Central heating pipe configurations

  • Thread starter Deleted member 137318
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D

Deleted member 137318

Hello, I have searched for an answer in the Wiki but can seem to find a topic to cover it - hopefully someone can put me straight?

We are having an extension built that will include 3 new radiators. The boiler and pump are up to the task of supplying the new rads but the question I have is about the pipe configurations.

Is it OK to just tee into the current 22mm flow and return pipes to serve these three rads or should I try to locate the first and last rad on the existing circuit thus creating a 'proper' circuit with a beginning and an end?

This diagram suggests that just teeing into the 22mm flow & return is OK (pretend if you like that the ground floor is my new extension). In my head though, I imagine the flow just bypassing the 'teed' off part - leaving cold rads.

This diagram (excuse the shoddy editing), to me, represents to correct way. Am I worrying needlessly?


Cheers
 
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Deleted member 137318

Many thanks for the quick response - much appreciated!
 
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unless immistaken your heating return is teed in after the HW return which could cause reverse circulation in the rads. The HW should be the last tee on the return
 
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unless immistaken your heating return is teed in after the HW return which could cause reverse circulation in the rads. The HW should be the last tee on the return
I can only see one common tee.
 
D

Deleted member 137318

Apologies, the drawing is very crude. It was more to illustrate what I was trying to describe rather than provide an accurate layout.

The important thing is that I can simply tee into the existing flow/return and balance the rads accordingly - which kinda raises another question: all the new rads (and the old ones - eventually) will have TRVs fitted. Will this make balancing the system difficult seeing that I won't have control over the flow rate to each rad?

should this be a new post or is it OK to continue in this thread??
 

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