hajdu Z30ErP Aufbau- Und Betriebsanleitung Seite 18

Z30ErP • Z50ErP • Z80ErP • Z100ErP • Z120ErP • Z150ErP • Z200ErP
• It is recommended to drain the appliance inasmuch as it is
not in use in a place subject to freezing temperatures. This
operation must be carried out by a qualified expert.
• Running hot water above a temperature of 50 °C can cause
serious burns .
• Non-compliant commissioning can result in injury to persons
and animals, furthermore, it can cause material damage . The
manufacturer bears no liability whatsoever for these.
• The storage tank must be filled with water before turning on
the heating .
• It is forbidden to connect the appliance using a hose. Steel
piping, copper piping, plastic or flexible pipe joints with heat
resistance of minimum 100 °C, suitable for nominal water
network pressure of 0.6 MPa, can be used for both hot and
cold water supplies. Insulating intermediates must be used
for connecting copper water supply piping to the network.
• Putting the storage tank under greater pressure than 0.6
MPa is dangerous and forbidden. If the network pressure ex-
ceeds 0.6 MPa even intermittently, a pressure reducing valve
must be installed before the hot water storage tank.
• It is forbidden to install a water supply assembly between the
safety valve and the appliance. The valve drain joint must be
pointing downwards so water can drip from the overflow pipe
of the pressure relief device. This pipe must be left open to
the air. The drain pipe must be positioned to a frost-free area,
away from the appliance, and it must be left open to the air.
The hidden positioning of water dripping is forbidden.
• The pressure reduction valve and safety valve may only be
installed and operated in a frost-free environment.
• It is forbidden to operate the water heater without a protec-
tive earth.
• The storage tank may only be connected to the electricity
supply with a permanent connector. It is forbidden to use a
wall plug.
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