38
WATER TEMPERATURE ADJUSTMENT
1. The aquastat controls the maximum water temperature in the
tank. The differential is a fixed 5°F with a 160°F maximum
setting, set at the factory to 120°F.
Table 7 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.
WARNING
SCALDING This water heater can deliver scalding temperat
ure water at any
faucet in the system. Be careful whenever using hot water to
avoid scalding injury. By setting the aquastat 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.
Figure 6 - 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 7 – Scald Relationships
INTERNET VERSION FOR REFERENCE ONLY