Planning for ASHP pipes through external wall

[Adam2]

Building plant room walls - ASHP will sit on the ground just outside the plant room - I expect <1m of pipe outside the plant room. Would appreciate suggestions on planning for this wall penetration - walls will be ICF with 200mm core so don't want to core drill after. Should we install a pipe dia of 60m so could have 2 x 28mm pipes + space for power and control then later foam around the pipes in the wall and insulate them on the outside? or install a short run of the pre-insulated pipes? Ideas appreciated

cheers 

[TonyT]

100mm hole through the wall, suitably sleeved with plastic pipe, with fully insulated pipes passing through penetration, not stop and start insulation.

cabling through same hole.

expanding foam applied, cut back and then taped over.

 

 

[Conor]

Yep, as above. We made numerous ducts though the walls using 110mm PVC pipes. A single opening for three services is easier to seal than three separates ones. If you don't use them, ease to seal up and cover over. 

[Adam2]

Great nice and simple