We have just had a planning department concern about our planned install of a 7kW Vaillant. They have siad we dont have permitted development rights because it was not included in our submission. It was clearly shown on the drawings as located on the south side of the house.

Regardless, the only question i cannot yet answer from the Class G requirements is the size of the compressor. I have seen this written down somewhere and am currently scanning all the Vaillant literature i can find. But does anyone have a link to where i might find this parameter please?

 

Thanks as always

keith

Ok it appears to mean the volume of the entire outdoor unit so we are good.

AFAIR it is only the 10 and 12 kW that need express PP, the others qualify for deemed PP (unless part of a new build IIRC).