7 Commissioning
7.1 Checklist before commissioning
Warning
Do not put the boiler into operation if the type of gas supplied does
not conform to the approved gas types.
1. Check that the gas type supplied matches the data shown on the
boiler's data plate.
2. Check the gas circuit.
3. Check the hydraulic circuit.
4. Check the water pressure in the central heating system.
5. Check the electrical connections of the thermostat and the other
external connections.
6. Check the other connections.
7. Test the boiler at full load. Check the setting of the gas/air ratio and
correct it, if necessary.
8. Test the boiler at part load. Check the setting of the gas/air ratio and
correct it, if necessary.
9. Final activities.
7.1.1
Gas circuit
Warning
Ensure that the boiler is disconnected from the power supply.
1. Open the main gas tap.
2. Open the boiler gas tap.
3. Remove the casings on the inspection side.
4. Check the gas inlet pressure at measuring point C on the gas pipe.
Warning
The pressure must be the same as the one shown on the data
plate.
5. Check the tightness of the gas pipe, including the gas taps.
6. Vent the gas supply pipe by unscrewing measuring point C.
7. Tighten the measuring point again when the pipe has been fully
vented.
7.1.2
Hydraulic circuit
1. Check the water pressure in the central heating system.
If necessary, top up the central heating system.
2. Check the siphon; it should be fully filled with clean water.
3. Check the water-side connections for tightness.
7.1.3 Connections for the air and flue gas pipes
1. Check the flue gas outlet and air supply connections for tightness.
7.1.4 Electrical connections
1. Check the electrical connections.
Fig.52 Gas inlet pressure measuring point
7 Commissioning
7600532 - v.11 - 13122018 49
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