American Water Heater BCG3 사용자 설명서

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The  following  practices  will  ensure  longer  life  and  enable  the 

unit to operate at its designed efficiency:
1.  Once a month the heater should be flushed. Open the drain 

valve and allow two gallons of water to drain from the heater. 

Inlet water valve should remain open to maintain pressure in 

tank.

2.  A  cleanout  opening  is  provided  for  periodic  cleaning  of  the 

tank. Gas must be shut off and heater drained before opening 

cleanout.

To clean heater through cleanout opening, proceed as follows:
3.  Drain heater.
4.  remove outer cover plate from lower side of heater jacket.
5.  remove six (6) hex head screws securing tank cleanout plate 

and remove plate.

6.  remove lime, scale, or sediment using care not to damage 

the glass lining.

7.  Inspect  cleanout  plate  gasket,  if  new  gasket  is  required, 

replace with part no. 9004099215.

8.  Install  cleanout  plate.  Be  sure  to  draw  plate  up  tight  by 

tightening screws securely.

9.  replace outer jacket cover plate. 
In  some  water  areas  the  sediment  might  not  be  removed 

by  this  method  and  may  result  in  the  water  heater  making 

rumbling  or  boiling  noises.  To  dissolve  and  remove  these 

more  stubborn  mineral  deposits,  Un•lIMe  Professional 

Delimer should be used.

Un•lIMe in the 5 gallon size is recommended for deliming of all 

models.  Contact  your  local  dealer,  distributor  or,  water  heater 

manufacturer.
Prepare the Water Heater
To  delime  the  water  heater  using  the  Flo-Jug  method,  first 

prepare the heater for deliming.

Flammable hydrogen gases

may be present.

Keep all ignition sources away

from faucet when turning on

hot water.

Do not smoke or have open flame or sparks in vicinity of heater. 

Do not mix Un•lIMe with other chemicals. Do not allow contact 

with magnesium, aluminum or galvanized metals.

lime accumulation not only reduces the life of equipment but also 

reduces efficiency of the heater and increases fuel consumption.
The usage of water softening equipment greatly reduces the hardness 

of the water. however, this equipment does not always remove all of 

the hardness (lime). For this reason it is recommended that a regular 

schedule for deliming be maintained.
The  time  between  cleaning  will  vary  from  weeks  to  months 

depending upon water conditions and usage.
The depth of lime buildup should be measured periodically. heaters 

equipped with cleanouts will have about 2" of lime buildup when 

the level of lime has reached the bottom of the cleanout opening. A 

schedule for deliming should then be set up,based on the amount 

of time it would take for a 1" buildup of lime. It is recommended that 

the water heater initially be inspected after 6 months.
example 1:

Initial inspection after 6 months shows 1/2" of lime accumulation. 

Therefore, the heater should be delimed once a year.
example 2:

Initial inspection after 6 months shows 2" of lime accumulation. 

Therefore, the heater should be delimed every 3 months.

Un•lIMe is recommended for deliming.  Un•lIMe is a patented 

food grade acid which is safe to handle and does not create the 

harmful fumes which are associated with other products.
Un•lIMe may be obtained from your dealer, distributor or water heater 

manufacturer. Order Part number 9005416105, 1 gallon, packed 4 

gallons per case or Part number 9005417105, 5 gallon  container.
nOTe: Un•lime is not available for use in Canada.
hydrochloric base acids are not recommended for use on glass 

lined tanks.
Observe handling instructions on label of product being used.