mod-con with high temperature emitters

hot_rod

At last weeks Coffee with Caleffi webinar, Jody did a fine job of showing and explaining the concept.
Using ASHRAE Hours of Occurrence data you can determine what % of the season you are at, below or above design condition. This example was for Boston.

With this data and a proper ODR installed and adjusted you may be able to allow the boiler to run in condensing mode for much of the season.

The 1 hour webinar is archived at this link, webinar #10

https://www.youtube.com/watch?v=6mNECDHgDrg&list=PLuuV0ELkYb5VE0I4evUZ30b5U78CRlRdg&index=10

NYplumber

HR, the webinar was nicely organized. A good watch even for those that are fluent in combustion and modcons. You never know where you can pick up a tip or two.

Henry

Of the 1050 heating hours here, only 150 hours are at maximum boiler design temperature.