Complete with Flanged Gas Inlet
The XNM Series Excess Air Burners are intermediate flame length, nozzle mixing types designed for 800% excess air. A unique design and stepped tunnel burner blocks produce excellent flame stability at all firing rates. New air-gas mixing principles produce very high excess air combustion without appreciable fumes at lower equipment costs. All sizes develop maximum ratings with 6 oz air pressure and 2-1/2 oz gas pressure at the burners. All XNM burners have inconel flame distributors and high temperature refractory blocks. Gas adjustor and flanged connections are standard. Pipe unions are not normally required. The integral mounting flange is designed for sealed firing in positive, neutral, or negative combustion chambers. When ordering, add a subscript to number to indicate type of burner block holder and refractory required.
With Standard Refractory less Jacket 3000°F
With Hi-Temp. Refractory less Jacket 3300°F
With Alloy Jacket & Std. Refractory 3000°F
With Alloy Jacket & Hi-Temp. Refractory 3300°F
With Short Alloy Jacket & Standard Refractory 3000°F
With Short Alloy Jacket & Hi-Temp. Refractory 3300°F
FEATURES
500% - 800% excess air
Preheated air up to 750°
Excellent flame stability with: Excess Air. Excess Gas and On Ratio Firing
Instant lighting at all firing ranges
High discharge velocities
Low air and gas pressures required
Unique stepped tunnel design
Operation to 2500°
Rugged, heavy-duty industrial construction
Burner ports for pilot, flame monitoring, and sighting (sight glass not included)
Intermediate flame length
Max. capacities: 200,000 to 6,000,000 BTU/hr
APPLICATIONS
Annealing Furnaces
Air Heaters
Heat Treat Furnaces
Spheroidizing Units
Metal Melters
Incinerators
Stress Relieving Furnaces
Brick Kilns
Plate Heating
Sand Drying
Pebble Heaters
Crucible Heating
Multiple Purpose Furnaces
CAPACITY TABLE
Model No.
Excess Air Operation
On Ratio Operation
1000's BTU/hr @ Various Air Pressures
Air Flow SCFH
Gas Flow SCFH
Max.
Min.
1/4 oz
3/4 oz
2-1/2 oz
4 oz
6 oz
10XNM
2,500
250
28
55
80
160
210
250
12XNM
3,500
350
39
80
110
220
290
350
16XNM
7,000
700
78
150
220
440
570
700
20XNM
10,000
1000
110
220
320
630
830
1000
24XNM
15,000
1500
167
330
480
960
1250
1500
32XNM
30,000
3000
333
660
960
1920
2500
3000
48XNM
60,000
6000
667
1320
1920
3840
5000
6000
Note
Air pressure of burner 6 oz and gas pressure 2.5 oz to develop maximum ratings either excess air or "on-ratio."