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Residenal Electric Water Heater Use and Care Guide • 5
IMPORTANT SAFETY INFORMATION
SAFETY
If anyone in your home is at particular
risk of scalding (for example, the
elderly, children, or people with
disabilities) or if there is a local code
or state law requiring a certain water
temperature at the hot water tap,
then these precautions are particularly
important.
According to the national standard
American Society of Sanitary
Engineering (ASSE 1070) and most
local plumbing codes, the water
heater’s thermostat should not be
used as the sole means to regulate
water temperature to avoid scalds.
Properly adjusted Thermostatic Mixing
Valves installed at each point-of-use
allow you to set the tank temperature
to a higher setting without increasing
risk of scalds. A higher temperature
setting allows the tank to provide
much more hot water and can help
provide proper water temperatures
for appliances such as dishwashers
and washing machines. Higher tank
temperatures (140°F/60°C) also kill
bacteria that cause a condition known
as “smelly water” and can reduce the
levels of bacteria that cause water-
borne diseases.
Water Contamination Risk
Do not use chemicals that could
contaminate the potable water supply.
Do not use piping that has been
treated with chromates, boiler seal, or
other chemicals.
Fire Risk
To reduce the risk of a
fire that could destroy
your home and
seriously injure or kill people:
• Do not store things that can burn
easily such as paper or clothes next
to the water heater.
• Be sure the junction box cover and
the element access door covers are
in place. These covers keep debris
from entering and potentially being
ignited, and help keep any internal
fires from spreading.
• Keep the water heater from
becoming wet. Immediately shut
the water heater off and have it
inspected by a qualified person if you
find that the wiring, thermostat(s)
or surrounding insulation have been
exposed to water in any way (e.g.,
leaks from plumbing or leaks from
the water heater itself can damage
property and could cause a fire risk).
If the water heater is subjected to
flood conditions or the thermostat(s)
have been submerged in water,
the entire water heater must be
replaced.
• Make electrical connections properly,
according to the instructions on page
17. Use 10 gauge solid copper wire.
Use a UL listed or CSA approved
strain relief. Connect the ground wire
to the green ground screw.
Explosion Risk
High temperatures and
pressures in the water
heater tank can cause an
explosion resulting in property
damage, serious injury or death. A new
Temperature and Pressure (T&P) Relief
Valve is included with your water
heater to reduce the risk of explosion
by discharging hot water. Additional
temperature and pressure protective
equipment may be required by local
codes.
A nationally recognized testing
laboratory maintains periodic
inspection of the valve production
process and certifies that it meets the
requirements for Relief Valves for Hot
Water Supply Systems, ANSI Z21.22.
The T&P Relief Valve’s relief pressure
must not exceed the working pressure
rating of the water heater as stated on
the rating plate.
Maintain the T&P Relief Valve properly.
Follow the maintenance instructions
provided by the manufacturer of the
T&P Relief Valve (label attached to T&P
Relief Valve). If no label is attached
to the T&P Relief Valve, follow the
instructions in the T&P Relief Valve
Maintenance section of this manual.
An explosion could occur if the T&P
Relief Valve or discharge pipe is
blocked. Do not cap or plug the T&P
Relief Valve or discharge pipe.
Fire and Explosion Risk if Hot Water is
Not Used for Two Weeks or More
CAUTION! Hydrogen gas builds up
in a hot water system when it is not
used for a long period (two weeks
or more). Hydrogen gas is extremely
flammable. If the hot water system
has not been used for two weeks or
more, open a hot water faucet for
several minutes at the kitchen sink
before using any electrical appliances
connected to the hot water system.
Do not smoke or have an open flame
or other ignition source near the
faucet while it is open.
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