268882-UIM-A-0407
26
Unitary Products Group
NOTES:
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 Table 14 represents blower per-
formance WITHOUT filters. To determine the approximate blower per-
formance of the system, apply the filter drop value for the filter being
used or select an appropriate value from the Table 15.
NOTE:
The filter pressure drop values in Table 15 are typical values for
the type of filter listed and should only be used as a guideline. Actual
pressure drop ratings for each filter type vary between filter manufactur-
ers.
TABLE 14:
Blower Performance CFM
Models
Input
Speed
Tap
Airflow with Top Return - without Filters (CFM)
Airflow with Top Return - without Filters (m
3
min)
EXTERNAL STATIC PRESSURE, INCHES W.C. (CFM
EXTERNAL STATIC PRESSURE (kPa)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.025 0.050 0.075 0.099 0.124 0.149 0.174
0.199
0.224 0.249
60
High
1687 1652 1631 1595 1557 1511 1456 1382 1313 1211
48
47
46
45
44
43
41
39
37
34
Med High 1193 1183 1173 1162 1142 1115 1076 1036 982
950
34
33
33
33
32
32
30
29
28
27
Med Low 933
933
921
911
902
872
825
793
771
712
26
26
26
26
26
25
23
22
22
20
Low
752
745
731
718
698
652
602
580
536
496
21
21
21
20
20
18
17
16
15
14
80
High
2071 2026 1981 1935 1864 1796 1713 1625 1532 1401
59
57
56
55
53
51
48
46
43
40
Med High 1583 1590 1569 1554 1532 1502 1457 1409 1327 1221
45
45
44
44
43
43
41
40
38
35
Med Low 1256 1275 1275 1288 1275 1265 1232 1187 1126 1023
36
36
36
36
36
36
35
34
32
29
Low
937
939
936
945
942
936
912
874
810
726
27
27
26
27
27
26
26
25
23
21
100
High
2404 2320 2225 2138 2034 1924 1816 1692 1559 1422
68
66
63
61
58
54
51
48
44
40
Med High 2018 1955 1883 1815 1750 1670 1586 1497 1394 1246
57
55
53
51
50
47
45
42
39
35
Med Low 1626 1581 1531 1488 1418 1363 1291 1225 1123 964
46
45
43
42
40
39
37
35
32
27
Low
1336 1291 1249 1205 1155 1091 1018 951
884
759
38
37
35
34
33
31
29
27
25
21
TABLE 15:
Filter Performance - Pressure Drop Inches W.C. and (kPa)
Airflow Range
Minimum
Opening Size
Filter Type
Disposable
Washable Fiber
Pleated
CFM
m
3
/min
in
2
cm
2
In W.C.
kPA
In W.C.
kPA
In W.C.
kPA
0 - 750
0 - 21.4
230
1484
0.01
0.00249
0.01
0.00249
0.15
0.03736
751 - 1000
21.25 - 28.32
330
2129
0.05
0.01245
0.05
0.01245
0.20
0.04982
1001 - 1250
28.33 - 35.40
330
2129
0.10
0.02491
0.10
0.02491
0.20
0.04982
1251 - 1500
35.41 - 42.48
330
2129
0.10
0.02491
0.10
0.02491
0.25
0.06227
1501 - 1750
42.49 - 49.55
380
2452
0.15
0.03736
0.14
0.03487
0.30
0.07473
1751 - 2000
49.56 - 56.63
380
2542
0.19
0.04733
0.18
0.04484
0.30
0.07473
2001 & Above
56.64 - Above
463
2987
0.19
0.04733
0.18
0.04484
0.30
0.07473