What is this? Dangerous?!

[ofrivillige_hantverkaren]

House from '54 where I've lived for almost 1 year and been fixing things as well as discovering things along the way.

On the upper floor, above in a small closet, hides some sort of cistern... container?!





There is a pipe going to/from it. Above it, above this ceiling is the cold attic.

I haven't checked from above, nor started looking at where the pipe leads.

I'm thinking it could be some kind of expansion chamber but for what? If not... could it be something dangerous?

I suppose someone might have an obvious answer since it might be an obvious thing. But what do I know. Appreciate advice, ideas, feedback.

 

[tippz]

Expansion tank for the heating system?

 

[ofrivillige_hantverkaren]

Hmm yeah why not, an expansion tank. Thanks for that. Don't really know how the system works more than that I have district heating, bleed radiators, can regulate the pressure down in the basement. But that could be it!

 

[hempularen]

It resembles an expansion tank. But then there is usually also a venting up through the roof. And the "supply" from the heating system usually comes in from below.

 

[tommib]

Check the attic to see if there's a pipe coming up from it. It usually is an open pipe up through the roof.

Has the house previously had some form of heated heating?

If you have district heating today, that vessel might be disconnected.

 

[ofrivillige_hantverkaren]

Ok then I know what to look for - possible venting and an inlet, thank you!

.,expansion tank..then there is usually also a vent up through the roof. And the "inlet" from the heating system usually comes in from below.

 

[ofrivillige_hantverkaren]

Just realized that there was a small pipe sticking up on that side of the roof. Then we have two good tips about searching for the so-called vent!

Absolutely, the house has been heated during its lifetime.

Very interesting if that vessel serves any function or not. Thanks - will troubleshoot!

This is going to be exciting. (Will get back to you)

..usually an open pipe up through the roof.

Has the house previously had some form of heated heating?

If you have district heating today, that vessel might be disconnected.

 

[imported_Benno]

Is it connected to the heating system? People tend to be lazy and leave the expansion tank in place when it's taken out of service. I found two of different ages in the attic. The third in the boiler room is still in use.

 

[ofrivillige_hantverkaren]

Oh, you found several of those, did you! It will be interesting to check if it's even connected/serving any function. Personally, I would look forward to being able to tear it out. But as I've been advised, I should check if a pipe I know about (venting) goes from the vessel to the roof. And if there is another pipe connected. Appreciate the feedback.

Is it connected

 

[hempularen]

We had the expansion tank in the attic when we bought the place. When I took it out of service and started cutting off the pipe to it, the fitting on the tank cracked and it tipped over, due to the vibrations from the saw. Everything was almost completely rusted through. I was really lucky to disconnect it just then.

 

[ofrivillige_hantverkaren]

Ha! My hope is that it is unused scrap. Going to be fun to .. well, rip it out through the wall. Have received good advice. Identify the pipes and then see if it is operational or not. Will get back to you.

When I took it out of operation and started cutting the pipe to it, the coupling on the tank cracked, and it fell over,

 

[ofrivillige_hantverkaren]

Checked a vent pipe on the roof today



and the situation under the roof



BUT didn't get much further today

1. Would need to dig into the kutterspån to approach the truth if the small pipe belongs to the steel tank.. it might be cast in though(?)
2.
Of course, it would be good to really get the arm properly underneath (where I took a picture of the tank) to identify other possible pipes and connections


!!!
Saw that the ROOF IS LEAKING

while I was in the attic, so you understand that my focus completely switched to roof replacement
(another thread soon enough to 100%)


I still want to come to some conclusion with your help and get feedback along the way.

I will update the thread with more pictures next time so we can see all the pipes! Preferably want to get rid of the contraption.