Stoppage in a radiant floor line

Heeltee

One of the circuits coming off the supply side of the radiant floor manifold is not allowing water to get thru to the return manifold. What is the best way to clear this circuit? without having to remove the pex tubing . Any ideas / Thanks

Gordy

dead loop

Did the loop function properly before?



IT may be air bound you need to purge that loop.

Heeltee

Stoppage in a radiant floor line

purge it ! No luck !

Gordy

Did the loop

Function before?



Is this a new install?



Could there be a kink in the pex?



What type of radiant?

hot_rod

are their actuators

on the manifold? Could be the valve is stuck in the closed position.

Dave H_2

Manifold Balancing

Is this loop a long loop compared to the others and maybe is the heat loss to this particular area higher than the rest.



Slab application?



Could also be the circulator size?



Manifolds should be balanced based upon the gpm needed which is calculated by the heat loss of the space. Then size the circ accordingly.



Dave H.

Gordy

We don't know

What you have unless you can tell us.





This problem could be a multitude of things.



A side from what's been mentioned.



Debris in the system



Frozen loop



Circ issue.



Crazy loop length compared to others.

davidblack

back feed thru buffer tank.

thought once had same problem hooked garden hose up to buffer tank closed all loops except one at a time , opened valve on return manifold.  back feed 60 psi of water threw loop.  Ran for 15 minute.  did get a little dirt out.  loops were never flushed when install guess they should of been.