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19
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.
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1
1
/2 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 1
1
/2 seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
!
DANGER: There is a
hot water scald potential if
the thermostat is set too
high. Locations with small
children, disabled, or
elderly persons may require
a 120°F or lower thermostat
setting to prevent contact
with HOT water.
!
DANGER: To reduce the risk of electric shock,
disconnect all branch circuits before opening the access
panel(s). The water heater may be connected to more than
one branch circuit.
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 installation.
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.
!
DANGER: Hotter water increases the
potential for Hot Water SCALDS.
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SERVICING
170°F
(77°C)
110°F
(43°C)
140°F (60°C)
TURN OFF
POWER
BEFORE
SERVICING
°
170°F
(77°C)
110°F
(43°C)
140°F (60°C)
Reset
button
Thermostat
protective
cover
Thermostat
dial pointer
Operating the water heater.
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