17-11-2016, 02:01 PM
Mine has a little insulation in the outer cover, not enough to have much effect. I wondered for a moment why more heat isn't lost to air when running. The likely answer is that the air for combustion is circulating round the heat exchanger before it enters the burner. Hence the air is pre-heated, effectively re-using the energy lost from the heat exchanger.
There's not much water in the heat exchanger which is why I'm surprised it's taking this long to cool down. But still air is a good insulator, even though it can't be free of convection due to the hot lump of HE in it.
ISTR the temperature going down much lower in the past but it may be my imagination.
Incidentally, Mark is referring to Weather Compensation, not the loo
There's not much water in the heat exchanger which is why I'm surprised it's taking this long to cool down. But still air is a good insulator, even though it can't be free of convection due to the hot lump of HE in it.
ISTR the temperature going down much lower in the past but it may be my imagination.
Incidentally, Mark is referring to Weather Compensation, not the loo
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
