Really old install - should I change things

[Buffy330]

thanks for your reply Siricosm

The system is definitely a 2 pipe system , and not much of it is 22mm
All extensions have been made in 15mm , and there is more 15mm than 22mm.
From my checks , some of the 15mm extensions have up to 6 rads , and this is why I was going with a new 22mm run upstairs and feed directly to each radiator , rather than a run of radiators.

I have already read many articles ref balancing the system and all rads have lockshields and TRV fitted.I bought an infra red gun to assist .
This improved matters but has not solved them.

Im wondering if a sketch I did as a pdf would help this make sense of all this ?

Thanks

 

[WC1]

He has a very good understanding yes. Certainly taught me a lot my college didn't.

Is this the Andrew Millward who does the heating system videos on YouTube? They are very good.

 

[SJB060685]

Is this the Andrew Millward who does the heating system videos on YouTube? They are very good.

Its is yes. He has a wealth of knowledge and is very good with heating systems. His level of understanding far exceeds anything taught at college and he's prepared to take the time to teach as well. I was only ever a humble oil engineer but always looking to further my knowledge and he is great person to listen to.

 

[gmartine]

Is this the Andrew Millward who does the heating system videos on YouTube? They are very good.

Yes, he has a facebook group that interested parties can join. I've asked him a few technical queries in the past usually concerning viessman setups and he gets back to me, usually phones me so he's a real gent as well as being a bit of a wizard.
[automerge]1605458595[/automerge]

thanks for your reply Siricosm

The system is definitely a 2 pipe system , and not much of it is 22mm
All extensions have been made in 15mm , and there is more 15mm than 22mm.
From my checks , some of the 15mm extensions have up to 6 rads , and this is why I was going with a new 22mm run upstairs and feed directly to each radiator , rather than a run of radiators.

I have already read many articles ref balancing the system and all rads have lockshields and TRV fitted.I bought an infra red gun to assist .
This improved matters but has not solved them.

Im wondering if a sketch I did as a pdf would help this make sense of all this ?

Thanks

What boiler do you have and what's it maximum output?

 

[Buffy330]

Right , Ive had a chance over Xmas to look at this system.

To sum up , floor standing boiler - external pump to 22mm flow and return.
Downstairs there is a Tee in 22mm with 15mm tails to feed 3 rads in the living room .
Pipework then goes up to the airing cupboard.
Here there is another Tee in 22mm .

One run is old and serves the older part of the house , the other is later.

Thankfully the main newer run down the centre of the house can be expanded to do away with the upstairs Tee , and everything will come off one run.

All good so far , and even my cold rads are now hot.

Now part of my plan was to fit an Adey Filter.
However there is not enough pipework on the return by the boiler , so I guess the next best place is in the airing cupboard.

So my question is ,

In order to get 150mm of vertical pipe , I am going to have to raise the pipework as it comes out of the floor , will this be ok , or will this cause the return to be problematic ?

Secondly , the 22mm run upstairs is feeding a lot of radiators , would there be any benefit from adding a second pump in the airing cupboard of the same type and rating , which would be switched together at the same time ?

Forgive the simple laymans question , Im just trying to get things right after undoing a couple of extensions to the system.

Many thanks

Steve