Alpine boiler head loss vs. flow, Flow rate (gpm) boiler head loss (feet) – Burnham ALP080 User Manual
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Boiler
Model
Boiler
Supply
Connection,
Inch, FPT
Boiler
Return
Connection,
Inch, FPT
Minimum
Required Flow
(GPM)
@ 35°F DT
Boiler
Head Loss,
Ft.
@ 35°F DT
Required
Flow,
(GPM)
@ 30°F DT
Boiler
Head Loss,
Ft.
@ 30°F DT
Required
Flow,
(GPM)
@ 25°F
DT
Boiler
Head Loss,
Ft. @ 25°F
DT
Maximum
Required
Flow (GPM)
@ 20°F DT
Boiler
Head Loss,
Ft.
@ 20°F DT
ALP080
1
1
4.2
4.8
4.9
6.4
5.8
8.9
7.3
13.4
ALP105
1
1
5.5
7.0
6.4
9.3
7.7
12.8
9.6
19.1
ALP150
1
1
7.9
5.2
9.2
6.6
11.0
8.9
13.8
12.7
ALP210
1
1
11.1
5.4
12.9
7.1
15.5
9.8
19.4
14.4
ALP285
1¼
1¼
15.1
5.9
17.7
7.8
21.2
10.7
26.5
16.0
ALP399
1½
1½
21.5
6.1
25.1
7.9
30.2
10.8
37.7
15.9
Notes: Required Flow (GPM) = ** Output (MBH) * 1000 / 500 * DT
** Output (MBH) - Select Value for specific Boiler Model from Tables 2A or 2B
Using boiler antifreeze will result in higher fluid density and may require larger circulators.
Table 0: Flow Range Requirement Through Boiler
Alpine Boiler Head Loss vs. Flow
80
105
150
210
285
399
0
2
4
6
8
10
12
14
16
18
20
0
5
10
15
20
25
30
35
40
Flow Rate (GPM)
Boiler Head Loss (Feet)