Metal-Fach SD DUO BIO 16, Техническая и эксплуатационная документация, Страница: 30 / 68

METAL-FACH Heating Technology
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VST 112 valve
The emergency extinguishing device, which prevents ignition of the fuel in the storage tank, can also be
connected to the water supply system and if the set temperature is exceeded, the extinguishing device opens
the water valve and operates independently of the electrical supply.
Thanks to the appropriate construction of boilers of the SD DUO BIO series the danger of fire entering the fuel
hopper is small, which is counteracted by the tight construction of the fuel feeder / protected by an end stop.
NOTE!
The gas pressure in the expansion vessel should be checked and adjusted before using
the boiler. The expansion vessel should be checked once a year.
NOTE!
The safety valve should be installed at or close to the heat source, e.g. on the system feed
pipe, in an easily accessible location.
NOTE!
The safety valve shall prevent the maximum operating pressure from being exceeded by
more than 10%.