I’m an apprentice doing a new build 1st fix, 3 bedroom house with an en-suite, bathroom and wc. Has a heat only boiler and a thermaq 180l cylinder but I’ve never piped up for a cylinder on a 1st fix and have no idea what I’m conneting in to what apart from the flow from the boiler straight to the cylinder and the mains straight to the cylinder as they don’t tee in to anything, any help would be massive ahhaa thanks