Bradford-White Corp 9kW, 900kW service manual Disconnect the main power, Immersion Heating Element

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reset multiple times. The source of the problem must be found and corrected to insure proper operation. The limit control is covered with an insulation blanket which must be removed to push the red reset button. The blanket of insulation must be replaced before the power is turned on and the water heater is returned to service.

CAUTION:

Disconnect the main power

 

 

to the heater before opening the element access panel to reset the high limit control.

NOTE: The high limit control will not reset until the water temperature has dropped below the set point of the high limit.

IMMERSION HEATING ELEMENT

FIG. 22

Immersion Heating Element

WARNING:

HAZARD OF ELECTRICAL SHOCK – Before opening the access panel to remove or service the immersion heating elements, make sure the electrical supply to the water heater is turned “OFF”. Failure to do this could result in death, serious bodily injury or property damage.

The heating input to this commercial electric water heater is provide by low watt density immersion heating elements. The heating elements are constructed from an incoloy sheath with a tin plate on the exterior surface. Three

element blades are mounted on a single hex-head screw-in mounting flange. The element flange mounts into a 1 1/2” NPT threaded connection welded to the storage tank. The hex-head screw- in mounting flange seals to the tank with an “O” ring gasket at the base of the threaded portion of the flange. The tank flange has a matching recess for the “O” ring gasket to insure a proper water tight seal. . The “O” ring element gasket must be replaced with a new gasket when an element is removed for inspection, cleaning or replacement.

SAFETY DOOR INTERLOCK (Optional)

FIG. 23 Safety Door Interlock

The optional safety door interlock is an electrically operated locking pawl that is energized when main power to the water heater is turned “ON.” The interlock is mounted to the inside of the electrical control panel door and extends behind a locking flange when energized. Main power may be turned off and the electrical access door may be opened for service.

With the door open, main power may be energized if required to service or troubleshoot the operation of selected components.

DANGER:

HAZARD OF ELECTRICAL SHOCK – Full power is present whenever the cabinet door is opened and main power is turned “ON”, even with the pilot switch(es) turned off.

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Contents Checking Equipment WarrantyCHP-I&S-01 Special Instructions To OwnerContents Front View Vertical Round Models Approvals Installation Procedure Location of UnitOwner Warning CodesPage Table a Clearances from Combustible Construction Clearances from Combustible ConstructionWater Connections MountingDo not plug or cap the relief valve Storage TankRelief Valve Thermal Expansion of WaterElectrical Connections Cathodic ProtectionNever turn on the electric Jacket AssemblyStandard Equipment Terminal Block Optional Equipment Components and ControlsContactors Fuse and Flue BlocksControl Circuit Transformer Hotter water increases Temperature RegulationWater Temperature Settings Immersion ThermostatsMaximum temperature Temperature AdjustmentElectronic Temperature Control Sequencer Select and Enter Keys simultaneously SpecificationsOperating Ambient Temperature -30 to 125 F Operating Humidity 5 95% RHDisplay 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-UPDraining the Water Heater Shutdown ProcedureMaintenance Temperature and Pressure Relief Valve OperationSediment and Lime Scale Removal Water ChemistryFlushing the Storage Tank Sediment 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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