Navien NPN-160U User's Information Manual page 4

DANGER
HOT
BURN
To prevent burns:
Use the lowest operating temperature setting
necessary to provide comfortably-hot water.
If your household has children or elderly or
disabled residents, using a lower temperature
setting is recommended.
Do not leave children, the elderly, or disabled
persons unsupervised.
Do not allow small children to play
unsupervised in the bathroom.
Do not allow anyone to change the water
temperature while hot water is running.
Read all the instructions in this manual
carefully before changing the temperature
setting.
Feel the water before using it on children, the
elderly, or the disabled.
If it is necessary to set the water temperature
above 125 °F (52 °C), consider installing a
thermostatically-controlled
or temperature-limiting valve. Contact a
licensed plumber or your local plumbing
authority for more information.
4 Safety Information
mixing valve
DANGER
This water heater's water temperature is set
to 120 °F (49 °C) at the factory for your safety
and comfort. Increasing the temperature
increases the risk of accidental scalding. Water
temperatures at or above 125 °F (52 °C) can
cause instant scalding, severe burns, or death.
Before you decide to change the temperature
setting, read the following charts carefully.
Time in which a young child
Water
can suffer a full thickness
Temperature
(3rd degree) burn
160 °F (70 °C) Less than 1 second
140 °F (60 °C) 1 second
130 °F (55 °C) 10 second
120 °F (49 °C) 10 minutes
100 °F (38 °C) very low scald risk
Before setting the temperature at or above
125 °F (52 °C), consider installing a thermostatically-
controlled mixing valve or temperature-limiting
valve. Contact a licensed plumber or your local
plumbing authority for more information.