Vertiv | Liebert® CRV4 | User Manual 40
Electrical Installation
8. For the air conditioner congured with EC fans, the unit power grid adheres to the TN or TT star connection
power distribution system. However, if there is a need to congure another type of power grid, contact the
Vertiv representative for the same.
9. An appropriate all pole disconnection device must be supplied.
10. For SCCR of the Liebert® CRV4 air-cooled unit: observe the name-plate.
11. The power soft cable should not be lighter than an ordinary PVC-sheathed cable, which is 53 line according
to GB5023.1 (idt IEC60277).
12. For appliance of outdoor: the power cable should not be lighter than Chloroprene rubber sheathed exible
cord, which is 57 line according to IEC 60245.
4.2. Liebert CRV4 Cable Connection of Indoor Unit
4.2.1. Electrical Port Location of the Indoor Unit
For any model in the Liebert CRV4 series, open the rear panel of the indoor unit following which the specic
layout and locations of the low voltage components can be viewed as shown in Figure 4-1. For detailed layout
information on low voltage components, refer to the labels on the cabinets and units.
No. Description No. Description
1 Rear door 3 Main circuit breaker (MCB)
2 Connect to control cable
Figure 4-1 Cable Connection of the Electrical Control Box and the Terminals
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