Thanks again for the help.
I'm not sure why I would need to add anti-freeze to the system if I can just drain it completely. With no water, there's nothing to freeze. Pex can handle below freezing temps, even with water inside, so I'm just not sure why I need to fill it all with AF.
Stinks having to climb a new learning curve, but I do appreciate the help.
I'll investigate the limit switches. I suppose I should check to see if there's one already installed.
Fun stuff.
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