Impossible to fix flow problem? 4 grand down so far...

[Harvest Fields]

Pressure should be between 1 and 1.5 dependant on boiler when cold

 

[Old UKPF 99429]

I am thinking the only way to bottom this out is to buy some flow meters and determine once and for all if I have flow or note? One was suggested in earlier post, but also found these Piusi K24 AdBlue™ Flow Meter | BEST Price | In Stock | Fast Del|

 

[sammathias]

A small grundfos 15/50 will be capable of heating a 12 rad system...what makes you think a huge pump is going to make any difference? Going down the route of flow meters is just wasting time and money.
Time to get a decent heating engineer out and get him to read the installation instructions on bleeding the boiler to start. And look over your heating system. No doubt something straight forward.

 

[fixitflav]

Wasn't sure I understood the question about flow from the vent point on the boiler?

The system should have a number of manual air vent points, usually just a knurled nut to open. The one near the boiler will give some idea whether the boiler is full. Water should flow from the vent.

 

[chris watkins]

Darryl why do you think you are still capable of sorting this out & why no photos ?
If the boiler does the same thing when just the hot water is on (no heating) a small 22mm flow & return, then the problem lies on the primary circuit between the boiler & the upstairs cylinder cupboard. A flow meter is going to tell you what we already know & then what, what will you do to fix it?
Find someone who understands what they are doing, it is more than likely a simple fix as a number have suggested.
I am out of here, good luck.

 

[Old UKPF 99429]

Thanks. I don't think I am capable of fixing it, I know I am not, just looking for some creative ideas and to learn a little really. Had two different plumbers out so far, 4k spent and the system is behaving identically, they tried all the "simple fixes" apparently and some more complex ones. Really appreciated the responses and ideas.

Tried to take some pics last night and all the useful bits are blocked by the big red pressure ball thing from the sealed system! Will try again or draw it down later.

 

[Harvest Fields]

Thanks. I don't think I am capable of fixing it, I know I am not, just looking for some creative ideas and to learn a little really. Had two different plumbers out so far, 4k spent and the system is behaving identically, they tried all the "simple fixes" apparently and some more complex ones. Really appreciated the responses and ideas.

Tried to take some pics last night and all the useful bits are blocked by the big red pressure ball thing from the sealed system! Will try again or draw it down later.

There’s your problem. You need a heating engineer and not a plumber mate.

 

[Old UKPF 99429]

Valid point...

 

[Old UKPF 99429]

 

[sammathias]

Oooosshh. How many copper pipes do you have coming from the boiler itself?

 

[Harvest Fields]

Oooosshh. How many copper pipes do you have coming from the boiler itself?

Good question.

 

[sammathias]

Picture of under the boiler at connections?

 

[Gasmk1]

no bypass ?

 

[sammathias]

no bypass ?

I think that's the least of his worries.

 

[Gasmk1]

i know it looks like a shocker of an install

 

[Karl]

Ask around friends, family or even the local plumbers merchants for a highly recommended heating engineer! Word of mouth and reputation is the best advertisement
Good luck

 

[AMGasServices]

Is it me or are the flow and return pipes looped together ? (if you look at the second picture on the second row)

 

[chris watkins]

I know I said I would come back but
if you paid £4k for that you were quite royally tucked up mate. 22mm equal tee before the pump what is that for ?
York, E/F & compression used, there are 2no. 22mm couplings on a 150mm length in-between a tee & elbow, more like wiped joints than soldered, get a pro in & stop messing around.

 

[AMGasServices]

I agree with Chris.

Personally I’d rip up the piping the cylinder cupboard and around the boiler and repipe the lot.

 

[Old UKPF 99429]

Pictures might be a bit confusing. Connections are at the top of the boiler, just 2, 1 flow, 1 return. They are not looped together but the pic makes it look like it. 3 pipes into the roof. Flow going up, and two returns from upstairs. H/w return and upstairs rads. They join the pipe from the flood on the far right, downstairs return...