4
Unitary Products Group
036-21560-001 Rev. A (0204)
1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m
3
/min).
2. Motor voltage at 115 V.
FILTER PERFORMANCE
The airflow capacity data published in the “Blower Perfor-
mance” table listed above represents blower performance
WITHOUT filters. To determine the approximate blower per-
formance of the system, apply the filter drop value for the fil-
ter being used or select an appropriate value from the “Filter
Performance” table shown.
NOTE:
The filter pressure drop values in the “Filter Perfor-
mance” table shown are typical values for the type of filter
listed and should only be used as a guideline. Actual pres-
sure drop ratings for each filter type vary between filter manu-
facturer.
BLOWER PERFORMANCE CFM
AIRFLOW WITH TOP RETURN
MODELS
Speed
Tap
EXTERNAL STATIC PRESSURE, INCHES W.C. (kPa)
Input/
Output/
Airflow/
cabinet
0.1 (0.025)
0.2 (0.050)
0.3 (0.075)
0.4 (0.099)
0.5 (0.124)
0.6 (0.149)
0.7 (0.174)
0.8 (0.199)
0.9 (0.224)
1.0 (0.249)
CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min CFM m
3
/min
60/55/
1200/B
High
1687
48
1652
47
1631
46
1595
45
1557
44
1511
43
1456
41
1382
39
1313
37
1211
34
Medium High 1193
34
1183
33
1173
33
1162
33
1142
32
1115
32
1076
30
1036
29
982
28
950
27
Medium Low 933
26
933
26
921
26
911
26
902
26
872
25
825
23
793
22
771
22
712
20
Low
752
21
745
21
731
21
718
20
698
20
652
18
602
17
580
16
536
15
496
14
80/75/
1200/B
High
1686
48
1658
47
1623
46
1572
44
1534
43
1465
41
1391
39
1305
37
1202
34
1091
31
Medium High 1257
36
1223
35
1218
34
1203
34
1177
33
1142
32
1094
31
1026
29
939
27
874
25
Medium Low 977
28
982
28
976
28
955
27
934
26
899
25
843
24
791
22
738
21
686
19
Low
775
22
777
22
757
21
733
21
698
20
663
19
627
18
584
17
549
16
490
14
80/75/
1600/C
High
2071
59
2026
57
1981
56
1935
55
1864
53
1796
51
1713
48
1625
46
1532
43
1401
40
Medium High 1583
45
1590
45
1569
44
1554
44
1532
43
1502
43
1457
41
1409
40
1327
38
1221
35
Medium Low 1256
36
1275
36
1275
36
1288
36
1275
36
1265
36
1232
35
1187
34
1126
32
1023
29
Low
937
27
939
27
936
26
945
27
942
27
936
26
912
26
874
25
810
23
726
21
100/95/
1600/C
High
1996
56
1961
56
1938
55
1896
54
1836
52
1779
50
1707
48
1625
46
1531
43
1399
40
Medium High 1449
41
1480
42
1495
42
1488
42
1488
42
1449
41
1417
40
1368
39
1299
37
1208
34
Medium Low 1167
33
1192
34
1192
34
1187
34
1202
34
1192
34
1182
33
1140
32
1097
31
1018
29
Low
932
26
900
25
871
25
840
24
805
23
761
22
710
20
663
19
641
18
623
18
100/95/
2000/C
High
2404
68
2320
66
2225
63
2138
61
2034
58
1924
54
1816
51
1692
48
1559
44
1422
40
Medium High 2018
57
1955
55
1883
53
1815
51
1750
50
1670
47
1586
45
1497
42
1394
39
1246
35
Medium Low 1626
46
1581
45
1531
43
1488
42
1418
40
1363
39
1291
37
1225
35
1123
32
964
27
Low
1336
38
1291
37
1249
35
1205
34
1155
33
1091
31
1018
29
951
27
884
25
759
21
120/112/
2000/D
High
2520
71
2432
69
2353
67
2251
64
2152
61
2042
58
1947
55
1815
51
1701
48
1525
43
Medium High 2018
57
1979
56
1945
55
1911
54
1863
53
1779
50
1705
48
1599
45
1493
42
1353
38
Medium Low 1586
45
1545
44
1501
42
1457
41
1407
40
1351
38
1287
36
1216
34
1081
31
926
26
Low
1321
37
1266
36
1213
34
1163
33
1111
31
1071
30
987
28
864
24
763
22
700
20
FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. AND (KPA)
AIRFLOW RANGE
MINIMUM
OPENING SIZE
FILTER TYPE
DISPOSABLE
COARSE FIBER
WASHABLE
*
*
PLEATED
CFM
m
3
/m
in
2
cm
2
In W.C.
kPA
In W.C.
kPA
In W.C..
kPA
0 - 750
0 - 21.4
230
584.2
0.01
0.00249
0.01
0.00249
0.15
0.03736
751 - 1000
21.25 - 28.32
330
838.2
0.05
0.01245
0.05
0.01245
0.20
0.04982
1001 - 1250
28.33 - 35.40
330
838.2
0.10
0.02491
0.10
0.02491
0.20
0.04982
1251 - 1500
35.41 - 42.48
330
838.2
0.10
0.02491
0.10
0.02491
0.25
0.06227
1501 - 1750
42.49 - 49.55
380
965.2
0.15
0.03736
0.14
0.03487
0.30
0.07473
1751 - 2000
49.56 - 56.63
380
965.2
0.19
0.04733
0.18
0.04484
0.30
0.07473
2001 & Above
56.64 - Above
463
1176.0
0.19
0.04733
0.18
0.04484
0.30
0.07473
*.
Coarse Fiber Filters are the type supplied with furnace (if supplied).
