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Low temperature burners - INDITHERM
®
www.maxoncorp.com
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