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3
USEFUL TIPS
3.1 Filling the heating circuit
Heating circuit
filling cock
Figure 3.1
Open the filling cock in Figure 3.1 located
under the boiler and check the heating cir-
cuit pressure on the pressure gauge at the
same time. The correct cold system pres-
sure value should be within the first green
bar on the pressure gauge quadrant (Figure
3.2).
Figure 3.2
When the operation is complete, close the
filling cock and bleed any air from the ra-
diators.
USEFUL TIPS
CLOSED
OPEN
3.2 Heating
For rational and economical service, have a
room thermostat installed.
Never turn off the radiator in the room where
the room thermostat is installed.
If a radiator (or convector) does not heat up,
check if there is any air in the system and
make sure that the cock is open.
If the room temperature is too high, do not
adjust the radiator cocks but decrease the
heating temperature setting using the room
thermostat or the heating control buttons 15
and 16 (Figure 3.3).
18
12
13
Figure 3.3
3.3 Antifreeze protection
The antifreeze system, and any addition-
al protective devices, safeguard the boiler
against possible damage due to freezing.
This system does not guarantee protection
for the entire hydraulic system.
Where the outdoor temperature could fall
below 0°C, it is recommended to leave the
entire system on, setting the room thermo-
stat to a low temperature.
The antifreeze function is active even if the
boiler is in OFF (Figure 3.4).
17
16
15
14
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