Vertiv I Liebert Air Cooled Condenser I User Manual 11
1. It is recommended to use the 20AWG (0.52mm2) cable as the condenser
start/stop signal cable.
2. The (outdoor) air cooled condenser requires a three-phase, neutral and earth
power supply. The indoor unit is the recommended point of connection for this
electrical service and includes a three-pole circuit breaker rated at 16 amps.
3. The cables should not contact hot objects, such as the copper pipe and water
pipe without insulation, to avoid damaging the insulation layers.
4. The cables should be connected in accordance with the local regulations.
2. Connect the cables
Refer Figure 2-5, Figure 2-6 and C
ircuit Diagram for the connections of external power cables.
Figure 2-5 Connection figure of single fan external power cables (taking LDF42 for example)
Figure 2-6 Connection figure of double fans external power cables (taking LDF62 for example)
1. The external power cables enter the electrical control box through the
waterproof joint of external power cable whose inner diameter is Φ10mm.
2. The compressor signal cables enter the electrical control box through the
waterproof joint of external power cable whose inner diameter is Φ6mm.
3. After connecting the external power cables, apply waterproof sealant treatment
to ensure the good waterproof performance of electrical control box.
Waterproof joint of Compressor signal
Waterproof joint of external power
cables by others
Accessing terminal of
external power
supply (single fan)
Fan speed controller board
Fan speed controller board
Accessing terminal of
external power
supply (double fan)
Waterproof joint of
Compressor signal
Waterproof joint of
external power
cables by others
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