CATHODIC PROTECTION

Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of injury under these conditions, we recommend the hot water faucet be open for several minutes at a sink close to the water heater before you use any electrical appliance which is connected to the hot water system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the hot water begins to flow. There should be no smoking or open flames near the faucet at the time it is open.

ELECTRICAL CONNECTIONS

WARNING: WATER HEATER IS EQUIPPED FOR OPERATION ON ONE

VOLTAGE ONLY. Check the rating plate on the front of the control panel access for the correct voltage and phase. DO NOT use this water heater with any other voltage other than the voltage specified on the rating plate. Failure to use the correct voltage can cause problems that can result in death, serious bodily injury or property damage.

CAUTION: DO NOT CONNECT THE WATER HEATER TO AN IMPROPER SOURCE OF ELECTRICITY!

All installation procedures involving electric power connection should only be performed by a trained, certified electrician.

ELECTRIC

ACCESS

HINGED DOOR

TO ELECTRICAL

COMPARTMENT

FIG. 10 Electric Power Connections – Electrical Control Panel – Round Models

ELECTRIC ACCESS

HINGED DOOR TO

ELECTRIC CONTROL

COMPARTMENT

FIG. 11 Electric Power Connections – Electrical Control Panel – Square Models

The appliance, when installed, must be electrically grounded in accordance with the requirements of the authority having jurisdiction or in the absence of such requirements, with the latest edition of the National Electrical Code, NFPA No. 70. When the appliance is installed in Canada, it must conform to the CAE C22.1, Canadian Electrical Code, Part 1 and/or local Electrical Codes.

1.Use copper conductors only. All wiring between the appliance and field installed devices shall be made with copper wire suitable for at least 75° C (167° F) temperature rating. If the wiring from an old water heater installation was aluminum, replace the old wire with copper wire.

2.The factory internal wiring is attached to a terminal block inside the unit. The branch circuit is connected to the terminal block through an opening provided on the top of the water heater electrical access panel.

3.Line voltage wire exterior to the appliance must be enclosed in approved conduit or approved metal clad cable.

4.To avoid serious damage, DO NOT energize the appliance until the system is full of water. Ensure that all air is removed from the storage tank and piping before beginning

9

Page 9
Image 9
Bradford-White Corp 900kW, 9kW, Commercial Electric Water Heaters service manual Cathodic Protection, Electrical Connections

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.