ECOSAIRE EN Series Owner'S Manual Download

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Ecosaire

EN Series Precision Air Conditioner Owners Manual

Ecosaire

July 2009

Data subject to change without notice.

Installation Wiring Power

IMPORTANT!

Before working on this or any

electrical equipment, disconnect
all electrical power. Failure to
do so may result in serious per-
sonal injury or death due to
accidental electrical shock.

The branch-circuit conductors

should be brought through the unit
cabinet to the high-voltage terminal
strip or factory-mounted disconnect
switch.

Wiring for the unit and remote

heat exchanger (if any) should
comply with applicable codes.

Important!

Always cover the electrical

components with plastic sheet
before drilling or sawing the
electrical enclosure. Do not
allow metal chips to fall into the
enclosure.

Important!

Use only copper conductors to

connect the unit. The power
input lugs are not sized for use
with other conductors. THE USE
OF OTHER THAN COPPER CON-
DUCTORS WILL VOID THE
EQUIPMENT WARRANTY. For

units with factory-supplied dis-
connects, follow instructions
inside the disconnect.

Important!

Ground the unit using the

grounding lug provided.

Important!

For

••

Air-Cooled Direct Expansion,

••

Glycol-Cooled Direct-

Expansion,

••

Air-Cooled DualCool,

••

Glycol-Cooled DualCool, and

••

FreeCool units

refer to the remote heat-
exchanger manual.

Wire the remote heat

exchanger according to the
wiring diagram provided with it.
Insure that the fan motors turn
in the correct direction.

Use properly sized wire

Refer to the unit nameplate for

electrical ratings. Size wires
according to applicable codes, with
allowance for voltage drops. Unit
terminal voltage should be nominal
±10% under all conditions, includ-
ing compressor starting.

Insure phase rotation

All the motors in the unit are con-

nected for the same phase rota-
tion. Be sure the phase rotation is
correct before completing the
installation.

Do not move any

factory-installed wires.

NOTE: The blower running direc-
tion can be used to test phase
rotation.

Insure phase voltage

The

Ecosaire

® unit complies with

NEMA MG-1 and other standards
for applied voltage. The applied
voltage should be within ±10% of
the nominal voltage shown on the
nameplate. See ANSI C84.1.
Phase voltages should be bal-
anced within 2%.

208V units

A minimum of 187V at the com-

pressor terminals is required for
compressor starting (see NEMA
MG-1). Allow for voltage drop
under inrush current conditions.

Connect input power as indicated.
Use copper wire only. Torque all connectors per NEC 110-14 or relevant code.
Position of power lugs may vary.

Some

Ecosaire

units may have optional

voltage monitors that prevent operation in the
event the branch circuit has voltage that is too
high, too low, has lost a phase, or has reversed
phase rotation. If the green LED
is not lit when power is applied to the unit, con-
firm that the applied voltage is within ±10% of
the nameplate voltage (NEMA MG-1), that all
three phases are present, and that the phase
rotation is correct.

INST

ALLA

TION

EXAMPLE

Appearance, location, and

quantity of component

may vary