Fordownflowapplications,the Media Cabinet (or field supplied
accessory air cleaner) nmst only be connected to the bottom
opening on the furnace. See Fig. 18 and 25.
For horizontal applications, the Media Cabinet (or field supplied
accessory air cleaner) for all models can be connected to the
bottom opening on the furnace. For side return use in the
horizontal position, refer to Fig. 26. If both side and bottom
openings are used in Fig. 26, each opening used will require a
filter.
The media cabinet (or field supplied accessory air cleaner) can also
be installed in the common return duct prior to entering the return
air opening in any orientation.
Refer to the instructions supplied with Media Cabinet or accessory
air filter for assembly and other details.
See Table 5 for filter size details.
Table 5 - Filter Size Information - In. (mm)
FILTER SIZE
FURNACE CASING WIDTH FILTER TYPE
SIDE RETURN BOTTOM RETURN
16 x 25 x 6/4 14 x 25 x 6/4 Washable*
14-3/161- (360) (406 x 635 x 19) (356 x 635 x 19)
16 x 25 x 3/4 16 x 25 x 3/4 Washable*
17-1/2 (445) (406 x 635 x 19) (406 x 635 x 19)
16 x 25 x 6/4 20 x 25 x 6/4 Washable*
21 (533) (406 x 635 x 19) (508 x 635 x 19)
16 x 25 x 6/4 24 x 25 x 6/4 Washable*
24-1/2 (622) (406 x 635 x 19) (610 x 635 x 19)
Recommended to maintain air filter face velocity. See Product Data for part number.
1- Not all families have these models.
Air Filter Located in Filter Cabinet
FILTER CABINET HEIGHT - IN (MM) FILTER SIZE - IN (MM) FILTER TYPE
(1) 16 x 25 x 3/4"
(406 x 635 x 19) or Washable or Media*
16 (406) (1) 16 x 25 x 4-5/16
(406 x 665 x 11 O)
(1) 20 x 25 x 6/4"
(508 x 665 x 19) or Washable or Media*
20 (508) (1) 20 x 25 x 4-5/16
(508 x 665 x 11 O)
(1) 24 x 25 x 3/4"or
(610 x 665 x 19) or Washable or Media*
24 (610) (1) 24 x 25 x 4-5/16
(610 x 635 x 11 O)
Filters with a side return-air may have a different filter size. Measure the filter to obtain the correct size.
Recommended to maintain air filter face velocity. See Product Data for part number.
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