Scalding; Filling The Heater - Westinghouse WGR050NG076 Installation, Start-Up, Maintenance, Parts, Warranty

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 specifically
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.
Approximate Time / Temperature Relationships in Scalds
120 o F
125 o F
130 o F
135 o F
140 o F
145 o F
150 o F
155 o F
Table 4 - Approximate Time / Temperature Relationships in Scalds
G. Filling the Heater
The water heater must be full of water and the system fully purged
BEFORE powering the water heater. When filling 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.
More than 5 minutes
1 1/2 to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1 1/2 seconds
About 1 second
• Make certain the drain valve is completely closed.
• Open the shut-off valve in the cold water supply line.
• Open the hot water faucets to allow air to vent from the heater
and piping.
• Allow sufficient time for the heater to completely fill with
water.
WHL-001 Rev. 001 Rel. 008 Date 8.23.18
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