object in order to avoid any damage caused by the escape of operating fluid.
Basically, all the regulations of ÖNORM B 2531, DIN 1988 (EN 806), DIN 1717, VDI 2035 or the corresponding nati-
onal regulations and laws must also be observed.
After completed plumbing and bubble-free filling of the storage tank, the connector fitting must be checked for
functionality.
a) In order to avoid a blockage of the airing facility of the safety valve due to furring, the airing facility of the safety
valve must be operated from time to time during operation of the system. It must be observed whether the
valve closes again after releasing the airing facility and whether the water in place runs off completely through
the funnel or the blow-off pipe.
b) In the case of safety valves that are installed ahead of water heaters, it must be observed whether the safety
valve responds during heating of the water heater. This is identifiable by the penetration of water out of the
blow-off pipe.
Implementation: operator, plumber
Time interval: yearly
Maintenance and repairs:
If no penetration of water occurs during heating of the water heater or in the case of a constant leak of the safety
valve, an attempt must be made to loosen the valve by repeated operation of the airing facility or rinse out any
possible foreign object (e.g. fur particle) on the seal component.
If this cannot be achieved, then the appropriate repair by a plumber must be initiated. The complete safety valve
must be replaced in the case of any damages to the valve seat or sealing ring.
Implementation: plumber
Time interval: yearly
To test the non-return valve, the shutoff valve is closed and no water must run out of the opened test valve.
The storage tank is operated by the hot water valve of the service fitting (mixer tap). Therefore, the storage tank
is constantly under line pressure. In order to protect the internal boiler from overpressure during heating, the
appearing expansion water is discharged through the safety valve. The non-return valve prevents the hot water
from flowing back into the cold water supply network in the case of a loss of line pressure, and thus protects the
boiler from heating up without water. By means of the shutoff valve, the storage tank can be separated in relation
to water and thus also from the cold water supply network, and emptied through the drain valve, if required.
This tank can be used by children eight years old and older as well as by persons with reduced physical, sensory
or mental capabilities or who lack experience and knowledge if they are supervised or if they have been trained
with regard to the safe use of the tank and understand the resulting risks. Children may not play with the tank or
its packaging. Cleaning and user maintenance may not be performed by children without supervision.
Id.Nr.: 236921-17
20