American Water Heater Ultra Low Nox Manuel d'instructions télécharger pdf (Page 17)

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

ﬂ ame should still be drawn into the draft hood of the water heater with

its burner ﬁ ring. If the ﬂ ame is not drawn toward the draft hood, shut

off water heater and make necessary air supply changes to correct.

CONDENSATION

Whenever the water heater is ﬁ lled with cold water, some condensate will

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 120°F-140°F (49°C-60°C) is

recommended by most dishwasher manufacturers.

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. Some States have a requirement for a lower setting.

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.

FIGURE 15.

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, inﬁ rm,

etc.) scalding may occur at different temperatures.

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 inﬁ rm, or physically/

mentally handicapped. If anyone using hot water in your home

ﬁ ts 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 satisﬁ es your hot water needs, a means 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, see Figure 2. Follow manufacturer’s

instructions for installation of the valves. Before changing the factory

setting on the thermostat, read the “Temperature Regulation” section

in this manual, see Figures 15 and 16.

TEMPERATURE REGULATION

VERY HOT= approx. 160°F (71°C)

About 1/2 second

C = approx. 150°F (66°C) About 1-1/2 seconds

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 16.

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 ﬁ lled with cold water for the ﬁ rst time.

b. Burning gas produces water vapor in water heaters, particularly

high efﬁ ciency models where ﬂ ue temperatures are lower.

c. Large amounts of hot water are used in a short time and the reﬁ ll

water in the tank is very cold.

Moisture from the products of combustion condense on the cooler

tank surfaces and form drops of water which may fall onto the burner

or other hot surfaces to produce a “sizzling” or “frying” noise.

Excessive condensation can cause pilot outage due to water running

down the ﬂ ue tube onto the main burner and putting out the pilot.

Temperature

Settings

Time to Produce 2nd & 3rd

Degree Burns on Adult Skin

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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American Water Heater Ultra Low Nox Manuel d'instructions Page 17

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