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20 Years Later

Dan FoleyDan Foley Member Posts: 1,211
I went back to a job we did in 1999. The house was recently sold and the new owner wanted maintenance and repair work done.

This was one of my first “big” projects. It is approximately 22k sq ft.

Dan Holohan walked this job while it was still under construction and wrote a column about it.

My techs have worked here over the years but it had been many years since I had been on site. It was interesting to go back into time and review the job and see what I would do differently if given a second chance.
ethicalpaulSolid_Fuel_ManErin Holohan HaskellIronmanRich_49delta T


  • Dan FoleyDan Foley Member Posts: 1,211
    The entire house is radiant We also did the ac, ventilation, snowmelt and pool heat. We also did the mechanical systems in a detached carriage house, pool house and horse barn.

    They brought in a contractor from Lexington, KY to build the horse barn. I’m not kidding when I say the horses live better than I do.

    Four MZ boilers power the systems. One is no longer operational and has been robbed of parts. This is first on my list for an upgrade.

    There are many things I would do differently now but it has held up well for two decades.
  • Dan FoleyDan Foley Member Posts: 1,211
    edited May 2019
    We put in miles of this radiant tubing back in the ‘90s

    Bonus points to whoever can identify this brand of tubing.

    Hint: the company is still in business but they pulled out of the radiant market shortly after this project was completed.
  • Solid_Fuel_ManSolid_Fuel_Man Member Posts: 1,954
    edited May 2019
    Nice clean install! The radiant and condensing equipment sure was a lot different here in the US 20 years ago. Glad the rubber tube was pretty much out by 1999.

    It's not Heatlink tube is it?
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
    Dan Foley
  • bob eckbob eck Member Posts: 915
    What brand condensing boilers are on this job?
    Are they the original boilers?
    What type of heat exchanger is in these boiler?
    Are the boilers natural gas or LP gas?
    I take it the boilers had yearly maintenance.
    How did the PVC venting hold up?
    What brand radiant pex tubing did you install?
  • RayWohlfarthRayWohlfarth Member Posts: 802
    @Dan Foley nice looking job for your first one. The best lesson is to charge more LOL
    Ray Wohlfarth
    Boiler Lessons
    Click here to take Ray's class.
    Click here to buy Ray's books.
    Dan Foley
  • hot_rodhot_rod Member Posts: 13,194
    EHT tubing or Stadler?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • Dan FoleyDan Foley Member Posts: 1,211
    edited May 2019
    @ Solid Fuel Man good guess but not Heat Link

    @ Hot Rod close but no cigar

    The radiant tubing was Burnham Radiant

    It was a Pex-C manufactured by Hewing
  • Dan FoleyDan Foley Member Posts: 1,211
    @ Ray Wohlfarth

    Yes, I learned that lesson the hard way. Charge more! Way more!!!!
  • Intplm.Intplm. Member Posts: 1,132
    The pex? Viessmann? In metric?
  • Dan FoleyDan Foley Member Posts: 1,211
    @ bob eck

    These are the original boilers. 3 of 4 are still operational.

    They are Monitor Products MZ boilers. They were among the first condensing boilers widely available in the US.

    Each boiler was 140k btu. Two/stage. They did not modulate.

    They are no longer in boiler business in the US and parts are no longer available.

    We serviced these annually. The vent pipe is actually schedule 80 cpvc. The intake is pvc. We field fabricated the two-pipe kit with a 4” PVC Y and slip couplings as MZ did not have a kit at the time.
  • Dan FoleyDan Foley Member Posts: 1,211
    @ Intplm.

    It was Burnham Radiant tubing.

    It was manufactured by Hewing. It was metric size.
  • DanHolohanDanHolohan Member, Moderator, Administrator Posts: 14,980
    Thanks for the memories, Dan. Twenty years ago. Gosh.
    Retired and loving it.
  • @Dan Foley I'll bet Pete Caruso liked you.......a LOT!

    Parts are still available! Call Budney Fuel Oil. Talk to Robbie (800)597-6484
    Often wrong, never in doubt.

    Click here to learn more about this contractor.
  • Dan FoleyDan Foley Member Posts: 1,211

    Thanks for the tip. I did not realize parts were still available. We still have many MZ boilers in service.

    - DF
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