I need to replace my 2 zone valves, and thought of a couple 'enhancements' while I'm at it...
The black shows my current plumbing. There are 2 operable zones, plus the basement always runs with either of the other 2.
My main/only restriction is that I don't want to move the top of the current 5 return lines left or right, and don't want to move the return-to-boiler line.
The red shows my "plan".
1. Add a thermostat & valve for the basement zone.
2. One of the halves of the 1st floor zone was extended out to an add-on den. It needs more heat than the main 1st floor, so I want to separate the den into a new zone. It comes in from the left, so I debated running the line across the rest of this and in from the right, where there's more room, or coming in like in the picture.
Any suggestions? Am I doing anything stupid? (haha, that's a setup)