Burnham ALP080 Boiler User Manual


 
33
B. Piping System To Be Employed.
Alpine (ALP) boilers are designed to operate in a closed
loop pressurized system. Minimum pressure in the
boiler must be 12 PSI. Proper operation of the Alpine
(ALP) boiler requires that the water ow through the
boiler remain within the limits shown in Table 11, any
time the boiler is ring.
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 15.1 5.9 17.7 7.8 21.2 10.7 26.5 16.0
ALP399 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 specic Boiler Model from Tables 2A or 2B
Using boiler antifreeze will result in higher uid density and may require larger circulators.
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)
NOTICE
Failure to maintain the ow through boiler within
specied limits could result in erratic operation or
premature boiler failure.
1. Near boiler piping must isolate ALP boiler from
system piping via closely spaced tees to insure
specied ow range through boiler any time the
boiler is ring:
Table 11: Flow Range Requirement Through Boiler