Baxi MainEco Heat 15 User's Guide download pdf (Page 22)

22 7215844 - 01 (08/14)

7 Maintenance

7.4 Venting the System

8. Switch the boiler on.

9. After venting, if the system is of the sealed (pressurised)

type check that the water pressure is still adequate.

For sealed systems - if the water pressure is lower than

0.7 bar, the water must be topped up (recommended

water pressure between 1.5 and 2.0 bar).

10. Reset the room thermostat to the desired temperature..

If any air is present in the appliance or system it must be

removed in order to prevent nuisance noises that may occur

during operation. The boiler has an inbuilt auto air vent to aid

the removal of air and is supplied in the open position. 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.

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Baxi MainEco Heat 15 User's Guide Page 22