This method can remove oxygen at room temperature and can also be arranged in a low position, but it requires the use of toxic substances like hydrazine. It is not only unsuitable for boilers where steam or hot water comes into contact with food or the human body, but also poses a hazard to operating personnel. Moreover, it involves high initial investment, complex operation, and is difficult to promote and develop on industrial boilers.
What are the characteristics of oxygen removal using redox resin in Beretta wall-hung boilers?
Source: Beijing Beretta Wall-Hung Boiler Repair Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3778711.