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Posted by Mike on February 11, 2008 at 13:12:22:
I've got 7 zones to control and a boiler. I've got a Taco SR504 and a Taco 503 to control 7 zones (two separate boxes, one box will control 4 zones, the other controls 3 zones) How do I wire the end switches (TT) on the 504 and 503 back to the boiler?
They both need to tell the boiler to kick on, do they get tied together somehow?
Thanks for your time.