1 Safety
32 Installation instructions electronicVED 0020288451_00
1.2.3 Risk of death from
electric shock
There is a risk of death from
electric shock if you touch live
components.
Before commencing work on
the product:
▶ Disconnect the product from
the power supply by switch-
ing off all power supplies
at all poles (electrical parti-
tion with a contact gap of at
least 3 mm, e.g. fuse or circuit
breaker).
▶ Secure against being
switched back on again.
▶ Check that there is no
voltage.
1.2.4 Risk of death from
electric shock from live
lines and connections
The potable water that is used
must demonstrate a specific
resistance of ≥ 900 Ω cm at
15 °C. Otherwise, the product
must not be used.
▶ Before installing the unit, ask
your water company to inform
you about the water resist-
ance and conductivity.
1.2.5 Risk of death due
to incorrect electrical
installation
▶ The product must be con-
nected to the protective con-
ductor.
▶ The product must be perman-
ently connected to fixed wir-
ing.
1.2.6 Risk of scalding caused
by hot water
If a solar thermal energy install-
ation is connected upstream,
hot water temperatures of over
42 °C could be generated even
if the scald protection function is
set.
If a solar thermal energy system
is connected upstream of the
product, the inlet temperature
must be limited by including
precautionary features in the
design (e.g. a mixing valve).
Condition: VED 18 - 24/8
▶ Install a mixing valve to limit
the inlet temperature to 55 °C.
Condition: VED 27/8
▶ Install a mixing valve to limit
the inlet temperature to 25 °C.
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