Gas Adjustments; Changing The Type Of - Ariston microGENUS HE 24 MFFI Installation And Servicing Instructions

4.

GAS ADJUSTMENTS

CATEGORY II2H3+
Lower Wobbe Index (15°C;1013mbar)
Nominal Delivery Pressure
Minimum Delivery Pressure
microGENUS HE 24 MFFI
Main Burner: n. 14 jets (ø)
Consumption (15°C; 1013mbar) max - min
Consumption (15°C; 1013mbar) max - min
Gas Burner Pressure
max - min
microGENUS HE 28 MFFI
Main Burner: n. 14 jets (ø)
Consumption (15°C; 1013mbar) max - min
Consumption (15°C; 1013mbar) max - min
Gas Burner Pressure
max - min
microGENUS HE 32 MFFI
Main Burner: n. 14 jets (ø)
Consumption (15°C; 1013mbar) max - min
Consumption (15°C; 1013mbar) max - min
Gas Burner Pressure
max - min
4.1 C
HANGING THE
The boiler can be converted to use either methane
(natural) gas (G20) or L.P.G. (G30 - G31) by a CORGI
registered Gas Engineer.
The operations that must be performed are the following:
1. Replace the jets on the main burner (see Table A);
2. Adjust the maximum and minimum thermal capacity
values for the boiler (Section 4.2 Adjusting the Gas
Pressures);
3. Adjust the maximum thermal power setting (Page 39
and T B 40);
ABLE
4. Adjust the soft-light feature (see Table opposite for
recommended pressure and Fig. 4.1 see page 39);
5. Adjust the ignition delay feature for the heating system
by adjusting the dip switch as indicated in Section 2.17
(F . 2.34). It can be turned on or off.
IG
MJ/m
mbar
mbar
mm
m
Kg/h
mbar
mm
m
Kg/h
mbar
mm
m
Kg/h
mbar
T G
YPE OF AS
Methane Gas
G20
3 h 45.67
20
20
1.30
3 /h 2.54 - 1.16
---
7.5 - 1.7
1.30
/h 2.96 - 1.27
3
---
9.5 - 1.8
1.30
3 /h 3.33 - 1.27
---
12.0 - 1.8
CATEGORY
II2H3+
Soft-light
Pressure (mbar)
24 kW Model
28 kW Model
32 kW Model
Liquid Butane Gas Liquid Propane Gas
G31
80.58
29
28
0.70
---
1.89 - 0.87
29.0 - 5.5
0.74
---
2.21 - 0.95
27.5 - 5.4
0.74
---
2.48 - 0.95
28.0 - 5.4
S L P
OFT IGHT RESSURES
Methane Liquid
Butane
Gas Gas
G20 G31
12.0
5.0
12.0
5.5
12.0
5.5
T A
ABLE
G30
80.58
37
36
0.70
---
2.86 - 0.85
35.6 - 6.8
0.78
---
2.17 - 0.93
36.0 - 7.1
0.78
---
2.45 - 0.93
36.0 - 7.0
Liquid
Propane
Gas
G30
12.0
12.0
12.0
37