Probelm tracing and understanding pipes.

  • Thread starter Thread starter andypeters
  • Start date Start date
  • Tags Tags
    pipes
Status
Not open for further replies.
A

andypeters

Hi guys can you help me with a problem
The boiler used to just have 2 pipes coming the top.
I wish to replace this with a combo boiler.
Here is the diagram I made to give you an idea, sorry its a bit of a rough one just I had to stop working to work it out.
I can sort the colds, hots ect... problem I have is this... how do I convert these to a sealed system.
I cant get access to any other pipes such as manifolds as the whole house is that horrible flooring.

Now I have added some pictures to with the cyldner removed to give you an idea.
The left hand pipes I can sort no problem its just a hot water to cap and remove the feeds from the tanks apart from one where i dont know where it goes, the house is under 7years old.
Just need to see how to convert and what 2 pipes to send to the combi for flow and return, I think I can use the old pipe coming from the pump and connect that to the old flow from the cylnder as its super clean.
just where is the best place for the return and convert.
so if I can just use the old pipes that feed the old boiler and have them as the flow and return it will save ripping up flooring as the pipes are very clean

thanks.
 

Attachments

  • asitis.jpg
    asitis.jpg
    36.5 KB · Views: 50
  • SN152199.jpg
    SN152199.jpg
    79.6 KB · Views: 55
  • SN152200.jpg
    SN152200.jpg
    89.3 KB · Views: 52
  • SN152205.jpg
    SN152205.jpg
    83.3 KB · Views: 47
Andy maybe you should get a plumber/heating engineer who is gas safe registered to fit the combi. Or ask Edd the Duck!!
 
how are you planning to convert to a combo(i thought that was a new take away)
as converting means gas/flue work that would be a neat trick
 
what?are you on about?

flue/gas.

just only having an issue converting from this system to accept sealed.
looking for the best place to get the return?
please dont reply again if you cant help I aint being funny just I am really tired and I am awaiting an answer not a riddle.
 
Are you saying that you want to get rid of the cylinder, and change the pipework, so that it would be suitable for a sealed system at a later stage?
 
hi anz,

just looking for the best way to convert it to a sealed system without lifting any flooring at all, the way I can see is to cap the return going into the cyclnder, then join the flow from the right of the 3 way valve to the current flow from the boiler to the cyclnder this way it can still use the old 3 year old primary pipes as the new flow and return for the combi?

so really its just join the old flow from the heating to the old flow primary and forget the rest, then cap the return near the cylnder.

then I can just use the flow and return from the old fully pumped pipes of the boiler downstairs and take them directly to the new combi flow and return?

what do you think

so this system here is same as mine: http://www.gasman.fsbusiness.co.uk/images/heating_system_1.gif

so i cap off the return going to the cyln then just join the flow heating to the flow primary and cap the cyln..
i assume the central heating return join the primary return?
 
Last edited by a moderator:
ok check this
heating_system_1.gif


the return for central heating joins the return pipe for the cyl and boiler at which at which point?
 
Last edited by a moderator:
Yes andy as long as you said
Cap the return that goes to cylinder and join the primary flow to the heating flow and as long as you got 2 way valves on rads you can use the old primarys as either flow or return
You seem to know what your doing with your description
 
think i got it, its just a case i think of capping return to cyl. then joining flows together to bypass valve pumps and get rid of them, then just go to old boiler glowworm, and use the old 2 pipes to my new central heating flow and return for combi.

I rekon thats all there is to it, unless someone can see a problem?

cheers gray, thanks for your help mate, i am greatful
 
Last edited by a moderator:
Do you just want to change your system to a sealed system ie fit an expansion vessel and cut off the F&E tank?
Why remove the hw cylinder?

The return from the cylinder is the last tee nearest the boiler, or should be, but that is irrelevant for converting to a sealed system.
Maybe you should read up on it a bit more or get someone in.
Btw. Not all boilers can be put on to a sealed system. You have never said what type it is.
 
Last edited by a moderator:
You will need to find and cap off the cold feed and open vent pipes for your old boiler.You will prob find them in the attic coming off the old heating header tank.Also do the same for the hot water side.
 
andypeters said:
what?are you on about?

flue/gas.

just only having an issue converting from this system to accept sealed.
looking for the best place to get the return?
please dont reply again if you cant help I aint being funny just I am really tired and I am awaiting an answer not a riddle.
Click to expand...

you stated you wanted to change to a combo?? boiler and as such need to be a gas registered engineer
judging by your post you do not have much experience at present as converting from a open vent to combi isnt that difficult with regard to the pipework
who is doing the boiler then??
 
It probably is best to get a plumber in - frustrating I know when we're all trying to save money. Floorboards will probably have to come up too unfortunately.

I can't work out if you're trying to create a sealed system or simply replace the boiler. Assuming it's a new sealed system and without looking at the house in detail, it's difficult to say with 100% accuracy, but the pump and zone valves, cisterns and all pipes around these will be removed.

You'll have a flow pipe from the boiler, travelling with the return to the boiler and creating a circuit to the furthest end of the house, usually up to the landing and then along.

This is where the "end" is but on a circuit you don't have an "end" - like the Circle line on the underground!! The water exits the boiler along the flow and re-enters via the return.

You'll also have a mains cold feed to the boiler and cold taps (assuming this is how they're supplied). You'll have a hot feed from the boiler to the taps. You'll also need the gas feed - but I don't do gas so this is where I shut up.
 
Cap them both as you don't need them if you don't have a cylinder. Best place to cap is remove pump and motorised valve join main flow from boiler to heating flow thus removing cylinder flow completely. Cylinder return can be capped as is or can be traced back nearer boiler and capped there. Don't join flow and return together.
 
Status
Not open for further replies.

Featured Content

Back
Top