Product Overview | 6795 Magna-Flame ™
— Broad stability range — Chambers up to 2200°F — Includes high pressure tip emulsion atomizer — Atomizer for light or heavy fuel oil FEATURES
IGNITION AND FLAME SUPERVISION .
Magna-Flame burners should be pilot ignited . Pilot ignition must occur at 1” w.c. main air pressure or less. Appropriate 4014 gas-boosted pilots (sold separately) are shown on the dimension table. Pilot operation must be interrupted to prevent overheating of the mounting. Self-checking UV scanners (sold separately) are recommended for flame supervision. See Bulletin 8832 for selection of UV adapters. It is possible for a UV scanner mounted on this burner to sight flame(s) of other burners in the same firing chamber. Consult Fives North American Combustion, Inc. for configuration guidance on multiple burner applications. CONTROL . The burner can be operated with a constant steam pressure, turning down the oil and air only. The maximum available turndown on stoichiometric ratio is about 3:1. If the steam is throttled with the oil and air, a turndown ratio of 5:1 is possible. Gas pressure required is approximately 0.6 times the air pressure. Burners are stable when running lean. The suggested maximum excess air is 50% at low fire and 150% at high fire, but these limits often can be exceeded under the proper conditions. INSTALLATION. The burner dœs not include a refractory tile. The shape shown on the dimension drawing (page 2) must be built into the combustion chamber wall. See Supplement DF-M1 for installation recommendations. REPLACEMENT AND SPARE PARTS. NOTE: In June, 2009, the 6795 burner was redesigned to change from a square mounting flange to round and replace the threaded gas connection with a flanged gas tee. When replacing burners, or ordering parts, please inform your sales professional of the complete part number, sales order and/or manufactured date. This information is stamped on a tag located on the burner back plate.
6795 MAGNA-FLAME™ DUAL-FUEL BURNERS
feature the same quiet combustion and large capacities at relatively low pressures as Series 4795 Magna-Flame™ Gas Burners. They have efficient "tip-emulsion" type oil atomizers for #2 or #6 fuel oil (heated to reduce its viscosity to 100 SSU). All sizes have provisions for gas pilots and ultraviolet flame supervision devices. Both the gas and oil flames are tile-stable over a wide range of air/fuel ratios. The burners can be used in cold sealed-in combustion chambers with light oil or gas. ATOMIZER. This burner is equipped with a Series 5643 "tip- emulsion" type atomizer. Oil and steam (or compressed air) are required at a minimum of 80 psig at the burner. The atomizers should be retracted (6") during gas only operation. (If low pressure air atomization is desired, see Supplement 6795-2.) "Maximum" steam and compressed air consumption rates are shown below. They are for a no-oil flow condition; actual usage will always be less--from 0.75 to 2.0 pounds of steam (or 17 to 44 scf air) per gallon of oil, depending on the quantity of oil being atomized. (Use these figures to determine cost of the atomizing medium. Use the "maximum" figures shown below to size piping.)
Bulletin 6795 page 2
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