A.O. Smith 186589-004 Скачать руководство пользователя страница 19

19

TEMPERATURE REGULATION

TEMPERATURE REGULATION

HOT WATER CAN SCALD: Water heaters are intended to 
produce hot water. Water heated to a temperature that 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 
in

fi

 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 

provincial, state law or local code requiring a speci

fi

 c hot water 

temperature at the tap, then you must take special precautions. 
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.
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 be set for the lowest temperature that 
satis

fi

 es your hot water needs. This will also provide the most 

energy ef

fi

 cient operation of the water heater.

Figure 28 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 17°C 
(30°F).  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 (see Figures 2 & 7). 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 SHUT OFF, TURN OFF THE MAIN MANUAL GAS CON-
TROL VALVE TO THE APPLIANCE (SEE FIGURE 1).
NOTE: A water temperature range of 49°C-60°C (120°F-140°F) 
is recommended by most dishwasher manufacturers.  The ther-
mostat 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 49°C (120°F) 
is preferred starting point. Some provinces may have a require-
ment for a lower setting.
Turn the water temperature dial clockwise ( ) to decrease the 
temperature, or counterclockwise ( ) to increase the tempera-
ture.

Temperature Setting

Time to Produce 2nd & 3rd 

Degree Burns on Adult Skin

VERY HOT= approx. 71°C 

(160°F)

About 1/2 second

C = approx. 66°C (150°F)

About 1-1/2 seconds

B = approx. 60°C (140°F)

Less than 5 seconds

A = approx. 55°C (130°F)

About 30 seconds

 

 = approx. 49°C (120°F)

More than 5 minutes

LOW = approx. 27°C (80°F)

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

FIGURE 28

Содержание 186589-004

Страница 1: ...fety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER GAMA certification applies to all residential gas water heat ers with capacities of 20 to 100 gallons with input rating of 75 000 BTU Hr o...

Страница 2: ...it relates to the installation of gas fired water heaters The qualified installer must also be familiar with the design features and use of flammable vapor ignition resistant water heaters and have a...

Страница 3: ...3 GENERAL SAFETY...

Страница 4: ...iation ANSI American National Standards Institute NFPA National Fire Protection Association ASME American Society of Mechanical Engineers GAMA Gas Appliance Manufacturer s Association UL Underwriters...

Страница 5: ...TALL PER LOCAL CODES THERMAL EXPANSION TANK INSTALLTHERMALEXPANSION TANK IF WATER HEATER IS INSTALLED IN A CLOSED SYSTEM GAS CONTROL GAS PILOT MAIN BURNER PILOT PIEZO ELECTRODE THERMOCOUPLE FLUE BAFFL...

Страница 6: ...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...

Страница 7: ...environment in which the water heater is installed Wa ter heaters are sometimes installed in locations where leakage may result in property damage even with the use of a drain pan piped to a drain Th...

Страница 8: ...a space whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 cm per kW of the aggregate input rating of all appliances installed in that space VENT TERMINATION Before installing water h...

Страница 9: ...ny heating systems or component s used with a non potable water heating appli ance All piping components connected to this unit for space heating applications shall be suitable for use with potable wa...

Страница 10: ...TEMPERATURE PRESSURE RELIEF VALVE This heater is provided with a properly certified combination temperature pressure relief valve by the manufacturer The valve is certified by a nationally recognized...

Страница 11: ...and continues to release water immediately close the cold water inlet to the water heater follow the draining instructions and re place the temperature pressure relief valve with a new one WATER POTAB...

Страница 12: ...ution and wipe dry Wheninstalledatelevationsabove7 700feet 2 347meters input rating should be reduced at the rate of 4 percent for each 1 000 feet 305 meters above sea level which requires replacement...

Страница 13: ...ank must be filled with water Water must flow from the hot water faucet before turning ON gas to the water heater To fill the water heater with water 1 Close the water heater drain valve by turning th...

Страница 14: ...1 cm above if within 10 ft 3 m horizontally to a mechanical air supply inlet Minimum 12 in 30 cm from sides above or below a permanently closed window or door Minimum 7 ft 2 3 m above public sidewalk...

Страница 15: ...72m 68 in for 40 gal models and 1 93m 76 in for 50 gal 50 gal Hi Input and 75 gal models The maximum distance recommended is 2 03m 80 in or in compliance with Figure 16 Where the wall is combustible a...

Страница 16: ...junction of the outer corrugated tube and the trim plate inside with suitable sealant SEALANT TRIM PLATE INSIDE TRIM PLATE OUTSIDE FIGURE 19 UNCOMPRESSING THE CORRUGATED TUBING 1 Pull the inner corrug...

Страница 17: ...corrugated tube TOP VIEW 90 MAXIMUM BEND FIGURE 26 CONDITION 2 Where floor joists impede venting a rise or drop to complete the vent termination is possible All installations require 25mm 1 in clearan...

Страница 18: ...r door 12 Set thermostat to desired setting 13 If the pilot will not stay lit after several tries turn the gas control knob clock wise to OFF see Figure A If the appliance will not operate follow the...

Страница 19: ...ter uses can cause temperatures at the point of use to exceed the thermostat setting by up to 17 C 30 F If you experience this type of use you should consider using lower temperature settings to reduc...

Страница 20: ...effects of water hammer among others have installed devices such as pressure reducing valves check valves back flow preventers etc to control these types of problems When these devices are not equipp...

Страница 21: ...ssibility of injury under these conditions we recommend the hot water faucet located farthest away be opened for several minutes before any electri cal appliances which are connected to the hot water...

Страница 22: ...er heater will create dangerous conditions which can cause DEATH SERIOUS BODILY INJURY OR PROPERTY DAM AGE Contact a qualified installer or service agency to replace a flooded water heater Do not atte...

Страница 23: ...ater to run until it flows clean This will help prevent sediment build up in the tank It is normal for lime and scale deposits to form within the tank Such deposits will not be removed by periodic dra...

Страница 24: ...er heater 2 Follow Draining instructions 3 Turning counterclockwise remove the hex cap below the screw handle 4 Remove the washer and put the new one in place 5 Screw the handle and cap assembly back...

Страница 25: ...er from temperature pressure relief valve may be due to thermal expansion or high water pres sure in your area D The temperature pressure relief valve may be leaking at the tank fitting E Water from a...

Страница 26: ...gas utility company 3 Notify utility install dirt trap in gas line 4 Clean locate source and correct 5 Finger tighten then 1 4 turn with wrench 6 Replace thermocouple 7 Locate source and correct 8 Re...

Страница 27: ...3 Heater installed in a confined area 1 Provide ventilation to water heater Check flue way flue baffle burner 2 Clean locate source and correct 3 Provide fresh air ventilation SMOKING AND CARBON FORM...

Страница 28: ...28 NOTES...

Страница 29: ...used at water pressure not exceeding the working pressure shown on the heater filled with potable water free to circulate at all times and with the tank free of damaging water sediment or scale depos...

Страница 30: ...nt 125 Southeast Parkway Franklin TN 37068 phone 1 800 433 2545 The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed...

Страница 31: ...31 500 TENNESSEE WALTZ PARKWAY ASHLAND CITY TN 37015 PHONE 1 800 433 2545 FAX 1 800 433 2515 www aosmithwaterheaters com email parts hotwater com...

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