Yes, that is the basement heat zone thermostat for the AquaHot. I've mentioned a few things that I would have liked to have seen in the Anthem to Tadd. He did bring up that RVs are a collection of nickles and dimes and that every little thing does add to the price so it's always a balance between features and price point.
The manifold itself is only a hundred bucks but the real cost comes in with the runingof the pex lines. In a non-manifolded system you just link most of the branch lines to a big loop. With a manifolded system every line goes to that basement manifold so the labor cost does go up.
Still, I would like to have it.