A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface Ignition instruction manual

Models: Residential Power Vent Gas Water Heaters with Hot Surface Ignition

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Temperature Regulation

Temperature Regulation

Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30°F high- er or lower at the point of use such as, bathtubs, showers, sink, etc.

Any water heaters intended purpose is to heat water. Hot water is needed for cleaning, (bodies, dishes, clothing). Hot water will present a scald hazard. Depending on the time element, and the people involved (normal adults, children, toddlers, elderly, infirm, etc.) scalding may occur at differ- ent temperatures.

Manual background WARNING

HOTTER WATER CAN SCALD: Water heaters are intend- ed to produce hot water. Water heated to a temperature which will satisfy clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be perma- nently injured by hot water than others. These include the elderly, children, the infirm, or physically/mentally hand- icapped. If anyone using hot water in your home fits into one of these groups or if there is a local code or state law 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, some type of tempering device, such as a mixing valve, should 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. A qualified plumber should be consulted. Follow manufac- turers instructions for installation of the valves. Before changing the factory setting on the thermostat, read the “Temperature Regulation” section in this manual.

Manual background WARNING

Never allow small children to use a hot water tap, or to draw their own bath water. Never leave a child or hand- icapped person unattended in a bathtub or shower.

The thermostat of this water heater has been factory set at its lowest position, to reduce the risk of scald injury. It is adjustable and must be reset to the desired temperature set- ting. The mark ( ▼ ) (on temperature setting of gas valve) indicative of approximately 120°F is preferred starting point. Some states have a requirement for a lower setting. If you need hotter water, follow directions for temperature adjustment, but beware of the warnings in this section.

Pressing the “COOLER” ● button decreases temperature and pressing the “HOTTER” ●button increases the tem- perature.

To avoid any unintentional changes in water temperature settings, the control has a tamper resistant feature for

changing the temperature setting. To change the tempera- ture setting follow these instructions:

1.“Wake Up” the temperature indicators by holding down both “COOLER” and “HOTTER” temperature adjust- ment buttons at the same time for one second (See Figure below). 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 the 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.

TEMPERATURE INDICATORS

TEMPERATURE ADJUSTMENT BUTTONS

 

 

Time to Produce

Temperature Setting

Display

2nd & 3rd Degree

A B C

Burns on Adult Skin

 

 

 

C - Flashing = approx. 160°F

● ● ● ● ● ●

About 1/2 seconds

 

 

 

C = approx. 150°F

● ● ● ● ● ●

About 1-1/2 seconds

 

 

 

B = approx. 140°F

● ● ● ● ● ●

Less than 5 seconds

 

 

 

A = approx. 130°F

● ● ● ● ● ●

About 30 seconds

 

 

 

▼ = approx. 120°F

● ● ● ● ● ●

More than 5 minutes

 

 

 

WARM = approx. 80°F

● ● ● ● ● ●

- - - - - - - - - - - - - - - -

 

 

 

NOTE: Water temperature range of 120°–140°F recom- mended by most dishwasher manufacturers.

Manual background WARNING

Should overheating occur or the gas supply fail to shut off, turn “OFF” the manual gas control valve to the appliance.

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A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface Ignition instruction manual Temperature Regulation