Hi,
I'm sure this must have been come across before and a simple solution exists!
I have a large thermal store installed (sealed system). The recently installed log burner heats the store via a heat exchange block. Each side of the heat circuit has a pump. One on the log burner side and the other on the loop around the thermal store. A pipe stat is on the burner pipe set to 45 degree. This works fine and as the stat closes both pumps on the heat exchanger start circulating the water and the tank heats up.
Only problem is that as the log burner runs out of fuel and cools down what looks to be happening is the heat then is getting transferred from the store back to the bruner side of the heating circuit and therefore the stat on the burner stays on eventhough the log burner is effectively going out. If left to it's own devices the pumps continue transferring heat from the store to the burner circuit until the store temperature is low.
Any ideas on how to solve this? I've been thinking of an additional stat somewhere but can't get my head around how it would work.
I'm sure this must have been come across before and a simple solution exists!
I have a large thermal store installed (sealed system). The recently installed log burner heats the store via a heat exchange block. Each side of the heat circuit has a pump. One on the log burner side and the other on the loop around the thermal store. A pipe stat is on the burner pipe set to 45 degree. This works fine and as the stat closes both pumps on the heat exchanger start circulating the water and the tank heats up.
Only problem is that as the log burner runs out of fuel and cools down what looks to be happening is the heat then is getting transferred from the store back to the bruner side of the heating circuit and therefore the stat on the burner stays on eventhough the log burner is effectively going out. If left to it's own devices the pumps continue transferring heat from the store to the burner circuit until the store temperature is low.
Any ideas on how to solve this? I've been thinking of an additional stat somewhere but can't get my head around how it would work.