Ariston microGENUS HE 28 MFFI Installation And Servicing Instructions

37
4. GAS ADJUSTMENTS
CATEGORY II2H3+ Methane Gas
G
20
Liquid Butane Gas
G
31
Liquid Propane Gas
G
30
L
ower Wobbe Index (15°C;1013mbar) MJ/m
3
h
Nominal Delivery Pressure mbar
M
inimum Delivery Pressure mbar
4
5.67
20
2
0
8
0.58
29
2
8
8
0.58
37
3
6
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
0.70
---
1
.89 - 0.87
2
9.0 - 5.5
0.74
---
2.21 - 0.95
27.5 - 5.4
0.74
---
2.48 - 0.95
28.0 - 5.4
1.30
2.54 - 1.16
-
--
7
.5 - 1.7
1.30
2.96 - 1.27
---
9.5 - 1.8
1.30
3.33 - 1.27
---
12.0 - 1.8
microGENUS HE 24 MFFI
Main Burner: n. 14 jets (ø) mm
Consumption (15°C; 1013mbar) max - min m
3
/h
C
onsumption (15°C; 1013mbar) max - min Kg/h
Gas Burner Pressure
m
ax - min mbar
microGENUS HE 28 MFFI
Main Burner: n. 14 jets (ø) mm
Consumption (15°C; 1013mbar) max - min m
3
/h
Consumption (15°C; 1013mbar) max - min Kg/h
Gas Burner Pressure
max - min mbar
microGENUS HE 32 MFFI
Main Burner: n. 14 jets (ø) mm
Consumption (15°C; 1013mbar) max - min m
3
/h
Consumption (15°C; 1013mbar) max - min Kg/h
Gas Burner Pressure
max - min mbar
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 b
urner
(see
T
able A)
;
2. Adjust the maximum and minimum thermal capacity
v
alues f
or the boiler
(Section 4.2 Adjusting the Gas
Pressures);
3.
Adjust the maxim
um thermal power setting (
P
a
ge 39
and T
ABLE B
40)
;
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
b
y adjusting the dip s
witch as indicated in Section 2.17
(FIG. 2.34). It can be turned on or off.
4.1 CHANGING THE TYPE OF GAS
CATEGORY
II2H3+
Methane
Gas
G20
Liquid
Butane
Gas
G31
Liquid
Propane
Gas
G30
Soft-light
Pressure (mbar)
24 kW Model
28 kW Model
32 kW Model
5.0
5.5
5.5
12.0
12.0
12.0
12.0
12.0
12.0
TABLE A
SOFT LIGHT PRESSURES

Ariston microGENUS HE 28 MFFI Specifications

General

Brand	Ariston
Model	microGENUS HE 28 MFFI
Category	Boiler
Language	English