The company has released two condensing gas boilers, Models 550 and 750. Features include 93.9% thermal efficiency, 94% combustion efficiency, low NOx certification, PVC venting for direct vent and direct exhaust, and 20% to 100% modulation.
Retrieving every last bit of performance from the system while stopping short of the surge line is no small feat. Dig into sizing, tower selection, chilled water loads and stability, and condenser water management to leave no efficiency stone unturned. Read more in April issue