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wiring help

ed wallace
ed wallace Member Posts: 1,613
need help on wiring have 2 hydro air air handlers piped for a/c and heat plus 2 zones of baseboard the idea is on mild days hydro air will heat housw on cold days baseboard will heat house maybe use hydro air as back up heat source what do i need to get this working perferably using a digital tstat

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Comments

  • Ted_9
    Ted_9 Member Posts: 1,718


    Get 2 stage heat 1 stage cooling digital programable t-stats.

    You BB is the 1st stage and the hydro air is 2nd stage right?
  • Firedragon_4
    Firedragon_4 Member Posts: 1,436
    Look into a hydro-air panel from

    Argo, Honeywell, etc. Saves a ton of time and makes it very easy.
  • ed wallace
    ed wallace Member Posts: 1,613
    wiring help

    yes baseboard is 1st stage hydro air is second stage what i need is a wiring diagram to make it work

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  • don_42
    don_42 Member Posts: 42
    maybe

    > yes baseboard is 1st stage hydro air is second

    > stage what i need is a wiring diagram to make it

    > work

    >

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    > 256&Step=30"_To Learn More About This

    > Professional, Click Here to Visit Their Ad in

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  • don_42
    don_42 Member Posts: 42
    I

    dont know Bill even with the two stage stat,I would think there will either be some short cycling or one never coming
    on anyway to help out.

    Looking at it where most baseboard emitter is design for
    the coldest day of the year,that to me says that the second stage will never come on unless it goes below design temp.

    Unlike a heatpump that loses some capacity as it get colder,that why we have to design around balance points or
    we have to stage the equipment internally,gas valve and
    variable motors if you will.

    Even if you get lucky and can find a two stage split subbase
    tsat,or you sure they make one to bring the fan on thru the
    second stage?

    I guess what I'm trying to say is if both system were design
    for the coldest day of the year,then why even have a setup
    like this?

    I know and it stink,you need one for true comfort and one for indoor air quality,whats a man to do?

    Thanks Bill for the post,and I not trying to be a butthead
    with my question..Just trying to understand why people feel
    that they need two heatplants,and how they go about there
    design to make them complatible between the two.
  • Mitch_4
    Mitch_4 Member Posts: 955
    Some questions

    Are the 2 air handlers going into 1 duct system? or 2 separate duct systems. And is your boiler sized to run all 4 zones simultaneously? ie the fan coils will add supplemental heat to the BB system in the 2 zones should they not keep up. If the boiler is too small, it won't work

    I too do not understand the methodology behind this system.

    Can you clarify?
  • Joe Mattiello
    Joe Mattiello Member Posts: 703
    Taco, HAFC control panal

    Try the Taco, HAFC control to facilitate the wiring for the air handlers. For your convenience I have attached the catalog, and submittal data information.

    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    [email protected]
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • Paul Rohrs_2
    Paul Rohrs_2 Member Posts: 171
    Work with me on this.....

    I threw a JPEG together on my Visio program. I put the baseboard heat (zoned by circulator) on pumps P1 and P3 and have used a tekmar or Wirsbo 512 series 2-stage control. The baseboard will be the 1st stage of heat on heat control or zone, then the air handlers will be the backup andor 2nd stage of heat. For the sake of time, I did not detail out the air-handler wiring from the fan control (CRYGG). Let me know If I can change a detail or two to make it work more towards your application. We could easily put on an EXP series pump relay or tie in a reset control for the baseboard.

    Regards,

    PR
  • Paul Rohrs
    Paul Rohrs Member Posts: 357
    Still thinking about this.

    Revised the drawing a bit. Don't know if you are zoning the baseboard with zone valves or circ's.

    regards,

    PR
  • ed wallace
    ed wallace Member Posts: 1,613
    wiring diagram

    that is exactly what i need nowif i can figure out how to make it a bit smaller i can print it out
    thank you Paul

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  • Mark J Strawcutter
    Mark J Strawcutter Member Posts: 625
    as I reread your original post

    it sounds like on mild days you want the hydro-air to be primary but on cold days you want it to be secondary?

    Mark
  • Mark J Strawcutter
    Mark J Strawcutter Member Posts: 625
    how does this meet the requirement

    that on mild days the hydro-air will heat the house?

    Mark
  • ed wallace
    ed wallace Member Posts: 1,613
    wiring help

    i can live with the way that wiring diagram is set up the hydro air can be the 2nd stage of heat

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This discussion has been closed.