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  1. #14
    Join Date
    Jun 2018
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    15
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    I was mistaken on the Chiltrix price, I thought they were $2-3k but they are actually about $4k.
    http://www.chiltrix.com/documents/price-list.html

    I like it that Chiltrix has the prices right on their website. I spent the better part of the day chasing down MultiAqua pricing.

    You can put 2 Chiltrix in parallel to get 4 tons of cooling for $8400 , still much cheaper than the MultiAqua.

    When I spoke to them, Chiltrix does have a heat recovery option available if you want it , although I'm not seeing it on their website now. I think it was basically the HotSpot unit. https://www.hotspotenergy.com/reside...water-heaters/ . They said they don't really advertise the option because since the chiller runs at a very low power level for most of the time , the heat level at the output of the compressor is not high enough to make the heat recovery very worthwhile. They said they mainly did it because their competitor (not sure if this is MultiAqua or someone else) offers it so they did not want to lose the business. I personally think it would work well for a pool but probably not for DHW.

    At the moment my only waste heat application *is* DHW so my thought is the most bang for the buck is to buy a heat pump type water heater and use this in conjunction with a standard A/C system. The main lure of the hydronic system is the flexibility but not the cost. I like packaged units where the refrigerant is 100% contained with no external lines like with normal split systems.

    The only way I see to reduce the operating cost is to add solar panels somehow... or possibly something like an absorbtion cycle chiller if you have a free heat source.

  2. #15
    Join Date
    Apr 2018
    Posts
    4
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    Thanks for all the research in this thread!

    I too am very interested in the Chiltrix unit, but I haven't pulled the trigger.

    I've also seen this unit, which seems similar but a better fit for my use case vs 2 separate chiltrix units:

    arcticheatpumps .com/arctic-heat-pump-040a-48-000-btu.html

  3. #16
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    938
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    Your forgetting the price of insulated pex, pumps, expansion tank and something for air removal. Can't remember don't the fan coils talk to chiller and don't think there are automatic water shut off valves.If so can you run parallel chillers? Since parts are at a minimum a few days away just might thinking about zoning each system separately.

  4. #17
    Join Date
    Mar 2019
    Posts
    2
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    Quote Originally Posted by servicefitter View Post
    Your forgetting the price of insulated pex, pumps, expansion tank and something for air removal. Can't remember don't the fan coils talk to chiller and don't think there are automatic water shut off valves.If so can you run parallel chillers? Since parts are at a minimum a few days away just might thinking about zoning each system separately.
    I agree, the ancillary costs add up quick. With my system (2900sqft space) it was large enough Chiltrix recommended against an expansion tank but I had to add a second circulation pump. The FCU's don't talk to the chiller, however I'm working on getting mine talking in some way as I have electronic ball valves at each FCU which freaks the chiller out when all of the indoor units turn off (throws a no-flow error code on the CX-34 chiller). I've got some of my experiences documented on YouTube and will be adding more if anyone wants to check it out there. My channel name there is "Beenelife".

  5. #18
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    938
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    I'd like to see how your system is piped. Don't know how your getting away without expansion tank and i thought the primary pump was variable speed.

  6. #19
    Join Date
    Jul 2018
    Location
    Wisconsin
    Posts
    626
    Post Likes
    Had a rash of failed ceiling cassette motors from MultiAqua. They use a low budget motor straight off the boat from China. They last about a year then the bearings fail. We could not find a off the shelve replacement and had to use OEM. We sent a few to our motor supply for repair and analysis. If I remember correctly they were using a high quality bearing but they were overheating. That was over a year ago at a school.

    Sent from my SM-G960U using Tapatalk

  7. #20
    Join Date
    Jul 2018
    Location
    Wisconsin
    Posts
    626
    Post Likes
    Ruamthong was the motor manufacturer.

    Sent from my SM-G960U using Tapatalk

  8. #21
    Join Date
    Mar 2019
    Posts
    2
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    Quote Originally Posted by servicefitter View Post
    I'd like to see how your system is piped. Don't know how your getting away without expansion tank and i thought the primary pump was variable speed.
    Certainly! Here's a quick diagram. I actually only have three FCU's connected right now, ultimately I will have 6 total to cover the first floor of our house.

    I can't post links yet as I'm a new member (understandably so) but I uploaded my diagram to the following location:
    beenelife dot com/images/ChillerDiagram.png

    There is a small expansion tank in the CX-34. Not being an expert I relied on the documentation and just made sure the volume of water in my lines called for no additional expansion tank. The one in the outdoor unit looks to be 1-2 gallons in size.

    As far as I know the primary pump is in fact variable speed, the second pump I connected is the same type and connected to the same control point on the CX-34. Again I trusted the documentation after adding up the restriction in my system that I'd need an additional pump. It does seem to work well.

  9. #22
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    938
    Post Likes
    Your search - beenelife.com/images/ChillerDiagram.png - did not match any documents.

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