Want to turn off first radiator on system

longforgotten

The first radiator on the central heating system is the one in the bathroom. No TRV, still awaiting TRV's to be fitted to rads.

Anyway, the living room is nice and toasty and the bathroom is directly above it.

Is it ok to turn the rad off in the bathroom as there is a electric wall heater in there if I find it nippy. The first rad on the system seems to hold some importance so am I just being neurotic to even ask this question ?

anotherbaldrick

first rad in bathroom could be the heat sink for the boiler, that is when the system turns off the pump can still circulate water through this rad to dissipate the heat stored in the boiler heat exchanger. Otherwise the boiler could overheat an lock out on overtemp, You need to check this out before you turn off this rad, have you got zone motorised valves ?

longforgotten

It's an old central heating system, say 40+ years old. Zone motorised valves I'm lucky the boiler got an on/off switch !

Each radiator has an on/off knob. The heating is governed by a timer where you chose the times it comes on or off. Then the boiler itself has a dial where you chose 1 to 6 for the heat setting.

If there is anything else going on I don't know about it

There would always be other rads on if I turned off the rad in the bathroom but they would all be downstairs

So I'm assuming it's a safe bet from what you've said, until I find out, to turn off the rad in the bathroom whilst the heating is on, then turn it back on when the heating is off.

anotherbaldrick

If that is what it is you don't need to worry about it then . Problem I mentioned would only effect modern boilers with low content chambers.