Bradford-White Corp 9kW, 900kW Water Chemistry, Flushing the Storage Tank, Sediment Removal

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should be metallic pipe or a high temperature plastic pipe (CPVC, etc.) to insure that hot water flow will not damage the discharge piping from the relief valve.

Water heater maintenance includes periodic tank flushing, cleaning and removal of lime scale from the heating elements. Where used, the water heating system circulating pump should be oiled.

CAUTION: Avoid contact with hot discharge water. Insure that no one is in front of or around the relief valve discharge line. Make sure that the extremely hot water manually discharged from the relief valve will not cause bodily injury or property damage.

WATER CHEMISTRY

In hard water areas, water treatment should be used to reduce the introduction of minerals to the system. Minerals in the water can collect in the storage tank and on the immersion heating elements causing noise on operation. Excessive build up of minerals on the surface of the heating elements can reduce the service life of the elements and lead to a non-warrantable failure.

Proper operation of this electric water heater is based on heating potable water with a hardness of 5 to 25 grains per gallon and a total dissolved solids not exceeding 350 PPM. Consult the manufacturer when heating potable water exceeding these specifications. Heating of high hardness and/or high total dissolved solids water may require frequent cleaning of the storage tank and heating elements to achieve proper operation. The higher the level of dissolved solids or water hardness, the faster the dissolved minerals in the water will precipitate out and form scale deposits on the heating elements and in the storage tank. The level of scale formation is also accelerated as stored water temperature increases. Water with a hardness of less than 5 grains per gallon will usually have a low pH which can be aggressive and corrosive causing non-warrantable damage to the storage tank, heating elements and associated piping. Corrosion due to water chemistry generally shows up first in the hot water system because heated water increases the rate of corrosive chemical reactions.

FLUSHING THE STORAGE TANK

1.Turn off main power at the electrical disconnect switch.

2.Open the drain valve. Allow water to flow until it runs clean.

3.Close the drain valve when finished flushing.

4.Turn on the electrical disconnect switch (after filling).

SEDIMENT REMOVAL

Water born impurities consist of dissolved minerals which precipitate out of the heated water and fine particles of soil and sand which settle out and form a layer of sediment on the bottom of the tank. In time, if not removed, the level of sediment might reach the heating elements.

For convenience, sediment removal and element lime scale removal should be performed at the same time as follows:

Sediment and Lime Scale Removal

Sediment and lime scale accumulation on the heating elements is a normal condition common to all immersion type elements. Factors which affect the amount of this formation are:

1.Amount of hot water used. As the volume of water increases, more scale results.

2.Water temperature. As the temperature of the water is increased, more scale is deposited on the elements.

3.Characteristics of water supply. Regardless of water treatment, the elements should be examined regularly.

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Contents CHP-I&S-01 WarrantySpecial Instructions To Owner Checking EquipmentContents Front View Vertical Round Models Owner Warning Installation Procedure Location of UnitCodes ApprovalsPage Table a Clearances from Combustible Construction Clearances from Combustible ConstructionWater Connections MountingRelief Valve Storage TankThermal Expansion of Water Do not plug or cap the relief valveElectrical Connections Cathodic ProtectionNever turn on the electric Jacket AssemblyStandard Equipment Terminal Block Optional Equipment Components and ControlsContactors Fuse and Flue BlocksControl Circuit Transformer Water Temperature Settings Temperature RegulationImmersion Thermostats Hotter water increasesMaximum temperature Temperature AdjustmentElectronic Temperature Control Sequencer Operating Ambient Temperature -30 to 125 F SpecificationsOperating Humidity 5 95% RH Select and Enter Keys simultaneouslyDisplay Setup of the Temperature ControllerProgramming Worksheet Programming When power is initiallyHigh Water Temperature Limit Control Immersion Heating Element Disconnect the main powerHigh Water Pressure Switch LOW Water Pressure SwitchTime Clock Optional Left in the open position when the water heater is in use START-UP ProcedureFilling the Water Heater Initial START-UP Checks START-UPMaintenance Shutdown ProcedureTemperature and Pressure Relief Valve Operation Draining the Water HeaterFlushing the Storage Tank Water ChemistrySediment Removal Sediment and Lime Scale RemovalGaskets are available from your distributor Trouble Shooting If YOU Cannot Identify or Correct the Source Malfunction

9kW, 900kW, Commercial Electric Water Heaters specifications

Bradford-White Corporation has established itself as a leader in the water heating industry, providing a diverse range of innovative and efficient water heating solutions. Among its prominent offerings are the 900kW and 9kW Commercial Electric Water Heaters. These models have been designed for a variety of commercial applications, ensuring reliability, performance, and energy efficiency.

The 900kW Commercial Electric Water Heater is specifically engineered for large-scale applications that require significant hot water outputs. This powerhouse can effectively support high-demand environments such as hotels, restaurants, and industrial facilities. One of its standout features is its high-efficiency design, which maximizes hot water production while minimizing operational costs. The heater employs advanced technology to increase thermal efficiency, which in turn reduces energy consumption and lowers utility bills.

This model also features a robust heating element configuration that ensures rapid recovery rates. With multiple heating elements strategically placed within the tank, the 900kW unit can maintain consistent water temperatures even during peak usage hours. Additionally, it is equipped with advanced controls that facilitate precise temperature management, further enhancing user convenience and system performance.

On the other side, the 9kW Commercial Electric Water Heater is ideal for smaller businesses or applications where space and hot water demand are more constrained. This model is compact yet powerful, capable of efficiently delivering hot water for various tasks such as handwashing, cleaning, and food preparation. Its compact design allows for flexible installation options, making it suitable for tight spaces without compromising performance.

Both models incorporate corrosion-resistant tank materials and durable insulation to ensure longevity and reliable operation over time. The integrated safety features, including high-temperature limit switches and automatic shut-off mechanisms, provide users with peace of mind regarding operational safety.

Furthermore, Bradford-White prioritizes sustainability in its product lines. Both the 900kW and 9kW Commercial Electric Water Heaters comply with stringent efficiency regulations, making them eco-friendly options for businesses looking to reduce their carbon footprint.

In summary, Bradford-White’s 900kW and 9kW Commercial Electric Water Heaters represent the perfect fusion of performance, efficiency, and reliability, catering to diverse commercial needs while promoting sustainability and cost-effectiveness in water heating solutions.
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