Page 2 Bulletin 1.1
Specifications and Capacities
Burner flame tube material choice
The grade of material is selected in accordance with the table as a function of application temperature. However, note that all medium and high velocity versions use only silicon carbide regardless of the application temperature.
Application
(LV) Alloy
(LV) Alloy
Siliconised Refractory
temperature (°C)
grade type grade type silicon carbide 321 310 (LVS/MVS)
Up to 800°C 800 < 1000°C
-
- -
- - -
-
1000 < 1400°C - 1400 < 1600°C -
- -
-
Capacities and specifications
Model No.
Nominal capacity (kW)
* Air inlet Pressure (mbar) @15°Cat nominal capacity
** Air Orifice Differential Pressure (mbar) @ 15°C at nominal capacity
*** Natural Gas inlet Pressure (mbar) @ 15°C at nominal capacity
Exit Velocity (m/s) at nominal capacity
Maximum capacity (kW)
Air inlet Pressure (mbar)@ 15°C at max. capacity
Air Orifice Differential
Gas pressure (mbar) at max capacity Natural Gas inlet Pressure (mbar) @ 15°C at max. capacity
Exit Velocity (m/s) at max. capacity
Pressure (mbar) @ 15°C at max. capacity
FRGLV 1B 29 FRGLV 2B 58 FRGLV 3B 87 FRG LV 4B 116 FRG LV 5B 232 FRG LV 6B 440 FRGMV 1B 29 FRGMV 2B 58 FRGMV 3B 87 FRG MV 4B 116 FRG MV 5B 232 FRG MV 6B 440
24 30 26 27 26 26 37 32 31 32 30 33
18 22 21 21 20 14 19 24 20 20 18 14
8 8
24 29 44 41 47 58 95 96 94 95 96 97
44 87
64 71 47 56 63 55 87 80 57 66 75 68
48 50 32 43 47 30 46 52 37 43 47 30
20 14 19 30 29 24 37 30 31 42 43 43
36 44 58 62 72 87
16 15 13 13 17 14 20 22 19 22
116 175 350 656
44 87
144 144 125 143 144 145
116 175 350 656
Notes: * For impulse firing systems a flow distributor can be employed in the gas feed pipe and gas pressures may be higher than shown here – reference should be made to Fives. ** Minimum required at the nominal rating – measured at the burner. The air pressure is the nominal static pressure measured upstream of the orifice plate. *** The differential air pressure is measured from a tapping, immediately upstream of the orifice plate located in the air inlet flange, and on the burner body. The heat release shown is based on natural gas nett CV 8320 kcal/nm 3.
Typical performance characteristics
Model No.
* Approx Flame lengths (mm)
** Nominal Excess Air Capacity (%)
*** Nominal Excess Gas Capacity (%)
FRGLV 1B FRGLV 2B FRGLV 3B FRGLV 4B FRGLV 5B FRGLV 6B FRGMV 1B FRGMV 2B FRGMV 3B FRGMV 4B FRGMV 5B FRGMV 6B
250 300 400 500 600 900 200 300 350 400 500 600
480 400 570
21 33 15 29 55 82 30 25 44 38 38 82
2200 2800 2150
300 650 980
2200 3200 2800
Notes: * Based on nominal burner capacity
** Based on air flow at nominal capacity with reduction in gas flow *** Based on air flow at nominal capacity with increase in gas flow
Fives North American Combustion UK, Ltd. Heath Mill Road, Wolverhampton WV5 8BD England Tel +44 (0) 1902 891200 Fax +44 (0) 1902 895552 1/2011 FRG
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