36
TEMPERATURA PERICOLOSA
G
H
I
36
7-HYDRAULIC CONNECTION
•
after starting up the boiler for the first time and bringing the system up to temperature, stop the pumps and repeat the air purging
procedure;
•
leave the system to cool, and if necessary, restore the water pressure to 1 bar (100 Pa).
NOTE
In systems with a closed vessel, where possible, the water pressure in the heating system must not be lower than 1
bar (100 Pa) when the system is at room temperature; if this is not the case, use the tap to fill the system
This operation must be performed when the system is cool.
The pressure gauge on the system enables you to read the pressure in the circuit.
During this operation, any air in the system is released from the automatic vent “G” at the top of the body of the boiler.
The valve is underneath the front panel, just lift the cover.
To allow the valve to vent, loosen the side cap (see figure)
The filling pressure of the system
WHEN COLD
must be 1 bar (100 Pa).
Upon completion of this operation,
always
close the tap.
To access the vent valve, lift the central cover and loosen the side cap.
G = RELIEF VALVE
H = PROBE
I = H2O SAFETY THERMOSTAT
