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Backwashing domestic tankless coil
Hello everyone and Hi Ken Resnick,
I was recently bonding with my parents boiler and noticed there is a loop installed to backwash the coil. How do I go about doing this? The coil is 20 years old and I'm still getting sufficient hot water from it. However, since i'm fascinated by heating and would like to practice my skills, and can't leave well enough alone... I am thinking about back washing it. Now, I know how to backwash the coil with cold water but How do I do it with chemical? I searched the wall so please forgive me if this topic already exists (I have a feeling it does) please link me to it or provide the proper key words I should search ( I tried "backwash coil"). Also, feel free to let me know that i'm an idiot for contemplating using chemical on a coil that still works well. However even if i don't use the chemical I still would like to know how to run it through. Could I tie in a tee with a ball valve and male adapter so i could then hook a hose and pump up to the coil? I would stick the suction end of the pump into the bucket of chemical. Hook a hose up to the boiler drain on the loop to drain the chemical coming out of the hot side into a bucket therefore recirculating the chemical through my pump back through the coil?