Help with pumping over on incorrect system layout (I believe!)

[uwavetv]

Hi

Would really appreciate if someone can help, done the 100 hrs on the web trying to fix myself but need guidance.

I have a two story house with boiler in external garage. I have recently added eTRVs on all but 1 rad, cleaned system etc. Issue is when I have only say three/four rads open the flow is poor through them and goes up and out the vent pipe (path of least resistance I assume) not as bad on pump setting 1 but on 2 it is a full flow out the vent. Pictures below, any way I can stop this, looked at combining the Vent and Feed but not sure where to join and also would have the filling air lock issue associated with this but would rather that problem than the circulation up the vent and down the feed.

Any guidance much appreciated
uWave

 

[Best]

Someone would need to look at it all, but I think there is nothing too bad about it at the moment that a few modifications won't fix.
It's either do something with the vent/feed, or change it to a sealed system, which is a very easy job & inexpensive.

 

[uwavetv]

OK, so if I was to go to a low pressure sealed how would the attached look in terms of the system diagram/setup, again please excuse the ignorance...

 

[ShaunCorbs]

OK, so if I was to go to a low pressure sealed how would the attached look in terms of the system diagram/setup, again please excuse the ignorance...


View attachment 22250

Doesn't matter mate as you haven't got your unvented ticket

 

[uwavetv]

Sorry Shaun don't follow you, where is the issue? Ta

 

[doitmyself]

The pump is wrong type.

In what way is it the "wrong type"?

 

[ShaunCorbs]

Sorry Shaun don't follow you, where is the issue? Ta

you cant install any thing unless your a certified unvented(low pressure) tech

 

[Best]

OK, so if I was to go to a low pressure sealed how would the attached look in terms of the system diagram/setup, again please excuse the ignorance...


View attachment 22250

Why ask those details? Get a heating engineer to sort it. The diagram is not strictly correct IMO.
Also, the expansion vessel should be sized just more than required, - not guessed & oversized.

 

[ShaunCorbs]

Why ask those details? Get a heating engineer to sort it. The diagram is not strictly correct IMO.
Also, the expansion vessel should be sized just more than required, - not guessed & oversized.

thinks someones trying to do it them-selves

 

[Best]

you cant install any thing unless your a certified unvented(low pressure) tech

Only on unvented mains units above 15 litre, Shaun.

 

[Best]

In what way is it the "wrong type"?

Wilo 50 pump on that boiler. Won't cope.

 

[ShaunCorbs]

Only on unvented mains units above 15 litre, Shaun.

yea chances are the cylinder is gone/ needs to be changed so thought while the cylinder is out change the whole system to an unvented one, but op can take hes chance with the old cylinder if he wants

 

[uwavetv]

OK, well I do not intend to DIY but I was trying to gain a bit of knowledge to be able to speak with some limited knowledge to the engineer when he comes out to try and give me some confidence in their ability giving my experiences in the past unless there is some way of recommending someone in N Ireland? Are certified listed reliable?

 

[Best]

thinks someones trying to do it them-selves

And really an easy job for an experienced engineer who gets to look at system first.
Shouldn't cost much.

 

[ShaunCorbs]

have you asked friends and family who there heating engineer is/ who do they recommended ?

 

[Best]

OK, well I do not intend to DIY but I was trying to gain a bit of knowledge to be able to speak with some limited knowledge to the engineer when he comes out to try and give me some confidence in their ability giving my experiences in the past unless there is some way of recommending someone in N Ireland? Are certified listed reliable?

I don't think it is something that needs any special qualifications or certificates.
In my opinion, getting a good engineer from a list, is just a lottery. Plenty of people have now got qualified, but little experience. And experience doesn't mean honestly.
If you find a tradesman who is honest & knows how to do work properly, - you are lucky.
Try putting your approx area up here & someone might be able to help you.

 

[Best]

have you asked friends and family who there heating engineer is/ who do they recommended ?

:smile: Still a lottery though! We have all heard someone recommending a "plumber" because he was so good and us knowing the opposite was true.

 

[ShaunCorbs]

I don't think it is something that needs any special qualifications or certificates.
In my opinion, getting a good engineer from a list, is just a lottery. Plenty of people have now got qualified, but little experience. And experience doesn't mean honestly.
If you find a tradesman who is honest & knows how to do work properly, - you are lucky.
Try putting your approx area up here & someone might be able to help you.

but still i would want a g3 engineer to so the work least all my prv would be located right, aav would be in place and expansion vessiels would be sized correctly

 

[ShaunCorbs]

:smile: Still a lottery though! We have all heard someone recommending a "plumber" because he was so good and us knowing the opposite was true.

yea but isnt life a lottery these days with any trades

 

[uwavetv]

Yea, I just though some "basic" knowledge would perhaps mitigate the lottery effect...

 

[ShaunCorbs]

Yea, I just though some "basic" knowledge would perhaps mitigate the lottery effect...

might give you an idea

[video=youtube;yfroidsk5BM]https://www.youtube.com/watch?v=yfroidsk5BM[/video]

[video=youtube;XIY_T6mx7KM]https://www.youtube.com/watch?v=XIY_T6mx7KM[/video]

[video=youtube;m1repkd1HHc]https://www.youtube.com/watch?v=m1repkd1HHc[/video]

 

[uwavetv]

Yea, watched all his vids, they are very well explained and v helpful for understanding the basics..

 

[gassafe]

Can't stand that guy

 

[Best]

I think most of those videos are done by people that love themselves.
Probably they fancied being film stars, but it didn't work out for them.
Plenty of videos out there that are giving stupid advice.
Therefore bit of a lottery getting the truth from a video. :smile: