Bradford-White Corp PE4503*F(BN,SX) Flammable Vapor Sensor Testing, VAC Circuit Trace

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Flammable Vapor Sensor Testing

Flammable Vapor Sensor Testing (cont’d)

Step 3. Using a multi-meter set to the ohms setting, measure the resistance of the flammable vapor sensor and resettable thermal switch. The resistance must be between 3,000 and 48,000 ohms. If the resistance is out of this range, verify that the resettable thermal switch has not been tripped. If it hasn’t, replace the flammable vapor sensor.

Flammable vapor

sensor harness

120 VAC Circuit Trace

Note: The 120 VAC Circuit Trace section is in addition to the Defender Atmospheric service manual, p/n 238-44943-00.

Step 1. Verify 120VAC and proper polarity are at the wall outlet.

Step 2. With the water heater plugged in and the gas control power switch in the “ON” position, verify LED status.

Relay Replacement

Note: The Relay Replacement section is in addition to the Defender Atmospheric service manual, p/n 238-44943-00.

Step 1. Move the gas control power switch to the “OFF” position.

Gas control power

switch

Step 2. Unplug the water heater and Accessory Module from the wall outlet.

Water heater power cord and

Accessory Module transformer

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Contents Service Manual Table of Contents Page Page Bradford White Defender Safety System IntroductionHow to Use this Manual How to Use this ManualSpecifications SpecificationsControl Timings Power Up Sequence Sequence of OperationNormal Heating Sequence Relay EnergizedNormal Heating Sequence cont’d Safety Circuit Fault Abnormal Operation cont’d Temperature Sensor FaultTrial for Ignition Fault Abnormal Operation cont’d Flame Sensing Fault Troubleshooting LED Status Control Status Probable Cause Service ProcedureTroubleshooting Gas Valve / Control Model LED Status Accessory Module Probable Cause Burner Cleaning Procedure Burner MaintenanceBurner Inspection Unscrew the burner from the main burner orifice Burner Cleaning Procedure cont’d Pilot Inspection, Testing, and ReplacementPilot Maintenance Pilot Inspection, Testing, and Replacement cont’dThermal Well Testing Thermal Well Testing cont’d Thermal Well TestingDetermine Water Temperature Inside Tank Determine Water Temperature Inside Tank cont’d Determine Tank TemperatureSensor Resistance at Various Temperatures Component Disassembly Gas Control & Thermal Well Removal From Water HeaterGas Control Removal Gas Control Removal From Thermal WellGas Control Assembly to the Thermal Well Gas Control Removal From Thermal Well cont’dGas Control Assembly to the Thermal Well cont’d Gas Control AssemblyFlammable Vapor Sensor Testing Flammable Vapor Sensor Testing Flammable Vapor Sensor Testing cont’dRelay Replacement VAC Circuit TraceRelay Replacement Relay Replacement cont’dCommon Terms Common TermsParts List Part Name and DescriptionParts@bradfordwhite.com Techserv@bradfordwhite.com

PE4403S*F(BN,SX), PE440T*F(BN,SX), PE4503*F(BN,SX), PE2XR504T*F(BN,SX) specifications

Bradford-White Corporation is a renowned manufacturer of water heating and storage products, well-regarded for its commitment to quality and innovation. Among its diverse product lineup, the PE2XR504T*F(BN,SX), PE4503*F(BN,SX), PE440T*F(BN,SX), and PE4403S*F(BN,SX) models stand out for their technology, efficiency, and performance. These commercial electric water heaters are designed for demanding applications, making them ideal for various settings, including restaurants, hotels, and industrial facilities.

One of the most notable features across these models is the use of advanced heating elements, which are engineered to provide rapid recovery and consistent hot water temperatures. This capability ensures that businesses can rely on a continuous supply of hot water, particularly during peak demand periods. The tanks are constructed with high-quality materials that guarantee durability and longevity, reducing the need for frequent replacements.

Another key feature is the digital temperature control system, which allows users to easily set and maintain the desired water temperature with precision. This technology not only enhances user convenience but also contributes to energy efficiency, allowing businesses to operate within sustainable parameters while minimizing energy costs. Additionally, certain models are equipped with Bradford-White’s patented Hydrojet® Total Performance System, which promotes superior tank cleaning and reduces sediment buildup, thereby improving efficiency and prolonging the life of the heater.

Safety is paramount in the design of these units. The incorporation of advanced safety features, including a self-resetting thermal cutoff and a high limit switch, helps protect against overheating. Furthermore, these models are built with a robust insulation system, which reduces heat loss and improves overall energy efficiency.

In terms of versatility, the PE2XR504T*F(BN,SX), PE4503*F(BN,SX), PE440T*F(BN,SX), and PE4403S*F(BN,SX) can be easily integrated into existing plumbing systems. They are available in various capacities and configurations, catering to a wide range of commercial needs. With their combination of cutting-edge technology, reliability, and safety features, these Bradford-White models are an excellent investment for any commercial establishment seeking efficient and dependable hot water solutions.
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