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GNA-2538 R0
41
Table 9.
BTU'S per Gauge Pressure (PSI) - Natural Gas Models (Approximate)
Model
Gas Manifold Pressure -PSI
Orifice
dia"
1
2
3
4
5
6
7
8
24"
0.219
380832
538578
659620
761664
851566
932844
1007587 1077156
0.313
777918
1100142 1347394 1555837 1739478 1905503 2058179 2200285
28"
0.219
380832
538578
659620
761664
851566
932844
1007587 1077156
0.375
1116626 1579148 1934054 1133253 2496853 2735165 2954316 3158297
Table 10.
Gauge Pressure (PSI) Required to Maintain Temperature Rise - Natural Gas Models (Approximate)
Heat Rise (F)
Model
Orifice Dia
Static
Pressure
in wc
50
60
70
80
90
100
110
120
130
140
150
160
7.5HP
24" dia
.219"
1
3
4
5
7
8
8
2
2
3
4
5
6
7
8
3
1
2
3
4
5
6
7
8
8
4
1
2
3
4
4
5
5
6
7
7
5
1
2
3
4
5
6
8
.313"
1
2
2
3
4
4
5
6
2
1
2
2
3
3
4
5
3
1
2
2
2
3
4
4
1
2
2
3
3
5
10HP
24" dia
.219"
1
4
6
7
8
8
2
3
4
5
7
8
8
3
3
4
5
6
7
8
8
4
2
3
4
5
6
8
8
5
1
2
2
3
3
4
5
6
7
8
.313"
1
1
2
2
3
3
4
4
5
6
7
2
1
2
2
3
3
3
4
5
6
3
1
1
2
2
2
3
3
4
5
4
1
1
2
2
3
3
4
5
1
1
2
2
3
15HP
28"dia
.219"
1
8
8
2
7
8
8
3
6
7
8
8
4
4
5
7
8
8
5
2
3
3
4
5
6
7
8
.375"
1
2
2
3
3
4
5
7
8
2
1
2
3
4
5
6
7
8
3
2
2
3
4
5
6
7
4
1
2
2
3
3
4
5
5
AXIAL FAN HEATER – LP AND NG-FIRED HEATER