Bradford-White Corp 900kW, 9kW Fuse and Flue Blocks, Contactors, Control Circuit Transformer

Page 12

FUSE AND FLUE BLOCKS

FIG. 14

Fuse Block with Power Circuit Fuses

Each internal power circuit is fused for safety. Each power circuit to an immersion element is fused at a maximum of 48 amps. Power circuits may be fused at lower current levels as needed to balance current on three phase units. The power circuit fuses are held by a spring loaded fuse block rated for the voltage specified to operate the water heater.

The control circuit is also fused on both the primary and secondary sides of the control circuit transformer.

CONTACTORS

FIG. 15 Magnetic Contactor

The power to the immersion electric heating elements is switched by a definite purpose magnetic contactor. The contactor is supplied with 120 VAC from the control circuit when the immersion thermostat senses a drop in stored water temperature below the desired set point. A magnetic coil in the contactor is energized to complete the electrical circuit supplying power to the immersion heating elements. When the thermostat is satisfied, the contactor coil is de- energized and power to the heating elements is turned off.

CONTROL CIRCUIT TRANSFORMER

FIG. 16 Control Circuit Transformer

A transformer is used to reduce the line voltage to 120 VAC for internal control operation. The transformer is fused on both the primary and secondary side. The common side of the secondary control circuit is grounded. The VA rating of the control circuit transformer is based on the load of the various components in the water heater control circuit.

WARNING:

HAZARD OF ELECTRICAL SHOCK – Before opening the electrical access panel to adjust the thermostat or servicing the water heater, 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.

12

Page 11 Page 13
Image 12
Page 11 Page 13
Contents Warranty CHP-I&S-01Special Instructions To Owner Checking EquipmentContents Front View Vertical Round Models Installation Procedure Location of Unit Owner WarningCodes ApprovalsPage Clearances from Combustible Construction Table a Clearances from Combustible ConstructionMounting Water ConnectionsStorage Tank Relief ValveThermal Expansion of Water Do not plug or cap the relief valveCathodic Protection Electrical ConnectionsJacket Assembly Never turn on the electricStandard Equipment Optional Equipment Components and Controls Terminal BlockFuse and Flue Blocks ContactorsControl Circuit Transformer Temperature Regulation Water Temperature SettingsImmersion Thermostats Hotter water increasesTemperature Adjustment Maximum temperatureElectronic Temperature Control Sequencer Specifications Operating Ambient Temperature -30 to 125 FOperating Humidity 5 95% RH Select and Enter Keys simultaneouslySetup of the Temperature Controller DisplayProgramming Worksheet When power is initially ProgrammingHigh Water Temperature Limit Control Disconnect the main power Immersion Heating ElementLOW Water Pressure Switch High Water Pressure SwitchTime Clock Optional START-UP Procedure Left in the open position when the water heater is in useFilling the Water Heater START-UP Initial START-UP ChecksShutdown Procedure MaintenanceTemperature and Pressure Relief Valve Operation Draining the Water HeaterWater Chemistry Flushing the Storage TankSediment 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.
Top Page Image Contents