Inspection and Installation

Figure 20 Electrical field connections for VFD control condensers

Factory-installed fuse block on 60Hz units. Circuit breaker supplied in lieu of fuse block on 50Hz units.

Factory-wired to 24V control circuit.

Control interlock (70, 71) Field-supplied

Class 1 wiring to interlock condenser 24V controls to Liebert room unit; 7/8 in. (22.2mm) diameter hole provided in bottom of electric box.

Alarm Connections Field-supplied 24V Class 1 wiring to remote alarm circuits Variable Frequency Drive (VFD) alarm contact connections (13, 14)

Transient Voltage Surge Suppressor (TVSS) alarm contact connections (11, 12).

Electric service connection terminals with factory- supplied disconnect.

Factory-installed disconnect switch.

Electric service entrance. A 7/8" (22.2mm) diameter

hole in a 1-1/8 in (28.6mm) knockout provided in bottom of electric box.

Factory-wired to components

Earth ground connection (60Hz).

 

on electric panel.

Electric service,

Connection terminal for

 

not by Liebert

Earth ground bar (optional on 50Hz only). field-supplied earth grounding wire

 

Connection terminals with factory

when factory disconnect is supplied.

 

ground from each high voltage

 

 

component for field-supplied

 

 

earth grounding wire.

 

 

NOTE: Refer to specification sheet for full load amp. and wire size amp. ratings.

DPN001051 Rev. 0

24

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Liebert 1010, 205 251, 104 165, 308 415, 510 616 830 manual Electrical field connections for VFD control condensers