Worcester Bosch 6 Bar PRV Replacemenet

[qwales]

I have an external flow that is dripping and I believe it is the PRV, it seems quite rare to have a 6 Bar one, in fact the only place I can get a W.B. is on their site for 3 times the price of the usual 3 Bar. Would it be Ok to replace it with the 3 Bar. I have an old Greenstar 30CDI

 

[Gasguru]

They're always 3 bar..sound like someone's fitting the wrong one in the past.

 

[polesapart]

Would this be a 6 bar PRV within the boiler casing or one adjacent to an unvented cylinder in the airing cupboard?

 

[qwales]

The later

 

[Gasguru]

Ok so it's got nothing to do with the Greenstar CDi boiler....

You need to get a G3 licenced plumber to sort out your unvented cylinder. As well as ther safety valve the expansion vessels probably flat/failed and given the rough installation don't be surprised if there's a few other things that need sorting out regards compliance with the regs.

 

[qwales]

Yes you're not wrong, i have already ordered a Drayton ZA5 and an Zilmet 18L EV.