Ecosaire
®
July 2009 11
Owners Manual Ecosaire
®
EN Series Precision Air Conditioner
Major Cooling Options Product Description
Data subject to change without notice.
Water-Cooled Dual-Cool
Normally, heat is transferred to a flow
of chilled water (by others).
DualCool units include a three-way pro-
portional chilled-water valve, balanced
bypass line, flow switch and water-tem-
perature sensor. All are factory mounted
to copper piping for a standard working-
pressure rating of 400 psig (2758kPa),
ideal for high-rise buildings.
The unit is rated for use with 45°F
(7.2°C) chilled water. For flow rates and
other details, see
Installation - Piping
.
If the flow rate or temperature of the
chilled water becomes inadequate for
proper operation, the unit will automatical-
ly change to Water-Cooled Direct
Expansion.
The temperature of the cooling water
entering the unit must be between 65°F
(18.3°C) and 85°F (29.4°). Contact the
factory for lower temperatures.
chilled water or
other fluid,
(by others)
cooling water
or other fluid,
(by others)
DESCRIPTION
EXAMPLE
Appearance, location, and
quantity of component
s
may vary
.
EXAMPLE
Appearance, location, and
quantity of component
s
may vary
.
Ecosaire
Ecosaire
Chilled Water
The
Ecos
aire
unit increases or decreases the
flow of chilled water (by others) through an inter-
nal heat exchanger to control room conditions.
The unit is rated for use with 45°F chilled water.
For flows and other details, see
Installation - Piping
Summary of Contents for EN Series
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