Secondary Return Advice

[Daniel 12233444]

I'm running a secondary return hot water system and I'd appreciate your advice please.

I'm working on a long house where the furthest draw off point Is around 40m away from the unvented cylinder. There are 3 bathrooms 2 kitchens a boot room and a utility. I have installed a 28mm hot supply through the property reducing down along the way. I have taken the hot water return in 15mm and brought it out near each outlet so basin nearly all the outlets have 2 hot pipes 1 flow and 1 return. I'm worried I've overcomplicated it and should have not taken 2 pipes to the outlets for the hot.

The cylinder will have a bronze pump and check valve.

I'd appreciate your thoughts. Thanks guys

 

[EvilDrPorkChop]

Is it all done in copper? Remember you can't use plastic on a circulating return.

Personally I'd of just brought a return back from the furthest point, just ensuring each draw off is close by to the main feed.

However I don't see any issue in what you've done, as it will just circulate around.

 

[ShaunCorbs]

Need balancing valves eg lockshield gate valves on each of the src tees from the hot

 

[Scott_D]

It will take the easiest route so may not circulate to the furthest point

 

[Racheal1256]

Is it all done in copper? Remember you can't use plastic on a circulating return.

Personally I'd of just brought a return back from the furthest point, just ensuring each draw off is close by to the main feed.

However I don't see any issue in what you've done, as it will just circulate around.

Apologies for jumping on this thread but I’m having similar issues. Is the copper pipe a must under building regulations (I’ve just purchased a new build property with plastic pipe on secondary return) if so, could you link me to the regulation.
Many thanks

 

[ShaunCorbs]

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3rd one down

Uponor, Mlcp and copper are rated

 

[Ben-gee]

If your secondary return operates on a timer it may be ok
The definite no no is for a continuously operated secondary return system - usually this is unnecessary in a domestic setting.

 

[Lou]

(Just bumping a few older threads, they will drop off what is new soon)

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