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VL Series Portable Chillers, 0.25 to 1.5 Tons UGH020/0301
2.5 ELECTRICAL CONNECTION
A. NEMA 1 MODELS
1. Electrical power supply requirements for Nema 1 units
(figure 2.5A) are identified on the equipment data plate.
Verify that available voltage supply is the same as the unit’s
voltage requirements. WARNING: Do not connect the
unit to a voltage supply source not equal to the unit’s
voltage requirements as specified on the unit’s data
plate. Use of incorrect voltage will void the unit’s
warranty and cause a significant hazard that may result
in serious personal injury and unit damage.
2. A factory supplied, four conductor cable is installed for
connection to a customer supplied fused power disconnect
device. The fused disconnect device shall be sized and
installed according to the unit’s power supply requirements
and local electrical codes.
C. CONTROL CIRCUIT WIRING
1. The unit’s supplied control circuit is indicated in the
electrical diagrams. The control circuit is supplied by the
factory installed transformer.
D. GENERAL
1. Make certain all ground connections to the unit are
properly affixed.
2. Make certain power conductor, disconnect device, and
fusing are properly sized according to the unit’s power
supply requirements.
3. Make certain all electrical connections are tightly affixed.
Any loose wiring connections must be tighten before
engaging the power supply.
4. Make certain no moisture or standing water is present
inside the electrical cabinet.
Microprocessor
controller
Illuminated on/off
switch
Motor starter
Transformer