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103448-02 - 6/13
Boiler
Model
Boiler
Supply
Connection,
inch, FPT
Boiler
return
Connection,
inch, FPT
Minimum
Required
Flow (gPM)
@ 35°F
D
T
Boiler
Head Loss,
Ft.
@ 35°F
D
T
Required
Flow,
(gPM)
@ 30°F
D
T
Boiler
Head Loss,
Ft.
@ 30°F
D
T
Required
Flow,
(gPM)
@ 25°F
D
T
Boiler
Head Loss,
Ft.
@ 25°F
D
T
Maximum
Required
Flow (gPM)
@ 20°F
D
T
Boiler
Head Loss,
Ft.
@ 20°F
D
T
ALP080B
1
1
4.2
4.8
4.9
6.4
5.8
8.9
7.3
13.4
ALP105B
1
1
5.5
7.0
6.4
9.3
7.7
12.8
9.6
19.1
ALP150B
1
1
7.9
5.2
9.2
6.6
11.0
8.9
13.8
12.7
ALP210B
1
1
11.1
5.4
12.9
7.1
15.5
9.8
19.4
14.4
ALP285B
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) x 1000/500 x
D
T
**
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 16: 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)
B
oi
ler
H
ea
d
L
os
s (
Fee
t)
Vi. Water Piping and Trim
B. Piping System To Be Employed (continued)
2.
Direct connection of Alpine (ALP) boiler to
heating system
, similar to a conventional boiler, is
NOT RECOMMENDED because:
a. The flow rate through system must be the same
as through boiler and fall within limits specified
in Table 16.
b. Pressure drop through entire system must be
known, added to pressure drop through boiler,
and, a circulator selected to provide required
flow at total calculated pressure drop.
c. It is often very difficult to accurately calculate
the pressure drop through the system.
d. In replacement installations, it may be nearly
impossible to get an accurate measurement of
piping amount and number of fittings in the
system. If system is zoned, the system flow rate
may drop well below recommended minimum
flow when only a single zone is calling for heat.
Содержание ALP080B
Страница 72: ...72 103448 02 6 13 VIII Electrical continued ...
Страница 73: ...103448 02 6 13 73 VIII Electrical continued Figure 43 Wiring Connections Diagram ...
Страница 75: ...103448 02 6 13 75 VIII Electrical continued Figure 44 Ladder Diagram ...
Страница 136: ...136 103448 02 6 13 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 1 888 432 8887 www usboiler net ...