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926SA: Installation, Start-up, Operating, Service and Maintenance Instructions
14 x 25 Filter
Factory-Accessory
(356 x 635 mm)
Washable
CFM
L/s
(1-in. / 2.5 cm)
600
(283)
0.04
800
(378)
0.06
1000
(472)
0.07
1200
(566)
0.08
16 x 25 Filter
Factory-Accessory
(406 x 635 mm)
Washable
CFM
L/s
(1-in. / 2.5 cm)
600
(283)
0.04
800
(378)
0.05
1000
(472)
0.06
1200
(566)
0.07
1400
(661)
0.08
1600
(755)
0.09
1800
(850)
0.10
20 x 25 Filter
Factory-Accessory
(508 x 635 mm)
Washable
CFM
(L/s)
(1-in. / 2.5 cm)
800
(378)
0.04
1000
(472)
0.05
1200
(566)
0.06
1400
(661)
0.07
1600
(755)
0.08
1800
(850)
0.08
2000
(944)
0.09
2200
(1038)
0.09
25 x 25 Filter
Factory-Accessory
(635 x 635 mm)
Washable
CFM
L/s
(1-in. / 2.5 cm)
800
(378)
0.03
1000
(472)
0.04
1200
(566)
0.05
1400
(661)
0.06
1600
(755)
0.06
1800
(850)
0.07
2000
(944)
0.08
2200
(1038)
0.08
*. Recommended to maintain air filter face velocity. See Product Data for part number.
If the filter size that you are looking for is not contained in
airflow) versus Face Velocity for a variety of filter media types.
The following equations relate Face Velocity (FPM), Filter Area and Airflow (CFM):
Filter Face Velocity = Airflow / Filter Area
Minimum Filter Area = Rated System Airflow / Maximum Filter Face Velocity
Factory-Accessory
Face Velocity
FPM
(m/s)
200
(1)
0.04
300
(1.5)
0.05
400
(2)
0.07
500
(2.5)
0.08
600
(3)
0.09
700
(3.6)
0.10
*. Recommended to maintain air filter face velocity. See Product Data for part number
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 7 – Filter Media Pressure Drop (Clean) Versus Airflow - In. W.C. (Pa)
Factory-Accessory
*
Media
(4-in. / 10 cm)
(12)
0.05
(12)
(15)
0.07
(19)
(18)
0.10
(27)
(20)
0.14
(36)
Factory-Accessory
*
Media
(4-in. / 10 cm)
(10)
0.05
(13)
(13)
0.07
(18)
(16)
0.11
(28)
(18)
0.15
(37)
(21)
0.19
(48)
(23)
0.24
(60)
(25)
-
Factory-Accessory
*
Media
(4-in. / 10 cm)
(11)
0.05
(12)
(13)
0.07
(18)
(15)
0.09
(22)
(17)
0.12
(31)
(19)
0.15
(38)
(21)
0.18
(47)
(23)
0.22
(56)
(24)
0.26
(66)
Factory-Accessory
*
Media
(4-in. / 10 cm)
(9)
0.03
(8)
(11)
0.05
(12)
(13)
0.07
(17)
(15)
0.09
(23)
(16)
0.12
(31)
(18)
0.14
(35)
(19)
0.16
(41)
(21)
0.19
(49)
Table
Table 8 – Filter Media Pressure Drop (Clean) Versus Face Velocity- In. W.C. (Pa)
Washable
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(10)
0.05
(14)
0.09
(17)
0.13
(21)
0.18
(23)
0.23
(26)
0.29
Representative After-Market Filter Media
Fiberglass
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.07
(17)
0.10
0.10
(25)
0.15
0.13
(34)
0.21
0.17
(43)
0.27
Representative After-Market Filter Media
Fiberglass
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.06
(15)
0.09
0.08
(21)
0.13
0.11
(28)
0.17
0.14
(36)
0.22
0.18
(45)
0.28
0.21
(54)
-
0.26
(64)
Representative After-Market Filter Media
Fiberglass
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.06
(16)
0.09
0.08
(21)
0.13
0.11
(27)
0.16
0.13
(33)
0.20
0.16
(40)
0.24
0.18
(47)
0.29
0.21
(54)
0.25
(62)
Representative After-Market Filter Media
Fiberglass
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.05
(12)
0.07
0.06
(16)
0.09
0.08
(20)
0.12
0.10
(24)
0.15
0.11
(29)
0.18
0.13
(34)
0.21
0.16
(39)
0.24
0.18
(45)
0.28
7, refer to
Table 8
for a comparison of Pressure Drop (initial/clean resistance to
Representative After-Market Filter Media
*
Fiberglass
(2-in. / 5 cm)
(13)
0.08
(22)
0.13
(32)
0.20
(44)
0.27
-
-
-
-
21
*
(1-in. / 2.5 cm)
(26)
0.24
(60)
(39)
0.34
(85)
(52)
-
(68)
-
*
(1-in. / 2.5 cm)
(22)
0.20
(51)
(32)
0.29
(72)
(43)
-
(56)
-
(70)
-
-
-
-
-
-
-
*
(1-in. / 2.5 cm)
(24)
0.22
(55)
(32)
0.29
(72)
(41)
-
(51)
-
(61)
-
(73)
-
-
-
-
-
-
-
*
(1-in. / 2.5 cm)
(18)
0.17
(43)
(24)
0.22
(55)
(31)
0.27
(68)
(38)
-
(45)
-
(53)
-
(61)
-
(70)
-
*
Pleated
(1-in. / 2.5 cm)
(20)
0.18
(47)
(34)
0.30
(75)
(50)
-
-
(69)
-
-
-
-
-
-
-
-
*
*
Pleated
(2-in. / 5 cm)
0.16
(40)
0.23
(59)
-
0.32
(81)
-
-
-
*
*
Pleated
(2-in. / 5 cm)
0.13
(34)
0.20
(49)
-
0.27
(67)
-
-
-
-
-
-
-
-
-
-
-
-
*
*
Pleated
(2-in. / 5 cm)
0.15
(37)
0.20
(49)
-
0.25
(63)
-
0.31
(79)
-
-
-
-
-
-
-
-
-
-
-
-
*
*
Pleated
(2-in. / 5 cm)
0.11
(28)
0.15
(37)
0.18
(47)
-
0.23
(58)
-
0.28
(69)
-
-
-
-
-
-
-
-
-
*
(2-in. / 5 cm)
0.12
(31)
0.21
(52)
0.31
(78)
-
-
-
-
-
-
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