ASHP Flow and Returns

[richo106]

Hi

 

We are having an ASHP installed in our renovation project and the contractor has requested 2 x 28mm insulated main flow and return pipes from our plant room to ASHP outdoor unit. (See attached pic)

 

They said it’s better under the floor, we are having a complete new floor put in, 200mm hardcore, 150mm concrete slab, 200mm PIR, UFH pipes, 50mm screed.

 

whereabouts within the floor would you put these pipes? Would you put them in a duct incase they need replacing or anything?

 

Any advice or information greatly appreciated 

 

Many Thanks

[TonyT]

I would swap the WC and plant room about and no worries about underground pipes, just straight through the wall..

[ProDave]

I would run the ASHP pipes, and don't forget cables as well, within the thickness of the wall between plant and living room.  Assuming it is a stud wall?

 

It is a brave plumber and electrician that wants to drill the holes for pipes and cables before the ASHP is on site.  Last one I did we waited until the ASHP was there before drilling holes and running cables and pipes.

[richo106]

  On 03/09/2022 at 19:21, ProDave said:

I would run the ASHP pipes, and don't forget cables as well, within the thickness of the wall between plant and living room.  Assuming it is a stud wall?

 

It is a brave plumber and electrician that wants to drill the holes for pipes and cables before the ASHP is on site.  Last one I did we waited until the ASHP was there before drilling holes and running cables and pipes.

Expand  

Good idea, it’s not a stud wall it’s a block wall.

 
I can just stud the back wall of the WC anyway to house the pipes and cables as required