140.010-IOM (NOV 2019)
Page 8
IDSC EVAPORATIVE CONDENSERS
INSTALLATION
EQUIPMENT LAYOUT
IDSC is an induced draft, counter flow, evaporative cooled
product line consisting of a four sided air entry configu
-
ration. Properly evaluating equipment location leads to
a successful installation and subsequent proper opera
-
tion. This manual provides suggestions for various layout
scenarios including placing equipment in close proximity
to an obstruction, such as a wall. In addition, FRICK offers
both dual and quad unit configurations in which the
air
inlet openings are increased appropriately, in comparison
to a single unit, to enable the absolute minimum clearance
betw
een units. See Figure 5 to Figure 10 for details.
The minimum clearances listed between an obstruction
and the air inlet side or end is a guideline only. There
are always circumstances, for example prevailing winds,
coupled with field experience which lead to alternate lay
-
outs that would increase a minimum clearance presented
in this manual to achieve proper operation.
It is recommended to place the equipment in a free-
field environment, when possible, to ensure the required
ambient airflow and prevent recirculation of the saturated
discharge air. Units located on open rooftops or at ground
level with no obstructions, such as walls or adjacent build
-
ings are the optimum location. However, in many instances
this cannot be realized. Positioning in wells, next to high
walls, adjacent buildings, occupied areas or specific
enclosures all pose a risk of recirculating the saturated
discharge air. This increases the wet bulb temperature of
the intake air and compromises the performance of the
condenser, which can result in higher condensing tem
-
peratures. Use discharge hoods or duct extensions in such
instances. Units that are located in a well, an enclosure,
or close to adjacent walls or buildings must be positioned
such that the discharge at the top of the condenser is
either level or higher than these adjacent obstacles.
If the unit is located in occupied areas or close to adja
-
cent buildings, it is good engineering practice that the
discharge air is not in the direction of, or in close proxim
-
ity to, any air intake location for the building’s ventilation
system.
SINGLE/MULTIPLE UNIT LAYOUTS
All minimum clearance values indicated are for IDSC
induced draft units only. In addition, overall nominal unit
lengths are indicated as well. A unit is a specific model
number which consists of a single nominal box size or
multiple, single boxes arranged in very close proximity.
See Table 1
for model with dimensions. There are three
different unit configurations available: single, dual, and
quad. A dual unit, for example, can be two, 12 ft x 12 ft
single boxes positioned end-to-end which is designated
as one model number and is considered one unit. Figure 2
to 7 highlight different potential layouts in which a unit or
units can be properly located on-site.
Figure 5: No obs
truction/two units
Table 2: No obstruction/two units
Unit configuration
Unit
length (ft)
C3 and C4
(ft)
Single
9
3
Single
12
6.5
Single
18
6.5
Dual (end-to-end)
All
8.5
Dual (side-to-side)
All
13
Quad
All
13
Table 1: IDSC configurations and air inlet and basin heights (in.)
Unit
Size
(ft)
Single unit
Dual end to end
Dual side by side
Quad unit
Inlet louver
height (L)
Basin
height (H)
Inlet louver
height (L)
Basin height
(H)
Inlet louver
height (L)
Basin
height (H)
Inlet louver
height (L)
Basin
height (H)
8.5 x 12
30
57.5
—
—
—
—
—
—
10 x 12
36
63.5
48
75.5
—
—
—
—
12 x 12
36
63.5
48
75.5
78
105.5
78
105.5
10 x 18
48
75.5
48
75.5
—
—
—
—
12 x 18
48
75.5
78
105.5
78
105.5
78
105.5
Note:
Consult factory for additional information. For reference only, use certified drawings for design purposes
.
C4
C3