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F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
For downflow applications, the filter rack (or field supplied accessory air
cleaner) must only be connected to the bottom opening on the furnace,
see
Fig.
21.
For horizontal applications, the filter rack (or field supplied accessory air
cleaner) can be connected to the bottom opening on the furnace. For side
return use in the horizontal position, see
openings are used in
Fig.
22, each opening used will require a filter.
A filter rack or any field supplied accessory air cleaner can also be
installed in the common return duct prior to entering the return air
opening in any orientation.
14 x 25 Filter
CFM
L/s
600
(283)
800
(378)
1000
(472)
1200
(566)
16x 25 Filter
CFM
L/s
600
(283)
800
(378)
1000
(472)
1200
(566)
1400
(661)
1600
(755)
1800
(850)
20 x 25 Filter
CFM
(L/s)
800
(378)
1000
(472)
1200
(566)
1400
(661)
1600
(755)
1800
(850)
2000
(944)
2200
(1038)
25 x 25 Filter
CFM
L/s
800
(378)
1000
(472)
1200
(566)
1400
(661)
1600
(755)
1800
(850)
2000
(944)
2200
(1038)
*. Representative estimates from filter manufacturer data sheets.
See manufacturers' specifications for pressure drop versus airflow data for specific filter media.
If the filter size that you are looking for is not contained in
airflow) versus Face Velocity for a variety of filter media types.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig.
22. If both side and bottom
Table 6 – Filter Information
Factory-Accy
Washable
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
0.04
(12)
0.07
0.06
(15)
0.10
0.07
(18)
0.13
0.08
(20)
0.17
Factory-Accy
Washable
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
0.04
(10)
0.06
0.05
(13)
0.08
0.06
(16)
0.11
0.07
(18)
0.14
0.08
(21)
0.18
0.09
(23)
0.21
0.10
(25)
0.26
Factory-Accy
Washable
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
0.04
(11)
0.06
0.05
(13)
0.08
0.06
(15)
0.11
0.07
(17)
0.13
0.08
(19)
0.16
0.08
(21)
0.18
0.09
(23)
0.21
0.09
(24)
0.25
Factory-Accy
Washable
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
0.03
(9)
0.05
0.04
(11)
0.06
0.05
(13)
0.08
0.06
(15)
0.10
0.06
(16)
0.11
0.07
(18)
0.13
0.08
(19)
0.16
0.08
(21)
0.18
Refer to the instructions supplied with the Filter Rack or accessory air
filter for assembly and other details.
Due to the relatively high pressure drops of 1-in (25 mm) thick
after-market filter media, it is recommended that the filtration system be
designed for at least 2-in (51 mm) thick media.
TIPS FROM CONTRACTORS: Install a media cabinet capable of
incorporating a 4-in (102 mm) thick media filter. This allows room for
future upgrades to other IAQ devices.
Representative After-Market Filter Media
*
Fiberglass
(2-in. / 5 cm)
(17)
0.10
(26)
(25)
0.15
(39)
(34)
0.21
(52)
(43)
0.27
(68)
Representative After-Market Filter Media
*
Fiberglass
(2-in. / 5 cm)
(15)
0.09
(22)
(21)
0.13
(32)
(28)
0.17
(43)
(36)
0.22
(56)
(45)
0.28
(70)
(54)
-
-
(64)
-
-
Representative After-Market Filter Media
*
Fiberglass
(2-in. / 5 cm)
(16)
0.09
(24)
(21)
0.13
(32)
(27)
0.16
(41)
(33)
0.20
(51)
(40)
0.24
(61)
(47)
0.29
(73)
(54)
-
-
(62)
-
-
Representative After-Market Filter Media
*
Fiberglass
(2-in. / 5 cm)
(12)
0.07
(18)
(16)
0.09
(24)
(20)
0.12
(31)
(24)
0.15
(38)
(29)
0.18
(45)
(34)
0.21
(53)
(39)
0.24
(61)
(45)
0.28
(70)
Table
5, refer to
Table 6
for a comparison of Pressure Drop (initial/clean resistance to
18
*
*
Pleated
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.24
(60)
0.16
0.34
(85)
0.23
-
-
0.32
-
-
-
*
*
Pleated
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.20
(51)
0.13
0.29
(72)
0.20
-
-
0.27
-
-
-
-
-
-
-
-
-
-
-
-
*
*
Pleated
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.22
(55)
0.15
0.29
(72)
0.20
-
-
0.25
-
-
0.31
-
-
-
-
-
-
-
-
-
-
-
-
*
*
Pleated
(1-in. / 2.5 cm)
(2-in. / 5 cm)
0.17
(43)
0.11
0.22
(55)
0.15
0.27
(68)
0.18
-
-
0.23
-
-
0.28
-
-
-
-
-
-
-
-
-
(40)
(59)
(81)
-
(34)
(49)
(67)
-
-
-
-
(37)
(49)
(63)
(79)
-
-
-
-
(28)
(37)
(47)
(58)
(69)
-
-
-
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