piping Panel Rad's

[Deleted User]

And theres always a but in every crowd. I'm it.

For me and my money, and I assume you have a steel panel rad like a Buderus or Oventrop in mind, I'd install them in parallel and install TRV's on them so they could be shut down if not needed.

When you start piping rads in series, the last half of the last radiator might as well not even be there...

JMHO

ME

[Deleted User]

A while back I had a plumber do the near boiler piping on my hot water boiler with the plan that I would continue with fintube in a reverse return piping.
Since then I have changed my ming and would like to install 4 panel rad's on this zone.
What I have is a 3/4" coming off from the 1 1/4" manifold with honeywell ZV, 1 curculator pump.
Can I take off this 3/4" after the ZV and supply a 3/4" manifold for 1/2" pex to supply the rad's???

[Deleted User]

my intention would to them all piped off from a manifold with 1/2 pex al pex. 1st choice would be a Buderus rad. with TRV's. I can't see where I can get constant circ. with my ZV's and only 1 pump.

Am I all wrong in my thinking?

[Deleted User]

You can one or the other....

but not both. Continuous circ with outdoor rest has been proven to be the most reliable/comfortable systems and most efficient system in the world. Problem is, your existing system is bang bang, and your additional radiators will be too.

In order to utilze constant circ, the system as a whole needs to be addressed.

Still, panel rads in a bang bang systems work great, just not as well as they could be.

ME

Brad White_129

Agree with Mark

What he said.

Ted_9

panels

Like Mark said, there are two or 3 ways to do it.

One is like a mono flo loop. Using a diverter valve and a thermostatic head, you can connect all four rads in "series". This option uses less tubing.

The second is not using the heads and diverter and just piping in series. The thing here is you have to increase the size of the last rad/rads. This still uses less pipe though.

My favorite is a direct supply and return home run set up. Use thermostatic heads, no diverters at the rads just one pressure differential bypass at the zone supply and return piping. This way would get heat to each rad faster. This however, uses the most pipe.

Refer to the Buderus or Oventrop panel rad manuals for more details.

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soot_seeker_2

My favorite is a direct supply and return home run set up. Use thermostatic heads, no diverters at the rads just one pressure differential bypass at the zone supply and return piping. This way would get heat to each rad faster. This however, uses the most pipe.

Ted, In this setup would a 3/4 manifold be enought to supply the 1/2 pex supply, home runs?
This would get me by untill I can address the boiler set up for constant circ., & outdoor/setback.
I have rooms with no rad's. now & we are starting into the heating season. I could set this zone up correct, then address the rest of the piping in warmer weather.
Am I going in the right direction?