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age, personal injury or fire: DO NOT connect this water
heater to a fuel type not in accordance with unit rating
plate. Propane gas for propane units. Natural gas for
natural gas units. These units are not certified for any
other type fuel.
LP appliances should not be installed below-grade (for
example, in a basement) if such installation is prohibited
by federal, state and/or local laws, rules, regulations, or
customs.
To meet commercial water use needs, the thermostat on
this water heater is adjustable up to 160
0
F (Booster mod-
els have a maximum setpoint of 180°F). However, water
temperatures over 125
0
F can cause severe burns
instantly or death from scalds. This is the preferred start-
ing point for setting the controls for supplying general
purpose hot water.
Safety and energy conservation are factors to be consid-
ered when setting the water temperature on the thermo-
stat. The most energy efficient operation will result when
the temperature setting is the lowest that satisfies the
needs consistent with the application.
Maximum water temperatures occur just after burner has
shut off. To find temperature of the water being deliv-
ered, turn on a hot water faucet and place a thermome-
ter in the hot water stream and read the thermometer.
The following chart details the relationship of water tem-
perature and time with regard to scald injury and may be
used as a guide in determining the safest water temper-
ature for your applications.
The temperature of the water in the heater can be regu-
lated by setting the temperature on the electronic ther-
mostat. To comply with safety regulations, the thermostat
was set at its lowest setting before the water heater was
shipped from the factory. See the section titled SET
POINT ADJUSTMENT PROCEDURE to set the electron-
ic thermostat.
There is a Hot Water SCALD Potential if the thermo-
stat is set too high.
NOTE: When this water heater is supplying general pur-
pose hot water requirements for use by individuals, a
thermostatically controlled mixing valve for reducing point
of use water temperatures is recommended to reduce the
risk of scald injury. Contact a licensed plumber or the
local plumbing authority for further information.
4
DANGER
!
HOT
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
Temperature Time to Produce Serious Burn
120˚F More than 5 minutes
125˚F 1½ 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 1½ seconds
155˚F About 1 second
Table courtes
y
of Shriners Burn Institute
TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
!
General Safety Precautions
WARNING
!
DANGER
!