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SETTING THE WATER HEATER TEMPERATURE AT 120°F (49°C) (APPROX.
"
" MARK ON FACE OF THE TEMPERATURE ADJUSTING DIAL) WILL
REDUCE THE RISK OF SCALDS. Some states require settings at specific
lower temperatures.
Temperature Time to Produce 2nd & 3rd
Setting Degree Burns on Adult Skin
180°F (82°C) Nearly instantaneous
170°F (77°C) Nearly instantaneous
160°F (71°C) About 1/2 second
150°F (66°C) About 1-1/2 second
140°F (60°C) Less than 5 seconds
130°F (54°C) About 30 seconds
120°F (49°C) More than 5 minutes
Figure 6 shows the approximate water temperatures produced at various
thermostat settings. Short repeated heating cycles caused by small hot
water uses can cause temperatures at the point of use to exceed the
thermostat setting by up to 20°F (11°C). If you experience this type of use
you should consider using lower temperature settings to reduce scald
hazards.
Valves for reducing point of use temperature by mixing cold and hot water
are available. Also available are inexpensive devices that attach to faucets
to limit hot water temperatures. Contact a licensed plumber or the local
plumbing authority.
To avoid any unintentional changes in water temperature settings, the control
has a tamper resistant feature for changing the temperature setting. To
change the temperature setting follow these instructions:
1. "Wake Up" the temperature indicators by holding down both the
"COOLER" and "HOTTER" temperature adjustment buttons at the same
time for one second (see Figure 6). One or two of the temperature
indicators will light up. These indicators will only remain on for 30
seconds if no further buttons are pressed. After 30 seconds the control
will go back to "Sleep" mode.
2. Release both of the temperature adjustment buttons.
A. To decrease the temperature press and release the "COOLER"
button until desired setting is reached.
B. To increase the temperature press and release the "HOTTER" button
until the desired setting is reached.
NOTE: Holding down the button will not continue to lower or raise the
temperature setting. The button must be pressed and released for each
temperature change desired.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT
OFF, TURN OFF THE MAIN MANUAL GAS SHUTOFF VALVE TO THE
APPLIANCE. SEE FIGURE 1 (G).
CHECKING VENTING
The following steps shall be followed with each appliance connected to the
venting system placed in operation, while any other appliances connected
to the venting system are not in operation.
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal pitch, as
required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the
CAN/CGA B149 Installation codes and these instructions. Determine
that there is no blockage or restriction, leakage, corrosion and other
deficiencies which could cause an unsafe condition.
3. So far as is practical, close all building doors and windows and all
doors between the space in which the water heater(s) connected to
the venting system are located and other spaces of the building. Turn
on all appliances not connected to the venting system. Turn on all
exhaust fans, such as range hoods and bathroom exhausts, so they
shall operate at maximum speed. Close fireplace dampers.
4. Follow the lighting instruction. Place the water heater being inspected
in operation. Adjust thermostat so appliance shall operate continuously.
5. Test for vent system leakage after 5 minutes of main burner operation.
TEMPERATURE REGULATION
DANGER
THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT WATER
TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHING AND
LAUNDRY USE CAN CAUSE PAINFUL SCALDING WITH POSSIBLE
SERIOUS AND PERMANENT INJURY. THE TEMPERATURE AT WHICH
INJURY OCCURS VARIES WITH THE PERSON’S AGE AND THE TIME
OF THE EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN,
AGED OR DISABLED PERSONS INCREASES THE HAZARDS TO
THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER
TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER LEAVE A
CHILD OR DISABLED PERSON UNATTENDED IN A BATHTUB OR
SHOWER.
THE WATER HEATER SHOULD BE LOCATED IN AN AREA WHERE
THE GENERAL PUBLIC DOES NOT HAVE ACCESS. IF A SUITABLE
AREA IS NOT AVAILABLE, A COVER SHOULD BE INSTALLED OVER
THE THERMOSTAT TO PREVENT TAMPERING. Suitable covers are
available through A.O. Smith Water Products Company, 5621 W. 115th
Street, Alsip, IL 60803. In Canada, A.O. Smith Enterprises, LTD., P.O.
Box 310- 768 Erie Street, Stratford, Ontario N5A 6T3.
It is recommended that lower water temperatures be used to avoid the
risk of scalding. It is further recommended, in all cases, that the water
temperature setting be set for the lowest temperature that satisfies your
hot water needs. This will also provide the most energy efficient operation
of the water heater. The water temperature adjustment was factory set at
the lowest temperature. Pressing the "COOLER"
button decreases
temperature and pressing the "HOTTER"
button increases the
temperature.
Time to Produce
Display 2nd & 3rd Degree
Temperature Setting B C D E F Burns on Adult Skin
F = approx. 180°F (82°C) Nearly instantaneous
D = approx. 160°F (71°C) About 1/2 seconds
B = approx. 140°F (60°C) Less than 5 seconds
= approx. 120°F (49°C) More than 5 minutes
FIGURE 6