If the water heater uses a gas heater rotate the gas.
Clr flush tankless water heater.
Close turn off the three water valves attached to your tankless water heater.
Close the cold water service port and remove the attached hose.
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We recommend a 60 minute flush using a white vinegar as the descaling material advises fleming.
Turn off the power source for your tankless water heater.
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.
Shut off the main gas or turn off the circuit breaker for.
Clr type products can be harsh on the copper heat exchanger within the water heater.
Allow the vinegar to circulate through the heater for a minimum of one hour longer if the pump runs at less than four.
The flush of your noritz rheem rinnai tankless the water heater with the distilled white vinegar each year if you are using soft water or every 6 months for the hard water.
Attach a hose to the drain valve.
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.
Keeping the hose as straight as possible put the other end of the hose over a basin or another area.
Flushing open the hot and cold service ports and turn the pump on.
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.
If your water heater displays the error code it could be the result of limescale.
You can flush out a tankless hot water heater in about one hour.
This prevents cold water from flowing.
Turn off the electrical circuit for the water heater at the breaker panel.
Turn the pump off and dump the vinegar.
