Vertiv Liebert AHU - Connecting Control Cables

Vertiv™ | Liebert® AHU | User Manual 27
No. Description No. Description
1 Cable clamp 2 ATS
3 Power meter insurance 4 EPO contactor
5 Current transformer 6 Power meter
7 Dierential pressure transmitter 8 ATS-C1000 controller
9 Terminal block 10 RJ45
11 Main breaker 12 Fan breaker
13 Cocontactor 14 Power module
15 Transformer 16 Ultracap
17 Terminal block 18 icom Controller
19 Fuse board 20 Water leak detector
21 Relay 22 Transformer breaker
Figure 2-22 Electrical Control Box
Connects terminals L1 ~ L3, N, and PE respectively to their counterparts of external power supply. Reserve some redundancy
of the incoming cable and fix the cable to the cable clamp located on the inner side panel of the unit. The types of wiring
cables are of copper conductor, and the cross-section-area requirements of the copper wires can vary with the dierent
models. For the cable specification, refer the rated Full Load Ampere (FLA) in the Table 2-6. A breaking device must be
provided to be disconnected from the power supply, Over-current/ Ground fault protection device is recommended to use the
air switch with the feature of D-release.
Note: The cable sizes should meet the local wiring regulations.
The cross-sectional area of the main grounding cable should be greater than 10 mm2 (copper) or 16 mm2 (aluminum).
Table 2-6 Rated Full Load Ampere (FLA)
Unit Type Standard Models Cross- Section- Area of Copper Wire
mm2
FA065HC1NE09020F1070P0000 22.8 10
FA065HC1NE09020M1070P0000 22.8 10
2.4.3. Connecting Control Cables
The view of the terminal row is shown in Figure 2-23.
No. Description No. Description
1 89/90 is the feedback interface of air damper 3 93/94 is the RS485 interface of ATS
2 91/92 is the feedback interface of the EPO
Figure 2-23 View of Terminal Block/Row