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You said: 'It's not clear to me where you are piping the dump zone. It sounds like you want the dump zone aquastat to override the household thermostats and open all the zone valves'
No..the Taco ZVC4000 has provisions for 6 tt lines..I utilize 4, one of which is my basement zone...what I was trying to explain is that I intend to tie the tt line from the control to the existing line for the basement zone ONLY..so just tieing into 1 zone in the controller...
Yes..One of the controls has the well on it...I should be able to just remove it from one and put it on the other, correct?