ECOSAIRE EN Series, Руководство пользователя

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Ecosaire
®
EN Series Precision Air Conditioner Owners Manual
34 Ecosaire ® July 2009
Data subject to change without notice.
26.0
8.5
3.7
98
25.5
Model
EN-027W EN-035W EN-042W EN-051W EN-068W EN-079W EN-087W EN-102W
85°F (29°C)
Entering
Water Temp.
Flow (GPM)
Pressure Drop (ft.W.C.)
Pressure Drop (PSI)
Flow (l/min)
Pressure Drop (kPa) 34.0
14.7
6.4
129
44.1
44.0
9.4
4.1
167
28.3
54.0
14.3
6.2
204
42.7
56.0
7.6
3.3
219
22.8
66.4
10.6
4.6
251
31.7
66.4
10.6
4.6
251
31.7
72.4
7.8
3.4
274
23.4
IMPORTANT:
Contact the factory before using
a flow rate or temperature out-
side the ranges in the chart
below.
IMPORTANT:
Never allow dirt or other foreign
materials to enter the tubes connect-
ing to the
Ecosaire ® unit. Foreign
material may cause damage to
valves and other components.
If the inside of the tube is contami-
nated with dirt, oil, sludge, rust, or
other materials, then the pipes must
be thoroughly cleaned.
Where connection must be made
to metal tube other than copper
tube, install a dielectric union
between the different tubes to
reduce corrosion.
If tubes are silver-soldered, the
inside of the tube must be
protected from oxidation by
flooding the tube with an inert
gas such as nitrogen, argon, or
carbon dioxide.
Silver soldering
copper tubes with air inside will pro-
duce a flaky copper oxide scale that
can contaminate the system and
damage components.
If flux must be used, use only
enough flux to solder. Excess flux
can contaminate the heat transfer
fluid.
IMPORTANT:
Constant water flow is essential.
All pumps, cooling towers, fans,
etc., involved in cooling the water
must be enabled whenever the
Ecosaire
®
unit is operational. Do
not allow a timer or other device
to inhibit operation at any time
the Ecosaire
® unit is operational.
IMPORTANT:
Cooling water must be
protected from freezing if the
water flow could be interrupted
during low ambient temperatures.
Water-Pressure Switch
The flow-pressure switch must be
adjusted at installation. Adjust the
switch to close as the flow rate
approaches normal and to break as
the flow rate decreases to less than
1/2 of normal.
Condenser water pipes must be
sized to deliver the required con-
denser water flow. Pipe size is
determined by the available water
pressure, pressure drop within the
pipe and unit, length of run, maxi-
mum velocity, maximum water tem-
perature and flow requirements.
The table below lists the flow
requirements over a 65°F to 85°F
temperature range.
Connection sizes and locations
are shown on the unit dimensional
drawings.
The inlet header is connected to
the water regulating valves which
feed the top of the condensers.
The outlet header connects to the
bottom of the condensers.
To prevent condensation on the
pipes, insulate them if the water
temperature is likely to drop below
room-air dew point.
16.6
5.3
2.3
63
15.9
75°F (23°C)
Entering
Water Temp.
Flow (GPM)
Pressure Drop (ft.W.C.)
Pressure Drop (PSI)
Flow (l/min)
Pressure Drop (kPa) 21.0
8.3
3.6
80
24.8
27.0
4.6
2.0
102
13.8
32.0
6.7
2.9
121
20.0
32.6
2.5
1.1
123
7.6
38.0
3.7
1.6
144
11.0
38.0
3.7
1.6
144
11.0
44.0
3.0
1.3
167
9.0
Installation Piping Water
Water-Cooled Direct-Expansion and Water-Cooled DualCool Units Only
INST
ALLA
TION