Are you a member of the cc?
Additional pump on a combi system
- Thread starter Groovejet
- Start date
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If you mean me, then no. I am not a gas technician; most of my experience was elsewhere, for example, in the area of the flow of fluids in pipes and ducts.
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I only ask, because I do not doubt that you know what you are talking about.
I don't see how you can comment on the content of the cc if you havnt seen it.
There are some of us in there that are very much learning, it is a very large subject. There are also people in there with a huge wealth of knowledge.
You would not get away with posting miss information, if you were a pretender you would be found out, and to anybody working in central heating and gas, it would be a very large asset.
I don't see how you can comment on the content of the cc if you havnt seen it.
There are some of us in there that are very much learning, it is a very large subject. There are also people in there with a huge wealth of knowledge.
You would not get away with posting miss information, if you were a pretender you would be found out, and to anybody working in central heating and gas, it would be a very large asset.
Absolutely, I have only commented that the entry ticket for the CC is a gas qualification in which the syllabus is underwhelming on the subject of calculating gas pressure losses and which contains nothing whatsoever on the subject of pump and pipe sizing for water systems.
Several of the primary/secondary (low los header) pumping systems I mentioned previously in this thread were later fubarred by 'heating engineers' altering the setting of DRVs, simply because they did not understand what they were looking at.
Why not? See some of the posts above. What is different in the CC?
Regarding the original post, the problem may be sludge but, from past experience, I would suspect that the problem is that the pipes AND/OR pump are undersized. You need to check it and estimate what size pipes you should have and you cannot do that on the internet.
or it may be he is trying to run 15 school radiators all piped with 15mm!
But that's my point. Passing your gas qualifications may be the entry level
Engineers that pass the gas qualifications go on to system design, pump sizing ect,. It's by no means just about gas. Gas is a part of what a lot of the guys do, but not all, I wish you could have a peek at some of the threads and posts, it might change your view.
If a spoke is thrown into the wheel in the cc it's thrashed out until the wheel is turning again. It is very different to p& h forum
He has come up with what he thought was a solution, and full credit to him, he didn't just go and throw it in, he sought advice, for that I commend him.
Engineers that pass the gas qualifications go on to system design, pump sizing ect,. It's by no means just about gas. Gas is a part of what a lot of the guys do, but not all, I wish you could have a peek at some of the threads and posts, it might change your view.
If a spoke is thrown into the wheel in the cc it's thrashed out until the wheel is turning again. It is very different to p& h forum
He has come up with what he thought was a solution, and full credit to him, he didn't just go and throw it in, he sought advice, for that I commend him.
As far as pipe sizing goes I just go off no more than 15000 btus off 15mm pipe or no more than say three radiators. That seem to get me where I need to be. 2. Wat are the problems with sticking an extra 15/50 pump on apart from the flow an return temperature being only 5 degree an the boiler won't condens! May get a bit of noise... Surly that would push the heat to the extra radiators?
Now you gone an done it
Let's wait for the onslaught, I was keeping it all polite as well
M
mysteryman
Have they stopped bickering yet?
It is best to sort out the real problem, rather than to try to relieve the symptoms. Your system should be capable of operating correctly without a further pump.
It is best to sort out the real problem, rather than to try to relieve the symptoms. Your system should be capable of operating correctly without a further pump.
G
gaswizzard
Can you explain why the boiler would be "prevented from working properly" bearing in mind the software wont 'see' an increase in flow rate only head due to the pump being fitted in series as opposed to parallel.
Deleted
No bickering. I simply asked why someone might hope to get an answer to a hydraulics problem in the CC.
It depends on how the pump is connected; not in series.
Some of the boiler manuals available in Europe show the boiler connected through a low-loss header with a second pump serving the distribution system. The UK manuals for the same boiler don't have this arrangement.
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