Water Supply Network Connection; Electrical Mains Connection - Hyundai H-SWE1-30V-UI065 Instruction Manual

10.

Water supply network connection

The water heater is connected to the cold water supply network with operating pressure from
0.1 MPa to 0.7 MPa. If water pressure in the water supply network exceeds 0.75 MPa, install a
reduction valve (pressure reducer) in the feed system so that operating pressure does not exceed
0.75 MPa.
If water hardness in the water supply main exceeds 450 mg/l (CaCO3), we recommend you to use
a separate water filter upstream of the water heater inlet to extend service life of the heating
element.
For connection to the water supply network, the water heater has inlet and outlet connectors,
which are marked with indication labels and provided with male thread 12 mm in diameter
(G1/2").
Install the combined check valve / pressure safety valve provided in the package onto the cold
water inlet connection marked with blue color. Connect a drain tube to the pressure relief port of
the pressure safety valve for water drainage to the sewers (possible upon heating).
To facilitate maintenance of the water heater, we recommend you to install a drain valve and a
EN
tee between the cold water inlet connection and pressure safety valve. This tee will help you to
faster drain water from the water heater. For your convenience, we recommend you to connect
a water drain hose to the shutoff valve of the tee. This hose will allow you to route water drained
from the water heater to the sewers or another selected destination. Connect the desired
quantity of consumption points to the hot water outlet connection marked with red color. Open
the cold water feed valve and one of the demountable valves in order to pass water flow through
the water heater and make sure that it is operable. After the tank has been filled as indicated
by water flowing from the demountable valve, close it, check tightness of all connections, and
retighten them as necessary.
1 - Inlet connection
2 - Outlet connection
3 - Tee*
4 - Shutoff valve*
5 - Pressure safety valve
6 - Drain tube*
7 - Cold water inlet shutoff valve*
8 - Drain hose*
* not included to the package.

Electrical mains connection

The power cord of the water heater has a plug with a grounding contact. The water heater shall
be used with the properly grounded mains socket. If the socket planned for use is not properly
grounded or protected with a time-delay fuse / circuit breaker, please contact a qualified electri-
cian for replacement of the socket.
CAUTION!
Never operate the water heater without the installed check
valve / pressure safety valve.
Electrical instant water heater
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