Flushing open the hot and cold service ports and turn the pump on.
Clr flush tankless water heater.
Open the drain valve and.
If your water heater displays the error code it could be the result of limescale.
Keeping the hose as straight as possible put the other end of the hose over a basin or another area.
This prevents cold water from flowing.
Then shut off the cold water valve at the top of the tank and attach a garden hose to the existing drain valve and route it to a floor drain.
Attach a hose to the drain valve.
Turn off the power source for your tankless water heater.
You can flush out a tankless hot water heater in about one hour.
Close the cold water service port and remove the attached hose.
Close turn off the three water valves attached to your tankless water heater.
We recommend a 60 minute flush using a white vinegar as the descaling material advises fleming.
Allow the vinegar to circulate through the heater for a minimum of one hour longer if the pump runs at less than four.
If you do get an error message and must descale or flush your tankless water heater kits are available online to do it yourself.
Turn off the water heater and disconnect it from the inlet pipe.
How do i flush clean my rinnai tankless water heater.
Turn off the electrical circuit for the water heater at the breaker panel.
Calci free tankless water heater flush cleans heater coils thoroughly restores pressure and circulation in minutes with no strong odor calci free is a unique economical biodegradable cleaner containing a combination of organic inorganic and corrosion inhibiting ingredients it is easy to use and works twice as fast as other cleaners.
Shut off the main gas or turn off the circuit breaker for.
Turn the pump off and dump the vinegar.
Shut off the gas or electricity to the water heater and open a hot water faucet and let it run full blast for about 10 minutes to reduce the water temperature in the tank.
Clr type products can be harsh on the copper heat exchanger within the water heater.
