Viessmann BW 351.A07, Инструкции по установке и обслуживанию для подрядчиков

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Isolators for non-earthed conductors
■ The mains isolator (if installed) must
simultaneously isolate from the mains
all non-earthed conductors with a min-
imum contact separation of 3 mm.
■ We additionally recommend installing
an AC/DC-sensitive RCD (RCD class
B
) for DC (fault) currents that
can occur with energy efficient equip-
ment.
■ If no mains isolator is installed, all non-
earthed conductors must be isolated
from the power supply by the upstream
circuit breaker with a minimum contact
separation of 3 mm.
Danger
Incorrectly executed electrical
installations can result in injuries
from electrical current and in
appliance damage.
Connect the power supply and
implement all safety measures
(e.g. RCD circuit) in accordance
with the following regulations:
■ IEC 60364-4-41
■ VDE regulations
■ Technical connection require-
ments specified by the local
power supply utility
■ Protect the power supply to the
heat pump control unit with an
MCB/ fuse of max. 16 A.
Danger
If system components are not
earthed, serious injury from elec-
tric current can result if an elec-
trical fault occurs.
Connect the appliance and pipe-
work to the equipotential bonding
of the building in question.
Danger
Incorrect core allocation can
result in serious injury and dam-
age to the appliance.
Never interchange cores "L" and
"N".
■ In negotiations with your power supply
utility, different supply tariffs for the
main power circuits may be offered.
Observe the technical connection
requirements of the power supply util-
ity.
■ If the compressor and/or instantane-
ous heating water heater (if installed)
are operated at an economy tariff
(power-OFF), provide an additional
cable (e.g. 3 x 1.5 mm
2 ) for the power-
OFF signal from the distribution board
(meter box) to the heat pump control
unit.
or
Combine the cable for the power-OFF
signal and for the heat pump control
unit power supply (3 x 1.5 mm
2 ) in a
5-core cable.
■ The allocation of the power-OFF (for
compressor and/or instantaneous
heating water heater) is made via the
type of connection and by setting
parameters in the heat pump control
unit.
In Germany, the power supply can be
cut off for up to 3 x 2 hours per day
(24 h).
Installation sequence
Power supply
5546 273 GB
Installation