I've drained my open-vented gravity fed pumped system to fit Danfoss RAS-C2 bi-directional TRVs upstairs.
The TRVs are now fitted, and I've turned the water back on to the cold water feed cistern, but my upstairs radiators didn't fill up after a day (i was bleeding all the radiators, but no air was escaping), so i guessed the system has airlock.
I've reconnected my hosepipe to the draincock downstairs, and tried to fill the system bottom-up. It seemed to start working as air was escaping when bleeding the upstairs radiators, but this became incrementally less with each bleed. I've been filling for two hours now.
We've got no hot water and no central heating. My mother-in-law has arrived, and my father-in-law arrives tomorrow. No central heating engineers or plumbers are available in the area for the next week.
Has anyone any suggestions? Could this possibly be related to the directional setting on the TRVs? From what I've read, the direction doesn't matter, and only needs to be set explicitly if water hammer occurs.
The TRVs are now fitted, and I've turned the water back on to the cold water feed cistern, but my upstairs radiators didn't fill up after a day (i was bleeding all the radiators, but no air was escaping), so i guessed the system has airlock.
I've reconnected my hosepipe to the draincock downstairs, and tried to fill the system bottom-up. It seemed to start working as air was escaping when bleeding the upstairs radiators, but this became incrementally less with each bleed. I've been filling for two hours now.
We've got no hot water and no central heating. My mother-in-law has arrived, and my father-in-law arrives tomorrow. No central heating engineers or plumbers are available in the area for the next week.
Has anyone any suggestions? Could this possibly be related to the directional setting on the TRVs? From what I've read, the direction doesn't matter, and only needs to be set explicitly if water hammer occurs.