Dimensions | 6422 Fire•All™
Bulletin 6422 Page 4
optional tile jacket
C B ‡ sq.
A - NPT Combustion Air inlet
9"
E
D sq.
NOTE: For 6422-8-A, air and gas connections cannot be piped in the same plane because the "flower pot" type air connection flange would interfere with the 2½" gas line .
Table IV. MAXIMUM EXCESS AIR RATES in % (without pilot)
CLEARANCE DIMENSIONS (for details, see Dimensions 6422)
GAS
OIL
Burner
dimensions in inches
Burner designation
Combustion Air pressure
1 osi 8 osi 14 osi Combustion Air pressure
designation
A
B ‡
C 5 5 5 5 5 7 7
D
E
1 osi
8 osi 14 osi
1 ¼ 1 ½
8 ½ 8 ½ 8 ½ 8 ½ 8 ½
12 12 12 12 12
13 5⁄8 13 5⁄8 13 5⁄8 13 5⁄8 13 5⁄8 17 7⁄8 17 7⁄8 17 7⁄8
6422-2 6422-3 6422-4 6422-5 6422-6
—
380
500
—
380 480 800 250 560 330 700 280
500 670 900 400 610 450 830 350
6422-2 6422-3 6422-4 6422-5 6422-6
330 560
1000 1560 1440 1000 4900 1450
1300 1560 1150 1400 1000 1600
210
2
480
2 ½
1070
50
3 4 4 6
380
140 160 150 200
6422-7-A 6422-7-B 6422-8-A
10 10 10
13 ½ 13 ½ 13 ½
6422-7-A 6422-7-B 6422-8-A
3200
900 460
7
660
400
14 osi atomizing air. It may be necessary to reduce atomizing air pressure to obtain maximum excess air.
‡ 6422- -L_ metal jackets add about 1" to tile OD.
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
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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