How do I refill the boiler? - Vaillant ecoTEC pro 28 combi


Postby davejohnparkes » Mon Oct 05, 2009 6:42 pm

How do I refill the boiler? Vaillant ecoTEC pro 28 combi

The bar pressure guage shows F22 (manual says the boiler needs filling with water)

Having read pages and pages of info. I cannot understand how to fill the system

The manual says:

4.3.2 Checking the system pressure
• Check the water pressure of the system using the
pressure gauge (1) before putting the boiler into operation.
For the heating system to operate properly, the
indicator on the pressure gauge must be in the dark
grey zone when the system is cold. This is a filling
pressure between 1.0 and 2.0 bar. If the indicator is in
the light grey area (below 0.8 bar), fill the system up
with water before putting the boiler into operation.

I had an electrician here today so maybe something went wrong with the c/h system when the electrics were turned off.

Any ideas please, apart from calling a plumber out - ££ - ching ching!!

Thanks.
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Postby wimiu012uk » Thu Oct 08, 2009 3:35 pm

Look on utube ? with a search for filling your type of combi boiler, i know there are videos for wosterbosch boilers.
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Postby bd3cc » Fri Oct 09, 2009 8:55 pm

you should have a filling loop below your boiler, open taps (only one may be closed), and watch the needle rise to the correct setting. you may need to bleed some rads and repeat process
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