LP-454 Rev. 004 Rel. 002 Date 12.1.17
14
RE-INSPECTION OF T&P RELIEF VALVES: T&P valves should be
inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if
necessary, by a licensed plumbing contractor or qualied service
technician to ensure that the product has not been aected
by corrosive water conditions and to ensure that the valve and
discharge line have not been altered or tampered with illegally.
Certain naturally occuring conditions may corrode the valve and
its components over time, rendering the valve inoperative. Such
conditions can only be detected if the valve and its components are
physically removed and inspected. Do not attempt to conduct an
inspection on your own. Contact your plumbing contractor for a
re-inspection to assure continued safety.
Do not thread a cap or plug into the relief valve or relief valve line
under any circumstances! Explosion and property damage, serious
injury, or death may result.
FAILURE TO RE-INSPECT THE T&P VALVE AS DIRECTED COULD
RESULT IN UNSAFE TEMPERATURE AND/OR PRESSURE BUILD-UP
WHICH CAN RESULT IN PROPERTY DAMAGE, SERIOUS PERSONAL
INJURY, OR DEATH.
F. Scalding
This water heater can
deliver scalding water. Be
careful whenever using
hot water to avoid scalding
injury. Certain appliances
such as dishwashers and
automatic clothes washers
may require increased
water temperatures. By
setting the thermostat
on this heater to obtain
the increased water
temperature required by
these appliances you may
create the potential for
scald injury.
To protect against injury,
install a mixing valve in the
water system. This valve
will reduce point of use
discharge temperatures
by mixing cold and hot water in branch supply lines. Such valves are
available from your local plumbing supplier.
Table 4 details the relationship of water temperature and time with
regard to scald injury and may be used as a guide in determining the
safest water temperature for your applications.
An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve is
recommended in installations servicing disabled or elderly persons,
or children. Mixing valves do not eliminate the risk of scalding.
To avoid scalding:
• Set the water heater set point temperature as low as possible.
• Feel water before bathing or showering.
• If thermostatic valves are required, use devices specically
designed for such purpose. Install these devices in accordance
with instructions provided by the manufacturer.
Failure to install a temperature limiting or mixing valve and follow
these instructions could result in property damage, severe personal
injury, or death due to scalds.
The water heater must be full of water and the system fully purged
BEFORE powering the water heater. When lling the water heater,
open a hot water tap to release air in the tank and piping. All air
has been purged from the system when water runs freely from the
faucets.
Applying power to the water heater when it is not full of water will
damage the heat exchanger, and could result in property damage,
serious personal injury, or death. Such damages ARE NOT covered
by water heater warranty.
Approximate Time / Temperature Relationships in Scalds
120
o
F More than 5 minutes
125
o
F 1 1/2 to 2 minutes
130
o
F About 30 seconds
135
o
F About 10 seconds
140
o
F Less than 5 seconds
145
o
F Less than 3 seconds
150
o
F About 1 1/2 seconds
155
o
F About 1 second
Table 4 - Approximate Time / Temperature Relationships in Scalds
• Make certain the drain valve is completely closed.
• Open the shut-o valve in the cold water supply line.
• Open the hot water faucets to allow air to vent from the
heater and piping.
• Allow sucient time for the heater to completely ll with
water.
G. Filling the Heater
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