Bradford-White Corp 900kW, 9kW, Commercial Electric Water Heaters service manual Time Clock Optional

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electrical input of the water heater in the summer months when ground water temperatures are warmer and full electrical input from the immersion heating elements is not required. The water heater may be restored to full input by moving the switches to the “ON” position.

TIME CLOCK (Optional)

FIG. 27 Time Clock

The water heater may be provided with an optional time clock. The time clock will allow the water heater to be turned on and off with a pre-set schedule. The time clock may be specified with a 24 hour scheduling period or with a 7 day scheduling period. By the adjustment of the setpoints on the time clock, the water heater may be turned off when hot water is not needed or in periods when the building may not be occupied. The time clock allows the water heater to automatically cycle on in advance of the time when hot water may be needed. This will insure that hot water is always available yet save energy when there are scheduled periods when there will be no requirement for hot water. This feature is especially useful for schools and building that are occupied on a fixed schedule. As an additional feature, time clocks may be furnished with a spring wound carry-over function to insure that a switching schedule is maintained in periods where there may be power interruptions. The time clock works by making and breaking the 120 VAC control circuit to the contactor coils to shut down operation of the heating elements in the desired time periods.

PILOT LIGHTS (Optional)

The water heater may be provided with optional pilot lights to provide an external indicator for each contactor or stage of heating elements that is energized. Each pilot light is wired in parallel with the 120 VAC control circuit feed to the contactor coil(s). The pilot will be turned on as the contactor coil(s) is energized by the temperature controls.

SHUNT TRIP DISCONNECT (Optional)

Shunt trip disconnect provides a power disconnect upon a control sensed malfunction via a circuit breaker installed in the main power supply to the water heater. The circuit breaker is shipped as a separate item that must be field installed. The water heater 120 VAC control circuit provides a feed to the circuit breaker that will shut down main power on either a low water level condition (if equipped) or high water temperature. Once the water heater is installed and all power is connected, the toggle switch that arms the shunt trip must be placed in the on position to provide the shunt trip function on the desired control sensed malfunction.

ALARM BELL (Optional)

FIG. 28 Alarm Bell

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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 ProtectionJacket Assembly Never turn on the electricStandard Equipment Terminal Block Optional Equipment Components and ControlsFuse and Flue Blocks ContactorsControl Circuit Transformer Water Temperature Settings Temperature RegulationImmersion Thermostats Hotter water increasesTemperature Adjustment Maximum temperatureElectronic Temperature Control Sequencer Operating Ambient Temperature -30 to 125 F SpecificationsOperating Humidity 5 95% RH Select and Enter Keys simultaneouslySetup of the Temperature Controller DisplayProgramming 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 START-UP Procedure Left in the open position when the water heater is in useFilling 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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