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T e c h n i c a l N o t e b o o k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T e c h n i c a l T r a i n i n g
Gas conversion :
The gas conversion kits are defined following requirements.
The general gas conversion procedure requires the following operations:
- change the gas valve (the modulating valve is different from one type of box to another)
- change the gas rail (the diameter of injectors is defined for each gas type).
- adjust minimum burner power.
To do this, connect a manometer to the gas valve outlet pressure connector.
Force the burner to minimum power using the test mode described on the previous page: choose P01 and set to minimum. Make
sure that the heating setting temperature is not reached during adjustment time (taps if necessary open radiator and increase the
atmospheric temperature setting).
Go into the service menu using code 35 (described a few pages previously) and go to data item 52: This is the minimum power setting.
Then adjust the burner pressure to obtain (pressure tables are supplied with gas changeover kits or in product installer manuals); to
increase the pressure, increase the value of data item 52 (which corresponds to increasing the number of pulses to the stepping motor
to open it more). Do the opposite to reduce burner pressure.
Confirm the setting by pressing on MODE for 10 seconds.
- then set burner maximum pressure.
Force the burner to maximum pressure by changing P01 to 100 %.
Return to the Service menu using the code 35 and go to data item 53: This is the maximum power setting. Then set the burner
pressure to be obtained (same procedure as for data item 52).
Confirm the setting by pressing on MODE for 10 seconds.