Baxi EcoBlue Advance Combi Owner's Manual download pdf (Page 21)

EcoBlue Advance Combi 21

Maintenance 7

7212139 - 02 (06/14)

7.5 Draining the System

1. It may be necessary to drain the CH system if radiators need

to be replaced or removed, if there is a major water leak or if

there is a risk of freezing. Proceed as follows:

1. Open the valves of all the radiators connected to the

system.

2. Switch off or disconnect the boiler’s electrical isolation point.

3. Wait until all the radiators are cold.

4. Connect a drain hose to the lowest draining point. Place the

end of the hose in a drain or at a place where drained

water will not cause any damage.

5. Open the CH system drain valve. Drain the system.

WARNING

The CH water may still be hot.

6. When water stops flowing from the draining point, close the

draining valve.

See Sections 7.4 & 7.5 for Re-pressurising & Venting

the system. If in doubt seek advice from your installer.

After draining and re-pressurising the concentration of

system corrosion inhibitor and anti-freeze may become

excessively diluted - seek advice from your installer.

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Baxi EcoBlue Advance Combi Owner's Manual Page 21