Bradford-White Corp PE4403S*F(BN,SX), PE4503*F(BN,SX), PE440T*F(BN,SX) Table of Contents

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Table of Contents

Section

Page

Introduction ______________________________________________5

How to Use this Manual _____________________________________6

Tools Required for Service ___________________________________6

Specifications _____________________________________________7

Sequence of Operation______________________________________9

Power Up Sequence Normal Heating Sequence Abnormal Operation

Troubleshooting __________________________________________ 13

Burner Maintenance _______________________________________ 17

Burner Inspection

Burner Cleaning Procedure

Pilot Maintenance _________________________________________ 19

Pilot Inspection, Testing and Replacement

Thermal Well Testing ______________________________________ 21

Determine Water Temperature Inside Tank_____________________ 22

Component Disassembly ___________________________________ 24

Gas Control Removal ______________________________________ 25

Gas Control Assembly _____________________________________ 26

Flammable Vapor Sensor Testing_____________________________ 27

120 VAC Circuit Trace _____________________________________ 28

Relay Replacement________________________________________ 28

Common Terms __________________________________________ 30

Notes __________________________________________________ 30

Parts List _______________________________________________ 31

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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 Normal Heating Sequence Power Up SequenceSequence of Operation Relay EnergizedNormal Heating Sequence cont’d Trial for Ignition Fault Abnormal Operation cont’d Temperature Sensor FaultSafety Circuit 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 Inspection Burner MaintenanceBurner Cleaning Procedure 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 Determine Water Temperature Inside Tank Thermal Well TestingThermal Well Testing cont’d Sensor Resistance at Various Temperatures Determine Tank TemperatureDetermine Water Temperature Inside Tank cont’d 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’dFlammable Vapor Sensor Testing Gas Control AssemblyGas Control Assembly to the Thermal Well cont’d Relay Replacement Flammable Vapor Sensor TestingFlammable Vapor Sensor Testing cont’d 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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