Hi, I'm pondering a diy solar thermal panel drainback system installation.
My question is what happens in very cloudy or rainy weather? In the drainback system, I gather that the water pump turns on at a specific low water temperature, and off when it reaches a set hot temperature.
But on a really cloudy or rainy day, will the water finally get hot enough so that the circulating pump turns off, or would the pump just stay on all day? Thanks
My question is what happens in very cloudy or rainy weather? In the drainback system, I gather that the water pump turns on at a specific low water temperature, and off when it reaches a set hot temperature.
But on a really cloudy or rainy day, will the water finally get hot enough so that the circulating pump turns off, or would the pump just stay on all day? Thanks
