Liebert 8 Tons User Manual
Site Preparation and Installation
24
Figure 15 Electrical field connections - outdoor condensing unit
Field supplied unit
disconnect switch.
disconnect switch.
Single or three phase
electric service not provided
by Liebert.
electric service not provided
by Liebert.
Field supplied 24V NEC class 2
wiring to evaporator module.
wiring to evaporator module.
Factory wired
to components on
electric panel.
Electric service
connection
to contactor
or terminal block.
to contactor
or terminal block.
Single or three phase
electric service not
provided by Liebert.
High voltage
electric power
supply entrance.
Low voltage
electric power supply
entrance.
Earth ground connection
terminal for field wiring.
terminal for field wiring.
NOTE:
Refer to specification sheet
for full load amp and wire size
amp ratings.
for full load amp and wire size
amp ratings.
Heat rejection connection.Field
supplied 24V NEC class 2 wiring.
Wire connections from evaporator module:
1 24V GND System 1
2 24V Supply System 1
3 High Pressure Alarm System 1
4 Hot Gas Bypass Connection System 1
(only on units with hot gas bypass.
If no hot gas bypass, connection is
provided in the evaporator module.
Connect wire 4 and wire 2 to the
24V supply).
5 24V GND System 2
6 24V Supply System 2
7 High Pressure Alarm System 2
8 Hot Gas Bypass Connection System 2
(only on units with hot gas bypass.
If no hot gas bypass, connection is
provided in the evaporator module.
Connect wire 8 and wire 6 to the
24V supply).
9 24V GND Condenser Fan
10 24V SUPPLY Condenser Fan
supplied 24V NEC class 2 wiring.
Wire connections from evaporator module:
1 24V GND System 1
2 24V Supply System 1
3 High Pressure Alarm System 1
4 Hot Gas Bypass Connection System 1
(only on units with hot gas bypass.
If no hot gas bypass, connection is
provided in the evaporator module.
Connect wire 4 and wire 2 to the
24V supply).
5 24V GND System 2
6 24V Supply System 2
7 High Pressure Alarm System 2
8 Hot Gas Bypass Connection System 2
(only on units with hot gas bypass.
If no hot gas bypass, connection is
provided in the evaporator module.
Connect wire 8 and wire 6 to the
24V supply).
9 24V GND Condenser Fan
10 24V SUPPLY Condenser Fan
DPN000135_Rev0