{"id":2248,"date":"2025-05-30T09:12:39","date_gmt":"2025-05-30T09:12:39","guid":{"rendered":"https:\/\/kretz.cz\/produkt\/kotel-wally-56-s\/"},"modified":"2025-09-08T10:47:19","modified_gmt":"2025-09-08T10:47:19","slug":"kotel-wally-56-s","status":"publish","type":"product","link":"https:\/\/kretz.cz\/en\/product\/kotel-wally-56-s\/","title":{"rendered":"Boiler WALLY 56S (25-56kW)"},"content":{"rendered":"<p>The WALLY 56 S boiler is designed for large heating areas, delivering 25 kW (biomass), 56 kW (coal), and 42 kW (wood). With 80% efficiency and the ability to burn logs up to 710mm, it minimizes fuel costs. The 57-liter water heat exchanger and support for closed circuits increase versatility. Measuring 1016\u00d7597\u00d71120 mm and weighing 412 kg, it requires professional installation but ensures long-term reliability. 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