HI,
Thanks for the message on earlier post. Here's a modified question:
On my Axios UnderFloor heating manifold, if I close down each of the zone valves, but call for heat via the thermostats, after a few minutes, the actuators open, and hot water from boiler comes to manifold, as well, the return pipe (from the manifold, heading to boiler) becomes hot also. The temperature on the thermometer scale of the manifold is at 55C approx (which manufacturer says is correct).
However, once I open the zone valves, the temperature drops to 30C and the return pipe (of manifold to boiler), goes cold. Note, the little red things in the glass/valve does drop and water enters it.
Any idea? The manufacturer says that there may not be enough "push" from my main boiler pump, but this seems surprising.
One thing: The return of the boiler is a shared return of a radiator system. I know it's not ideal, but my plumber did it this way, and I only realised it's more optimal to have a dedicated return after my floor was closed, etc. The test written above was done without my radiators turned on.
Please help
Thanks for the message on earlier post. Here's a modified question:
On my Axios UnderFloor heating manifold, if I close down each of the zone valves, but call for heat via the thermostats, after a few minutes, the actuators open, and hot water from boiler comes to manifold, as well, the return pipe (from the manifold, heading to boiler) becomes hot also. The temperature on the thermometer scale of the manifold is at 55C approx (which manufacturer says is correct).
However, once I open the zone valves, the temperature drops to 30C and the return pipe (of manifold to boiler), goes cold. Note, the little red things in the glass/valve does drop and water enters it.
Any idea? The manufacturer says that there may not be enough "push" from my main boiler pump, but this seems surprising.
One thing: The return of the boiler is a shared return of a radiator system. I know it's not ideal, but my plumber did it this way, and I only realised it's more optimal to have a dedicated return after my floor was closed, etc. The test written above was done without my radiators turned on.
Please help