Mastering the outdoor reset curve Tekmar.

Mastering the outdoor reset curve

The problem with installing a boiler that matches the building’s heat loss at design-day conditions is that it is oversized for roughly 90% of the heating season We too often encounter modulating condensing ultra-high efficiency boilersones that were installed and set to operate at their maximum water temperature and the outdoor sensor was never installed Hydronic systems utilizing cast iron baseboard and/or radiators present an ideal application for adding ODR

Does it make any sense to install hot water boilers that are sized to match design-day ambient outdoor air temperatures? Every time they turn on, they run full-tilt as if every day is at outdoor design temperatures (coldest weather you experience based on ASHRAE guidelines).

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TAGS: Hydronics
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