ELWA
®
Assembly- and Operation Manual, 170504
2
Intended Use
The electric hot water device ELWA is designed to be used with photovoltaic arrays up to
2.5 kWp nominal power.
ELWA should be mounted on conventional hot water tanks or storage tanks with a minimum
capacity of about 150 litres.
The device does not feed any power to the grid. A permission of the grid operator or the utility
is NOT required.
Any use different from that described above may lead to damage and can even cause short
circuits, electric shocks or fire. Safety instructions of this manual must be followed strictly!
The device fulfils national and European regulations. Company and product name are
trademarks of my-PV GmbH. All rights reserved.
Scope of Supply
Photovoltaic Water Heater ELWA
O-Ring-Seal
1 set MC4 Connectors
Assembly- and Operation Manual
Safety Instructions
Always comply with local regulations for mounting and connection.
Any damage caused by ignoring the installation and user manual is not covered by the
manufacturer´s warranty.
Permanent equipotential bonding of the device and the storage tank is mandatory.
Never switch on the device if the heating rod is not fully immersed.
The device is intended for use in a dry environment, the enclosure must not get wet or moist.
Danger of electric shock!
Never use the device where ammonia is present.
Never use the device in a dusty environment.
Never cover the ventilation holes of the enclosure.
Always mind the mounting position: heating rod horizontal, power cord bottom
Avoid high (>40°C) and low (<5°C) ambient temperatures during storage and operation of the
device. Avoid direct sunlight.
Never exceed the maximum DC input voltage (360V).
The thermal fuse blows at 98 +/-3°C and deactivates the device permanently.
AC supply must be fused 10 to 16A.
In commercial facilities electrical installations have to comply with all local regulations.
