Every Rinnai tankless water heater is equipped with the freeze protection feature that includes the electric heating elements. As long as the unit is connected to the power, you water heater is protected. ... - Shut off the water and gas supply to the water heater. - Turn the temperature controller OFF.
How do I keep my tankless water heater from freezing?
- Install Your Water Heater in a Warm Place. ...
- Drain Your Water Heater. ...
- Maintain a Power Source. ...
- Consider a Recirculation System. ...
- Insulate, Insulate, Insulate. ...
- Run a Trickle of Water.
Do tankless water heaters have freeze protection?
Most indoor and outdoor tankless water heaters have built-in freeze protection against temporary winter temperatures ranging from -5 degrees Fahrenheit to -22 degrees Fahrenheit. This protection cannot withstand long term below freezing temperatures.Dec 30, 2014
How does Rinnai freeze protection work?
The primary protection for a Rinnai heater, is the addition of ceramic heaters which are placed on the heat exchanger and other internal parts, as well as water lines. These ceramic heaters fire-up when the temperature drops into the low 30's and prevent the internal parts from freezing.
What do you do when your tankless water heater freezes?
- CLOSE the Gas and Water Shutoff Valves and turn OFF the Electrical Power.
- Allow the tankless unit to thaw. ...
- Carefully inspect the external pipes, internal components, and the plumbing for leaks.
- If everything looks good, you can OPEN the Gas and Water Valves and turn the Electrical Power ON.
Why does my Rinnai tankless water heater go cold?
Your tankless water heater will feel cold to the touch when the heater unit and pumps are in the rest state and not heating water. There's nothing to worry about. As long as everything is working properly (e.g. you have hot water on demand), there is no cause for concern.
Can a Rinnai water heater freeze?
However, many manufacturers, such as Rinnai and Rheem have built-in some type of freeze protection which allows the unit to protect itself when temperatures fall below freezing. Rinnai tankless water heaters have two lines of defense to protect them from cold weather and prevent freezing.