F96CTN and G96CTN (Series A): Installation, Start-up, Operating, Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
19
Table 7 – Filter Media Pressure Drop (Clean) Versus Airflow - In. W.C. (Pa)
Table 8 – Filter Media Pressure Drop (Clean) Versus Face Velocity- In. W.C. (Pa)
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used.
See
. Install field-supplied, 5/16 x 1-1/2 in. (8 x 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
NOTE:
Bottom closure must be used when leveling legs are used. It
may be necessary to remove and reinstall bottom closure panel to install
leveling legs. To remove bottom closure panel, see
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each bottom
corner of furnace.
2. For each leg, install nut on bolt and then install bolt with nut in
hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install flat washer
if desired.)
4. Adjust outside nut to provide desired height, and tighten inside nut
to secure arrangement.
14 x 25 Filter
(356 x 635 mm)
Factory-Accessory
Washable
Representative After-Market Filter Media
*
*. If the filter size that you are looking for is not contained in
, refer to
for a comparison of Pressure Drop (initial/clean resistance to 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
Fiberglass
Pleated
CFM
L/s
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
600
(283)
0.04
(12)
0.07
(17)
0.10
(26)
0.24
(60)
0.16
(40)
800
(378)
0.06
(15)
0.10
(25)
0.15
(39)
0.34
(85)
0.23
(59)
1000
(472)
0.07
(18)
0.13
(34)
0.21
(52)
-
-
0.32
(81)
1200
(566)
0.08
(20)
0.17
(43)
0.27
(68)
-
-
-
-
16 x 25 Filter
(406 x 635 mm)
Factory-Accessory
Washable
Representative After-Market Filter Media
Fiberglass
Pleated
CFM
L/s
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
600
(283)
0.04
(10)
0.06
(15)
0.09
(22)
0.20
(51)
0.13
(34)
800
(378)
0.05
(13)
0.08
(21)
0.13
(32)
0.29
(72)
0.20
(49)
1000
(472)
0.06
(16)
0.11
(28)
0.17
(43)
-
-
0.27
(67)
1200
(566)
0.07
(18)
0.14
(36)
0.22
(56)
-
-
-
-
1400
(661)
0.08
(21)
0.18
(45)
0.28
(70)
-
-
-
-
1600
(755)
0.09
(23)
0.21
(54)
-
-
-
-
-
-
1800
(850)
0.10
(25)
0.26
(64)
-
-
-
-
-
-
20 x 25 Filter
(508 x 635 mm)
Factory-Accessory
Washable
Representative After-Market Filter Media
Fiberglass
Pleated
CFM
(L/s)
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
800
(378)
0.04
(11)
0.06
(16)
0.09
(24)
0.22
(55)
0.15
(37)
1000
(472)
0.05
(13)
0.08
(21)
0.13
(32)
0.29
(72)
0.20
(49)
1200
(566)
0.06
(15)
0.11
(27)
0.16
(41)
-
-
0.25
(63)
1400
(661)
0.07
(17)
0.13
(33)
0.20
(51)
-
-
0.31
(79)
1600
(755)
0.08
(19)
0.16
(40)
0.24
(61)
-
-
-
-
1800
(850)
0.08
(21)
0.18
(47)
0.29
(73)
-
-
-
-
2000
(944)
0.09
(23)
0.21
(54)
-
-
-
-
-
-
2200
(1038)
0.09
(24)
0.25
(62)
-
-
-
-
-
-
25 x 25 Filter
(635 x 635 mm)
Factory-Accessory
Washable
Representative After-Market Filter Media
Fiberglass
Pleated
CFM
L/s
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
800
(378)
0.03
(9)
0.05
(12)
0.07
(18)
0.17
(43)
0.11
(28)
1000
(472)
0.04
(11)
0.06
(16)
0.09
(24)
0.22
(55)
0.15
(37)
1200
(566)
0.05
(13)
0.08
(20)
0.12
(31)
0.27
(68)
0.18
(47)
1400
(661)
0.06
(15)
0.10
(24)
0.15
(38)
-
-
0.23
(58)
1600
(755)
0.06
(16)
0.11
(29)
0.18
(45)
-
-
0.28
(69)
1800
(850)
0.07
(18)
0.13
(34)
0.21
(53)
-
-
-
-
2000
(944)
0.08
(19)
0.16
(39)
0.24
(61)
-
-
-
-
2200
(1038)
0.08
(21)
0.18
(45)
0.28
(70)
-
-
-
-
Face Velocity
Factory-Accy
Washable
Representative After-Market Filter Media
*
*. Recommended to maintain air filter face velocity. See Specification for part number.
Fiberglass
Pleated
FPM
(m/s)
(1-in. / 2.5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
(1-in. / 2.5 cm)
(2-in. / 5 cm)
200
(1)
0.04
(10)
0.05
(13)
0.08
(20)
0.18
(47)
0.12
(31)
300
(1.5)
0.05
(14)
0.09
(22)
0.13
(34)
0.30
(75)
0.21
(52)
400
(2)
0.07
(17)
0.13
(32)
0.20
(50)
-
-
0.31
(78)
500
(2.5)
0.08
(21)
0.18
(44)
0.27
(69)
-
-
-
-
600
(3)
0.09
(23)
0.23
-
-
-
-
-
-
-
700
(3.6)
0.10
(26)
0.29
-
-
-
-
-
-
-