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12
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 Setting
The temperature of the water in the water
heater can be regulated by setting the
temperature dial of the adjustable surface
mounted thermostat(s) located behind the
jacket access panel(s).
Dual element heaters have two
thermostats.
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
thermostat(s) are factory set 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 near the thermostat access
panel.
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 4 for more
details and contact a licensed plumber or
the local plumbing authority for further
information.
The chart below may be used as a guide in
determining the proper water temperature
for your home.
If the water heater has been subjected to
fire, flood or physical damage, turn off
power to water heater, and do not operate
the water heater again until it has been
checked by a qualified service technician.
NOTICE: Do not use this appliance
if any part has been under water.
Immediately call a qualified installer
or service agency to replace a flooded
water heater. Do Not attempt to repair
the unit! It must be replaced.
If adjustment is necessary…
Turn off the power to the water heater.
Remove the front center panel(s) and
insulation exposing the thermostat(s).
The thermostat protective cover(s)
SHOULD NOT be removed.
Using a small screwdriver, set the
thermostat(s) dial pointer(s) to the
desired temperature.
Replace the insulation and front
center access panel(s). Turn on the
power to the water heater.
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVICING
90°F150°F
125°F
(66°C)
(52°C)
(32°C)
Type 59T thermostat and
protective cover.
Reset button
Thermostat
protective
cover
Thermostat
dial pointer
Operating the water heater
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