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proper relay setup for 2 zones on 1 stat

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Big Ed
Big Ed Member Posts: 1,117
in THE MAIN WALL
Wire both zone valves to the thermostat with the largest load and reset the antisipater to the new current draw.....

Comments

  • CC.Rob
    CC.Rob Member Posts: 130
    proper relay setup for 2 zones on 1 stat

    For hydraulic reasons, I need to make 2 smaller zones in a space that really only needs one stat. Assuming Taco zone valves and a standard 24V setup, what's the right way to do this?

    thanks.
  • STEVEN MARKS
    STEVEN MARKS Member Posts: 154


    Wire zone valve 1 to thermostat. Wire end switch of zone valve 1 to open zone valve 2. Wire end switch of zone valve 2 to start circulator.
  • Rob_30
    Rob_30 Member Posts: 7


    If they're Taco 500 series, can a Honeywell CTIII handle what I think is 1.8A? (0.9A each)? I thought most stats can only handle up to about 1A. But I'm somewhat ignorant about this. thanks.
  • Rob_30
    Rob_30 Member Posts: 7


    sounds logical. Is this a common situation? thanks.
  • Mike Pfluke
    Mike Pfluke Member Posts: 9


    I think I would splice a single thermostat wire into both zone valves so when the zone's thermostat called for heat both zone valves will open
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