TEMPERATURE REGULATION
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 (16.7°C). If you experience this type of use you should consider using lower temperature settings to reduce scald hazards.
Any water heater’s intended purpose is to heat water. Hot water is needed for cleansing, cleaning, and sanitizing (bodies, dishes, clothing). Untempered hot water can present a scald hazard. Depending on the time element, and the people involved (adults, children, elderly, infirm, etc.) scalding may occur at different temperatures.
on the thermostat, read the “Temperature Regulation” section in this manual, see Figures 31 and 32.
Never allow small children to use a hot water tap, or to draw their own bath water. Never leave a child or handicapped person unattended in a bathtub or shower.
NOTE: A water temperature range of
The thermostat of this water heater has been factory set at its lowest position (PILOT LIGHTING). It is adjustable and must be reset to the desired temperature setting to reduce the risk of scald injury. The mark (
) indicative of approximately 120°F (49°C) is preferred starting point.
Turn the water temperature dial clockwise ( 
) to decrease
the temperature, or counterclockwise ( 
) to increase the temperature.
Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance.
HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the infirm, or physically/mentally handicapped. If anyone using hot water in your home fits into one of these groups or if there is a local code requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a mixing valve, shall be used at the hot water taps used by these people or at the water heater. Mixing valves are available at plumbing supply or hardware stores, see Figure 2 on page 6. Follow manufacturer’s instructions for installation of the valves. Before changing the factory setting
FIGURE 31.
Temperature | Time to Produce 2nd & 3rd |
Settings | Degree Burns on Adult Skin |
VERYHOT=approx.160°F(71°C) | About 1/2 second |
C = approx. 150°F (66°C) | About |
B = approx. 140°F (60°C) | Less than 5 seconds |
A = approx. 130°F (54°C) | About 30 seconds |
= approx. 120°F (49°C) | More than 5 minutes |
LOW = approx. 80°F (27°C) | - - - - - - - - - - - - - - - - |
FIGURE 32.
FOR YOUR INFORMATION
START UP CONDITIONS
DRAFT HOOD OPERATION
Check draft hood operation by performing a worst case depressurization of the building. With all doors and windows closed, and with all air handling equipment and exhaust fans operating such as furnaces, clothes dryers, range hoods and bathroom fans, a match flame should still be drawn into the draft hood of the water heater with its burner firing. If the flame is not drawn toward the draft hood, shut off the water heater and make necessary air supply changes to correct.
CONDENSATION
Whenever the water heater is filled with cold water, some condensate will form while the burner is on. A water heater may appear to be leaking when in fact the water is condensation. This usually happens when:
a.A new water heater is filled with cold water for the first time.
b.Burning gas produces water vapor in water heaters, particularly high efficiency models where flue temperatures are lower.
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