Single-Phase Voltage Tolerance; Heat Exchanger Auxiliary Control Wiring; Table 8 Three Phase Voltage Tolerance; Table 9 Single Phase Voltage Tolerance - Data Aire DAPA-2.5 Installation, Operation & Maintenance Manual

Single-Phase Voltage Tolerance

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.

Heat Exchanger Auxiliary Control Wiring

The interconnection of auxiliary control wiring for remote heat exchangers (condensers) requires the
connection of two (2) - 18-gauge wires for installations up to 100 feet (30 m) from the electrical control
box of the indoor evaporator to the electrical control box of the remote heat exchanger. Follow the
wiring diagrams for each of these pieces of equipment.
Condensing units (i.e., where the compressor is 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.
All control wiring on Data Aire equipment is 24 VAC or less. Refer to the wiring diagrams.
Check all wiring connections in the unit control panel to ensure they are tight. Screw terminals may
become loose in transit. Tightening of wiring connections is the responsibility of the installing contractor.

Table 8 Three Phase Voltage Tolerance

Voltage
208-230
460
575-600

Table 9 Single Phase Voltage Tolerance

Voltage
208-230
277
NOTICE: For installation more than 100 feet (30 m) and 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, require heavier gauge wire and a special
Parts order for a low holding current relay is required. Consult Data Aire Parts
department for detailed information. In this case, the installing contractor must
follow the applicable electrical codes to determine the required wire gauge.
Tolerance
-5% to +10%
±10%
±10%
Tolerance
-5% to +10%
-5% to +10%
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