Sealed system

[Jonnyboygold]

Want to convert my open vented system to a sealed sytem. Can fit pressure valve loop and vessel in airing cup'd but this is in the middle of the house.
Can the pressure relief discharge in the garage or do I have to pipe it through the garage to the outside?

 

[cr0ft]

Just get a Gas Safe Installer in and they will let you know if it's a go or not. I take it that's what you're planning to do?

 

[aggis]

Does the MI of the boiler allow this, as there are certain requirements & if not followed could be very dangerous!!
AS cr0ft says use a proffessional or if it's a gas boiler a Gas Safe installer as the system alteration is notifiable.