Does all piping in a hydronic system need to slope to the boiler

Brad White_185

I mean, so long as you have the means to vent your high points and drain your low points, or have the ability to purge each circuit, I do not see a reason why the piping would need to pitch to or away from the boiler in a forced hot water system.

In a <i>gravity</i> hot water system, yes, that pitching practice is essential to how it works.

Brian_5

slping piping back to the boiler

I am instlling a new condensing boiler. It will have 4 zones and one zone is a new living space in a basement. I am using flat panel Myson radiators in the basement and it will basically be impossible to have the piping in the basement slope back to the boiler for the Myson rads. I have heard differing opinions on problems that will occur because of air pockets etc. Although a baseboard system doesn't slope back and I have done tons of those systems and had no problems. Can someone tell me if this is something I should worry about? Or is there somethig I should do to avoid these potential problems? Possibly use auotmatic bleeder vents where I have to drop down to the rads? Thanks!