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H2O BOILER
HC SERIES IOM Manual
3.4
Boiler Capacity and recovery rate
Determining What Boiler Capacity You Need
To determine the correct
H2O BOILER
for your application, follow these simple steps:
Locate the temperature difference (∆T) required by your system at the top of the table.
Moving down the chart, select the GPM flow rate closest to that you require.
From that point, select the boilers appropriate for your chart position from the column on
the left.
The pressure drop (PSI) is also shown in Table 7 based on the selected flow rate.
Note: This chart provides approximate values for estimation purposes; conditional safety factors
and application specifics may affect boiler requirements.
Table 7: HC Series boiler capacity selection (safety factor of 25% already included)
HC
Model
Temperature Difference (
°
F)
20
30
40
50
60
70
80
90
100
110
120
130
600
Flow (GPM)
43
29
21
17
14
12
11
10
9
Press. Drop (PSI)
1
0.5
0.3
0.2
0.2
0.1
0.1
0.1
0.1
1000
Flow (GPM)
71
47
36
29
24
20
18
16
14
Press. Drop (PSI)
1
0.5
0.3
0.2
0.2
0.1
0.1
0.1
0.1
1500
Flow (GPM)
107
71
53
43
36
31
27
24
21
20
Press. Drop (PSI)
1
0.4
0.3
0.2
0.1
0.1
0.1
0.1
0.1
0.1
2000
Flow (GPM)
143
95
71
57
47
41
36
32
29
26
24
Press. Drop (PSI)
1.1
0.6
0.3
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
2500
Flow (GPM)
178
119
89
71
59
51
45
40
36
32
30
27
Press. Drop (PSI)
1.3
1
0.4
0.3
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Figure 12: HC Series Water Pressure Drop
D-VAC Sales Inc. Email: dmann@dvachvac.com Tel: (516) 256-3131 www.dvachvac.com
