7
Electrical connections
Danger
Electromagnetic radiation near
the wiring chamber of the heat
pump control unit can interfere
particularly with heart pacemak-
ers and defibrillators.
■ Wearers of heart pacemakers:
Avoid the immediate vicinity of
the room where the heat pump
control unit is connected; pos-
sibly consult your physician.
■ Store and use defibrillators out-
side the area at risk.
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
Danger
Touching 'live' components car-
ries a risk to life. Some compo-
nents on the PCBs will remain
'live' even after the power supply
has been switched off.
■ Isolate the system from its
power supply (e.g. at a sepa-
rate MCB/fuse or mains isola-
tor), check that there are no
more 'live' currents and safe-
guard against reconnection.
Note
In addition to the control circuit,
there may be several load cir-
cuits protected by separate
MCB/fuses in the domestic dis-
tribution board.
■ Prior to removing the heat
pump covers, wait at
least 4
min
until the voltage has com-
pletely dropped out.
■ Never touch terminals in the
heat pump control unit and
power connections; see
page 47.
Danger
The absence of component
earthing can result in life-threat-
ening injuries from electrical cur-
rent and in component damage in
the event of an electrical fault.
■ Remake all earth connections
inside the heat pump.
■ Heat pump and pipework must
be grounded to the equipoten-
tial bonding of the building.
Safety and liability
Occupational safety
5848 449 GB
Installation
