Bulletin 4832 Page 2
Burner backplate
Table 1. Recommended Pilots and Igniters
UV Flame detector
Spark Ignited Pilot Tip 4021-12 4021-12 4021-12 4021-12 4021-12 4021-12 4021-12 4021-12
Direct Spark
Burner
Igniters
Clockwise air spin (factory setting)
designation
4055
4051
-C -C -C -B -B -B -B -B
4832-2 4832-3 4832-4 4832-5 4832-6 4832-7
-C -C -C -B -B -B -B -B
Pilot
Observation Port
4832-8-A 4832-8-B
Figure 1. Proper ignition/flame detector placement
BURNER PLACEMENT/FLAME DIAMETERS Instructions 4832-2 lists suggested burner spacing and flame diameters/depths for all types of Flat Flame™ Burners. These figures are general guidelines only. Burner placement is also a function of furnace volume, input required per unit volume, and other factors.
Table 2. Capacities, Limits, Excess Air
Combustion air in scfh (for Btu/h HHV, multiply by 100)
Max. % excess air
Burner
Air pressure drop across the burner in osi
without pilot
designation
1
4
9
16
4
8
12
16
4832-2 4832-3 4832-4 4832-5 4832-6 4832-7
585 885
1 170 1 770 2 900 4 740
1 740 2 640 4 330 7 050 11 170
2 340 400 300 250
150
3 540 290 190 150 100
1 450 2 370 3 710 6 550 11 000 16 500
5 800 250 220 150
140
9 500 250 250 250 300 14 800 500 500 500 500 26 200 500 500 300 280
7 430 13 080 22 000 33 000
19 650 33 000 49 360
4832-8-A 4832-8-B
44 000 180 66 000 120
130 110
80 35
75
55
IGNITION AND FLAME SUPERVISION The burners can be satisfactorily ignited by either a pilot or a direct spark igniter. See Table 1. Interrupted pilot operation is mandatory when burners are monitored by flame detectors. A 4011-12 pilot set is recommended for individual burner ignition. When multiple burners share a single pilot pre-mix header, a 4021-12 pilot tip per burner with an appropriately sized air/gas mixer is recommended. 4832 burners are supervised by UV flame detectors. Note: To monitor pilots, flame detectors must be downstream of pilots relative to the direction of flame spin (clockwise as viewed from rear of burner as shipped). See Figure 1. Low NOx By their design the 4832 Flat Flame Burners are inherently low NOx. However, emission levels will vary from one application to another. Consult factory for information relating to your operating conditions.
For burner dimensions, refer to Dimensions 4832.
Table 3. Gas Pressure Requirements (for stoichiometric operation at 16 osi air pressure)
Burner
Gas pressure*
designation
("w.c.)
4832-2 4832-3 4832-4 4832-5 4832-6 4832-7
0 0 0 0 0
2.0
4832-8-A 4832-8-B
1.2 1.4
* Atmospheric (or negative) gas pressure is normal in the smaller burner sizes due to the open-ended gas tube and combustion air spin.
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
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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