Liebert 3000 installation manual DPN000228_Rev0, Split System Models

Split System Models

Figure 34 5 ton water/glycol cooled condensing unit (con't.)

Field-supplied unit disconnect switch when factory unit disconnect switch is not suplied

WATER/GLYCOL

Optional factory-installed disconnect switch

Electric service; not by Liebert

Field-supplied 24V NEC Class 1 wiring to fan/coil unit

Field-supplied 24V NEC Class 1 wiring to drycooler (glycol-cooled units only)

Removable

Access

Panel

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)

Line voltage electric power supply conduit voltage

Connection terminal for field-supplied earth grounding wire

Low-voltage electric power supply conduit entrance

Field-supplied 24V NEC Class 1 wiring between glycol condensing unit and drycooler

DPN000228_Rev0

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.

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