Bul 4630 page 2
4630 SELECTION
1. Sketch (to scale) burner layout that will provide uniform tempera- ture distribution.
4. Select points at which air-gas mixture is to be fed into assembly:
A 2" end connection can handle up to 350 000 Btu/h HHV (at 4"w.c.).
2. Determine total burner length this layout requires by adding to- gether individual section lengths as indicated below. The "typical" assembly in the left photograph on Page 1 covers a 3' square area, using:
A 3" connection can handle 800 000 Btu/h HHV (4630-B, -H, -T, and -X have 3" connections).
(6) 4630-E (12") and (4) 4630-S (3") straight sections (2) 4630-T tee section (1) 4630-X cross section (1) 4630-P pilot section (3) 2" inlet flanges
If multiple inlet connections are required, locate them so they feed approximately equal burner lengths.
5. "Fill in" assembly with appropriate straight and elbow section, inlet flanges, end plates, etc. If multiple mixers are used, mixer zones must be separated within burner assembly--use either 4-1739-1 separator plates or 4-3159-1 expansion ignition couplings.
This results in 12' of total "burner length."
3. Divide total Btu/h HHV input requirement by total burner length.
Result will be Btu/h HHV per ft of 4630 Burner. Select appropriate burner capacity/drilling from Table I...at the 4"w.c. mixture pres- sure ratings shown, or higher or lower ratings if other mixture pressures are available (up to 12"w.c. maximum)--use the square root law or handbook tables for determining different ratings.
6. To avoid dangerous flashback, mixture manifolds should not exceed 4" pipe size.
4630 MAIN BURNER SECTIONS * Hardware Included
1 11⁄16 rad .
2 ¼
3⁄8 rad.
1 11⁄16 rad.
4 1⁄8 dia.
(3) 9⁄32 holes
3 fpt
3⁄8
3" for 4630-S, 9" for 4630-N, 12" for 4630-E
2
1 ¾
6
4630-E 12" (wt. 7 ½ lb)
4630-N 9" (wt. 5 ½ lb)
3⁄8
(3) 9⁄32 holes
4630-S 3" STRAIGHT (wt. 3 lb)
2
6
6
1 ¾
(3) 9⁄32 holes
4630-T tee with 3" Bottom Inlet Burner length: 18"
6
(wt. 15 lb)
4 1⁄8 dia.
1 11⁄16
3 fpt
4 1⁄8 dia.
1 11⁄16 rad.
3 fpt
6
2 ¼
3⁄8
(3) 9⁄32 holes 1 ¾
3⁄8
2 2 ¼
6
6
6
6
1 ¾
2
4630-X CROSS with 3" Bottom Inlet Burner length: 24"
(wt. 18 lb)
4630-B with 3" Bottom Inlet
(wt. 10 ½ lb)
1 ¾
2
1 11⁄16 rad . (3) 9⁄32 holes
1 11⁄16 rad. (3) 9⁄32 holes
3
4 1⁄8
3⁄8
3⁄8
1 ¾
2
3
2
6 3 fpt 4 1⁄8 4630-H STRAIGHT with 3" Side Inlet (wt. 10 ½ lb) 6
4630-L ELBOW Burner length: 6"
(wt. 5 ¼ lb)
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