Burnham ALPINE - Page 43

43
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
ALP500 1½ 1½ 27.0 6.8 31.5 8.8 37.8 12.0 47.2 17.4
Notes: Required Flow (GPM) = ** Output (MBH) x 1000/500 x DT
** Output (MBH) - Select Value for specic Boiler Model from Tables 2A or 2B
Using boiler antifreeze will result in higher uid density and may require larger circulators.
Table 11: Flow Range Requirement Through Boiler
Alpine Boiler Head Loss vs. Flow
80
105
150
210
285
399
500
0
5
10
15
20
25
0 5 10 15 20 25 30 35 40 45 50
Flow Rate (GPM)
Boiler Head Loss (Feet)
VI. Water Piping and Trim (continued)