Gas Fired North American Flat Flame ™ Burners in Cold, Tight Furnaces
Sheet 4833-1
Series 4832/4836 Flat Flame Burners are good performers under excess air conditions for which they were designed thirty-five years ago. Their widespread use attests to that. Now times have changed--since the 1970's, fuel bills are considerably higher and the use of excess air is often restricted. 4832/4836 Burners are not stable in cold, tight furnaces, when operating on stoichiometric ratio, without the aid of constant or intermittent pilot (and that is not our recommendation from the point of view of flame supervision). 4833 (for cold air) and 4828 (for preheated combustion air up to 1000°F) are designed for use in cold, tight furnaces. We will keep 4832/4836 in the line for excess air jobs, since its excess air limits are higher than those for 4833 and 4828.
Burner
Air
Natural gas
designation
pressure
Rich limit
Lean limit
16 osi
50-70% Excess Air
—
4832-2, -3, -4
4832-5
2-16 osi†
10% Excess Gas 20% Excess Air
500% Excess Air
1 osi
4832-6
2-16 osi†
20% Excess Air 70% Excess Air
400% Excess Air
1 osi
4832-7
all rates
40 to 50% Excess Air
300% Excess Air
St'd 4836-8-A
16 osi
40% Excess Air
—
St'd 4836-8-B
16 osi
40% Excess Air
70% Excess Air at 16 osi to 500% Excess Air at 1 osi
4833-3§
all rates
15% Excess Fuel
80% Excess Air at 16 osi to 250% Excess Air at 0.5 osi
4833-4§
9-1 osi
15% Excess Fuel 15% Excess Fuel
100% Excess Air 50% Excess Air
16-24 osi
4833-5§
30-2 osi
15% Excess Fuel
100% Excess Air at 16-4 osi
4828-5 70°F air
16-0.2 osi
20% Excess Fuel
50% Excess Air‡
4828-6§
20-0.5 osi
20% Excess Fuel
50% Excess Air
70°F air Air is underlined for emphasis in those cases where the rich limit is on lean side of stoichiometric. We have built specials of most sizes of 4832's that will run on-ratio in a cold, tight furnace. The -2, -3, and -4 require a radial gas nozzle. The -8-A uses a secondary air connection. The -8-B stays lit but produces a flame that is 5 ½ ft. long. 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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