Table of Contents
Advertisement
PRODUCT DESIGN
Return air filters may be installated at the at the counterflow top return. A field supplied center filter support must be provided
by the installer in order to use the top return. The furnace will accommodate the following counterflow top return filter sizes
depending on cabinet size:
Optional
Access
Door
Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere
in the duct system such as a central return.
COOLING AIRFLOW REQUIREMENT (CFM)
600
800
0453__X*
207*
207*
0704__X*
---
---
0905__X*
---
---
1155__X*
---
---
COOLING AIRFLOW REQUIREMENT (CFM)
600
800
0714__X*
---
---
0915__X*
---
---
1155__X*
---
---
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter Area (in
[Based on a 600 ft/min filter face velocity]
Counterflow Filters
Return Air
"A"
Min
UPFLOW
1000
1200
1400
1600
240
288
---
---
318*
318*
336
384
---
413*
413*
413*
---
437*
437*
437*
COUNTERFLOW
1000
1200
1400
1600
316*
316*
336
384
---
409*
409*
409*
---
430*
430*
430*
2
Counterflow Top Return
Filter Area
Cabinet Width
2
(in
17 1/2
600
21
24 1/2
17 1/2
800
21
24 1/2
17 1/2
1000
21
24 1/2
1800
2000
---
---
---
---
432
480
432
480
1800
2000
---
---
432
480
432
480
)
Filter Size
Dimension "A"
Qty
(in)
)
2
15 X 20 X 1
2
20 X 20 X 1
2
25 X 20 X 1
(in)
14.2
13.0
11.3
19.7
18.8
17.7
25.0
24.3
23.4
13
Hide quick links:
Advertisement
Table of Contents
