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Table PD-2 – Model S Unit Heater Hot Water Capacities – 60°F Ent. Air Temp. Hot Water with Turbulators and 132 Fin Series
(Conversion Factors in Table SP-11 Apply Only to 200 F Entering Water Temperature Columns)
Water
180 F
Unit
Temp.
Size
Drop °F MBH GPM
5
13.2
5.45
98.7
20-W2
10
11.5
2.36
93.6
CFM 315
15
9.7
1.34
88.5
RPM 1075
20
8.0
.82 83.4
HP 1/50
25
6.3
.52
78.3
30
—
—
5
28.4 11.71 110.9
38-W2
10
26.3
5.42 107 .2
CFM 514
15
24.2
3.33 103.4
RPM 1550
20
22.1 2.28 99.7
HP 1/20
25
20.0
1.65
95.9
30
17 .9
1.23
92.2
5
28.8 11.89 110.2
10
26.7
5.51 106.5
42-W2
15
24.6
3.38 102.8
CFM 530
20
22.5 2.32 99.1
RPM 1550
25
20.4
1.68
95.4
HP 1/20
30
18.2
1.25
91.7
40
14.0
.72
84.3
10
40.4
8.33 109.3
15
38.0
5.22 106.4
60-W2
20
35.6 3.67 103.4
CFM 755
25
33.1
2.73 100.5
RPM 1550
30
30.7
2.11
97 .5
HP 1/20
40
25.9
1.33
91.6
50
21.1
.87
85.7
10
46.3
9.54 102.5
15
43.6
5.99 100.0
70-W2
20
40.8 4.21 97 .5
CFM 1004
25
38.1
3.14
95.0
RPM 1550
30
35.4
2.43
92.5
HP 1/8
40
30.0
1.54
87 .5
50
24.5
1.01
82.5
60
19.1
.65
77 .5
UH-PRC001-EN
Performance
Data
200 F
PD
PD
FT S.W.T. H.W.T.
MBH GPM
.46
.56
15.7
6.47 106.0
.11
.14
14.0
2.88 100.9
.04
.05
12.2
1.68
95.8
.02
.02
10.5 1.08 90.7
.01
.01
8.7
.72
85.6
—
—
—
7 .0
.48
80.5
2.70
3.22
33.5 13.80 120.0
.75
.89
31.4
6.47 116.3
.33
.40
29.3
4.03 112.5
.18
.21
27 .2 2.80 108.8
.11
.13
25.1
2.07 105.0
.07
.08
23.0
1.58 101.3
2.77
3.31
34.0 14.02 119.1
.77
.92
31.9
6.57 115.4
.34
.41
29.8
4.09 111.8
.18
.22
27 .6 2.85 108.1
.11
.13
25.5
2.10 104.4
.07
.08
23.4
1.61 100.7
.03
.03
19.2
.99
93.3
2.10
2.50
47 .9
9.88 118.5
.97
1.16
45.5
6.25 115.6
.54
.65
43.1 4.44 112.6
.34
.40
40.7
3.35 109.7
.22
.26
38.3
2.63 106.7
.10
.13
33.4
1.72 100.8
.05
.06
28.6
1.18
94.9
2.63
3.14
54.9 11.32 110.4
1.22
1.45
52.2
7 .17 107 .9
.68
.82
49.5 5.10 105.4
.42
.51
46.7
3.85 102.9
.28
.33
44.0
3.02 100.4
.13
.16
38.6
1.99
95.4
.07
.08
33.1
1.37
90.4
.03
.04
27 .7
.95
85.4
Entering Water Temperature
220 F
PD
PD
FT S.W.T. H.W.T
MBH GPM
.66
.72
18.2
7 .50 113.2
.15
.18
16.5
3.39 108.2
.06
.07
14.7
2.02 103.1
.03
.04
13.0 1.34 98.0
.01
.02
11.2
.93
92.9
.01
.01
9.5
.65
87 .8.
3.41
4.07
38.6 15.89 129.1
.96
1.15
36.5
7 .52 125.4
.44
.52
34.4
4.72 121.6
.24
.28
32.3 3.33 117 .9
.14
.17
30.2
2.49 114.1
.09
.11
28.1
1.93 110.4
3.50
4.18
39.2 16.14 128.1
.99
1.18
37 .0
7 .63 124.4
.45
.53
34.9
4.80 120.7
.24
.29
32.8 3.38 117 .0
.15
.18
30.7
2.53 113.4
.10
.11
28.6
1.96 109.7
.04
.05
24.3
1.25 102.3
2.66
3.17
55.5 11.43 127 .7
1.24
1.48
53.1
7 .29 124.8
.71
.84
50.6 5.22 121.8
.44
.53
48.2
3.98 118.9
.30
.36
45.8
3.15 115.9
.15
.18
41.0
2.11 110.0
.08
.10
36.1
1.49 104.1
3.33
3.98
63.5 13.10 118.3
1.56
1.86
60.8
8.36 115.8
.89 1.06
58.1 5.99 113.3 1.13 1.35
.56
.67
55.4
4.56 110.8
.38
.45
52.6
3.62 108.3
.19
.23
47 .2
2.43 103.3
.10
.12
41.8
1.72
98.3
.06
.07
36.3
1.25
93.3
240 F
PD
PD
FT S.W.T . H.W.T
MBH GPM
.75
.90
20.7
8.53 120.5
.20
.23
18.9
3.91 115.4
.08
.10
17 .2
2.36 110.4
.04
.05
15.5 1.59 105.3
.02
.03
13.7
1.13 100.2
.01
.01
12.0
.82
95.1
4.21
5.03
43.6 17 .99 138.3
1.20
1.43
41.6
8.56 134.5
.55
.66
39.5
5.42 130.8
.31
.37
37.4 3.85 127.0
.19
.23
35.3
2.91 123.2
.13
.15
33.2
2.28 119.5
4.32
5.16
44.3 18.27 137 .1
1.23
1.47
42.2
8.70 133.4
.57
.68
40.1
5.51 129.7
.32
.38
38.0 3.91 126.0
.20
.23
35.8
2.95 122.3
.13
.15
33.7
2.32 118.6
.06
.07
29.5
1.52 111.3
3.30
3.94
63.0 12.99 136.9
1.56
1.86
60.6
8.33 134.0
.90 1.07
58.2 6.00 131.0 1.10 1.31
.57
.68
55.8
4.60 128.1
.39
.46
53.3
3.67 125.1
.20
.24
48.5
2.50 119.2
.11
.14
43.7
1.80 113.3
4.14
4.94
72.2 14.87 126.2
1.96
2.34
69.4
9.54 123.7
66.7 6.88 121.2 1.38 1.65
.72
.86
64.0
5.28 118.7
.49
.59
61.3
4.21 116.2
.26
.31
55.8
2.88 111.2
.15
.17
50.4
2.08 106.2
.09
.10
44.9
1.54 101.3
PD
PD
FT S.W.T . H.W.T .
.91
1.08
.24
.29
.10
.12
.05
.06
.03
.04
.02
.02
5.05
6.03
1.45
1.74
.68
.81
.38
.46
.24
.29
.16
.19
5.18
6.19
1.49
1.78
.70
.83
.39
.47
.25
.29
.17
.20
.08
.10
3.97
4.73
1.89
2.26
.71
.85
.49
.58
.26
.31
.15
.18
4.97
5.94
2.38
2.84
.89
1.06
.61
.73
.33
.39
.19
.23
.12
.14
27
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