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Vertiv Liebert DM Series User Manual

Vertiv Liebert DM Series
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Vertiv | Liebert® DM | User Manual 83
Outdoor Fan Speed Controller (Only for 22 kW/27 kW)
Chapter 6: Outdoor Fan Speed Controller (Only for 22 kW/27 kW)
This chapter briefly introduces the use of the fan speed controller from an end-user perspective. The detail includes the
definition of the cabling terminals of the fan speed controller and the introduction of the human-machine interface &
operation instructions. The content of this chapter helps in the maintenance of the unit.
The number of fan configured in the unit must be same as the actual number of fans. Otherwise, false
alarms may occur. For details, refer Section 6.3.2.
Only qualified service and maintenance personnel can perform system operation and maintenance.
6.1. Cabling of the Terminals
The cabling terminals are located on the fan speed controller board, refer Figure 3-2. The distribution is shown in Figure 6-1,
and refer Table 6-1 for details. For the specific wiring method of the wiring terminal, please refer to Appendix 2 Outdoor unit
circuit diagram.
Figure 6-1 Distribution of Terminals

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Vertiv Liebert DM Series Specifications

General IconGeneral
BrandVertiv
ModelLiebert DM Series
CategoryAir Conditioner
LanguageEnglish

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