Electrical Connection - GEA RedGenium Operating Instruction

Start-up
Basic and further steps
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7.4.1.3 Electrical connection

The heat pump has been designed for plug-in and reliable automatic operation.
All connections must be carried out according to the current installation regula-
tions.
All connections to the heat pump must be flexible and free of loads.
Dimensioning of the inlet pipe cross-sections must be according to DIN
VDE 100 Part 520.
Before starting work, make sure that all parts to be connected are de-energised,
e.g. by removing the main fuse in all phases or installing a jumper wire. The insu-
lation resistance of the electrical tools and fixtures and wiring is to be checked.
The connection may only be undertaken if this value lies in the permissible range.
Connections and almost all external connections are pre-wired at the factory.
The electrical consumers and sensor must be connected according to the circuit
diagram. All electrical connections must be made according to the circuit dia-
gram, e.g.
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Some external components, such as the second EMERGENCY STOP switch, the
ammonia sensor and the fans of the machine room, must be connected by the
system erector on site.
Check that terminal screws (in the switching cabinet) are tight.
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Water treatment
Industrial water usually contains dissolved or solid matter that causes corro-
sion or dirt layers to develop or encourages the growth of algae. The water for
the condenser and evaporator circuits should be treated chemically to mini-
mise such undesirable effects. In order to avoid increasing maintenance costs
as a consequence of additional applications for removing dirt layers or
exchanging corroded components, a water treatment specialist should be
consulted.
Danger
Contact with live components is prohibited.
► Produce the earth connection according to the designation in the general
assembly drawing. See chapter "Designation of the earthing connection".
Compressor drive motor
Compressor control supply
Oil heater
Notice
Only loosely supplied parts must be installed (sensors for heating agent and
for heat carriers).
► The connection of electrical drives/fittings provided by the customer is
the customer's responsibility.
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19.12.2019