Table 7—Fitler Pressure Drop (in. wg)-English
FILTER SIZE
(IN.)
CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
20 X 20 X 1
0.05 0.07 0.08 0.10 0.12 0.13 0.14 0.15
—
—
—
—
—
—
—
—
—
—
—
20 X 24 X 1
—
—
—
—
0.09 0.10 0.11 0.13 0.14 0.15 0.16
—
—
—
—
—
—
—
—
24 X 30 X 1
—
—
—
—
—
—
—
0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18
Table 8—Filter Pressure Drop (Pa)-SI
FILTER SIZE
(MM)
L/S
236
283
330
378
425
472
519
566
614
661
707
755
802
850
896
944
991
1038
508 x 508
12.4
17.4
19.9
24.9
29.9
32.3
34.8
37.3
—
—
—
—
—
—
—
—
—
—
508 x 610
—
—
—
—
22.4
24.9
27.4
32.3
34.8
37.4
39.9
—
—
—
—
—
—
—
610 x 762
—
—
—
—
—
—
17.4
19.9
22.4
24.9
27.4
29.9
32.3
34.8
37.3
39.8
42.3
Table 9—Accessory Electric Heat Pressure Drop (in. wg)–ENGLISH
HEATER
KW
CFM
600
800
1000
1200
1400
1600
1800
2000
2200
3.5–12.1
0.030
0.033
0.037
0.042
0.047
0.052
0.060
0.067
0.075
Table 10—Accessory Electric Heat Pressure (Pa)–SI
HEATER
KW
L/S
283
378
472
569
661
755
850
944
1038
3.5–12.1
7.5
8.2
9.2
10.4
11.7
12.9
14.9
16.7
18.7
Table 11—Required Suction-Line Temperature (Metric)
SUPERHEAT
TEMP
(°C)
SUCTION PRESSURE AT SERVICE PORT (KPA)
424
443
463
483
503
524
546
568
591
0
1.7
2.8
3.9
5.0
6.1
7.2
8.3
9.4
10.6
1
2.8
3.9
5.0
6.1
7.2
8.3
9.4
10.6
11.7
2
3.9
5.0
6.1
7.2
8.3
9.4
10.6
11.7
12.8
3
5.0
6.1
7.2
8.3
9.4
10.6
11.7
12.8
13.9
4
6.1
7.2
8.3
9.4
10.6
11.7
12.8
13.9
15.0
6
7.2
8.3
9.4
10.6
11.7
12.8
13.9
15.0
16.1
7
8.3
9.4
10.6
11.7
12.8
13.9
15.0
16.1
17.2
8
9.4
10.6
11.7
12.8
13.9
15.0
16.1
17.2
18.3
9
10.6
11.7
12.8
13.9
15.0
16.1
17.2
18.3
19.4
10
11.7
12.8
13.9
15.0
16.1
17.2
18.3
19.4
20.6
11
12.8
13.9
15.0
16.1
17.2
18.3
19.4
20.6
21.7
12
13.9
15.0
16.1
17.2
18.3
19.4
20.6
21.7
22.8
13
15.0
16.1
17.2
18.3
19.4
20.6
21.7
22.8
23.9
14
16.1
17.2
18.3
19.4
20.6
21.7
22.8
23.9
25.0
15
16.7
17.8
18.9
20.0
21.1
22.2
23.3
24.4
25.6
16
17.2
18.3
19.4
20.6
21.7
22.8
23.9
25.0
26.1
17
18.3
19.4
20.6
21.7
22.8
23.9
25.0
26.1
27.2
18
19.4
20.6
21.7
22.8
23.9
25.0
26.1
27.2
28.3
19
20.6
21.7
22.8
23.9
25.0
26.1
27.2
28.3
29.4
20
21.7
22.8
23.9
25.0
26.1
27.2
28.3
29.4
30.6
21
22.8
23.9
25.0
26.1
27.2
28.3
29.4
30.6
31.7
22
23.9
25.0
26.1
27.2
28.3
29.4
30.6
31.7
32.8
18