hajdu ZV80Erp Aufbau- Und Betriebsanleitung Seite 20

• Putting the storage tank under greater pressure than
0.6 MPa is dangerous and forbidden. If the network
pressure exceeds 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
protective earth.
• The storage tank may only be connected to the
electricity supply with a permanent connector. It is
forbidden to use a wall plug.
• Mains network electricity may only be connected to the
storage tank through a double-pole switch where the
distance between the open contacts is at least 3 mm.
This separation device must be built in to the fixed
power supply network.
• If the mains network connecting cabling is damaged in
any way, in order to rule out danger it may be replaced
EN
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