12. User Interface/Controls
Power
• Turn the knob to the right (clockwise) to activate the heater. The display will
light up.
• Turn the knob all the way to the left (counterclockwise) to turn off the heater.
Setting the Output Water Temperature
• To set the temperature, turn on a hot water faucet and allow water to run
through the heater. Turn the knob clockwise to activate the heater and
display the outlet temperature.
• To raise the temperature setting, turn the knob clockwise. To lower the
temperature, turn the know counterclockwise.
• The temperature can be set to a level from 90°F to 122°F (30°C to 50°C).
• A comfortable temperature for bathing and showering is between 98°F and 105°F (37°C to 41°C).
• The recommended temperature setting is 118°F (48°C), which will deliver hot water for all household needs at
a maximum water flow rate.
CAUTION: A higher temperature setting is not recommended, as it can cause severe scalding injuries to
children and elderly persons. Higher temperatures also produce more scale buildup in water heating devices.
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115
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Lower
Raise
temperature
temperature