Vertiv Liebert Drycooler, Installer/User Manual, Page: 99 / 102

REV : 2
REV DATE : 3/17
DPN000723
Page :1 /1
6 & 8 FAN QUIET-LINE MODELS W/ DSO/DDO PUMP CONTROL
F
or
m
N
o.
: D
P
N
00
10
40
_R
E
V
4
ELECTRICAL FIELD CONNECTIONS
LIEBERT DRYCOOLER
NOTE: Refer to specification sheet for full load amp. and wire size amp. ratings.
24
50 70
71 7
7 74
Facroty wired to 24V
Class 2 control circuit
Unit Alarm Connection
Field supplied 24V
Class 2 wiring to
terminals 24 & 50 to
indicate "Standby Glycol
Pump On" (supplied with
dual pump controls only).
Control Interlock
Field supplied Class 2
wiring to interlock
drycooler 24V controls
to Liebert room unit.
O
7/8" (22mm) hole
provided in bottom
of electric box.
Flow Switch Connection
(dual pump controls only)
Field supplied 24V Class 2
wiring from terminals 74 & 77
to factory supplied and
field mounted flow switch.
Electric Service Connection
Teminals for power supply to
pumps when pump controls
are factory supplied. Dual
pump connection shown.
O
7/8" (22mm) knockouts
provided in bottom of
electric box.
Earth Ground Bar (50Hz).
Connection terminals with
factory ground from each
high voltage component
for field supplied earth
grounding wire.
Earth Ground Connection (60Hz).
Connection terminal for field supplied
earth grounding wire.
Electric Service Entrance.
A
O
7/8" (22mm) knockout
provided in bottom of
electric box.
Electric service
not by Liebert.
Factory installed
disconnect switch
Electric service
connection terminals
for field wiring
Electric service
connection block
(factory wired)
Factory wired to components
on electric panel