7219712 - 01 (02/15)
EcoBlue System
21
Maintenance
7
7.4
Venting the System
1. If any air is present in the appliance or system it must be
removed in order to prevent nuisance noises that may occur
during heating or when drawing off hot water. Proceed as
follows:
1. Open the valves of all the radiators connected to the
system.
2. Set the room thermostat to the highest possible
temperature and any timers to ‘ON’.
3. Wait until the radiators are warm.
4. Switch off the boiler.
5. Vent the radiators. Work from the lowest radiator in the
property.
6. Open the bleed vent with the key, keeping a cloth
pressed against the vent.
7. Wait until water comes out of the bleed vent and then
close.
WARNING
The CH water in the radiators will still be hot.
8. Switch the boiler on.
9. After venting, check that the water pressure in the
system is still adequate.
If the water pressure is lower than 0.7 bar, the water
must be topped up. If necessary repressurise the system
(recommended pressure between 1 and 1.5 bar).
10. Reset the room thermostat to the desired temperature.
7
6
A
C
B
5
4
3
2
1
2
3
4
1
10
