couple of questions

[byron]

My combi,worcester28siII,is situated in my loft hence all pipework and rads are below it,a couple of questions here for my piece of mind.
!. can I still run the c/h with one of my rads disconnected from the system.
2. If I drain the the system do I just bleed the pump and the rads when ready to start up the c/heating.
3. Will I need to do anything to the Expansion vessel,which according to the service manual is pressurisedat 0.5 bar.
regards

 

[kevplumb]

1 yes
2 make sure the aav is open as well
3 no

 

[byron]

thanks Kevplumb,Can you explain the provedure with the aav control. cheers.

 

[Soggy_weetabix]

ensure the plastic srcrew on top the the aav is loostened. It should be anyway but they have a habit of leaking so plumbers tighten them up. It must be open to allow your boiler to vent.

 

[Soggy_weetabix]

ensure the plastic screw on top the the aav is loostened. It should be anyway but they have a habit of leaking so plumbers tighten them up. It must be open to allow your boiler to vent.

 

[byron]

thanks soggy ,so what your saying is that the aav works automatically and apart from it being loose it should be left alone.
regards