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To meet commercial hot water requirements, the
tankstat is adjustable up to 190°F. However, water
temperatures over 125°F. can cause severe burns in-
stantly or death from scalds. This is the preferred
starting point for setting the control for supplying general
purpose hot water.
Safety and energy conservation are factors to be consid-
ered when setting the water temperature on the tankstat.
The most energy efficient operation will result when the
temperature setting is the lowest that satisfies the needs
consistent with the application.
Water temperature over 125°F can cause
severe burns instantly or death from
scalds.
Children, disabled and elderly are at high-
est risk of being scalded.
See instruction manual before setting tem-
perature at tankstat.
Feel water before bathing or showering.
Temperature limiting valves are available,
see manual.
Maximum water temperatures occur just after burner
has shut off. To find hot water temperature being
delivered, turn on a hot water faucet and place a
thermometer in the hot water stream and read the
thermometer.
The following chart 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.
Temperature Time to Produce Serious Burn
120°F. More than 5 minutes
125°F. 1-1/2 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 1-1/2 seconds
155°F. About 1 second
Table courtesy of Shiners Burn Institute
TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
The temperature of the water in the storage tank can be
regulated by setting the temperature dial on front of the
tankstat. To comply with safety regulations, the
tankstat was set at its lowest setting before shipment
from the factory. The illustration below illustrates the
tankstat and how to adjust the water temperature.
To adjust the water temperature,
insert a small straight screwdriver
into slotted screw in hole in front
of tankstat and turn wheel to
desired setting. Tankstat is
adjustable up to 190°F.
CAUTION!! - Hotter water
increases the risk of
SCALDING!
There is a Hot Water SCALD Potential if the tankstat is
set too high.
NOTE: When this water heater is supplying general
purpose hot water requirements for use by individuals, a
thermostatically controlled mixing valve for reducing
point of use water temperature is recommended to
reduce the risk of scald injury. Contact a licensed
plumber or the local plumbing authority for further infor-
mation.
General Safety Precautions