refilling Vaillant VCW GB 221 H

[gavinge]

Hi,

I moved into a house about a year ago with the above boiler. The timer is a bit temperamental but other all has been good.

I have noticed recently that the pressure on the gage has dropped off and reading the front panel it would suggest that I can refill/re presurise the system.

However I do not have the instruction manual on how to do this.

Does anyone have details how to do this?

I have also noticed a very very slow drip on the left hand side about halfway back. Anybody know what part this might be indicating is failing?

Any help would be really appreciated!

Gavin

 

[Gasguru]

Details on pressurising the boiler are in the FAQ's. Only take it to 0.5 bar on this boiler as you don't know whether it will start leaking .

Leaks on the left hand side are often due to the older plastic heat exchanger leaking (hence don't go mad with the pressure). Look underneath on the left - the image below shows the replacement kit (arrow points to metal heat exchanger). The plastic type is black in colour and much larger.