Product Overview | 4465 Burner
The 4465 is a small, nozzle-mix, medium or high velocity, gas burner with a great deal of flexibility for use in many applications. Increased temperature unformity and decreased fuel usage are attained through the use of high velocity instead of excess air fi ring. The 4465's low capacity rating is ideal for most roller hearth kilns. Its 11½" tile length is perfect for the typical 12" linings for these kilns. An optional "short" model is available with a mounting adapter for 9" thick kiln walls. The 6¼" square mounting plate allows it to fit most furnaces, even when multiple hearths are used. The small diameter of the self-supporting tile makes it ideal for retrofitting old furnaces. Two burner tile configurations per size make it equally adaptable to narrow or wide kilns. This allows selection of the optimum velocity for the application, without having to use a larger burner and de-rate it. The optimized velocity provides improved recirculation of kiln gases, which increases product uniformity and reduces thermal stress on the rollers. Although the 4465 burner line was designed primarily for roller- hearth kilns, it can also be used on other types of kilns and furnaces. FEATURES — Two tile exit areas: for narrow or wide kiln applications — Rated for up to 2900 ° F operation — Flame rod or UV flame supervision capability — Wide operating flexibility to suit modulating, themal turndown, and StepFire™ (pulsed) control systems — Direct spark ignition — Tile material: self-supporting alumina/mullite — Built-in limiting orifice gas valve — Insertion lengths available for 9" or 12" wall thicknesses
GENERAL OPERATION and CONTROL Two Sizes: — 70,000 and 130,000 Btu/h HHV, at 16 osig air pressure.
— Combustion Air: 24 osig maximum air pressure.
— Fuel: Natural gas. Contact Fives North American Combustion, Inc. for LP-Gas and alternate fuel applications. — Flame Supervision: Flame rod or UV detector. Consult National Safety Standards and insurance underwriters for specific requirements for flame supervision. — Ignition: Direct spark (no pilot) w/6000 V (minimum) trans- formers. 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: A built-in limiting orifice valve is included for fuel adjustment. — Relight: 4465 burners require spark re-ignition since they will not relight off a hot tile or furnace. A trip delay device is recommended on automatic shutoff valves to avoid the need to relight after a momentary power interruption.
4465 Burners are available with either "H" (high) or "M" (medium) velocity round tiles. High velocity tiles are used on wide kilns; medium velocity tiles on narrow kilns.
4465 Performance Data
Burner Size
-0
-1
Air Flow, not burning at 16 osig (scfh) Air Flow, Stoic at 16 osig (scfh)*
775 700
1450 1300
Max. % XSA (ignition and flame rod/UV limit) 500
500
Max. % XSF (ignition and flame rod/UV limit)
30
30
Flame Length (in.), Stoic at 16 osig air Flame Diameter (in.), Stoic at 16 osig air Gas Pressure (osig), Stoic at 16 osig air
8 2
12
3
9.0
9.0
Bulletin 4465 Page 2
* Nominal capacities. Actual capacities may vary based on burner tile selection.
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