Heating on, but some radiators switched off and still getting warm?

Section62

Ganga said:

I have just changed a radiator in our hall ,turned the lock sheild off by counting the turns then turned the TRV down to closed ,snowflake sign then tried to drain the radiator ,i was getting hot water out of it even though it had been closed down for a few hours ,checked the TRV was not fully turned off by a miniscule amount ,worth checking they are fully closed.

I did wonder about this - whether the snowflake rather than a '0' indicates the valve never completely closes in normal use.

FreeBear

Section62 said:

Ganga said:

I have just changed a radiator in our hall ,turned the lock sheild off by counting the turns then turned the TRV down to closed ,snowflake sign then tried to drain the radiator ,i was getting hot water out of it even though it had been closed down for a few hours ,checked the TRV was not fully turned off by a miniscule amount ,worth checking they are fully closed.

I did wonder about this - whether the snowflake rather than a '0' indicates the valve never completely closes in normal use.

Snowflake is around 5-7°C, and is just there for frost protection. The TRV should be closing the valve completely whilst the room is above 10°C or so.

km1500

you can get cheaply caps that will screw on and fully close the valve where the tvr is

unscrew the tvr, replace with a cap, turn cap fully down

alternatively turn rad off using other end opposite to tvr, but count and note the no of turns so if you ever turn it on again you maintain the balance.

ThisIsWeird

km1500 said:

you can get cheaply caps that will screw on and fully close the valve where the tvr is

unscrew the tvr, replace with a cap, turn cap fully down

alternatively turn rad off using other end opposite to tvr, but count and note the no of turns so if you ever turn it on again you maintain the balance.

Yes, you can to both. But shouldn't have to.