Liebert Air Cooled - Manual (Page 28)

Inspection and Installation
24
Figure 20 Electrical field connections for VFD control condensers
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).
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.
Factory-wired to components
on electric panel.
Earth ground connection (60Hz).
Connection terminal for
field-supplied earth grounding wire
when factory disconnect is supplied.
Earth ground bar (optional on 50Hz only).
Connection terminals with factory
ground from each high voltage
component for field-supplied
earth grounding wire.
Factory-installed fuse block on
60Hz units. Circuit breaker supplied
in lieu of fuse block on 50Hz units.
Electric service connection
terminals with factory-
supplied disconnect.
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.
Electric service,
not by Liebert
Factory-installed
disconnect switch.
DPN001051
Rev. 0
NOTE: Refer to specification sheet for full load amp. and wire size amp. ratings.