A.O. Smith TC-049-R2 manual Smelly Water

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RESIDENTIAL GAS AND ELECTRIC WATER HEATER

SERVICE HANDBOOK

TECHNICAL BULLETIN

BULLETIN 22

SMELLY WATER

CAUSE

The most common cause of “smelly water” is a non-toxic sulfate reducing bacteria, scientifically termed Divibrio Sulfurcans. This bacteria often enters the water system through construction or a break in ground piping. The bacteria creates the energy it needs to survive by converting sulfate (SO4) to hydrogen sulfide (H2S) gas you smell in the water.

Hydrogen sulfide gas is distinctive because of its rotten egg-like stench. Its presence can severely affect the taste as well as the odor of the water. Occasionally this bacteria can be accompanied by black deposits, the result of pipe and fitting corrosion. In extremely high concentrations, hydrogen sulfide gas can be toxic though the gas is detectable long before harmful levels are reached.

The requirements for the bacteria to thrive are: a) an elevated level of sulfur in the water, b) activated hydrogen from cathodic reactions within the tank, c) water with little or no dissolved oxygen, d) and temperatures below 138°F.

Items that can increase the potential for this bacteria are: a) water softeners,

b)well water, c) and long periods of no water movement. Other factors that may contribute to smelly water:

•Chlorides of Magnesium and Calcium leave a bitter taste.

•Chloride of Sodium produces a salty taste.

•Sulfates (50 ppm) give a medicinal taste.

•Carbon Dioxide in a low pH water gives fizzy water.

•Iron and tannic waters also give a bad taste and odor.

TREATMENT

The simplest treatment available is the shock-chlorination of the system. This is a surface treatment, and often requires repeated trials in heavily infected systems. The chlorination of a system requires that you follow each step explicitly to avoid an un-treated portion of the piping system from reinfecting another part. See Bulletin 23 for the chlorination procedure. Longer lasting solutions include chlorination or aeration of the water supply.

NOTE

Since smelly water is caused by a bacteria presence and is not caused by the water heater, any treatment would not be considered warranty related.

A.O. Smith Water Products Company

53

Training Department

©2002

Ashland City, Tennessee

 

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Page 53 Page 55
Contents Smith Service Handbook Table of Contents Residential GAS and Electric Water HeaterQualifications Tools Required General Section Service Guidelines FormulasMiscellaneous Information Construction General SectionInstallation of Residential GAS Water Heater Lighting PilotResidental GAS Water Heater Service Construction See also General section of this manualNormal Operation Residential GasService Handbook Setting Approximate Temperature F Time To Cause Injury Enters Here 000Fuel BTUPilot Gas If … … thenManifold Gas PressureElectrical Testing Thermocouple output test Procedures/ConditionsSooting causes If … … then If… … then ProceduresResidential Gas Electrical Testing CondensationCondensation is a mild acid it will corrode steel Exhaust Venting Notes 125 Standard Residential Electric Water Heaters Construction Heating elementsVoltage Notes Residential ElectricNewer Temperature Surface Mounted Thermostat s and High Limit sLocation Range F Service Handbook Wiring Diagram Normal Sequence of OperationSingle Element Single Thermostat Single High Limit Circuit Operation From cold tank of waterElements Thermostats High Limit Wiring Diagram Operation From cold tank of waterElements Thermostats High Limits Wire Service Handbook Post Cold tank of water Single Electrical Service Single Phase Certification and Approvals Three Phase Unbalanced Circuit WattageElement Test Ohms Resistance Check Test Conditions Test probe on each terminal of an elementComplaint No Hot Water Conditions ProcedureResidential Electric Service Test voltage between 4 and 2 or T2 and L4 If … … thenComplaint Water Too Hot Conditions Residential Electric Service No Hot WaterTest between the two element terminals If … … then Voltage Check Test between 4 and 2 or L4 and T2 If … … thenTest around red wire then black wire to element If … … then Residential Electric Service Water Too HotGrounded Element Check Amperage Method Circuit Servicing Voltage Check Testing with the MultimeterComplaint No hot water Test Conditions Test between 1 and 3 or L1 and L3 If … … thenTest between high limit 4 and lower thermostat 1 or L4 Residential Electric Service Voltage Check No Hot WaterComplaint Lack of Hot Water Conditions Test between high limit 4 and lower thermostat 2 or L4Service Handbook Testing The A-7 Wiring Circuit Supply wiring may be a See Pages 25Prior To Post Test probe on each terminal of an element If … … then Test between upper high limit terminals 1 If … … then Power onVoltage Checks Test between upper high limit terminals 2Complaint Lack of Hot Water Test Conditions Test between lower high limit terminal 1 and 3 or L1 and L3Test Condition Test between the terminals of the lower element If … … thenPower on Thermostats are satisfied Replacement elements Watts divided by Volts = AmpsVolts times Amps = Watts Service Handbook Smith Technical Bulletins WHY Water Heater Tanks Leak What Prevention WHY Water Heater Tanks Leak What WHY PreventionWater Conditions Effects Water HammerGeneral FIXSymptoms Mineral BUILD-UPCause Aluminum Hydroxide If tank is new with no lime build-up to any degreeDiscolored Water TreatmentSmelly Water Chlorination Procedure ProcedureNot Enough HOT Water GAS TestNot Enough HOT Water Electric Thermal Expansion Follow these easy steps to diagnose thermal expansionService Handbook Leaking Temperature and Pressure Relief Valve For every technical problem There is a solution

TC-049-R2 specifications

The A.O. Smith TC-049-R2 is a highly efficient and reliable water heater designed to meet the needs of both residential and light commercial applications. This gas-fired water heater offers a perfect blend of performance, efficiency, and durability, making it a popular choice among homeowners and business owners alike.

One of the standout features of the A.O. Smith TC-049-R2 is its tankless design. Unlike traditional water heaters with storage tanks, the TC-049-R2 heats water on demand, which means you only use energy when you need hot water. This not only results in lower energy bills but also provides an endless supply of hot water, ideal for households with multiple bathrooms or high hot water demands.

The TC-049-R2 is powered by natural gas, which enhances its efficiency and operating costs. With an impressive energy factor, this water heater is designed to conserve energy without compromising on performance. The unit also boasts a high recovery rate, which means it can quickly replenish hot water, ensuring you’re never left waiting.

Another notable technology in the A.O. Smith TC-049-R2 is its advanced electronic ignition system, which provides reliable start-up and reduces the chance of pilot light issues. Additionally, the unit features a scaled-down footprint, making it suitable for installation in tighter spaces, such as closets or utility rooms, without sacrificing performance.

Durability is a key characteristic of the TC-049-R2, as it is constructed with high-quality materials designed to resist corrosion and withstand typical wear and tear. The unit is equipped with a durable heat exchanger that enhances both efficiency and longevity, ensuring many years of reliable service.

Safety features are also prioritized in the A.O. Smith TC-049-R2. It comes equipped with advanced safety controls that prevent overheating and ensure safe operation. This offers peace of mind for users, knowing that the unit has multiple safeguards in place.

Overall, the A.O. Smith TC-049-R2 is an excellent choice for those seeking an efficient, reliable, and safe water heating solution. Its combination of advanced features, innovative technology, and robust construction makes it a leader in the water heater market, providing convenience and comfort to its users for years to come.
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