Water Temperature Adjustment And Scalding; High Elevation Installations - Westinghouse Premium WGRT 199 Series Installation, Start-Up, Maintenance, Parts, Warranty

G. Water Temperature Adjustment and 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 3 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.
Approximate Time / Temperature Relationships in Scalds
120 F
o
125 o F
130 o F
135 o F
140 o F
145 o F
150 o F
155 F
o
Table 3 - Time and Temperature Relationship in Scalds
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.
Households with small children, disabled, or elderly persons may
o
require a 120 F or lower temperature setting to prevent severe
personal injury or death due to scalding.
H. High Elevation Installations
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
Natural gas at high elevation might contain less heating value than
typical 1,000 BTU/cu ft and therefore can cause improper air / gas
mix leading to improper combustion. For natural gas installations
above 3,000 ft, call your gas provider to determine the heating value
of the supplied natural gas.
whl-004 Rev. 000 Rel. 013 Date 5.1.18
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