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acid flushing an indirect tank

heatmiser Member Posts: 16
anyone have a good procedure to clean a non removable coil in an indirect tank?

my local supply house stocks cloroben de is this suitable? want to acid flush this not thermal shock it. let me know about procedures that have worked well for you. 



    STEVE PAUL_3 Member Posts: 126
    Acid flushing a tank

    A couple of years back, I had very good results with my then 15 year old Amtrol indirect water heater. The exterior of the coil was limed and gunk-ed up. I followed Amtrols' coil flushing instructions and gave the tank and coils a thorough flushing with Phosphoric acid. The acid is what is used in cleaning ice maker coils. When properly used, according to the manufacturers instructions, there should be no health risks. I actually lost my Amtrol instruction book so I had to download the information from the Internet.  
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