24
B004
CATEGORY II2H3+
Methane Gas
Liquid Butane Gas
Liquid Propane Gas
G20
G30
G31
Recommended Soft-light Pressure
(mbar)
5-5.5
17 - 18
18 - 19
The outlet pressure of the gas cock is obtained by completely loosening the
screw on the solenoid. The maximum pressure of the gas to the burner will be
equal to the nominal delivery pressure minus the head loss within the gas
valve.
4.
GAS ADJUSTMENTS
(1mbar = 10,197column of water)
CATEGORY II2H3+
Methane Gas
G20
Liquid Butane Gas
G30
Liquid Propane Gas
G31
4.1
Changing the Type of
Gas
The boiler can be converted to use either methane (natural) gas (G20) or
LPG (G30 - G31) by an Authorised Service Centre.
The operations that must be performed are the following:
1. Replace the jets on the main burner (see table in section 4);
2. Adjust the maximum and minimum thermal capacity values for the boiler
(see table in section 4);
3. Replace the gas rating plate;
4. Adjust the maximum thermal power setting;
Lower Wobbe Index (15°C;1013mbar)
MJ/m3h
45.67
80.58
70.69
Nominal Delivery Pressure
mbar
20
30
37
Minimum Delivery Pressure
mbar
17
20
25
27 RFFI System
Main Burner: n. 15 jets (ø)
1.25
0.72
0.72
Consumption (15°C; 1013mbar)
mc/h
3.16
----
----
Consumption (15°C; 1013mbar)
Kg/h
----
2.35
2.32
Gas Cock Outlet Pressure:
max - min
mbar
11.4-2.0
(*) - 5.0
(*) - 7.0
30 MFFI
Main Burner: n. 15 jets (ø)
1.30
0.77
0.77
Consumption (15°C; 1013mbar)
mc/h
3.49
----
----
Consumption (15°C; 1013mbar)
Kg/h
----
2.60
2.57
Gas Cock Outlet Pressure:
max - min
mbar
11.4-1.4
(*) - 4.1
(*) - 5.6
Summary of Contents for GENUS 27 RFFI SYSTEM
Page 16: ...16 B004 Aa GENUS 30 MFFI Aa GENUS 27 RFFI SYSTEM 024A 025A...
Page 17: ...17 B004 CN202 P GENUS 30 MFFI P GENUS 27 RFFI SYSTEM 026A 027A...
Page 29: ...User s Manual...
Page 30: ......
Page 46: ...18 B003 NOTES NOTES...
Page 47: ......
