Справочник Пользователя для American Water Heater 319407-002

22

Moisture from the products of combustion condenses on the 

tank surface and the outside jacket of the water heater and 

forms drops of water which may fall onto the burner or other 

hot surfaces. This will produce a “sizzling” or “frying” noise. 

NOTE: This condensation is normal and should not be 

confused with a leaking tank. Condensation may increase or 

decrease at different times of the year.
High efficient energy saver water heaters will produce 

larger amounts of condensation on initial start-up or when 

a large amount of hot water is being used. NOTE: Do not 

confuse this with a “tank leak”. Once the water reaches a 

temperature of 120°F and the tank warms up (usually 1-2 

hours), the condensation will stop.
IMPORTANT: It is always recommended that a suitable 

metal drain pan be installed under the water heater 

to protect the area from water damage resulting from 

normal condensation production, a leaking tank or piping 

connections. Refer to “Location Requirements” on page 

4. Under no circumstances is the manufacturer to be held 

responsible for any water damage in connection with this 

water heater.

During the normal operation of the water heater, sounds or 

noises may be heard. These noises are common and may 

result from the following:
1.  Normal expansion and contraction of metal parts during 

periods of heat-up and cool-down.

2.  Condensation causes sizzling and popping within the 

burner area and should be considered normal.

3.  Sediment buildup in the tank bottom will create varying 

amounts of noise and may cause premature tank failure. 

Drain and flush the tank as directed under “Draining and 
Flushing”.

The water heater may give off a small amount of smoke 

and odor during the initial start-up of the unit. This is due to 

the burning off of oil from metal parts of a new unit and will 
disappear after a few minutes of operation. 

This water heater is designed to automatically shut-off in the 

event of the following:
1.  The water temperature exceeds 189°F (87°C) for 160°F 

models.

3.  Excessive combustion chamber temperatures.
4.  The presence of flammable vapors.
This unit is equipped with a flammable vapor sensor, designed 

to shut off the gas supply in the event the heater has been 

exposed to flammable vapors (spilled gasoline or paint fumes 

for example). IMPORTANT:  If the flammable vapor sensor 

activates a qualified service person must be contacted to reset 

the water heater. This unit is also equipped with a thermal 

switch designed to shut off the gas control valve/thermostat 

in the event the water heater has poor combustion caused 

by a blocked vent or insufficient combustion air. If the switch 

opens, check the flame-trap for signs of high temperature (blue 

or black discoloration), and inspect your installation for any 

problems with venting or combustion air (See Troubleshooting 

Flowchart on page 29). Reset the thermal switch by depressing 

the small button in the center of the switch. 

IMPORTANT: Correct any issues prior to resetting the switch. 

Contact the Product Service and Support Department
for service information at: 1-877-817-6750. 

A temperature limit switch or ECO (Energy Cut Off)  sensor 

located in the gas control valve\thermostat, is used to shut off the 

water heater if the water temperature exceeds 189°F (87°C). 
The Diagnostic Status Light will flash a code indicating 

an “Overheat Failure” (4 Flashes).  See “Operating the 

Temperature Control System.”  If the gas control valve/

thermostat has an “ECO Lockout” the gas control valve/

thermostat must be replaced by a qualified person. Contact 

your local dealer for service information.

Each water heater contains at least one anode rod, 

which will slowly deplete (due to electrolysis) prolonging 

the life of the water heater by protecting the glass-lined 

tank from corrosion. Adverse water quality, hotter water 

temperatures, high hot water usage, hydronic heating 

devices, and water softening methods can increase 

the rate of anode rod depletion. Once the anode rod 

is depleted, the tank will start to corrode, eventually 

developing a leak.
Certain water conditions will cause a reaction between the 

anode rod and the water. The most common complaint 

associated with the anode rod is a “rotten egg smell” 

produced from the presence of hydrogen sulfide gas 

dissolved in the water. 

IMPORTANT: Do not remove this rod permanently as it will 

void any warranties. A special anode rod may be available 

if water odor or discoloration occurs.

NOTE: This rod may reduce but not eliminate water odor 

problems. The water supply system may require special 

filtration equipment from a water conditioning company to 

successfully eliminate all water odor problems.
Artificially softened water is exceedingly corrosive because 

the process substitutes sodium ions for magnesium and 

calcium ions. The use of a water softener may decrease 

the life of the water heater tank.
The anode rod should be inspected after a maximum of 

three years and annually thereafter until the condition of 

the anode rod dictates its replacement. 

NOTE: Artificially softened water requires the anode rod to 

be inspected annually.
The following are typical (but not all) signs of a depleted 

anode rod:
• 

The majority of the rods diameter is less than 3/8”.

• 

Significant sections of the support wire (approx. 1/3 or 

more of the anode rod’s length) are visible.

If the anode rod show signs of either or both it should be 

replaced. NOTE: Whether re-installing or replacing the anode 

rod, check for any leaks and immediately correct if found.
In replacing the anode:
1.  Turn off gas supply to the water heater.
2.  Shut off the water supply and 

open a nearby hot water faucet to 

depressurize the water tank.

3.  Drain approximately 5 gallons of 

water from tank. (Refer to “Draining 

and Flushing” for proper procedures). 

Close drain valve.

4.  Remove old anode rod.
5.  Use Teflon® tape or approved pipe 

sealant on threads and install new 

anode rod.

6.  Turn on water supply and open a 

nearby hot water faucet to purge air 

from water system.

7.  Check for any leaks and immediately 

correct any if found.

8.  Restart the water heater as directed in this manual. See 

the Repair Parts Illustration for anode rod location.

TEFLON 

®

 is a registered trademark of E.I. Du Pont De Nemours and Company.

Figure 25:

Anode Rod Depletion