Austria Email VT-N 1000-FFM Gebruiksaanwijzing en montagehandleiding - Pagina 6
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Performance: operator, plumber
Time interval: every 6 months
Maintenance and repairs:
If no penetration of water occurs during heating of the water heater or in the event of a permanent leak of
the safety valve, an attempt must be made to loosen the valve by repeated operation of the airing facility
or to 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.
Performance: operator
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 sto-
rage 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. In order to avoid dama-
ges to the hot water tank from overpressure, it is absolutely necessary to replace any furred safety val-
ves. 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.
5. Circuit Connection and Screw-mounted Heating
A circuit connection must be avoided as far as possible due to significant losses of energy. If a complex
service water network makes a circulation line necessary, then this must be insulated well and the cir-
culation pump be controlled using a timer. Multi-purpose free-standing tanks are provided with a circuit
connecting pipe with an external thread. Equally, a 6/4" coupling sleeve is installed, which may be used
for the installation of an electric screw-mounted heater serving as a supplementary or reheating unit
(see also paragraph 7).
6. Flange Ports
Depending on the system design, electric built-in heating units or heat exchangers may be installed to
the boiler flange ø240 (diameter inside ø175 mm, hole circle ø210 mm, 12 x M 12) (see also paragraph
7).
Electric built-in heating units must be installed in such a way that the temperature control sensor is loca-
ted at the top.
7. Important Assembly Instruction
All metallic plug-in (built-in) components with larger metallic surfaces (e.g. capacitor of plug-in heat
pumps, finned tube exchangers, electric heating units) must be installed in such a way that they are
insulated electrically from the tank.
In order to protect the aforementioned plug-in (built-in) components against corrosions from leaking
currents, we recommend that a defined transition resistance of approx. 600 Ω (unless already installed
in the components by the manufacturer) be provided.
Id.Nr.: 233754-4
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