Adding a zone to my Hot water heat system

Discussion in 'HVAC Heating & Cooling' started by rockycmt, Nov 13, 2007.

  1. rockycmt

    rockycmt New Member

    Messages:
    129
    Location:
    New York
    I curently have a 3 zone system. 1 zone is for an indirect hot water heater and the other 2 are heating zones. I would like to create 2 more zones. The zone valves are honeywells. They are 24volt vales and my system has 1, 24 vold transformer. I was wondering home many valvas I can run off that transformer? Is there a limit? I want to avoid adding to the exixting loops as to not create a long run.

    Thanks,
    Chris
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,019
    Location:
    New England
    the spec sheet for the valves will have a VA or wattage. Add them up, and compare with the available current for the transformer...you might be okay, but you may need a bigger one.
  3. Steven62

    Steven62 New Member

    Messages:
    9
    Location:
    Missouri
    adding zone

    If you still need help with this, give the guys at Watts Radiant a call. Ask for Hydronic technical help. 800-276-2419
    They will help you design the best option!
  4. rockycmt

    rockycmt New Member

    Messages:
    129
    Location:
    New York
    Thanks for that contact. I will try it.

    Also,
    Out of my boiler I have threaded iron pipe(I guess). Can I convert it to 1 inch copper to add 2 zones. I am very familiar with sweating copper and rather do that then rent a threader to build off the current manifold.
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