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  1. Hello again. I wanna thank everyone for their...

    Hello again.

    I wanna thank everyone for their suggestions (except toocoolforschool )

    I changed the pump to 11, diluted the coolant and is been running fine for the last 3 hours.

    I hope its...
  2. I will delute is to 20-25% Im in Chicago

    I will delute is to 20-25%

    Im in Chicago
  3. I guess I didn't think much about it. Lowest...

    I guess I didn't think much about it.

    Lowest I seen my thermocouple buried in Concrete showed 32F
  4. Do me a favor and un-follow this thread Thx

    Do me a favor and un-follow this thread

    Thx
  5. Every "Expert" I talk to sayz that the other guy...

    Every "Expert" I talk to sayz that the other guy doesnt know what he's talking about.
    Story of my Hydronics life

    Greg
  6. then thx for nothing

    then thx for nothing
  7. I bought 2 but 1 one was only installed on the...

    I bought 2 but 1 one was only installed on the cold side
  8. I tried anything from 15 to 45psi Bosch...

    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
  9. Because Im still building it and the system...

    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?
  10. Wiring is temp.

    Wiring is temp.
  11. 50/50

    50/50
  12. Its a closed loop Taco 10 pump was calculated...

    Its a closed loop

    Taco 10 pump was calculated by a professional using some fancy software
  13. I don't really care about the warranty. I can...

    I don't really care about the warranty. I can even drain it for the summer out of coolant and flush it.
  14. as far as glycol in the system and also says in...

    as far as glycol in the system and also says in this manual that it will decrease the warranty on the heat exchanger. It also says 1 can use this heater for a radiant heat installations.I even went...
  15. What page? Thanks Greg

    What page?

    Thanks

    Greg
  16. I have no clue what you're referring to Looking...

    I have no clue what you're referring to
    Looking at the manual and cans see anything wrong

    It has 6 items listed under Limited Warranty/Exceptions and I dont see any of them applying to my...
  17. No - closed loop glycol

    No - closed loop glycol
  18. Air separator works fine. I can hear it work...

    Air separator works fine. I can hear it work after I do something with the coolant.

    Pump is in the correct flow position and flow check valve is not stuck.

    Sound is not the pump. Pump has this...
  19. u saying it would be better if the pump was after...

    u saying it would be better if the pump was after the boiler?

    Can these Taco pumps go bad? I bought it new. It probably got 1 or 2 hrs on it
    Sometimes boiler doesnt want to turn on like theres a...
  20. yes Works fine when I pass tap water thru...

    yes

    Works fine when I pass tap water thru isolator valves and when I switch to the loop it makes the noise.

    Thx
    Greg

    PS. This system was not installed by me. It was done by a certified HVAC...
  21. I read the rules and it said to post questions in...

    I read the rules and it said to post questions in AOP section

    If you cant answer then whats the point?

    I am unable to pinpoint the area of the noise. Unit is pretty small and theres no way of...
  22. Im asking PROs here

    Im asking PROs here
  23. Bosch Therm 660 EF makes horrible noise in simple radiant heat system

    Hallo

    Need help

    Any idea why my tankless bolier makes this horrible clanking noise when used in my radiant floor system?

    When I run tap water thru it (using isolator valves) everything is...
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