Ariston 41-116-07 GAS Adjustments, Methane Gas G20, Liquid Butane Gas Liquid Propane Gas G30 G31

5.GAS ADJUSTMENTS

CATEGORY II2H3+

Lower Wobbe Index (15°C;1013mbar)	MJ/m3h
Nominal Delivery Pressure	mbar
Minimum Delivery Pressure	mbar
21 RFFI
Main Burner: n. 12 jets (ø )	mm
Consumption (15°C; 1013mbar)	m3/h
Consumption (15°C; 1013mbar)	Kg/h
Gas Burner Pressure:
max - min	mbar
28 RFFI
Main Burner: n. 14 jets (ø )
Consumption (15°C; 1013mbar)	m3/h
Consumption (15°C; 1013mbar)	Kg/h
Gas Burner Pressure:
max - min	mbar

Methane Gas

G20

45.67

20

17

1.30

2.4- 1.05

----

8.5- 1.7

1.30

3.15-1.26

----

11.0- 1.6

	TABLE 5.1
Liquid Butane Gas	Liquid Propane Gas
G30	G31
80.58	80.58
29	37
20	25
0.77	0.77
----	----
1.78 - 0.78	1.76 - 0.77
27.5 - 6.2	37.4 - 8.0
0.77	0.77
----	----
1.78 - 0.78	1.76 - 0.77
27.7 - 4.6	35.5 - 6.0

[1 mbar = 10,197 mmc.a.]

5.1CHANGING THE TYPE OF GAS

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.

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 5);

2.Adjust the maximum and minimum thermal capacity values for the boiler (see table in section 5);

3.Replace the gas rating plate;

4.Adjust the maximum thermal power setting;

5.Adjust the soft-light feature (open the cover of the regulation screw on the gas valve (see FIG. 5.1). Rotate clockwise from min. to max. as per installation requirements).

FIG. 5.1

VG002Ab

21