Sheet 6131SML-7-1 page 2
4/5/6119, 4/5/6120, AND 4/5/6121 SERIES BURNERS For Firing Atlas Generators and neutral pressure boilers.
Method for closing off gas ports in Figure 4 is not identical to Figures 1, 2, and 3
Pipe Plug
Rectangular SST Cover
Forward Gas Ports
9 10
Radial Gas Ports
Rectangular SST Cover
8 9
8
11
7 8
7
10
6
9
6
7
5
Radial Gas Ports
7
6
4
5
Round SST Cover
5
Position No.
6
1
3
1
4
1
2
Forward Gas Ports
4
1
3 2
2
5
3 2
4 3
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 1.
Figure 2.
Atlas Boiler
Atlas
Gas Ports Closed Off
Atlas Boiler
Atlas
Gas Ports Closed Off
Burner
Forward
Radial
Burner
Forward
Radial
No. †
No. †
No.
Ports
Ports
No.
Ports
Ports
Tubes
2200 2250 2300 3200
6121-8.4-C7 6121-10.5-C5 6121-12.6-C16 6121-8.4-C11 6121-8.4-C71
2,3,4,6,8,9 2,3,4,6,8,9 2,3,4,6,8,9 2,3,4,6,8,9
2,3 2,3 2,3 2,3
1,5,7 1,5,7 1,5,7 1,5,7
All All All All All All All All All 7 All All All All All All All 7 All
None None None None None None None None None None None None None None None None None 5,6 None 5,6 6
220 230 240 250 260 270 350 360 250 260 270 280 350 360 380 390 2100 2125
6119-0.8-9 6119-1.3-2 6119-1.7-10 6119-2.1-5 6119-2.5-11 6119-2.9-8 4119-2.1-12 4119-2.5-13 6120-2.1-A15 6120-2.5-A16 6120-2.9-A17 6120-3.4-B5 6120-4.2-B3 6120-5.2-B6 6120-2.1-A18 6120-2.5-A19 6120-3.4-B8 6120-3.8-B9 6120-4.2-B10 6120-4.2-B11 6120-5.2-B12 6120-5.2-B13 6121-3.4-A27 6121-4.2-A28 6121-5.2-B29 6121-6.3-B6 6121-3.4-A31 6121-3.8-A32 6121-4.2-A33 6121-4.2-A34 6121-5.2-B35 6121-5.2-B36 6121-6.3-B9 6121-6.3-B14
3200X
2,3,7,8
2,3,5,7,8
plugs 1,4,5,6,9
3250
6121-10.5-C12
2,3,4,6,8,9
2,3
1,5,7
Figure 3.
Atlas Boiler No. † 2350 2400 3300 3350 3400
Atlas
Gas Ports Closed Off
Burner
Forward
Radial
No.
Ports
Ports
2,3 2,3 2,3 2,3 2,3
2,3 2,3 2,3 2,3 2,3
6121-14.7-D17 6121-16.8-D18 6121-12.6-D20 6121-14.7-D21 6121-16.8-D22
3100
Figure 4.
3100X
None‡
Atlas Boiler
Atlas
Gas Ports Closed Off
3125
2 to 6 (inc.) 1 to 6 tubes §
Burner
Forward
Radial
3125X
2,4,5,6
No. †
No.
Ports
Ports
280
All All
5,6
2100 2125 2150
6
3,4 3,4 3,4 3,4 3,4 3,4
3,4 3,4 3,4 3,4 3,4 3,4
2500 2600 2700 3500 3600 3700
6121-21.0-E23 6121-25.2-E24 6121-29.4-FA68 6121-21.0-E25 6121-25.2-E26 6121-29.4-FA67
2,4,6 2,4,6
2,4,6 2,4,6
380 390
All All All All
5,6
None None None 2,4,6 2,4,6 2,4,6 None
3100
3100X
3125
2,4,6 2,4,6 2,4,6
† All boiler numbers with prefix 2 refer to any 2-pass boiler with neutral firebox pressure. ‡ Tubes assembled in all ports. § Bush holes 3⁄8 " to ¼ " IPS and install R590-6125S tubes. Orifice Plugs #11-13394-1.
3125X
3150
3150X
1,2,3,7 tubes 4,5,6 plugs
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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