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new system?

Andy_14
Andy_14 Member Posts: 121
in THE MAIN WALL
Can I please get opinions on this. I am planning a new install(which I am going to use a radiant designer) and want to have an idea of the best way to do it, so my input in the design can help.

This will be 1 open space building, 1 zone, bare concrete slab. I was thinking of using a taco rmb, icma manifold, safelink pex, and a takagi wall hung water heater.

Do I need another circ pump?

Is a taco rmb a good choice or would I be better off another way?

Any opinions are appreciated.

Comments

  • Tony_8
    Tony_8 Member Posts: 608
    RMB

    is a good product. It simplifies VSI pumping. What is an icma manifold ? I would put the Takagi money towards a real boiler. How big is the space to be heated ?
  • Ted_9
    Ted_9 Member Posts: 1,718


    Why not let the radiant designer decide what will work best.

    PATRIOT HEATING & COOLING, INC.
  • Andy_14
    Andy_14 Member Posts: 121


    The space is aprox. 32' x 70'
    The ICMA manifold is
    Nickel Plated Bronze
    2 - 12 circuits
    Temp gauge on both supply & return.
    Flow meters
    Auto air vent & boiler drain
    1" isolation ball valve on supply & return
    Universal 1/2" Compression Adapters (fits - Safelink, Vanguard, Wirsbo, Roth, Rehau...) optional 3/8" and 5/8"
    Factory tested O-ring Construction
    User friendly mounting brackets with neoprene bushings
    Optional electronic actuators per circuit

    As for the takagi... I wanted to go with a condesing,modulating boiler but the designer suggested a water heater would be better for my application.

    The reason not to just let the designer decide the best way is because...no doubt their is many ways that will work just fine, but some may work better than others and the more I know about it the better chance my input or ideas may help the final product. Example: After talking with the designer I have learned about the taco rmb(which he didn't suggest in the plan) and thought it may be a good idea. That's why I'm asking questions.
  • Tony_8
    Tony_8 Member Posts: 608
    well...

    If it were mine, I'd use an Ultra or other condenser with modulation and outdoor reset and the RMB is not needed. Pony up the cash now and count your blessings for the rest of your ownership of that building.

    I can't put it any simpler or straighter than that.
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    pretty sure the...

    Takagi is a less than good chioce for the heat source... you will need some big circulator to push the water through the head in the water heater. It is designed to have cold water at the inlet not 100F...What is the heat loss? a wall hung W-M ultra, munchkin,NTI Trinity, monitor or Buderus would be better choices...just re-think and see if you can dobetter for a bit more money...kpc

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  • Andy_14
    Andy_14 Member Posts: 121


    heat loss is around 60K btu's/hr. My choice after some research was the trinity t-150. but the person doing my design didn't think that was a good choice because of the low water temps needed. my application is a bare concrete slab.
  • Ted_9
    Ted_9 Member Posts: 1,718


    Condensing boilers and take the lowest of return water temps. They operate more efficiently this way. Tis true, if you go with one of these condensing modulating boilers with outdoor reset, thats all you'll need.

    PATRIOT HEATING & COOLING, INC.
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    the trinity...

    is DESIGNED for space heating...the Takagi is not...Are you going to use the sentry control...that is resetable...kpc

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  • Tony_8
    Tony_8 Member Posts: 608
    Contradiction

    Trinity not a good choice because of low water temps ? But a Takagi is ? The Takagi isn't designed for the return temps it'll see in this application, it's designed for much colder. You'll have trouble with short-cycling, head resistance, etc.

    I think your designer needs "edumacation" in proper application of equipment :)
  • Andy_14
    Andy_14 Member Posts: 121


    This is exactly why I am trying to learn myself. Too many differing opinions. The person I plan to use(I guess it wouldn't be right to say his name) does post on this site all the time.
  • Tony_8
    Tony_8 Member Posts: 608
    well then,

    I guess I'll be very popular with him now !
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    Don't mention....

    his name..it doesn't matter. We can discuss and argue ideas...thats how we learn. From the experiences of others here with the Takagi and the like used as boilers, most have not been all that great...I suppose they have a place as everything does...kpc

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