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
2
1
1