Hydronic Piping Systems - Avoiding Common Errors (Part 2)

[@leahcim38]

I just adore everything caleffi . Who cant appreciate a thermostatic mixing valve with a gauge on the output.

[@CaleffiHydronicSolutions]

We appreciate your business…. and comments!

[@leahcim38]

People are stuck in their ways. Its incredible what one can do when they think outside the box. No one taught me how to do solar, but it didn't stop me from learning how to and then applying it.

[@CaleffiHydronicSolutions]

Great job! Hard work pays off.

[@davidhess4497]

Why do we find residential boilers pumping to the PONPC?????

[@CaleffiHydronicSolutions]

Thanks for tuning in - we hope this video encourages more installers place the expansion tank on the upstream (suction) side of the circulator.

[@DaleKlein]

I found my old nat gas boiler was piped that way (wrong), I never understood until I replaced it with a heat pump and buffer tank, and watched & read all the great Siegenthaler / Caleffi information. There was a good explanation about this in a HotRod boiler piping video and in this video at 8:00. It's tradition and convenient packaging. The boiler & pump mfgs liked to package the pump on the return of the boiler, so pumping into the boiler. A guess it's 50/50 which side they'd put the compression ('expansion') tank on, as well as where the auto feed valve was on.

[@DocterDennis]

Hello! In order to eliminate thermal ghost flow, you mentioned to install a check valve and a purging valve. Please tell how an purging valve works as a check valve? I Googled it but that didn't help. Thanks!

[@CaleffiHydronicSolutions]

Hello! A purge valve is not a check valve. The purge valve allows you to manually purge the air from the system. The check valve will prevent ghost flow.

[@lescrab]

I have recently installed a hydronic system in my house, following the instructions in John Siegenthaler''s excellent book. It seems to be working well, but I have a question: is it possible to test the system -- that is, to know if flow rate, pressures, compatibility of the pump, etc. are all what they were designed to be? For example, did I make mistakes in the complicated task of calculating head loss to get the system curve?

[@jamescecil4629]

Are the regulators on the tube manifolds balanced out with identical GPM flow rates

[@Beanz1986]

The hydronic design studio that John speaks about can test designs.

[@davidstreeter4816]

I live in spain and our mains water supply constantly disconnected for maintenance or breakdown , when the supply is re-connected we get a lot of air in the system which has to be purged through the household taps is there an air elimination valve that i could put in line before our first tap to eliminate this air

[@CaleffiHydronicSolutions]

Thanks for you comment. We would advise you to address this case to the water distribution company. Have a good day.

[@SalemHeatingandCooling]

Nice