3
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (51°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1½ seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide
in determining the proper water temperature for your
location.
!
DANGER: Locations with small children, disabled, or
elderly persons may require a 120°F (49°C) or lower
thermostat setting to prevent contact with “HOT” water.
The temperature of the water in the heater is
regulated by the adjustable surface mounted
thermostat(s) located behind the jacket access
panel(s). Dual element heaters have two thermostats.
To comply with industry standards the thermostat(s)
were set at 120°F before the water heater was
shipped from the factory. Canadian models are set
to 140°F (60°C).
The illustration at the left
shows the temperature
adjustment dial used
for setting the water
temperature.
Refer to the Operating
Instructions in this
manual for detailed
instructions in how to
adjust the thermostat(s).
!
DANGER: Hotter water increases the potential for
Hot Water SCALDS.
DANGER
!
HOT
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
Reset button
Thermostat
protective
cover
Thermostat dial
pointer
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of water heater’s thermostat. Water temperatures above 125°F (51°C)
can cause severe burns or death from scalding. Be sure to read and follow the warnings
outlined on the label pictured below. This label is also located on the water heater near
the thermostat access panel.
NOTICE: Mixing valves are recommended for reducing
point of use water temperature by mixing hot and
cold water in branch water lines. It is recommended
that a mixing valve complying with the Standard for
Temperature Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be installed. See page
14 for more details and contact a licensed plumber or the
local plumbing authority for further information.
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