13
If adjustment is necessary…
Turn off the power to the water
heater.
Remove the jacket access 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 jacket
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
SERVI CING
90 F150 F
125F
(66 C)
(52C)
(32C)
Type 59T thermostat and protective
cover.
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 11/2 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 11/2 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 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 chart below may be used as a guide in
determining the proper water temperature
for your home.
Reset button
Thermostat
protective cover
Thermostat dial
pointer
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