Embed Notice

I also found some obvious after-the-fact add-on patches from the control box to the valves that turn on the hot water to the floor pipes in each room.

It looks like the original design was one power/control wire per room, actuating 1-2 valves per room. But we have a weirdly shaped giant living room that uses 4 valves, so they had to use two wires for the living room and patch in an additional control connection. Those wires are zip-tied on to the main zip-tied bundle.