State Industries STC-080 Aluminum Hydroxide, If tank is new with no lime build-up to any degree

Page 28

RESIDENTIAL GAS, NON POWER VENTED, WATER HEATER

SERVICE HANDBOOK

TECHNICAL BULLETIN - 14

ALUMINUM HYDROXIDE

SYMPTOMS

“Crackling”, “gurgling”, or “popping” noises from new water heaters (installed less than six months).

CAUSE

In a few isolated parts of the United States where the water supply has a relatively high pH (8+), water conditions will react with the aluminum anode to form excessive amounts of aluminum hydroxide on the anode and in the bottom of the tank. Aluminum hydroxide looks like “jelly beads” or a green, blue or gray gel like substance in the heater drain or at faucet aerators.

THE FIX

This procedure should only be performed by someone with abilities equal to a licensed

 

tradesman. Aluminum hydroxide can be removed by using one of the methods outlined.

 

 

 

 

 

 

If tank is new with no lime build-up to any degree:

 

1

 

Turn off the heater.

 

2

 

Remove the anode.

 

3

 

Flush the tank thoroughly with water.

 

4

 

Replace the aluminum anode (identifiable by smooth surface on plug) with magnesium

 

 

 

anode (identifiable by weld bead on plug).

 

If the tank is new with lime build-up to any degree:

 

1

 

Turn off the heater.

 

2

 

Drain the heater.

 

3

 

Remove the anode.

 

4

 

Add UN-LIME to the tank.

 

 

 

20-40 gallon models (use 3 gallons of UN-LIME)

 

 

 

41-65 gallon models (use 5 gallons of UN-LIME)

 

 

 

66-100 gallon models (use 7 gallons of UN-LIME)

 

 

 

(On electric models, be certain the lower element is immersed in solution.)

 

5

 

Heat the UN-LIME to a temperature between 140°F to 160°F.

 

 

 

• GAS - Heat for 7 to 10 minutes.

 

 

 

 

 

 

6

 

Shut off the water heater.

 

7

 

Allow the heated UN-LIME to stand for up to 12 minutes.

 

8

 

Drain and flush the tank. Caution: UN-LIME will still be hot.

 

9

 

Replace the original aluminum anode with a magnesium anode.

 

10

 

Fill the system with water.

 

11

 

Turn heater fuel “ON”.

NOTE

Since aluminum hydroxide is a product of a chemical reaction dependent on the water condition,

 

 

any treatment is not considered warranty related.

 

State Water Heater

27

Technical Training Department

© 2004

 

Ashland city, TN

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Page 27 Page 29
Contents NON Power Vented Models Standard Residential GAS Water HeatersTable of Contents Residential GAS Service Handbook IntroductionTools Required Miscellaneous InformationFormulas To convertConstruction Installation of Residential GAS Water Heater Residental GAS Water Heater Service Normal Operation Residential GasResidential Gas Setting Approximate Temperature F Degree Burns on Adult SkinService 000Fuel BTUIf … … then TestThermocouple output test Procedures/Conditions Electrical TestingSooting causes If … … then Safety drop out test ProceduresIf… … then CondensationCondensation is a mild acid it will corrode steel Exhaust Venting Notes Flammable Vapor Ignition Resistant Fvir DesignPossible Service issues associated with a blocked screen LDO Screen LINT, DUST, OIL ScreensFlame Arrestor Combustion Chamber Temperature Sensor Possible service issues associated with the flame arrestorONE Piece Pilot Burner Assembly To replace a pilot assembly Sealed Combustion ChamberFive point inner door seal inspection Other features Important Service ReminderPiezo Igniter WHY Water Heater Tanks Leak What Prevention What WHY Prevention Water ConditionsEffects GeneralFIX Symptoms CauseAluminum Hydroxide If tank is new with no lime build-up to any degreeDiscolored Water TreatmentSmelly Water Chlorination Procedure ProcedureNot Enough HOT Water GAS TestThermal Expansion FIX Leaking Temperature and Pressure Relief Valve Symptoms General FIX

STC-080 specifications

The State Industries STC-080 is a high-efficiency water heater designed to meet the demands of residential and light commercial applications. With its strategic engineering and innovative technology, it offers a reliable solution for those seeking comfort, efficiency, and sustainability in water heating.

One of the main features of the STC-080 is its exceptional efficiency rating. It operates with an impressive Energy Factor (EF) that not only reduces energy consumption but also translates into lower utility bills for users. The unit utilizes a streamlined heat exchanger design, optimizing heat transfer and minimizing energy loss. This design ensures that users can enjoy hot water on demand without the worry of excessive energy expenditure.

The STC-080 is equipped with advanced heating technologies, including a dual-flame burner system. This system ensures rapid heating while providing consistent water temperature, which is essential for residential applications where demand can vary throughout the day. The integration of advanced controls also allows for precise temperature adjustments, giving users full control over their hot water supply.

Durability and reliability are key characteristics of the STC-080. Constructed from high-quality materials, it features a heavy-duty steel tank with a glass-lined interior that provides excellent corrosion resistance. This not only enhances the product's longevity but also ensures consistent performance even in challenging water conditions. Additionally, the unit includes an anode rod that further protects against corrosion, extending service life and reducing maintenance needs.

The STC-080 is designed for easy installation, with flexibility that accommodates various plumbing setups. Its compact design allows for placement in tighter spaces, making it an ideal choice for homes where space is at a premium.

Safety is another priority with the STC-080. It includes multiple safety features such as a temperature and pressure relief valve, ensuring safe operation. The unit also complies with stringent industry standards, providing peace of mind to homeowners and businesses alike.

In summary, the State Industries STC-080 is a standout water heating solution that combines efficiency, reliability, and advanced technology. With its robust construction and user-friendly features, it caters to the evolving needs of both residential and light commercial users, making it an excellent investment for those looking to enhance their water heating systems while being conscious of energy usage.
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