Gas Changeover - Ariston ecoCOMBI 27 MFFI Installation And Servicing Instructions

3.7 Gas Changeover

Diameter of 6 nozzle holes (mm)
Display of recommended soft light power
1
3
26
The boiler operation can be changed over from methane gas (G20) to Liquid Gas
(G30-G31) or vice versa, an operation that must be performed by an Authorised
Service Centre.
The operations to carry out are the following:
1. Replacement of the nozzle (see table);
2. Replacement of the gas label;
3. Air/gas ratio adjustment to be made in accordance with paragraph 3.6.4
- Place the boiler in operation in accordance with the End User Manual.
- Check the seal on the gas and water sides.
- Check that the ignition operates correctly and visually check the burner flame.
- Check that the domestic hot water is being correctly produced by drawing hot water.
Check the rate of flow and/or temperature of the water, depending on the case.
- Check that the condensate drips without difficulty into the discharge.
GAS METANO
G20
2.8
33%
2
4
GAS LIQUIDO
G30 G31
2.0 2.0
33% 33%