Chapter 4 Electrical Installation; Installation Notes; Wiring Of Indoor Unit; Locating Electrical Ports Of Indoor Unit - Liebert PEX+ Series User Manual

Start electrical installation after mechanical installation is done. This chapter introduces the electrical installation of the Start electrical installation after mechanical installation is
Liebert.PEX+ AC, including installation notes,

4.1 Installation Notes

1. The connection of all power cables, control cables and ground cables should comply with the local and national The connection of all power cables, control cables and ground cables should comply with the local and national The connection of all power cables, control cables and ground cables should comply with the local and national
electrician regulations.
2. The electrical installation and maintenance must be performed by authorized professional installation The electrical installation and maintenance must be performed by authorized professional installation The electrical installation and maintenance must be performed by authorized professional installation personnel.
3. See the unit nameplate for the full load current. See the unit nameplate for the full load current. The cable sizes should meet the local wiring rules.
4. Mains supply requirement: 380Vac ( Mains supply requirement: 380Vac (-10% to +15%), 50Hz, 3N~
5. If the soft power cable uses Y If the soft power cable uses Y-connection, and if the cable is damaged, it must be replaced by professional service
personnel.
6. Before the wiring, use a voltmeter to measure the power supply voltage and make sure that the power supply has Before the wiring, use a voltmeter to measure the power supply voltage and make sure that the power supply has Before the wiring, use a voltmeter to measure the power supply voltage and make sure that the power supply has
been switched off.
7. The applicable grid for this air conditioner: TN, TT star connection power system; he applicable grid for this air conditioner: TN, TT star connection power system; consult Emerson for other
connections.
8. A breaking device shall be provided to be disconnected from power supply. A breaking device shall be provided to be disconnected from power supply.

4.2 Wiring Of Indoor Unit

Wiring Of Indoor Unit

4.2.1 Locating Electrical Ports Of Indoor Unit

The locations of the low voltage devices are visible after the front door of the electrical control The locations of the low voltage devices are visible after the front door of the electrical control box of the indoor unit is The locations of the low voltage devices are visible after the front door of the electrical control
opened, as shown in Figure 4-1
differentiated according to the labels. differentiated according to the labels.

4.2.2 Connecting Power Cable Of Indoor Unit

Connecting Power Cable Of Indoor Unit
The power connectors are located as shown in
Figure 4-2, connect terminals L1 ~ L3, N, and PE respectively to their counterparts of external power supply.
some redundancy of the incoming cable and fix the cable to the cable clamp located on the inner side panel of the unit, some redundancy of the incoming cable and fix the cable to the cable clamp
see Figure 4-1. For the cable specification, see the rated full load ampere (FLA) listed in Table For the cable specification, see the rated full load ampere (FLA) listed in Table 4-1. For the cable specification, see the rated full load ampere (FLA) listed in Table

Chapter 4 Electrical Installation

Chapter 4
, including installation notes, and the wiring of indoor unit, and condenser power cables.
Of Indoor Unit
1.The distribution information of the detailed low voltage components shall be tribution information of the detailed low voltage components shall be
Figure 4-1 Electrical control box
s are located as shown in Figure 4-1. The enlarged view of power connector
terminals L1 ~ L3, N, and PE respectively to their counterparts of external power supply. Reserve terminals L1 ~ L3, N, and PE respectively to their counterparts of external power supply.
Liebert. PEX+Series Precision Air Conditioner Liebert. PEX+Series Precision Air Conditioner
chapter introduces the electrical installation of the
wiring of indoor unit, and condenser power cables.
The cable sizes should meet the local wiring rules.
User Manual User Manual
Chapter 4 Electrical Installation Chapter 4
replaced by professional service
consult Emerson for other
power connector is as shown in
located on the inner side panel of the unit,
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