Ariston 41-116-01, 47-116-13, 47-116-08. 47-116-09 GAS Adjustments, Changing the Type of Gas

4.GAS ADJUSTMENTS

CATEGORY II2H3+		Methane Gas	Liquid Butane Gas	Liquid Propane Gas
		G20	G30	G31
Lower Wobbe Index (15°C;1013mbar)	MJ/m 3h	45.67	80.58	70.69
Nominal Delivery Pressure	mbar	20	30	37
Minimum Delivery Pressure	mbar	17	20	25
23 MFFI
Main Burner: n. 13 jets (ø)	mm	1.25	0.72	0.72
Consumption (15°C; 1013mbar)	mc/h	2.72	----	----
Consumption (15°C; 1013mbar)	Kg/h	----	2.02	2.02
Gas Cock Outlet Pressure
max - min	mbar	11.4- 2.0	27.5 (*) - 5.0	35.0 (*) - 7.0
27 MFFI - 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

(1mbar = 10,197column of water)

4.1Changing 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 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;

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

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