Descale Tankless + Water Pipes using the Circulating Pump?

[guyross]

Hey all,

Do you think I descale the entire hot water system - tankless heater and pipes - by running CLR solution or Vinegar through it using the circulatory pump?
In this configuration the circulatory pump would suck CLR solution through all the pipes and the heater from a bucket on the ground.

Thanks!

 

[TomFOhio]

They make solutions that are biodegradeable. I can't tell by your picture if you have the kit installed to flush the system. Need
a good picture of under the unit. Don't put anything through that system that you want to drink later.

 

[Arctic trouble]

You need to use a cheap transfer pump, turn off valve between those hose connections also the main. Use 30% vinegar, remove aerators and shower heads, open each valve until you smell it then shutoff and let it sit in the system as long as possible then flush. Be careful high strength vinegar burns.