4 • Commercial Electric Water Heater Use and Care Guide
IMPORTANT SAFETY INFORMATION
T
o reduce the risk of property
damage, serious injury or death,
read and follow the precautions below,
all labels on the water heater, and
the safety messages and instructions
throughout this manual.
RISKS DURING INSTALLATION
AND MAINTENANCE
Electric Shock Risk
Contact with the electrical
parts in the junction box
and behind the access
doors can result in severe injury or
death from electrical shock:
• Disconnect power by opening the
circuit breaker or removing the fuses
before installing or servicing.
• Use a non-contact circuit tester to
confirm that power is off before
working on or near any electrical
parts.
• Replace the junction box cover and
access doors after servicing.
Lifting Risk
WARNING!
The
water heater is heavy.
Follow these
precautions to reduce the risk of
property damage, injuries from lifting
or impact injuries from dropping the
water heater.
• Use at least two people to lift the
water heater.
• Be sure you both have a good grip
before lifting.
• Use an appliance dolly or hand truck
to move the water heater.
RISKS DURING OPERATION
Scalding Risk
This water heater
can make water hot
enough to cause
severe burns instantly, resulting in
severe injury or death.
• Feel water before bathing or
showering
• To reduce the risk of scalding,
install Thermostatic Mixing Valves
(temperature limiting valves) at
each point-of-use. These valves
automatically mix hot and cold
water to limit the temperature at
the tap. Mixing valves are available
from your local plumbing supplier.
Follow manufacturer’s instructions
for installation and adjustment of
the valves.
• The thermostat(s) on this water
heater have been factory set to
approximately 140°F (60°C) to
reduce the risk of scalding. Higher
temperatures increase the risk of
scalding, but even at 140°F (60°C),
hot water can scald. If you choose a
higher temperature, Thermostatic
Mixing Valves are particularly
important to help avoid scalding.
For information about changing the
factory thermostat setting(s), refer to
the “Adjusting Temperature” section in
this manual (see page 19, step 10).
Even if you set the water heater
thermostat(s) to a low setting, higher
temperatures may occur in certain
circumstances:
• Water temperature will be hotter if
someone adjusted the thermostat(s)
to a higher setting.
• Problems with the thermostat(s),
or other malfunctions may result
in higher than expected water
temperatures.
• If the water heater is in a hot
environment, the water in the
tank can become as hot as the
surrounding air, regardless of the
thermostat setting.
• If the water supplied to the water
heater is pre-heated (for example,
by a solar system) the temperature
in the tank may be higher than the
water heater’s thermostat setting.
To reduce the risk of unusually hot
water reaching the fixtures, install
Thermostatic Mixing Valves.
Temperature
Time to Produce
a Serious Burn
120°F (49°C)
More than 5 minutes
130°F (54°C)
About 30 seconds
140°F (60°C)
Less than 5 seconds
150°F (66°C)
About 1½ seconds
160°F (71°C)
About ½ second
181°F (83°C)
Nearly instantaneous
SAFETY
