changing to sealed system?

[apcdave]

Hi chaps,

Have had best part of a 2 day mare with a vented heating system ( drained the system down to change a 2 port ) and now cannot clear the air from the pipes. It's a warm flow 70/90 oil boiler - would it be straightforward enough to change the system over to a sealed system set up - using an 18 litre exp vessel for instance?

cheers

dave

 

[Ermintrude]

What's the boiler rated to? Easy to change prv must be connected directly to boiler before any valves tho! But best done by a qualified OFTEC installer