So let's say you set your thermostat to 20 degrees centigrade, and the current room temperature is 10. A flow of water will gush into the radiators. What I'm wondering, is this flow constant the whole time, or does it slowly descend as the room temperature approaches 20 degrees?
Another way to put it, in the same scenario as above, will the room temperature get to 20 degrees faster if I put the thermostat on 30 degrees? Or will it take the same time?