Odd pipe stubs on primary F/R

[slippyr4]

My house was extended on the ground floor in 2003 by the previous owners. The boiler was relocated into the extension and the F/R pipes run in the roofspace of the extension in 28mm.

I've been up in the (rather narrow) roofspace now and I was suprised to see that in the horizontal run of these 28mm pipes, there are tees with a 100mm ish length of 15mm, capped, going up vertically. There's nothing above them, nor was there ever.

So I'm a bit puzzled as to what they're there for - It really looks like they're put there deliberately.

Photo is a bit blurry but you can see them

Anyone got any ideas?

 

[Razor900]

Are you sure they aren't airbleeds?

If not they were originally probably supposed to be!

 

[muggles]

As above, probably air vents, although it would be much easier to tell if your photo was in focus

 

[slippyr4]

They've got end feed stop ends on, that's all. Very simply, it's an end feed reducing tee 28/15/28 and 100mm of 15 vertically terminated in a stop end. I know the photo is rubbish but I didn't look at it til after I'd climbed down which is a 10m crawl through a void 50cm high. Not in a hurry to go back up just to get the perfect shot!!

There was no previous access to the roofspace - I cut a hole in the ceiling to go up.

I suspect they though about some air bleeds but changed their minds.

Are there any automatic air vents that can be trusted enough to install in an inaccessible location?

 

[Nige F]

No there aren't any I would trust in that situation. If the system is working then they're not needed.

 

[slippyr4]

I though so. To be fair I've drained and refilled several times and it's not generally a problem to fill. I tend to pump for a bit without the boiler on and move most the air out before I fire the boiler.

 

[bernardgreen]

Could they be for a radiator that was never ftted ? An abandoned project to do a loft conversion maybe ?

 

[slippyr4]

i dont think so

 

[DaveHerns]

What's the wiring that's taped up in blue tape? Looks a bit suspect

 

[slippyr4]

Very suspect. It's joints from a 5core to two bits of T+E. I've already pulled up a new length of 5 core which soon will go all the way to the airing cupboard and will make that mess redundant.

 

[DaveHerns]

That's one future breakdown fixed !

 

[slippyr4]

I think I'm going to cut in an access hatch underneath them and put manual air vent caps on. Then it's the job done properly.