I finally got around to starting the plumbing.

Actually this contraption, that looks like the control deck of a submarine, is the 'nerve center' of my plastic plumbing system. I hope I'm using the French equivalent of top quality barrier pipe Steve ?

From now on new runs are going to be dead easy as I just attach the length of pipe to the manifold and run the other end to the appliance, turn on the valve and voila, water. Yep, that thing is now full of water at 5 bar.

The reason there are more cold feeds than hot are because of toilets, dishwasher and washing machine. Also the strange brass things at the end of each manifold is an anti-knock device to prevent water hammer. Not sure it's really needed, but why not.