Electrical Connections - Emerson Liebert CRV User Manual

Electrical Connections

6.0 E
LECTRICAL
6.1 Electrical connections
h
g
Low voltage signal entry port (g)
Power supply entry port (h)
g
1) Before proceeding with the electrical connections, ensure that:
S all electrical components are undamaged;
S all terminal screws are tight;
S the supply voltage and frequency are as indicated on the unit.
2) Power supply cable connections:
S Connect the cable to the Line inlet terminal board.
S Use the cable size defined according to the flow, the supply voltage and the installation
type.
S The system/line cable protection is to be arranged by the customer.
Use a protection with differential switch. If the system is equipped with EC fans, use a
B type switch.
S Do not fit the supply cable in the raceways inside the machine electric board.
S Use multipolar cables with sheath (CEI20-22) only.
3) Wiring connections:
S Connections for remote on-off must be done by the installer.
S The General Alarm terminals allow remote alarm signalling.
4) In case of short circuit, check the sticking of the involved switch and possibly replace it.
5) During start-up and maintenance it is possible to connect a remote display on the rear side
of the unit. Inside the compressor / chilled water valve compartment there are available two
cables (supply and Ethernet) for connecting, so to manage all the parameter like front i-Com
display. For part numbers and specification refer to wiring diagram.
See electrical data in Appendix B: Technical data tables.
C
ONNECTIONS
h
Routing cables from the floor.
Use cable ties to fix high and low voltage wires
to plastic clamps
Routing cables from the top.
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Electrical Connections