Issues with 22mm piping??

[Ben Miners]

only one valve open as the plumber said i only need to open 1 on each rad??

 

[ShaunCorbs]

only one valve open as the plumber said i only need to open 1 on each rad??

open both

 

[Ben Miners]

ok I have opened both on all rads but still nothing yet

 

[jtsplumbing]

I recon you have either a blockage or air lock, 3 rads with an output of 4500 btu's each 15mm should cope with it. things you need to try first to see if water is going through when you turn on one of the new rads does any of the pipes start to get hot ?? did the old rads work B4 and what was the output on those were they single or double panel rads

 

[Ben Miners]

so just to clarify the 3 rads are currently on 22mm, previously were standard rads on 15mm. not sure of the previous rads but but were standard size etc.

one of the rads started to get hot when the water flowed in but then seems to cool down again.

the old rads worked fine which were single column

thanks again for your helps

 

[Ben Miners]

how do I check for a blockage or air lock??

 

[ShaunCorbs]

how do I check for a blockage or air lock??

turn half the working rads off

 

[Ben Miners]

ok so once I have turned half the working rads off, then what do I do? Should I turn off half the rads in the house off or just downstairs?

 

[jtsplumbing]

how do I check for a blockage or air lock??

Are you using a plumber or DIY ? you will need to disconnect one side off one of the new rads both ends closed, open up a valve let water into a bucket if that side is getting hot then repeat with other side , any plumber would know how to do these basic checks, total waste of time changing pipe to 22mm if its connecting back to 15mm, it should 22mm going onto 15mm, it seems your going to finish up digging up floors until you find the original 22 mm pipe.

 

[Ben Miners]

can I just turn the stats down to zero???

 

[Ben Miners]

it is a plumber we are using. I presume he has checked for a blockage or airlock already, but I can double check with him.

I think he is thinking that if he makes it 22mm from the boiler to the lounge it will be ok, as currently its 15mm and then to 22mm.

sounds like I could do with another plumber to come and take a look.

cheers

Ben

 

[ShaunCorbs]

ok so once I have turned half the working rads off, then what do I do? Should I turn off half the rads in the house off or just downstairs?

turn the upstairs rads off via there trv does that one rad heat up?

 

[gmartine]

By turning the working rads off upstairs we/you can establish whether the lounge rads are capable of working correctly or if there is a blockage or air in the system. I'd also be wary of the fact that it looks like the pipes aren't being insulated properly before being buried, we certainly can use fabric tape to protect pipes on short runs but it looks like he's taken the easiest route by digging a fairly shallow trench and wont be insulating the pipes. That's heat energy being lost to the concrete instead of your radiators.

 

[Scott_D]

Try and post a picture or drawing of the pipes from the boiler as im confused
Whats been upsized
What is planned to be upsized

Sounds like crossed wires and bad communication to me

 

[jtsplumbing]

Try and post a picture or drawing of the pipes from the boiler as im confused
Whats been upsized
What is planned to be upsized

Sounds like crossed wires and bad communication to me

From what I can gather he has just upsized the pipes around that room joining back on to excising 15mm but the heat load of his new rads should be ok for 15mm pipe now they are digging up rest of floor until they find 22mm