13
Water Temperature
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 1
1
/2 to 2 minutes
130°F About 30 seconds
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 1
1
/2 seconds
155°F About 1 second
Table courtesy of Shriners Burn Institute
DANGER: There is a
hot water scald potential if
the thermostat is set too
high. Households with small
children, disabled, or
elderly persons may require
a 120°F or lower thermostat
setting to prevent contact
with HOT water.
Water Temperature Set Point
Safety and energy conservation are factors
to be considered when selecting the water
temperature setting of the water heater’s
thermostat(s). The lower the temperature
setting, the greater the savings in energy
and operating costs.
To comply with safety regulations the
electronic control is factory programmed
at 120°F or less where local codes require.
This is the recommended starting point.
Water temperatures above 125°F can
cause severe burns or death from scalding.
Be sure to read and follow the warnings
outlined in this manual and on the label
on the water heater. This label is located
on the water heater above the lower access
panel.
Mixing valves for reducing point of use
water temperature by mixing hot and
cold water in branch water lines are
available. Contact a licensed plumber or
the local plumbing authority for further
information.
The electronic control allows the water
temperature to be set from 110°F to 150°F.
The chart below may be used as a guide in
determining the proper water temperature
for your home.
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