4.1Changing the Type of Gas
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 |
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Recommended |
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(mbar) | 17 - 18 | 18 - 19 | |
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5.Adjust the
6.Adjust the ignition delay feature for the heating system (can be set from 0 to 2 mins.).
5.MAINTENANCE
It is recommended that the following checks be made on the boiler at least once a year:
1 - Check the seals for the water connections; replacement of any faulty seals.
2 - Check the gas seals; replacement of any faulty gas seals.
3 - Visual check of the entire unit.
4 - Visual check of the combustion process and cleaning of the burners if needed.
5 - If called for by check no. 3, dismantling and cleaning of the combustion chamber.
6 - If called for by check no. 4, dismantling and cleaning of the injectors.
7 - Visual check of the primary heat exchanger:
-check for overheating in the blade assembly;
-clean the exhaust fan if needed.
8 - Adjustment of the flow rate of the gas: flow rate for lighting, partial load and full load.
9- Check of the heating safety systems:
-safety device for maximum temperature;
-safety device for maximum pressure.
10- Check of the gas safety systems:
-safety device for lack of gas or flame (detection electrode);
-safety device for gas cock.
11- Check of the electrical connection (make sure it complies with the instructions in the manual).
12- Check of domestic hot water production efficiency (delivery rate and tem- perature)
13- Check of the general performance of the unit.
14- General check of the discharge/ventilation of the combustion by- products.
22 | B023 |
