Low temperature burners - INDITHERM
®
w w w . m a x o n c o r p . c o m
combustion systems for industry
MAXON reserves the right to alter specifications and data without prior notice.
© 2008 Copyright Maxon Corporation. All rights reserved.
1 - 2.3 -
6
E - m - 7/08
Specifications of INDITHERM
®
burners
[1] sg (specific gravity) = relative density to air (density air = 1.293 kg/Nm
3
.
[2] Back pressure = static pressure in the combustion chamber where the flame develops. Data in this table are given for 0 and 1.5 mbar back
pressure.Combustion air flow valid for all listed maximum capacities.
[3] Maximum capacity when firing at 3% vol. O
2
level in the flue gas.
[4] Minimum capacity without pilot gas. If lower minimum capacities are required, refer to chapter ‘minimum capacities’ in this section.
[5] With direct ignition (no pilot), start capacity should be equal or higher than the stated pilot capacity.
[6] Differential pressure measured between burner test connection and combustion chamber.
[7] Gas differential pressures for natural gas at burner inlet. This pressure should be available at burner inlet throughout the entire capacity
range.
[8] Differential pressure to be measured between burner test connection and combustion chamber.
[9] Flame lengths are derived from measured lab data. Actual flame lengths can differ slightly.
Typical burner data
Fuel: natural gas at 15° C with 10.9 kWh/Nm³ HHV - sg = 0.6
[1]
Combustion air: 15° C - 21 % O
2
- 50 % humidity - sg = 1.0
[1]
Stated pressures are indicative. Actual pressures are a function of air humidity, altitude, type of fuel, and gas quality.
Burner size & type
100
300
550
700
850
1100
1500
1800
back pressure
[2]
mbar
Max. capacity
[3]
kW
(HHV)
0
125
340
550
720
850
1050
1472
1800
1.5
110
285
500
675
775
880
1266
1693
Min. capacity [
4]
kW (HHV)
0- 1.5
5.0
6.0
10
15
15
25
25
25
Pilot capacity
[5]
kW (HHV)
0-1.5
7.5
10.0
15
25
25
40
40
40
Combustion air differential pres-
sure
[6]
mbar
0
6.5
4.5
6.4
7.9
9
5
6.4
13
1.5
5
3.2
5
7.3
7.5
3.5
4.7
11.5
Combustion air flow
m
3
/h
0
136
360
615
755
910
1100
1611
1850
1.5
119
304
545
728
831
920
1386
1740
Gas differential pressure at inlet
[7]
mbar
0
3.4
7.5
6.4
10.3
13.3
19.8
5.8
10
Gas differential pressure at test
connection
[8]
mbar
0
2.7
6.7
5.4
7.1
12
17.7
5.5
9.3
1.5
2.1
4.7
4.5
6.3
10
12.4
4
8.2
Flame length
[9]
m
0-1.5
1
1.2
2
2.1
2
2.3
2.6
3-4
