Side discharge, Discharge configuration – Greenheck Fan SQ User Manual
Page 7
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The side discharge option provides several advantages
including removal of a system effect problem, increasing
performance, or even reducing installation labor. The
most notable is reducing system effects. Notice the
example in figure 1 showing the air being discharged
into the corner. It will take several duct lengths before
the airflow becomes smooth again after making the
turn. This is not the case with a side discharge. See
figure 2; when the air comes into the fan at the corner
and leaves the fan at the corner, the airflow is smoother
and provides a more predictable system. Remember the
duct length prior to or following the installation location
should be approximately two to three wheel diameters to
achieve catalog performance.
Discharge Configuration
Make sure the fan discharge is oriented in the same
direction as it was originally ordered. The performance
will change with different discharge positions. Right side
discharge will give you 108% of cataloged performance
and left side will give you 109% of cataloged
performance. Use figure 3 to locate the orientation to
fit your application. Figures 4 and 5 explain the proper
side discharge definitions. Refer to the CAPS program or
consult factory for performance modifications.
Side Discharge
SQ Side Discharge
Duct Openings
Unit Size
Width
Height
60-75
9
7
⁄
8
(251)
8
7
⁄
8
(225)
80-95
12
7
⁄
8
(327)
11
7
⁄
8
(302)
100
13
7
⁄
8
(352)
13
7
⁄
8
(352)
120
15
7
⁄
8
(403)
15
7
⁄
8
(403)
130
17
7
⁄
8
(454)
17
7
⁄
8
(454)
140
19
7
⁄
8
(505)
19
7
⁄
8
(505)
160
22
7
⁄
8
(581)
22
7
⁄
8
(581)
BSQ Side Discharge
Duct Openings
Unit Size
Width
Height
70-80-90
11
7
⁄
8
(302)
11
7
⁄
8
(302)
100
13
7
⁄
8
(352)
13
7
⁄
8
(352)
120
15
7
⁄
8
(403)
15
7
⁄
8
(403)
130-130HP 17
7
⁄
8
(454)
17
7
⁄
8
(454)
140-140HP 19
7
⁄
8
(505)
19
7
⁄
8
(505)
160-160HP 22
7
⁄
8
(581)
22
7
⁄
8
(581)
180-180HP 23
7
⁄
8
(606)
23
7
⁄
8
(606)
200-200HP 27
7
⁄
8
(708)
27
7
⁄
8
(708)
240-240HP 28
7
⁄
8
(733)
34
7
⁄
8
(886)
300-300HP 31
7
⁄
8
(810)
41
7
⁄
8
(1064)
360-360HP 32
7
⁄
8
(835)
37
7
⁄
8
(962)
420
34
7
⁄
8
(886)
43
7
⁄
8
(1114)
All dimensions in inches (millimeters).
Figure 2
Figure 1
Fan
Fan
Left Side
Discharge
Right Side
Discharge
Inline
Discharge
Inlet
Height
Width
Height
Left Side
Discharge
Right Side
Discharge
Inline
Discharge
Inlet
Width
Figure 5
Figure 4
+12%
+9%
+8%
+12%
Figure 3
-
Percentages based on cataloged performance.