Retrotec Commercial 441 and 451 DucTester User Manual
Page 35
Page 35 of 56
©Retrotec Inc. 2015
Figure 18 Leakage Class lookup table.
Leakage Class, C
L
@ Pressure, in WC >>> 0.2
0.5
1
2
3
4
6
8
10
Leakage Factor,F
CFM/100 sq ft
0.6
1.7
0.9
0.6
0.4
0.3
0.2
0.2
0.2
0.1
0.8
2.3
1.3
0.8
0.5
0.4
0.3
0.2
0.2
0.2
1
2.8
1.6
1.0
0.6
0.5
0.4
0.3
0.3
0.2
1.2
3.4
1.9
1.2
0.8
0.6
0.5
0.4
0.3
0.3
1.4
4.0
2.2
1.4
0.9
0.7
0.6
0.4
0.4
0.3
1.6
4.6
2.5
1.6
1.0
0.8
0.6
0.5
0.4
0.4
1.8
5.1
2.8
1.8
1.1
0.9
0.7
0.6
0.5
0.4
2
5.7
3.1
2.0
1.3
1.0
0.8
0.6
0.5
0.4
2.5
7.1
3.9
2.5
1.6
1.2
1.0
0.8
0.6
0.6
3
8.5
4.7
3.0
1.9
1.5
1.2
0.9
0.8
0.7
3.5
10.0
5.5
3.5
2.2
1.7
1.4
1.1
0.9
0.8
4
11.4
6.3
4.0
2.5
2.0
1.6
1.2
1.0
0.9
4.5
12.8
7.1
4.5
2.9
2.2
1.8
1.4
1.2
1.0
5
14.2
7.8
5.0
3.2
2.4
2.0
1.6
1.3
1.1
5.5
15.7
8.6
5.5
3.5
2.7
2.2
1.7
1.4
1.2
6
17.1
9.4
6.0
3.8
2.9
2.4
1.9
1.6
1.3
6.5
18.5
10.2
6.5
4.1
3.2
2.6
2.0
1.7
1.5
7
19.9
11.0
7.0
4.5
3.4
2.8
2.2
1.8
1.6
7.5
21.3
11.8
7.5
4.8
3.7
3.0
2.3
1.9
1.7
8
22.8
12.6
8.0
5.1
3.9
3.2
2.5
2.1
1.8
8.5
24.2
13.3
8.5
5.4
4.2
3.5
2.7
2.2
1.9
9
25.6
14.1
9.0
5.7
4.4
3.7
2.8
2.3
2.0
9.5
27.0
14.9
9.5
6.1
4.7
3.9
3.0
2.5
2.1
10
28.5
15.7
10.0
6.4
4.9
4.1
3.1
2.6
2.2
12
34.2
18.8
12.0
7.6
5.9
4.9
3.7
3.1
2.7
14
39.9
22.0
14.0
8.9
6.9
5.7
4.4
3.6
3.1
16
45.5
25.1
16.0
10.2
7.8
6.5
5.0
4.1
3.6
18
28.2
18.0
11.5
8.8
7.3
5.6
4.7
4.0
20
31.4
20.0
12.7
9.8
8.1
6.2
5.2
4.5
22
34.5
22.0
14.0
10.8
8.9
6.9
5.7
4.9
24
37.7
24.0
15.3
11.8
9.7
7.5
6.2
5.4
26
40.8
26.0
16.6
12.7
10.6
8.1
6.7
5.8
28
43.9
28.0
17.8
13.7
11.4
8.7
7.2
6.3
30
47.1
30.0
19.1
14.7
12.2
9.4
7.8
6.7
35
35.0
22.3
17.1
14.2
10.9
9.1
7.8
40
40.0
25.5
19.6
16.2
12.5
10.4
9.0
45
45.0
28.7
22.0
18.3
14.0
11.6
10.1
50
31.9
24.5
20.3
15.6
12.9
11.2
55
35.1
26.9
22.3
17.2
14.2
12.3
60
38.2
29.4
24.4
18.7
15.5
13.4
65
41.4
31.8
26.4
20.3
16.8
14.6
70
44.6
34.3
28.4
21.8
18.1
15.7
75
47.8
36.7
30.5
23.4
19.4
16.8
85
41.6
34.5
26.5
22.0
19.0
95
46.5
38.6
29.6
24.6
21.3
105
42.6
32.8
27.2
23.5