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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...

I will delute is to 20-25%

Im in Chicago

I guess I didn't think much about it.

Lowest I seen my thermocouple buried in Concrete showed 32F

Do me a favor and un-follow this thread

Thx

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

Greg

then thx for nothing

I bought 2 but 1 one was only installed on the cold side

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

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?

Wiring is temp.

50/50

Its a closed loop

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

I don't really care about the warranty. I can even drain it for the summer out of coolant and flush it.

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...

What page?

Thanks

Greg

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...

No - closed loop glycol

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...

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...

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...

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...

Im asking PROs here

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...