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Alpine boiler head loss vs. flow, Notice, Flow rate (gpm) boiler head loss (feet) – Burnham ALP150 User Manual

Page 33

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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 flow through the
boiler remain within the limits shown in Table 11, any

time the boiler is firing.

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 specific Boiler Model from Tables 2A or 2B
Using boiler antifreeze will result in higher fluid 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 flow through boiler within

specified 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

specified flow range through boiler any time the

boiler is firing:

Table 11: Flow Range Requirement Through Boiler

This manual is related to the following products: