I should start by saying, this is for an installation in Scotland (i think the regs maybe slightly different up here?)
Is it still permissable to install an SE Combi, rather than an HE Combi?
& is there a minimum clearance between the flue on a HE Combi & a window?
Is it still permissable to install an SE Combi, rather than an HE Combi?
& is there a minimum clearance between the flue on a HE Combi & a window?