Dimensions | Flat Flame ™
Bulletin 4831 Page 3
OPERATING CHARACTERISTICS
air pressure drop across the burner in osi
Burner
Flame description
designation
1
4
6
8
12
16
Flame diameter, inches
4831-0 4831-1 4831-0 4831-1 4831-0 4831-1 4831-0 4831-1
6 8
7 8 2 2
7 9
8
8
12
12
Flame length (beyond tile), inches
2 ½ 2
1 ½
1 1
1 1
2
Maximum % XSAir, with constant pilot air
190 130
120 100
105
85 80 60 50
85 75 40 45
90
Maximum % XSAir, without constant pilot air
110
90 70
85 65
or direct spark
75
DIMENSIONS inches
4831- -T is Tile is tapered on twosides to 6 ¾" width at tile face.
¾" NPT
3⁄8 "
¾" NPT for Flame Detector or Observation Port
45°
30°
2"
2 7⁄8"
30°
3 5⁄8"
45°
7 ½" sq.
1
2 ¾"
A–NPT Combustion Air Inlet
3 5⁄8"
3⁄8" -16 NC Thr'd.
1⁄8" NPT Air Pressure Tap
1 ¾
1 29⁄32"
1"
B–NPT for Gas Inlet
3 21⁄32"
7 1⁄8" or 9 ¼"
With pilot and flame detector bosses in position shown, gas inlet can be positioned at either 6 or 9 o'clock positions.
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.
dimensions in inches
Burner
Recommended
Mixture pressure
Flame
Wt,
rod length
designation
A
B
pilot tip 4021-12 4021-12
lb
¾
½ ¾
3 ½ " 3 ½ "
4831-0 4831-1
0.8"wc 0.8"wc
44 44
1
With natural gas at 10:1 air/gas ratio. Flame is entirely within tile. From the outer boss of the flame rod connection.
To order, specify:4831-(code for pipe size)-tile length or style (7 for 7", 9 for 9", T for 9" Tapered) Burner Complete. Examples: 4831-0-9 ¾ " Burner Complete with 9" Tile 4831-0-T ¾ " Burner Complete with Tapered 9" Tile 4831-0-BO ¾ " Burner Only
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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