Quick unvented query

[Riley]

Had a customer ask about installing one today.

Tested water pressure and flow
standing 4 bar
working 1.2bar
lpm 12-13

I'm pretty new to unventeds on my own. Would I be right in saying that without a mains upgrade I'm gonna struggle to get much in the way of benefits ??

cheers

 

[townfanjon]

Yep no chance on that one mate , pressures low but it's your flow that knacks it

 

[Riley]

Thought as much mate thank you.

 

[townfanjon]

Most need at least 20 lpm , 25 and upwards better, I have done a few on just under 2 bar working .

 

[Riley]

Cool, i just wasn't sure if there may have been a suitable cylinder no worries though. I still have a new boiler.

 

[Ch4 plumbing]

GAH Duelstream state theirs will work on a 15mm main at 1.5bar and 9lpm, never fitted one though?

 

[Riley]

Cheers ch4 Not gonna be that great a performance though is it. Shame

 

[Riley]

Could look at an accumulator I spose

 

[Ch4 plumbing]

It's an unvented cylinder with a huge accumulator to make up for the poor cold main input, need some space.

 

[Riley]

That's the other issue. Cylinder cupboard is snug. Was always gonna have to be slimline. May knock the idea on the head before I go too far