Another heating update

I'm gaining confidence as the system settles in. Manifolds are being fed about 85-90 degree water, causing me to think its time to begin working on the controls. The house is a comfortable mid-60's but it should be warmer still for curing of the mud that is being done now. A surprising thing I discovered today was the first domestic tank is up to 149 degrees! That's the bonus heat we get. That finding motivated me to hook up the re circulation pump for the hot water distribution, which caused both tanks to circulate together and thereby dropping the temp to tho 80's. I'm sure it will be back up to hot again tomorrow.