Connection To The Electrical Network - hajdu SMART-Serie Aufbau- Und Betriebsanleitung

5.3. If the water pressure in the pipeline exceeds 0.6 MPa, even on a temporary basis,
a pressure reduction valve has to be mounted in front of the hotwater tank. This
must be purchased and installed by the customer. The pressure reduction valve
is inserted in front of the combined safety valve. (Fig. 3, page 115)
5.4.
Any number of taps and mixing faucets can be mounted on the hot water con-
tainer. You can prevent the back­flow of hot water via the taps by mounting a
one­way valve in front of the water network. (Not included with the product.)
5.5. A closing valve needs to be mounted in the water pipeline in front of the safety
valve and pressure reduction valve, in order to enable the disconnection of the
appliance from the water network for the purposes of maintenance. (see p. 115)
5.6. If the user may be exposed to hot water during the withdrawal of water, we
recommend to implement a hydraulic connection with hot water protection.
(Figure 3, page 115)

6. CONNECTION TO THE ELECTRICAL NETWORK

6.1.
The connection of the container to the electrical network must be of a permanent
design. Wall sockets may not be used.
6.2. Cable connection must be implemented from the water heater to the isola-
tion switch, which must be incorporated in the fixed wire network. The overcur-
rent protection of the isolation switch must be ensured using a miniature circuit
breaker.
6.3. The current of the electric system has to be connected to the container through
a two­pole switch (disconnecting all poles) ensuring full disconnection in an envi-
ronment of overvoltage category III. (At least 3 mm separation distance must be
ensured between open poles.)
6.4.
Mains connection cable cross section required: min. 1.5 mm
formance indicated on the plate. Cable types suitable for connecting to the mains:
Adequate type (alternative type):
• HØ5 VV­F
• HØ5 RR­F
Connection with wire protection tube is not allowed
6.5. The internal circuit diagram of the hot water container is shown on Figure 2, page
114. the wiring must be connected to screw terminals of the temperature reg-
ulator (and limiter). After connection, the mains supply lead must be protected
against pulling by tightening the wire clamp at the inlet. The mains supply lead
must be inserted between the two clamp halves, and then, they must be fixed to
the bottom of the shell using fastening screws .
6.6.
Contact protection rating of the appliance: I.
The cover (bottom plate) of electrical assemblies provides adequate protectiona-
(HØ5 VV­K)
(HØ5 RR­K)
, subject to the per-
2
3 2 5
EN