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SECTION X: OPERATING INSTRUCTIONS
TEMPERATURE ADJUSTMENT
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
120°F (49°C) More than 5 minutes
125°F (52°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1½ seconds
155°F (68°C) About 1 second
The water heater temperature setting is adjusted by using the control display mounted to the front of the control panel of
the water heater. The water heater thermostat is set at the lowest setpoint of 70F when shipped from the factory. The
control display shows the temperature setpoint in degrees Fahrenheit (F) or degrees Celsius (C), and the status of the
water heater (“Idle” or “Heating”). If the water heater is functioning normally, the display will also show “Operational”.
For energy efficient operation of your water heater, the suggested initial temperature setting is 120F (49
C). During the
winter season, or any cold period, you may desire a higher temperature setting to adjust for the colder incoming water.
This adjustment, however, may cause additional condensation to form on the cooler tank surface. This does not mean
the tank is leaking. During summer months, the warmer incoming water temperatures will benefit the performance of your
water heater and reduce the amount of condensation developed.
Condensation does not mean your tank is leaking. Over 40% of reported tank leaks on installation are proven to be
condensation. To avoid unnecessary expense and inconvenience, make sure the tank is leaking before calling a service
person.
This water heater, when set at a lower temperature setting, is not capable of producing hot water of
sufficient temperature for sanitizing purposes.
CAUTION
Whenever the water heater is filled with cold water, condensate will form on the cool tank surface and drops of water
will fall on the hot burner and combustion chamber surfaces producing a “sizzling” noise. Condensation is normal
and does not indicate a leak. It will disappear when the tank becomes heated.
The lower the temperature setting, the greater the energy efficiency, both to heat the water and to maintain the
storage temperature during standby periods. Lower water temperatures also extend tank life. Remember, no water
heating system will provide exact temperatures at all times. Allow a few days of operation at this setting to
determine the correct temperature setting consistent with the requirements for the installation.
NOTICE
Hotter water increases the risk of scald injury. Scalding may occur within five (5) seconds at a temperature setting
of 140F (60
C). To protect against hot water injury, install an ASSE approved mixing valve in the water system.
This valve will reduce point of discharge temperature by mixing cold and hot water in branch water lines. A licensed
plumbing professional or local plumbing authority should be consulted.
This water heater is equipped with an energy cut out device to prevent overheating. Should overheating occur or
the gas supply fail to shut off, turn off the manual gas control valve to the appliance and call a qualified service
technician.
DANGER