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Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F More than 5 minutes
125°F 1½ 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 1½ seconds
155°F 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 home.
!
DANGER: Households with small children, disabled,
or elderly persons may require a 120°F or lower thermostat
setting to prevent contact with “HOT” water.
NOTICE: Mixing valves should be installed to reduce the
point of use water temperature by mixing hot and cold water
in branch water lines. Contact a licensed installer or the local
plumbing authority for further information.
The temperature of the water in the water heater can be regu-
lated by setting the temperature dial of the adjustable surface
mounted thermostat located behind the jacket access panel.
This thermostat controls the
water heater’s heating ele-
ment only. (A separate ther-
mostat should be utilized in
monitoring the temperature
from the collector).
To comply with safety reg-
ulations the thermostat is
factory set at 120° F or less
where local codes require.
!
DANGER: Hotter water increases the potential for Hot
Water SCALDS.
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IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
!
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
can cause severe burns or death from scalding. Be sure to read and follow the warnings
outlined on the label pictured below.
5
!
DANGER: Burns from Hot Water and
Steam - Use extreme care when opening relief
valves, charging closed loop, and filling storage
tank.
The electrical element booster thermostat has
been factory set at 50°C (120°F) to reduce the
risk of scald injury. Adjusting the thermostat to a
higher setting is not recommended. Hotter water
increases the potential for Hot Water Scalds.
R
E
S
E
T
R
E
S
E
T
TURN OFF
POWER
BEFORE
SER VICING
90°F150°F
125°F
(66°C)
(52°C)
(32°C)
Reset button
Thermostat
protective
cover
Thermostat
dial pointer