14
CAUTION
THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT
WATER TEMPERATURES REQUIRED FOR AUTOMATIC
DISHWASHER 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
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.
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 dial be set for the lowest temperature
which satisfies your hot water needs. This will also provide the
most energy efficient operation of the water heater. The water
temperature adjusting dial was factory set at the lowest
temperature; Turning the dial counterclockwise
decreases
temperature, and clockwise
increases temperature.
Time to Produce 2nd & 3rd
Temperature Setting
Degree Burns on Adult Skin
VERY HOT=160°F
About 1/2 second
C=150°F
About 1-1/2 seconds
B=140°F
Less than 5 seconds
A=130°F
About 30 seconds
HOT=120°F
More than 5 minutes
LOW=approx.80°F
- - - - - - - - - - - - - - - - -
FIGURE 10
SETTING THE WATER HEATER TEMPERATURE AT 120°F WILL
REDUCE THE RISK OF SCALDS. Some states require settings
at specific lower temperatures.
Figure 10 shows the approximate water temperatures produced
at various thermostat dial 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 30°F. If
you experience this type of use you should consider using lower
temperature settings to reduce scald hazards.
Valves for reducing the point-of-use temperature by mixing cold
and hot water are available. See figure 2. Also available are
inexpensive devices that attach to faucets to limit hot water
temperatures. Contact a licensed plumber or the local plumbing
authority.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL
TO SHUTOFF, TURN OFF THE MAIN MANUAL GAS SHUTOFF
VALVE TO THE APPLIANCE. SEE FIGURE 1 (G).
MAINTENANCE
CAUTION
DISCONNECT FROM ELECTRICAL SUPPLY BEFORE
SERVICING UNIT. FOR YOUR SAFETY, WATER HEATER
SERVICE SHOULD BE PERFORMED ONLY BY A QUALIFIED
SERVICE TECHNICIAN. READ THE GENERAL SAFETY
INFORMATION SECTION FIRST.
USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS
COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE
GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD
BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY
A QUALIFIED SERVICE TECHNICIAN.
MAIN BURNER
Check main burner every 12 months for proper flame
characteristics. This is done by removing door(s) on heater, fig.
1. The main burner should provide complete combustion of gas;
ignite rapidly; give reasonable quiet operation; cause no
excessive flame lifting from burner ports. Make sure that the
flow of combustion and ventilation air is not blocked.
If proper flame characteristics are not evident, check for
accumulation of lint or other foreign material that restricts or
blocks the air openings in the heater or burner. Also check AIR
REQUIREMENTS.
WARNING
SOOT BUILD-UP INDICATES A PROBLEM THAT REQUIRES
CORRECTION BEFORE FURTHER USE. Consult with a
qualified service technician.
Should the main burner or burner air openings require cleaning,
turn the control switch to “OFF” position and allow the burner to
cool. Remove the burner and clean with a soft brush. Clean
main burner orifice with a suitable soft material.
HIGH TEMPERATURE LIMIT SWITCH
The thermostat has a built-in limit switch which will shut off gas
to burner in case of excessive water temperatures. The pilot
cannot be relit until the water temperature is reduced and ECO
reset. It is important that a serviceman be called to determine
the reason for limit operation and thus avoid repeated thermostat
resetting. Lower the temperature adjustment dial setting on
control.
WATER TEMPERATURE
ADJUSTING DIAL
