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IMPORTANT! The piping and heating elements must be thoroughly cleaned with running water before
starting the boiler. This operation is important to prevent the deposit of foreign bodies in the various
boiler compartments, with the risk of compromising its operation. For this purpose it may be useful to
install a dirt separator filter
Pressure check
To display the heat chamber pressure, press and hold key 5 on the display for a few seconds. Digits
indicating the pressure (letter b = bar) will appear on the second row. The ideal pressure must be
between 1 and 1.5 bar. If the pressure exceeds 2 bar, the stove will enter the alarm mode. Moreover,
the system supplied to the stove is equipped with a mechanical relief valve with a fixed calibration of 3
bar which automatically drains the system if it reaches this pressure (in case of "not standard"
installations, provide a drain pipe).
System refill
It is possible to proceed with the system refill once the hydraulic connections to the system piping have
been completed. To do this it is necessary to open the tap until the gauge index will have reached 1
bar. During this operation it is recommended to bleed the internal air through the vent valve "jolly”
located under the cover of the boiler and through the radiator vents. This operation is to be carried out
with the boiler switched off. Once the system has been bled and has reached the pressure indicated, it
is then possible to proceed with the boiler start up. Occasionally check that the system pressure is
always kept between 0.5 and 1.5 bar.
IMPORTANT! If for any reason the pressure should increase or decrease, it is advised to troubleshoot
and reset the pressure.
PRESSURE TOO LOW: open the load tap until the desired pressure is reached (1 bar).
PRESSURE TOO HIGH: let some water leak out from the safety valve by rotating the specific knob until
the desired pressure is reached (1 bar); next place the safety valve in its initial position, or let water leak
out through the radiators air vent.
Warning!
Let water circulate for a few minutes so as to allow all the air to be bled through the jolly valve. To
make this operation easier, it is advised to operate the pump by turning the switch on and off, at
approx 10 second intervals.
Check the pressure indicated on the gauge. If it has decreased then bring it back between 0.5 and 1
bar using the refill tap.
It is good practice to predispose an air valve on all the heating elements.
Avoid operating the circulation pump with the boiler empty.
N.B. If the system is not completely bled the boiler may not work correctly and the alarm “PRESS
WATER” will appear.
System type
The boiler allows the radiators to be heated autonomously in a dwelling of approx 380 cubic metres.
AUTONOMOUS OPERATION
The boiler can operate autonomously by connecting directly to the heating system through the radiators
or underfloor heating. The power ratings signalled refer to ideal systems (aluminium radiators, insulated
copper pipes). Substantial differences decrease the heatable metrature.
INTEGRATED OPERATION
It is possible to install the boiler in parallel to another heat generator with either open or closed circuit.