Liebert Challenger ITR - Manual (Page 61)

Split System Models
55
Figure 28 Water/glycol-cooled condensing unit (con't.)
DPN000228_Rev0
Heat rejection connection.
Field-supplied 24V NEC
Class 2 wiring. Wire
connections from evaporator
mod:
1. 24V ground
2. 24V supply
3. High pressure alarm (optional)
4. Hot gas bypass
connection (only on units with
hot gas bypass)
Remote drycooler
connection; field-supplied
24V NEC Class 1 wiring
(glycol-cooled units only)
WATER/GLYCOL
Optional factory-installed
disconnect switch
Field-supplied 24V NEC Class1
wiring to fan/coil unit
Field-supplied unit disconnect
switch when factory unit
disconnect switch is not supplied
Field-supplied 24V NEC Class1
wiring to drycooler
(glycol-cooled units only)
Removable
Access
Panel
Connection terminal
for field-supplied
earth grounding wire
Line-voltage electric power
supply conduit entrance
Field-supplied 24V NEC
Class 1 wiring between
glycol condensing unit
and drycooler
Low-voltage electric
power supply conduit entrance
Electric service;
not by Liebert
NOTES
1. Refer to specification sheet for full load amp. and wire size amp. ratings.
2. Control voltage wiring must be a minimum of 16 GA (1.6mm) for up to 75' (23m)
or not to exceed 1 volt drop in control line.