PART I: SPECIFICATIONS
6
Burner model identification
Burners are identified by burner type and model. Burner model identification is described as follows.
Fuel
The burner technical specifications, described in this manual, refer to natural gas (calorific net value Hi = 9,45 kWh/Stm
3
, density ρ =
0,717 Kg/Stm
3
). 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.
For example, to obtain the flow and pressure values for the biogas:
Type G380A Model M-. PR. SR. *. A. 1. 65. EA.
(1) (2) (3) (4) (5) (6) (7) (8) (9)
1 BURNER TYPE G258A, G335A, G380A, G400A
2FUEL
B - Biogas,
M - Natural gas
L - LPG C - Town gas
3 OPERATION (Available versions) PR - Progressive, MD - Fully modulating
4 BLAST TUBE
SR = Standard blast tube + ABS polymer (silenced) air intake
LR = Extended blast tube + ABS polymer (silenced) air intake
5 DESTINATION COUNTRY
* - see data plate
6 BURNER VERSION
A - Standard
Y - Special
7
EQUIPMENT
0 = 2 gas valves
1 = 2 gas valves + gas proving system
7 = 2 gas valves + maximum gas pressure switch
8 = 2 gas valves + gas proving system + maximum gas pressure switch
8
GAS CONNECTION 50 = Rp2 65 = DN65
80 = DN80 100 = DN100
9 MICRO-PROCESSOR CONTROL
EA = micro-processor control, without inverter
EB = micro-processor control, with inverter
Fuel
Hi (KWh/Stm
3
) ρ (kg/Stm
3
)
f
Q
f
p
LPG 26,79 2,151 0,353 0,4
Town gas 4,88 0,6023 1,936 3,3
Biogas 6,395 1,1472 1,478 3,5
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.
Q
biogas
Q
naturalGas
1 478=
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