10th Floor Block Heating Season: Overflowing Water Sound in Cast-Iron & Aluminum Radiators

Hello,
I live in a block on the 10th floor. Since when the heating season started, in two rooms in two radiators the sound of pouring water ... what could be the reason?

1 old, cast-iron radiator with a vent - replenished
2 newer, aluminum modular radiator without a vent

These noises will cause air bubbles in the installation. You can hear them even when the venting is working properly. Do you have automatic air vents?

No, manual air vent. So how do you get rid of them?

Put in slot machines

You have to bleed the installation again (and precisely). Maybe it's turned back into air. It could happen when, when filling the installation, one of the tenants did not open the valve in front of the radiator (he did not want them to heat it too early), then there were frosts and turned on the radiator, and the air flowed higher. If the air vents are on the radiators (in the caps - i.e. the radiator plugs), then before opening the air vent, you must close the valve inlet to the radiator (then the venting will be more effective), and when only the water comes out of the vent - unscrew the valve to push out the remnants of air. Risers should also be vented.

dbs123 wrote:

Hello,
I live in a block on the 10th floor. Since when the heating season started, in two rooms in two radiators the sound of pouring water ... what could be the reason?

1 old, cast-iron radiator with a vent - replenished
2 newer, aluminum modular radiator without a vent

Heaters heat normally?

Jacek79 wrote:

Put in slot machines

For sure. Those who don't have vending machines are messed up.

This sound is more audible on the radiator without a vent. I will buy a vent on Saturday and we'll see what happens.

It is not necessarily the fault of the air heater. But the most likely cause of the problem.
It is possible that the pressure in the heating system is too low (if the system is closed).

Yes, it was the fault of the air heater. I bought a breather, installed it and I can no longer hear the pouring water. I recommend it to everyone and thank you for the hints.

Hello
I hope this slot machine will never let you down. Specifically, I mean that, for example, the housing community decided to cut the venting pipes because they look ugly and install automatic venting valves, popularly known as Valmats. And so it was done. The first two heating seasons were great. Until one of the tenants was renovating the apartment and the water from the installation was drained for literally two days (in summer, of course). When the water was refilled in the installation, four apartments were flooded, the cause - a jammed Valmat. The second thing was that at that time there were no tenants in the apartments on the top floor, maybe they would have noticed what was happening and there would have been no flooding ...
This is a cautionary post.