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BURNERS FEATURES
Burner model identification
Burners are identified by burner type and model. Burner model identification is described as follows.
Type
HRX515-FGR Model
(1)
1
BURNER TYPE
2
FUEL
3
OPERATION (Available versions)
4
BLAST TUBE
5
DESTINATION COUNTRY
6
BURNER VERSION
7
EQUIPMENT
8
GAS CONNECTION
9
Low NO
x
Fuel
The burner technical specifications, described in this manual, refer to natural gas (calorific net value Hi = 9,45 kWh/Stm
3
0,717 Kg/Stm
). For different fuel such as LPG, town gas and biogas, multiply the values of flow and pressure by th corrective factors
shown in the table below.
Fuel
LPG
Town gas
Biogas
For example, to obtain the flow and pressure values for the biogas:
Q
=
Q
1 478
biogas
naturalGas
3 5
p
=
p
biogas
naturalGas
ATTENTION! The combustion head type and the settings depend on the fuel. The burner must be used only for its
intended purpose specified in the burner data plate .
ATTENTION! The corrective factors in the above table depend on the gas composition, so on the calorifc value
and the density of the gas. The above value can be taken only as reference.
PART I: SPECIFICATIONS
MG.
MD. S.
*.
(2)
(3)
(4)
(5)
HRX92R-FGR, HRX92-FGR, HRX512-FGR, HRX515-FGR, HRX520-FGR
MG - Natural gas-Light oil
PR - Progressive
MD - Fully modulating
S - Standard
* - see data plate
A - Standard
Y - Special
1 = 2 gas valves + gas proving system
8 = 2 gas valves + gas proving system + maximum gas pressure switch
50 = Rp2
80 = DN80
EF = Medium-large burners complete with electronic cam and
EG = Medium-large burners complete with electronic cam,
ER = Medium-large burners complete with electronic cam,
3
Hi (KWh/Stm
)
26,79
4,88
6,395
A.
1.
80.
(6)
(7)
(8)
65 = DN65
100 = DN100
temperature-compensated flue gas recirculation, without
O
monitoring, without inverter.
2
inverter and temperature-compensated flue gas
recirculation, without O
monitoring
2
inverter and temperature-compensated flue gas
recirculation, with O
monitornig
2
3
ρ (kg/Stm
)
2,151
0,6023
1,1472
5
PART I: SPECIFICATIONS
EF
(9)
f
Q
0,353
1,936
1,478
3
, density ρ =
f
p
0,4
3,3
3,5
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