Combustion Catalog | Fives North American

Features & Capacities | Quick Clean Burner

4419A/6419A UPDATED DESIGN

RATIO CONTROL and OPERATION The 4419 series burner fuel/air ratio can be controlled with a simple cross connected ratio regulator such as the North Ameri- can 7216 for gas or the 7052 Ratiotrol for fuel oil. Accurate fuel/ air flows can be determined by using 8697 Metering Orifices in the fuel gas and air lines . If furnace temperatures after shutdown rise above 1600°F, pass air through burner to prevent overheating. CONSTRUCTION The burner body, backplate and flanges are made from steel, and the body tubes and flame stabilizer from stainless steel. The gas inlet coupling can be rotated independently of the air connection in 45° increments to aid in gas piping. DUAL FUEL OPTION and OPERATION The North American 6419 series is the dual fuel version of the Quick Clean burner for firing #2 fuel oil or fuel gas. The fuel gas only 4419 Series Quick Clean burner can be easily converted to a 6419 Series in the field by adding an atomizer and an 1813 Sensitrol™ Oil Valve. When operating with #2 fuel oil, the atomizer should be oper- ated with a constant 35"w.c. air pressure. During gas operation, use at least 4 osi atomizing air to cool atomizer (full atomizing air may be used); or for extended periods of operation on gas, the atomizer can be partially retracted or completely removed and stored: Use a blanking disk and gasket to seal the burner if the atomizer is removed (see page 7). Use the stop collar on the atomizer assembly to return the atomizer to the correct position when reinstalling the atomizer.

4419 series burners built after mid 2020 have an updated design and are designated as 4419A/6419A. Several parts have been simplified, but all the input connection dimensions and capacities are the same as the previous design. The updated parts include: — Inner and outer body tubes combined into one assembly — UV swivel mounting plate — 14 mm igniter with single electrode — Replaceable igniter ground rod assembly — Relocated body air pressure tap

Mounting Diagram

refractory wall

anchors

14" (max. recessed into wall)

8" (short side)

burner tunnel

mounting fl ange (optional)

Oil Atomizer Pressure/Flow Data Atom. Air Oil Flow Oil Press. at 35"w.c. gal/hr psi scfh 28 5.9 255 26 5.4 280 24 4.8 285 22 4.3 320 20 3.9 345 18 3.3 360 16 2.9 370 14 2.4 385 12 2.1 395 10 1.8 410 8 1.5 420 6 1.3 435 5 1.1 435 4 1.0 445 3 0.9 450 2 0.8 460 1 0.65 470

Main Air Capacity (scfh) at various Air Pressures "w.c.

Natural Gas Pressure at

Burner Size 4419A-6-A 4419A-6-B 4419A-7-A 4419A-7-B

0.9

1.7

7.0

15.6

27.7

27.7"w.c., 10% XSA

1,400 2,700 3,800 7,200

1,950 3,800 6,700 8,150

5,350 7,600

8,300

11,000 16,000 26,300 36,000

5.9"w.c. 10.4"w.c. 9.2"w.c. 12.3"w.c.

10,750 16,250 24,500

11,320 15,800

% Excess

%Excess Fuel

Flame Length

Air Limits for Gas and (#2 Oil)

Limits, Gas and (Oil)

Gas and (Oil) Feet

Burner Size 4419A-6-A 4419A-6-B 4419A-7-A 4419A-7-B

27.7"w.c.

27.7"w.c. Air P. 10% XSA

600 (100) 400 (100) 600 (100) 800 (100)

30 (30) 0 (30) 20 (30) 15 (30)

4 (4) 4 (5) 5 (6) 6 (6)

4419/6419 Minimum Natural gas flow (cfh) for lighting at low fire

Burner Air Pressure

-6-A

-6-B

-7-A

-7-B 100

1.7"w.c. 0.4"w.c.

40 20

60 35

80 50

75

Bulletin 4419 Page 3

4419 and 4419A burners have the same capacity and performance.

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