To descale a tankless water heater you will need.
Descale noritz tankless water heater.
You will need the following equipment to conduct a de scale.
Descaling a noritz tankless water heater.
Flushing or de scaling is part of the regular maintenance of a noritz heater.
To descale a tankless water heater noritz recommends pumping kitchen grade vinegar through the system for about an hour.
Noritz provides descaling procedures in this faq.
Three to four gallons of distilled food grade white vinegar.
It involves circulating a solution of pure vinegar or calcium lime and rust product through the heat exchanger using a submersible pump.