(C) IDM ENERGIESYSTEME GMBH
Installation instructions TERRA SWM
25
installing the electrics
Wä
rm
e
q
uel
le
5. Electrical assembly
5.1. Power supply
The electrical power supply must be made by a quali-
fi
ed person and must be registered by the local elec-
tricity company. The executive electrical company, is
responsible for the standard-compliant connection
to the electrical installation and the applied safety
measure. Before commissioning all clamps must be
controlled and if necessary they must be retighten.
For electrical details please see the relevant wiring
diagram.
The main supply voltage at the terminals of the heat
pump must be 400 V ± 10%. The dimensions of the
connecting cables must be checked by the executive
electrical company.
A fault-current circuit breaker for the heat pump is not
required. The connection to the protective measure
„protective multiple earthing“ is suf
fi
cient. If never-
theless the protective measure „fault-current circuit
breakers“, dispatched by the executive electric com-
pany, a separate fault-current circuit breaker for the
heat pump is recommended. This must be designed
as an all current sensitive Type B (I
Δ
N
≥
30mA). The
speci
fi
ed FI-types related to the heat pump excluding
externally connected components (see Installation
instructions, data sheets).
For the main current circuit as a result of the occur-
ring starting currents, circuit breakers with a tripping
characteristic curve type „C“ or „K“ must be used.
For the control circuit and the optional electric auxilia-
ry heater, circuit breakers with a tripping characteristic
type „B“ or „Z“ are suf
fi
cient.
The electrical connection- and supply cables must be
designed as copper cables.
5.2. EMC compatibility
For the TERRA SWM, separate cable entries for the
main power supply and for the sensors have been
designed to avoid problems in the
fi
eld of
E
lectro-
M
agnetic
C
ompatibility.
It is especially in the area of responsibility of the elec-
trical company to avoid possible coupling paths when
creating the electrical installation.
EMC-faults can have different effects:
- Short-term measurement faults
- Permanent measurement faults
- Short-term interruption in data connections
- Permanent interruption in data connections
- Data losses
- Damage to equipment
3N~400 V / 50 Hz
230V / 50 Hz
3N~400 V / 50 Hz
1~230 V / 50 Hz
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Main power supply
Control current
Control of the
groundwater pump
Recommendation:
Install
matching Motor protection
switch
or
When working on the heat pump, please
be sure that the device is tensionless.
