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unit warranty. For three-phase units, only three power wires and an earth ground are required.
A neutral is not required at the unit input connections.
Three Phase Voltage Tolerance
Voltage
Tolerance
208-230
-5% to +10%
460
±10%
575-600
±10%
3.5.2. Single-Phase Voltage Tolerance (
Not available for gForce Ultra units
)
The supply voltage to the unit for single phase operation must have a tolerance per table below.
The local utility company should be contacted for correction of improper line voltage. Deviation
from ratings can cause premature failures and possibly void unit warranty. A neutral is not
required at the unit input connections.
Single Phase Voltage Tolerance
Voltage
Tolerance
208-230
-5% to +10%
277
-5% to +10%
3.6.
Auxiliary Control Wiring
The interconnection of auxiliary control wiring for remote heat exchangers (condensers and fluid
coolers) requires the connection of two (2) - 18-gauge wires for installations up to 150 feet (45
m) or 16-gauge wires for installations from 151 feet (46 m) up to 200 feet (61 m) from the
electrical control box of the indoor evaporator to the electrical control box of the remote heat
exchanger. Condensing units (i.e., where the compressor(s) are mounted in the remote heat
exchanger) will typically require (4) or more wiring connection points and may require heavier
gauge wire. In this case, the installing contractor must follow the applicable electrical codes to
determine the required wire gauge.
Because of the wide variety of indoor evaporators and remote heat exchangers offer by Data
Aire, the installing contractor must refer to the schematic which is provided inside the electrical
control box of each unit, for the required auxiliary control wiring interconnection terminal points.
Examples:
Figure 10 Typical Remote Heat Exchanger Interconnection Points