American Water Heater GAS-FIRED COMMERCIAL WATER HEATER 用户手册

 

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The following maintenance should be performed by a qualified service 
technician at the minimum periodic intervals suggested below.  In some 
installations, the maintenance interval may be more frequent depending on 
the amount of use and the operating conditions of the water heater.  Regular 
inspection and maintenance of the water heater will help to insure safe and 
reliable operation. 
 
1.  Annual checks of the ignition systems (millivolt and electronic), 

temperature controls and any other water heater controls are necessary 
to ensure proper operation.  Also, all safety shut-off valves must be 
checked to verify proper operation and tightness. 

 
2.  The flow of combustion and ventilation air MUST NOT be restricted.  

Clear the combustion air openings of any dirt, dust, or other restrictions. 
WARNING! The ventilation air system may be HOT. 

 
3.  At all times keep the water heater area clear and free from combustible 

materials, gasoline and other flammable vapors and  liquids.

4.  Bi-annually conduct a visual check of the pilot and burner flames to 

determine that they are burning properly.  See “Burner Flame Check” 
section on page 29 for example of proper burner flame pattern.

Water heaters are heat producing appliances.  To avoid damage or injury 
there shall be no materials stored against the water heater or vent system, 
and proper care shall be taken to avoid unnecessary contact (especially by 
children) with the water heater and vent system.  UNDER NO 
CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS 
GASOLINE OR PAINT THINNER BE USED OR STORED IN THE 
VICINITY OF THIS WATER HEATER, VENT SYSTEM OR IN ANY 
LOCATION FROM WHICH FUMES COULD REACH THE WATER 
HEATER OR VENT SYSTEM.