2021 Tab 400 Nautilus Plumbing Diagram / Schematic

TomCanada

So as I await the arrival of our 400 in the spring, I've been consuming guides and manuals and find the Nautilus documentation somewhat lacking in clarity.  I therefore put together a plumbing diagram from what I could gather from the documents and other threads here.  I think everything makes sense according to the docs, but like other threads mention, the sanitize setting definitely seems to be wrong in the Nautilus documentation.  To prevent chemicals like bleach from entering the hot water heater when sanitizing (possibly damaging the heater), you'll want the red lever in the horizontal 'bypass' position, not vertical.

Can anyone sanity-check the diagram below?  Since I don't actually have my TT yet I'm unclear where the backflow prevention valves are even located (I assume there's one at the city water inlet, but not sure where else) & have no way to check - if anyone has suggestions/updates to the diagram let me know and I'll be happy to update and post here if it's useful!

edit: (removing old/erroneous diagram pasted here - see @bergger's thread linked below for updated discussion..

bergger

No the sanitize diagram is correct.  Just confusing.  In that setting nothing will go into the side and nothing will go into the fixtures or lines.  It just goes directly to the water tank.  The diagram makes more sense if you have the manual to read.  Here is another thread.  https://tab-rv.vanillacommunity.com/discussion/12169/winterizing-question-2021-tab400#latest