Installation / Operation Instruction Manual

26
Operating Instructions continued-
WARNING
SCALDING
This water heater can deliver scalding temperature water at
any faucet in the system. Be careful whenever using hot water
to avoid scalding injury. By setting the thermostat on this water
heater to obtain an increased water temperature, you may
create the potential for scald injury. To protect against injury,
you should install an ASSE approved mixing valve (a device to
limit the temperature of water to protect against scald injury via
mixing hot and cold water supply) in the water system. This
valve will reduce point of discharge temperature in branch
supply lines. Such valves are available from the manufacturer
of this water heater or a local plumbing supplier. Please
consult with a plumbing professional.
Table 8 details the approximate 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.
Figure 7 - Scald Warning
APPROXIMATE
TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F
More than 5 minutes
125°F
1 ½ to 2 minutes
130°F
About 30 seconds
135°F
About 10 seconds
140°F
Less than 5 seconds
145°F
Less than 3 seconds
150°F
About 1 ½ seconds
155°F
About 1 second
Table 8 – Scald Relationships