vern spoke to WB this afternoon and was sent a PDF of their recommended system install plan using their LLH. i have attached this PDF. On page 11 of this PDF it shows a full system diagram of how to hookup this LLH.
From what you described earlier about distribution to the underfloor heating manifolds on the secondary flow and return; as i mentioned earlier i have 3 heating manifolds and all the ports on the LLH on the secondary side would be used on the 2 branches for the first 2 manifolds (ground floor and first floor), so how would i connect the 3rd (last) manifold (the loft rooms) using this WB low loss header?
Also since each underfloor heating manifold has a circulating heat pump on its own corresponding manifold can i omit the heating pump in this WB plan just before their Radiators are, i.e where the corresponding new underfloor heating manifolds will be situated? oh no just realised you can't attach the PDF as it is too big a file
i hope you know what i mean though