Page 3 of 5 FirstFirst 12345 LastLast
Results 27 to 39 of 59
  1. #27
    Join Date
    May 2012
    Location
    Upper Michigan
    Posts
    3,588
    I wonder what ratio of glycol? Anyone who has tried to pump 100% in a system know how bad it foams. My original confusion was I thought he said he was running Dom and space but on a closer look its obviously not. With that said the water boiling sure sounds likely, I don't have the manual so I can't say for sure on the piping but fire control had that solved. I bet pump size could be a factor with the high pressure drop, or boiler pressure.

  2. #28
    Join Date
    Jan 2013
    Posts
    23
    Quote Originally Posted by BadgerBoiler MN View Post
    The tank-less water heater is flashing to steam for lack of flow. I assume this is an "open" system, running potable water through the floor? How did you size the pump? Low-mass water heaters and boilers should be pump to rather than from followed by the expansion tank and air eliminator.
    Its a closed loop

    Taco 10 pump was calculated by a professional using some fancy software

  3. #29
    Join Date
    Jan 2013
    Posts
    23
    Quote Originally Posted by Joehvac25 View Post
    I wonder what ratio of glycol? Anyone who has tried to pump 100% in a system know how bad it foams. My original confusion was I thought he said he was running Dom and space but on a closer look its obviously not. With that said the water boiling sure sounds likely, I don't have the manual so I can't say for sure on the piping but fire control had that solved. I bet pump size could be a factor with the high pressure drop, or boiler pressure.
    50/50

  4. #30
    Join Date
    Aug 2012
    Posts
    2,663
    I would question the quality of the wiring job looks like dyi to me.
    My name is TooCoolforschool and I am a chronic over charger.

  5. #31
    Join Date
    Jan 2013
    Posts
    23
    Wiring is temp.

  6. #32
    Join Date
    May 2012
    Location
    Upper Michigan
    Posts
    3,588
    What pressure are you running?

  7. #33
    Join Date
    Aug 2012
    Posts
    2,663
    Quote Originally Posted by Greg555 View Post
    Wiring is temp.
    Why?
    My name is TooCoolforschool and I am a chronic over charger.

  8. #34
    Join Date
    Jan 2013
    Posts
    23
    Quote Originally Posted by toocoolforschool View Post
    Why?
    Because Im still building it and the system doesnt work yet

    What if I have to move the pump? Am I gonna redo the wiring?

  9. #35
    Join Date
    Jan 2013
    Posts
    23
    I tried anything from 15 to 45psi

    Bosch recommends 29-70psi

    I wasn't sure if the higher pressure is required for the unit to turn on

    Greg

  10. #36
    Join Date
    May 2012
    Location
    Upper Michigan
    Posts
    3,588
    The units have a really high pressure drop through them that's why they take a special pump, if you had a pressure gauge on the outlet and inlet it would tell you more.

  11. #37
    Join Date
    Jan 2013
    Posts
    23
    Quote Originally Posted by Joehvac25 View Post
    The units have a really high pressure drop through them that's why they take a special pump, if you had a pressure gauge on the outlet and inlet it would tell you more.
    I bought 2 but 1 one was only installed on the cold side

  12. #38
    Join Date
    Jul 2000
    Location
    Northern Wisconsin
    Posts
    2,013
    Quote Originally Posted by Greg555 View Post
    Its a closed loop

    Taco 10 pump was calculated by a professional using some fancy software
    Whoever it was, either didn't have the correct information to input into the "fancy software", or their professional status is in another field other than hydronics. Why? Because the capabilities of the pump you are using fall far outside of the conditions you have it installed in. That's according to the Taco software that I use to design or verify every hydronics/radiant system I build or work on.

    And before you ask "then what pump should I be using", let me once again stress that supplying that information would be in direct violation of the posted rules that I agreed to when I was granted permission to post here as a pro.
    Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.

  13. #39
    Join Date
    May 2012
    Location
    Upper Michigan
    Posts
    3,588
    I would call some company's and find one that deals with lots of hydronics.

Page 3 of 5 FirstFirst 12345 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event