Turn Down and Condensing
Hi,
I have a boiler with a 15:1 turndown. With "the Wall" help I am fine tuning the boiler parameters.
I was on the web and found two comments that the high turn down boilers manages things through the air gas mixture and they add more air to the mix to get the turn down. They also state that increases the dew point and might prevent the condensing boiler from condensing and loses its high efficiency. I don't know the rules of adding links in but a google search for The dirty little secret of high turndown ratios. An engineer associated with a boiler manufacturer had this on YouTube. Also found a commercial boiler service company in Nebraska had on their website of info also stating the same. Just wanted the pros opinions on this. Thanks in advance.