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Installation – for qualified contractors
INSTALLATION
7. Safety
7.1 Instructions and regulations
◦
All steps until the commissioning is completed as
well as the maintenance of this appliance must only
be carried out by a qualified contractor in accord
-
ance with these instructions.
◦
Perfect function and safe operation can only be
assured when using original accessories and spare
parts intended for this equipment.
◦
Observe all locally applicable instructions and regu-
lations regarding water and electrical connections.
◦
Observe all regulations of your local water and elec-
tricity supply utilities.
◦ The specific electrical resistance of the water used
must not fall below that stated on the type plate. In a
linked water network, observe the lowest electrical
water resistance (see chapter “Application areas”).
Your water supply utility will advise you of the specif-
ic electrical water resistance or conductivity.
◦
Install the appliance only in an enclosed room free
from the risk of frost. Store the dismantled appliance
in a room free from the risk of frost, as water resi-
dues remain inside the appliance.
◦
The protection IP 25 (hoseproof) can only be en-
sured with a correctly fitted cable grommet.
7.2 Water installation
◦
Cold water line
Permissible materials: Galvanised steel pipe, stain-
less steel pipe, copper pipe or plastic pipe.
◦
DHW line
Permissible materials: Stainless steel pipe, copper
pipe or plastic pipe.
◦
Operating temperatures can reach up to 60 °C. In
case of faults, loads up to 95 °C / 1.2 MPa can occur
temporarily in the installation. Any plastic pipework
used must be suitable for these conditions.
◦
A safety valve in the hot water pipe is not
permissible.
◦
Never use taps/valves for open vented equipment.
◦
If you are using thermostatic valves, observe chapter
Recommended settings.
The appliance is suitable for preheated water up to
60 °C.
The maximum permissible supply temperature is
60 °C. The appliance can be damaged by higher
temperatures. With the “central thermostat” (see
chapter “Special accessories”), the maximum sup-
ply temperature can be limited to 60 °C.
7.3 Electrical installation
◦
The power supply must be connected permanently.
◦
The appliance must be able to be separated from
the mains power supply, for example by fuses that
disconnect all poles with at least 3 mm contact
separation.
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