We have an oil-fired, floorstanding boiler. Our bathroom radiator has no valves on it, and seems to come on at odd times, independently to whether the heating is on (the hot water might be, but the heating isn't).
I vaguely remember someone once telling me that due to the type of boiler we have, there had to be one radiator that didn't have valves on it and hence could not be turned 'off' but I can't remember the reasoning behind this.
Anyone know what this is about?
Tony.