Introduction: ZOZEN Dual fuel Hot Water generators can be found in the WNS series and SZS series. So what are the differences between WNS and SZS Dual fuel Hot Water generators? The WNS Dual fuel Hot Water generators are classic 3-pass wetback oil/gas fired boilers. SZS Dual fuel Hot Water generators are designed with longitudinal double drums and " D " type chamber structure. You can learn more about the Dual fuel Hot Water generators on the ZOZEN Boiler official website.
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