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Small hydronic system

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Unknown
Unknown
in THE MAIN WALL
boiler are you connecting to Dave ? And why are you using heat only fan coil units ? For the option of adding AC later on ? Sounds like you have a good grasp of the best piping method and there's plenty of info online for diagrams and control strategies . And don't forget about Dan's books as a great resource . I'll let the experts point you in the right direction .

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  • Unknown
    Unknown
    Small Hydronic system

    I am designing a small hydronic system for a two story apartment building. Each apartment will have an above ceiling heating only fan coil unit - First Company. I am looking for advice as to the best piping arrangement. I was thinking primary-secondary, with a pump mounted on the boiler to circulate water through the boiler loop, and a second pump in the system loop, with two way valves, and a single three way valve.

    Any advice about piping and controls would be appreciated.
  • Unknown
    Unknown


    Probably a Raypak or Teledyne Laars boiler
  • [Deleted User]
    [Deleted User] Posts: 1,160
    Sounds like fun...

    You have lots of options too. If there is a need for AC, why not got to a small packaged water source heat pump. Small system with a 4 way reversing valve could keep a bunch of mod cons in perfect condensing mode when necessary, and when you need cooling, you could tie it into the snowmelt system for the building...

    You could also depend on the snowmelt system in the shoulder seasons as a good free heat source, if needed.

    BY virtue of their design, water to water heat pump systems have their own method of waste heat recovery. If half the building is on heating, and the other half is on cooling, the loop just swaps it from one side to the other.

    The ultimate waste heat recovery system if you will...

    But the owners probably don't want to spend that much money... Like the cost of ownership is going down...

    If our government would get their feces in square piles, and realize that from a tax advantage, it is better for a business to buy less efficient equipment because the cost of heating is a cost of doing business, and that's a total write off...and give them some serious reasons to conserve, like doubling the saving back to them in the form of a tax credit or somesuch, maybe people would get serious about their equipment expenditures and start doing it right for the long term...

    And you can bet that solar and heat pumps will be right in there. Has to be.

    ME
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