RESIDENTIAL GAS AND ELECTRIC WATER HEATER

SERVICE HANDBOOK

Residential Gas – continued

The instruction manual gives guidelines under “Air Requirements” and “Unconfined “ or “Confined Space” sections. If you want to test for a lack of air:

1.Turn on every appliance and fan that exhausts air from the utility room and/or house. Make sure all windows and doors are closed, as well as chimney dampers.

2.Open a hot water faucet so that the main burner will ignite

3.Remove the outer door of the water heater – not the inner door

4.Monitor the flame characteristics for several minutes

If the flame begins to “yellow” open a door or window, to the outdoors, to see if additional air corrects this back to blue. If it does, the room needs more air supply. Perform draft test at draft hood of water heater with match or smoke source to verify.

 

Testing with

 

 

Gas

 

Manifold

Pressure

Pilot Gas

Gauge

Gas Pressure

 

Pressure

Test

 

Test

Gas pressure checks are done with flowing gas.

Supply gas pressure checks are taken ahead of the gas control and as close to the heater as possible.

Pilot gas pressure checks are taken by using fitting adapters to tap into the pilot gas tubing. Manifold (main burner) gas pressure is measured using the Allen wrench tap on the bottom of the control valve.

Desired gas pressures will be noted on the gas valve label.

If …

… then

supply gas pressure is under desired pressure

• increase supply gas pressure regulator

setting

 

setting and,

 

• increase supply gas piping size.

supply gas pressure is over desired pressure

•

add gas pressure regulator.

 

•

reduce setting on existing regulator.

pilot gas pressure is more than +/- .3 inch

replace the control valve.

W.C. from desired

 

 

manifold gas pressure is more than +/- .3 inch

replace the control valve.

W.C. from desired

 

 

Additional considerations when pilot or main burner flames are too large or too small:

•Incorrect orifice

•Dirt in orifice or gas supply tubing

A.O. Smith Water Products Company

11

Training Department

©2002

Ashland City, Tennessee

 

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A.O. Smith TC-049-R2 manual If … … then, Manifold, Pilot Gas, Gas Pressure, Test
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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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