Thermal storage can be compared to a battery which accumulates heat and gradually give it back.
Size estimate for 1 gal firebox = 5 to 10 gal of storage.
Application: UNI 15-55, Pellet Duo 40-95, Eko Duo 40-95
Volume 230gal - 872L Weight 240 lb, Width 31", Height 77" Connection: 9x 1 ¼" FPT and 5x ½" FPT Steel Grade: ASTM A283 Max Pressure 50 PSI Insulation Side 4" and Top 5" Made in Europe
A perfect designed heating system will match maximum heat output in the coldest day of the year. Meanwhile, boilers are almost always oversized and operate in partial load condition. In result, boilers rarely reach 100% capacity and are required to modulate down to a minimum of 30%. When boilers modulate down, they decrease proportionally from 90 to 65% efficiency.
Buffer tank allows the boiler to operate under any conditions at 100% capacity for maximum efficiency. They also serve as the center for all hydronic connections. Storage ease and optimize the operation of a modern hydronic system.