Appendix b: flow conversion tables – Retrotec DucTester 200 Series Residential Applications User Manual
Page 71
Page 71 of 91
©Retrotec Inc. 2015
Appendix B: Flow Conversion Tables
Flow Conversion Table for Duct Test Pressure of 25 Pa
Table 10: Flow in CFM for various fan pressures, Retrotec Model 200 Fans, Duct Test Pressure: 25 Pa (relative to outdoors)
Flow AWAY or TOWARDS operator, both green and yellow tubes connected.
Fan Pressure
(Pa)
Open Mid Low
Fan Pressure
(Pa)
Open Mid Low
10
100
4.2
96
318
70
16
12
110
4.7
98
321
71
16
14
119
25
5.1
100
324
72
17
16
127
27
5.6
105
333
74
17
18
135
28
6.0
110
341
75
18
20
142
30
6.3
115
349
77
18
22
150
32
6.7
120
356
79
18
24
156
33
7.1
125
364
81
19
26
163
35
7.4
130
371
83
19
28
169
36
7.8
135
378
84
20
30
175
37
8.1
140
385
86
20
32
181
39
8.4
145
392
88
21
34
187
40
8.7
150
399
89
21
36
192
41
9.0
155
406
91
21
38
198
42
9.3
160
413
92
22
40
203
44
10
165
419
94
22
42
208
45
10
170
426
95
23
44
213
46
10
175
432
97
23
46
218
47
10
180
438
98
23
48
223
48
11
185
444
100
24
50
228
49
11
190
451
101
24
52
232
50
11
195
457
103
24
54
237
51
12
200
463
104
25
56
241
52
12
205
468
106
25
58
246
53
12
210
474
107
26
60
250
54
12
215
480
108
26
62
254
55
13
220
486
110
26
64
258
56
13
225
491
111
27
66
262
57
13
230
497
112
27
68
266
58
13
235
502
114
27
70
270
59
13
240
508
115
28
72
274
60
14
245
513
116
28
74
278
61
14
250
518
118
28
76
282
62
14
255
524
119
28
78
286
63
14
260
529
120
29
80
289
63
15
265
534
121
29
82
293
64
15
270
539
123
29
84
297
65
15
275
544
124
30
86
300
66
15
280
549
125
30
88
304
67
15
285
554
126
30
90
307
68
16
290
559
127
31
92
311
68
16
295
564
129
31
94
314
69
16
300
569
130
31