Product Overview | 4445 & 4445N Tempest®
GENERAL OPERATION and CONTROL — 195,000 to 1,500,000 Btu/h (57 to 440 kW) HHV. 176,000 to 1,350,000 Btu/h (51.5 to 396 kW) HHV. — Combustion Air: 24 osi/41.5"w.c./103 mbar maximum air pressure (20 osi/34.6"w.c./86 mbar on -4-B, -5, and -6 burners) — Gas: Natural gas — Flame Supervision: Flame rod or UV detectors can be used but the performance varies depending on the number of fac- tors. With UV detectors the flame signal gets weaker as the length of the tile increases, and as the excess air rate is increased. With the long and extra long tiles the UV will not pick up a flame signal reliable with as high of an excess air rate as the short and medium length tiles. With a flame rod, the length of the tile does not affect the flame signal but a flame rod will not reliably sense high excess air flames as well as a UV on a short or medium tile. With long and extra long tiles, a flame rod will pick up flames over a wider excess air range than UV scanner.
TILE CHOICES Tile shapes and material that suit your specific needs. Materials "A" Tile — Alumina/Mullite tile for most applications up to 2900°F (1593°C) "M" Tile — Durable cast metal alloy tile for general applications up to 2000°F (1093°C) (sizes -2 through -4-B only). Exit Shapes "R" Round — for high penetration and maximum "drive". "S" Slotted — for narrow lane firing and better temperature uniformity (for "A"-alumina tile only). — Ignition: Direct spark (no pilot) w/6000 V (minimum) transformers. A halfwave transformer will prevent UV sensing of spark during trial for ignition. — Control: Applicable with all control systems -- StepFire™, on- ratio, and thermal turndown. NOTE: For best results, the limit- ing orifice valve must be mounted as close as possible to the gas connection. — Relight: Tempest® burners require spark re-ignition since high velocity burners will not relight off a hot tile or furnace.
ORDERING INFORMATION
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H
4445N -
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Burner Model
Insertion
Capacities scfh (Nm3/h) 16 osi/27.7"w.c. 69 mbar air pres.
Length
Depth Range
S = Short
9" to 12" (229 to 305 mm) 12" to 20" (305 to 508 mm) 12" to 30" (305 to 752 mm)
M = Medium
Air pipe size -2 = 1-1/4" -3 = 1-1/2"
L = Long
2065 (55) 3350 (90) 5800 (155) 7300 (195) 9200 (246) 14 400 (385)
E = Extra-long 12" to 40" (305 to 1016 mm) X = Special-Consult a North Americn Sales Representative for Special Length Burner options.
-4-A = 2" -4-B = 2"
-5 = 2-1/2"
Flame Supervision Requirement R = Flame Rod Supervision (flame rod included in burner assembly) U = U.V. Supervision (Detector must be ordered sepa- rately)
-6 = 3"
Tile Material A = Alumina/Mullite M = Metal alloy cast 330 SST (sizes -2 through -4-B only) Tile Exit Shape R = Round, for high penetration S = Slotted, for high entrainment
Tile Exit Size H = High Velocity Tile (standard)
[Note: Standard slot orientation is horizontal, with the air connection at 6 o'clock or 12 o'clock. Contact product manager if vertical slot orientation is desired.]
(not available with metal alloy tile)
Examples: 4445N-4-BASH-RL = -4-B Capacity 4445 Burner with an Alumina/Mulllite Slotted High Velocity Tile, with a Flame Rod and an Insertion Depth Range of 12" to 30" (305 to 762 mm). 4445N-2-MRH-UM = -2 Capacity 4445 Burner with a Metal Alloy Round High Velocity Tile, with "U" Flame Supervision Requirement and an Insertion Depth Range of 12" to 20" (305 to 508 mm) 4445N-5-ARH-RL = -5 Capacity 4445 Burner with an Alumina/Mullite Round High Velocity Tile, with a Flame Rod and an Insertion Depth Range of 12" to 30" (305 to 762 mm).
Bulletin 4445/4445N Page 9
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