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Control for heating/cooling heat pump with radiant zones and set point air handler?

spdspd Posts: 22Member
I am hoping to get some advice on what controller I should use for an Allerton redo as in, eliminating the Allerton because this is merely a one family home that wants some control over their climate situation. It is a Passive house with heating/ cooling via solar thermal and/or heat pump through a 2 coil tank. 4 radiant zones and a fan coil that kicks on when demands are high. Plus, I would like 2 way communication through mod bus or bac net. Maybe Tekmar 557? Anyone ever had a situation like this or any hits or misses I should know about?

Comments

  • hot_rodhot_rod Posts: 11,672Member
    I think the tekmar platform can handle all that logic.

    Find a dealer or the local rep to help you with the component selections.

    The tekmar website is one of the better for explaining control and logic for them.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • SWEISWEI Posts: 7,356Member
    Are you saying there's an existing, installed Alerton DDC system? That's a fair bit of money invested by someone. Is the dealer not cooperating?
  • spdspd Posts: 22Member
    The builder was making a luxury passive house and accidentally invested a few tons of money in the control system. The dealer charges a huge rate to change settings. We corrected some stupid mistakes on the voltage wiring but also wrong contact connections! They, the owner, (common travesty) don't even know how to log in and adjust settings. If I could get in and master the system I could save them a lot and I would have fun. The builder is fed up and wants me to trace the wires and out in aa whole new set up.
  • SWEISWEI Posts: 7,356Member
    That's really unfortunate. Where is this job located?
  • spdspd Posts: 22Member
    Brooklyn NY
  • SWEISWEI Posts: 7,356Member
    Have you tried another Alerton dealer?
  • spdspd Posts: 22Member
    I am going to count that as good advice but the builder can't handle any more third party messes. I'm expecting my tekmar rep to more helpful especially since I took the class some years ago.
    Time is money unfortunately.
  • hot_rodhot_rod Posts: 11,672Member
    spd said:

    I am going to count that as good advice but the builder can't handle any more third party messes. I'm expecting my tekmar rep to more helpful especially since I took the class some years ago.

    Time is money unfortunately.

    The rep might be Rathe and Associates on Long Island? If you can pin him down, Don Rathe is one of the sharpest tekmar guys out there. He keeps a lot of inventory to back up dealers also.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • spdspd Posts: 22Member
    Yes, Rathe. Thanks for the referral. It's a pretty fun job actually, I am up for the challenge. I'll follow up on this post with updates.
  • SWEISWEI Posts: 7,356Member
    There's almost always a way to do it using Tekmar, but larger and more complex systems can require integrating quite a few of their controls and modules. As long as the customer has the wall space and doesn't mind the cost, you should be able to make them happy.
  • spdspd Posts: 22Member
    SWEI if you need a travelling solar thermal installer let me know but If you're lucky you know Larry Napes who lives in New Mexico.
  • SWEISWEI Posts: 7,356Member
    I don't recognize the name, so Larry must be up north someplace. Santa Fe or Taos perhaps?

    Small town, small jobs here. Working on a new single-tank drainback system (residential) that we hope to bring to market, but that's going to take some time.
  • spdspd Posts: 22Member
    Cool. Val Verde I think. Awesome about the drainback, nice to 'meet' you. Jessica
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