58
General information on power supply
Isolators for non-earthed conductors
■ The main isolator (if installed) must
simultaneously isolate all non-earthed
conductors from the mains 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
main isolator is installed, all non-
earthed cables must be isolated from
the mains by the upstream breaker
with at least 3 mm contact separation.
Danger
Incorrectly executed electrical
installations can lead to injury
from electrical current and result
in equipment damage.
Make the power supply connec-
tion and implement all earthing
measures (e.g. RCD circuit) in
accordance with the following
regulations:
■ IEC 60364-4-41
■ VDE requirements
■ Requirements specified by
your local power supply utility
■ Protect the power supply to the
heat pump control unit with
16 A max.
Danger
The absence of component
earthing in the system can lead to
serious injury from electrical cur-
rent if an electrical fault occurs.
The equipment and the pipework
must be connected to the earth
bonding of the house in ques-
tion.
Danger
Incorrect core termination can
cause severe injuries and dam-
age to the equipment.
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.
■ 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 within any
24 h period.
Installation sequence
Power supply
5724 152 GB
Summary of Contents for AWS 104
Page 5: ...5 Certificates Declaration of conformity 119 Keyword index 120 Index Index cont 5724 152 GB...
Page 87: ...87 Opening programming unit 3 2 1 2x Troubleshooting Repairs cont 5724 152 GB Service...
Page 89: ...89 Removing separating plate 1 2 Troubleshooting Repairs cont 5724 152 GB Service...
