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3.2.7.
Chimney sweep function
The boiler has a chimney sweep function which must be used to measure the combustion efficiency on site and to enter the subsequent
combustion regulation phase.
To activate the chimney sweep function, keep the “ + ” keys (A + B fig. 1) pressed for the cycle time.
If the keys are released before the end of the cycle time, the boiler continues to operate normally.
If there is a DHW request, the chimney sweep function is performed on the DHW, otherwise in heating.
Having entered the chimney sweep function, the letters "Lo" appear on the display, alternating with the temperature value of the heating
water (e.g. 45), indicating that the "chimney sweep function" has been activated at minimum power. The display shows the symbol “ ” (1,
fig. 1), if the burner is on. The boiler performs the ignition sequence and then switches to operation at minimum power (“Lo”).
Press and hold the " " key (F fig. 1) for 3 seconds to switch to the "chimney sweep function" at maximum power ("Hi").
By holding down the " " key (E fig. 1) for 3 seconds, you return to the "chimney sweep function" at minimum power ("Lo").
To exit the chimney sweep function, press and hold the " " key (B fig. 1) for 3 seconds and you will return to normal operation.
The duration of the chimney sweep function is 15 minutes.
3.2.8.
Connection to the gas network
The gas supply pipe must have a section equal to or greater than that used in the boiler.
The section of the pipe depends on its length, the type of route and the gas flow rate. It must therefore be sized.
Comply with the installation regulations in force, which are understood to be fully transcribed here.
It should be remembered that before putting an internal gas distribution system into service, and therefore
before connecting it to the meter, its tightness must be checked.
If some part of the system is not visible, the leak test must precede the covering of the pipe. The leak test
must NOT be carried out with combustible gas: use air or nitrogen for this purpose.
In the presence of gas in the pipes, remember that it is forbidden to search for leaks by means of flames,
for this purpose use the specific products available on the market.
It is COMPULSORY, to connect the gas connection of the boiler to the supply pipe, to insert a gasket of
suitable sizes and materials (fig. 14).
The attachment is NOT suitable for use with hemp, Teflon tape and the like.
fig. 12
Position
alternative
Gasket
fig. 13
fig. 14
Gasket
