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izing and layout of the gas manifold
hoose the gas manifold size to evenly supply gas to each of the
sections, using Table 3.3 and Figure 3.2.
Gas Pipe Sizing & Layout
able 3.3
AXI U
ANIFOLD
GAS INPUT
PIPE SIZE
( BTU/HR.)
(INCHES)
1.4
2.5
5.2
8.0
14.0
45.0
80.0
ote:
Maximum inputs shown for natural gas only. For propane,
multiply inputs by 1.5; for butane, multiply inputs by 1.7.
igure 3.2
Gas Manifold izing & Layout
Main
Pipe
Union
Gas
Gas Manifold
Pipe
Union
Pilot End Plate
Spark
Ignitor
Pilot
Gas
Flame
Rod
xample: A gas manifold is supplying gas to two 1-1/2" N.P.T. rear
inlets on a burner. ach of the rear inlets supplies a maximum of
2,000,000 Btu/hr.
Solution: The total fuel supplied is 2 x 2,000,000 = 4,000,000 Btu/hr.
Referring to Table 3.3, the choice for manifold size is 2-1/2"; the
choice for main gas pipe size is 2".
clipse AH-MA Air Heat Burner v2, Design Guide 160, 8/1/05
AXI U
GAS INPUT
( BTU/HR.)
1-1/2
0.3
2
0.6
2-1/2
1.1
3
3.2
4
6.6
6
13.0
8
20.0
Pipe
Union
Burner Body
AIN GAS
PIPE SIZE
(INCHES)
1/2
3/4
1
1-1/2
2
2-1/2
3
Burner
Feed Pipe
Plain
End Plate
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