Table 4-2
20 through 75 Ton Component Static Pressure Drops (Inches W.C.)
Evaporator Coil
CFM
High
Nom
STD
Std.
Capacity
Tons
AIR
Wet Dry Wet Dry Low High All KW's Low High Low High Fiber Effic. Mesh Prefilter Prefilter Curb Exh. Fan
4,000 .07 .05
.14 .10
6,000 .13 .10
.27 .20
20
8,000 .21 .16
.43 .32
9,000 .26 .20
.52 .39
10,000 .31 .23
.61 .46
12,000 .41 .31
.82 .63
5,000 .10 .07
.20 .15
6,000 .13 .10
.27 .20
7,500 .19 .15
.39 .29
25 10,000 .31 .23
.61 .46
11,000 .36 .27
.71 .54
12,500 .44 .34
.87 .67
14,000 .52 .40
1.05 .81
6,000 .15 .11
.20 .15
9,000 .29 .22
.39 .29
30 12,000 .46 .35
.61 .46
14,000 .59 .45
.78 .60
15,000 .65 .50
.87 .67
17,000 .80 .62
1.06 .82
8,000 .10 .07
.20 .15
10,000 .14 .11
.29 .21
12,000 .19 .14
.39 .29
40 16,000 .31 .23
.61 .46
17,000 .34 .26
.67 .51
20,000 .44 .34
.87 .67
22,000 .51 .39
1.02 .79
10,000 .17 .13
.23 .17
14,000 .29 .22
.39 .29
50/55 17,000 .39 .30
.53 .40
20,000 .51 .39
.68 .52
24,000 .69 .53
.91 .70
28,000 .88 .68
1.17 .91
12,000 .13 .10
.25 .18
16,000 .20 .16
.39 .29
60 20,000 .29 .23
.55 .42
24,000 .39 .31
.74 .57
28,000 .50 .39
.95 .73
30,000 .56 .44
1.06 .82
12,000 .20 .16
N/A N/A
16,000 .32 .26
N/A N/A
20,000 .46 .37
N/A N/A
22,000 .54 .43
N/A N/A
70 24,000 .62 .50
N/A N/A
26,000 .70 .56
N/A N/A
28,000 .79 .64
N/A N/A
31,000 .93 .75
N/A N/A
33,000 1.03 .83
N/A N/A
12,000 .25 .18
.31 .23
16,000 .39 .29
.49 .37
20,000 .55 .42
.69 .53
22,000 .65 .49
.81 .62
75 24,000 .74 .57
.93 .71
26,000 .84 .65
1.05 .81
28,000 .95 .73
1.19 .92
31,000 1.12 .87
1.40 1.08
33,000 1.24 .96
1.55 1.20
Heating System
SFHF/G
SEHF/G
SLHF/G
.02 N/A
.02
.05 .06
.05 .05
.04
.09 .12
.09 .09
.07
.15 .19
.12 .12
.09
.19 .24
.14 .15
.11
.23 .28
.20 .22
.17
.33 .40
.03 N/A
.03
.07 .09
—— .05
——
—— —— —— —— —— —— ——
.08 .08
.06
.14 .17
.14 .15
.11
.23 .28
.17 .18
.13
.29 .33
.22 .23
.18
.33 .42
.28 .29
.21
.41 .53
.05 .05
.04
.09 .12
.11 .12
.09
.19 .24
.20 .21
.16
.31 .39
.26 .29
.22
.40 .51
.30 .33
.25
.45 .57
.39 .42
.35
.58 .73
.09 N/A
.07
.09 .11
—— .11
——
—— —— —— —— —— ——
.20 .15
.16
.17 .22
.34 .26
.29
.28 .36
N/A .29
.32
.31 .39
N/A .41
.44
.42 .52
N/A .50
.53
.51 .63
.12 .10
.11
.13 .16
.26 .20
.22
.22 .28
.39 .29
.32
.31 .40
.58 .41
.44
.42 .52
.73 .58
.62
.48 .72
.99 .79
.84
.62 .98
.10 .08
.16
.10 .13
.18 .14
.29
.17 .21
.27 .21
.44
.24 .31
.40 .30
.62
.33 .42
.48 .33
.85
.44 .55
.62 .38
.98
.51 .63
.10 .08
.16
.10 .13
.18 .14
.29
.17 .21
.27 .21
.44
.24 .31
.33 .25
.53
.29 .37
.40 .30
.62
.33 .42
.47 .32
.73
.39 .49
.54 .33
.85
.44 .55
.60 .40
1.04
.49 .61
.65 .46
1.18
.52 .67
.10 .08
.16
.10 .13
.18 .14
.29
.17 .21
.27 .21
.44
.24 .31
.33 .25
.53
.29 .37
.40 .30
.62
.33 .42
.47 .32
.73
.39 .49
.54 .33
.85
.44 .55
.60 .40
1.04
.49 .61
.65 .46
1.18
.52 .67
76
Filters
Throwaway
Perm
SSHF/G
Std. High Wire
.02 .06
.03
.03
.01
.05 .12
.06
.06
.02
.10 .20
.09
.09
.03
.12 .22
.11
.11
.04
.15 .29
.13
.13
.05
.22 .42
.15
.15
.06
.04 .09
.05
.05
.02
.09 .18
.09
.09
.03
.15 .29
.13
.13
.05
.19 .35
.15
.15
.06
.24 .42
.19
.19
.08
.30 .53
.24
.24
.10
.05 .12
.04
.04
.01
.12 .22
.07
.17
.02
.22 .41
.11
.11
.04
.30 .50
.14
.14
.06
.33 .52
.16
.16
.07
.42 .67
.21
.21
.09
.05 .11
.04
.04
.02
——
.11 .21
.08
.08
.03
.20 .36
.12
.12
.05
.22 .41
.13
.13
.06
.30 .51
.17
.17
.08
.36 .62
.21
.21
.10
.07 .15
.04
.04
.01
.15 .28
.07
.07
.03
.22 .41
.10
.10
.04
.30 .51
.12
.12
.05
.45 .75
.16
.16
.07
.61 .99
.20
.20
.10
.06 .11
.05
.05
.01
.11 .19
.07
.07
.02
.16 .27
.10
.10
.03
.22 .39
.11
.11
.04
.32 .50
.17
.17
.06
.37 .57
.20
.20
.07
.06 .11
.05
.05
.01
.11 .19
.07
.07
.02
.16 .27
.10
.10
.03
.19 .33
.12
.12
.04
.22 .39
.14
.14
.04
.27 .45
.16
.16
.05
.32 .50
.17
.17
.06
.39 .55
.21
.21
.07
.44 .60
.24
.24
.08
.06 .11
.05
.05
.01
.11 .19
.07
.07
.02
.16 .27
.10
.10
.03
.19 .33
.12
.12
.04
.22 .39
.14
.14
.04
.27 .45
.16
.16
.05
.32 .50
.17
.17
.06
.39 .55
.21
.21
.07
.44 .60
.24
.24
.08
Econ.
Bag
Cartridge Std With Or
And
And
Roof Without
.3
.24
.01
.03
.5
.44
.02
.06
.71
.68
.05
.12
.83
.81
.07
.15
.95
.95
.10
.19
1.19
1.26
.14
.27
.40
.34
.01
.03
.50
.44
——
——
.66
.62
.04
.10
.95
.95
.10
.19
1.06
1.11
.12
.23
1.29
1.34
.19
.30
——
——
.24
.39
.34
.26
.02
.06
.54
.48
.07
.15
.75
.75
.16
.27
.95
.95
.25
.39
1.03
1.06
.30
.43
1.20
1.30
.39
.59
.37
.31
.01
.03
.49
.43
——
——
.61
.56
.04
.07
.88
.87
.10
.09
.95
.95
.12
.11
1.17
1.22
.19
.17
——
——
.23
.20
.37
.30
.03
.05
.56
.50
.07
.08
.72
.68
.12
.11
.88
.88
.19
.17
1.11
1.17
.30
.23
——
——
.39
.30
.44
.37
.02
.07
.63
.58
.05
.10
.84
.82
.10
.16
1.06
1.08
.16
.23
——
——
.30
.30
——
——
.34
.34
.44
.37
.02
.07
.63
.58
.05
.10
.84
.82
.10
.16
.95
.95
.13
.20
1.06
1.08
.16
.23
1.17
1.23
.23
.26
1.22
1.29
.30
.30
——
——
.37
.36
——
——
.42
.40
.44
.37
.02
.07
.63
.58
.05
.10
.84
.82
.10
.16
.95
.95
.13
.20
1.06
1.08
.16
.23
1.17
1.23
.23
.26
1.22
1.29
.30
.30
——
——
.37
.36
——
——
.42
.40
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