Water Temperature Adjustment And Scalding; High Elevation Installations - Westinghouse WBRC 140 Series Installation, Start-Up, Maintenance, Parts, Warranty

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H. Water Temperature Adjustment and Scalding
This boiler can deliver
scalding water. Be careful
whenever using hot
water to avoid scalding
injury. Certain boilers
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 boilers 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 o F
125 o F
o
130 F
135 o F
140 o F
o
145 F
150 o F
155 o F
Table 3 - Time and Temperature Relationship in Scalds
I. High Elevation Installations
WARNING
!
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-648 Rev. 001 Rel. 003 Date 10.8.19
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