BLUEHELIX MAXIMA
190 EN
cod. 3541U630 - Rev. 00 - 07/2020
System hydraulic pressure manual reset
The filling pressure read on the boiler water gauge
(detail 2 - fig. 9) with system cold must be approx 1.0
bar. The boiler stops if the system pressure drops to
values below the minimum. Pull out the filling knob
(detail 1 - fig. 9) and turn it anticlockwise to return it to
the initial value. Always close it afterwards.
Once the system pressure is restored, the boiler will
activate the 300-second air venting cycle, identified on
the display with the appropriate sequence of screens.
To prevent boiler shutdown, it is advisable to periodi-
cally check the pressure on the gauge with system
cold. In case of a pressure below 0.8 bar, it is advisa-
ble to restore it.
fig. 9- Filling knob
System semiautomatic pressure restoration (P62 = 0)
In case of low water pressure (indicated by the symbol ), access the pressure control screen (fig. 8) and press the
"RESTORE” button.
This activates the filling valve until the pressure returns to the nominal value (P57) +0.4 bar.
If the nominal pressure is not reached within a time limit (4 min), a shutdown is generated (A23).
System automatic pressure restoration (P62 = 1)
If the boiler detects a too low system pressure, the filling valve is automatically activated until the nominal value is re-
ached (P57) +0.4 bar.
If the nominal pressure is not reached within a time limit (4 min), a shutdown is generated (A23).
System draining
The drain faucet ring nut is located under the safety
valve inside the boiler.
To drain the system, turn the ring (ref. 1 - fig. 10) coun-
ter-clockwise to open the faucet. Do not use any tools;
use hands only.
To drain only the water in the boiler, first close the
shut-off valves between the system and boiler before
turning the ring.
fig. 10- Safety valve with drain faucet
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