Bradford-White Corp SX), D4504S*F(BN, D4403S*F(BN service manual Wiring Diagram

Page 8

Specifications

Control Timings

 

 

Ignition State

Timing

 

 

Adjust Damper Position and Verify (Open Posi-

15 seconds

tion)

 

 

 

Trial for Ignition

90 seconds

 

 

Flame Stabilization Period

3 seconds

 

 

Re-adjust Damper Position and Verify

15 seconds

 

 

Flame Failure Response Time

1.5 seconds (2 second maximum; 1 second mini-

mum)

 

 

 

Adjust Damper Position and Verify (Closed Po-

15 seconds

sition)

 

 

 

Damper Blade Position Fault (failed open/close)

Retry after 2 minutes

 

 

Soft Lockout

Retry after 5 minutes

 

 

ECO Limit Lockout

Indefinite (See page 11 to reset)

 

 

Verify Resistive Delay

Retry after 2 minutes (repeats 5 times)

 

 

Simulated Resistive Load Lockout

Indefinite (cycle power to reset)

 

 

Hardware Error Lockout

Indefinite (self clears if fault clears for at least 15

seconds)

 

 

 

Wiring Diagram

Page 8

8

Page 7 Page 9
Image 8
Page 7 Page 9
Contents Service Manual Table of Contents Page Page Bradford White Defender Safety System How the Safety System WorksIntroduction IntroductionHow to Use this Manual How to Use this ManualSpecifications Wiring Diagram Power Up Sequence Damper Powered OpenSequence of Operation Normal Heating SequenceNormal Heating Sequence cont’d Trial for Ignition Fault Abnormal Operation cont’d Temperature Sensor FaultDamper Safety Circuit Fault Abnormal Operation cont’d Flame Sensing Fault Troubleshooting Probable Cause Service ProcedureLED Status Control Status Probable Cause Service Procedure Burner Inspection Burner MaintenanceBurner Cleaning Procedure Right side inner door Main burner Orifice Pilot Inspection, Testing and Replacement Pilot MaintenanceBurner Cleaning Procedure cont’d Pilot Inspection, Testing and Replacement cont’d Damper Replacement Damper Removal & InstallationDamper Removal & Installation cont’d Thermal Well Testing Thermal Well TestingDetermine Water Temperature Inside Tank Determine Tank TemperatureThermal Well Testing cont’d Gas Control & Thermal Well Removal From Water Heater Component DisassemblySensor Resistance at Various Temperatures Gas Control Removal From Thermal Well Gas Control RemovalGas Control & Thermal Well Removal From Water Heater cont’d Gas Control Removal From Thermal Well cont’d Gas Control AssemblyGas Control Assembly to the Thermal Well Gas Control Assembly to the Thermal Well cont’d VAC Circuit Trace Flammable Vapor Sensor TestingFlammable Vapor Sensor Testing Dip Tube Inspection and Replacement Dip Tube InspectionAnode Inspection and Replacement Anode InspectionRemove the Damper to Gain Access to the Flue Baffle Damper RemovalRemove the Damper to Gain Access to the Flue Baffle cont’d Inner Door Removal Procedure Inner Door RemovalInner Door Gasket Replacement Procedure Inner Door Gasket ReplacementInner Door Removal Procedure cont’d Inner Door Installation Inner Door Installation with GasketDamper Relay Installation Arrestor CleaningScreenLok Flame Arrestor Cleaning Procedure Damper Relay Installation Damper Relay Installation cont’dConnect the other ends of the relay harness, as shown Common Terms Common TermsParts List Part Name and DescriptionParts@bradfordwhite.com Techserv@bradfordwhite.com

SX), D4504S*F(BN, D4403S*F(BN specifications

Bradford-White Corp has long been a pioneering name in the water heating industry, and their D4403S*F(BN, D4504S*F(BN, and SX models represent the company’s commitment to delivering high-quality, efficient solutions for residential and commercial applications. These water heaters are designed with various user needs in mind, ensuring that homeowners and businesses can enjoy a reliable hot water supply whenever needed.

One of the core features of these models is their advanced water heating technology. Utilizing power venting systems, these units ensure efficient heat transfer while minimizing heat loss. This technology promotes energy efficiency and helps users save on their energy bills. The power vent system also allows for flexible installation options, accommodating different types of venting configurations, which is especially useful in homes with unique designs or limited space.

The Bradford-White D4403S*F(BN and D4504S*F(BN models are equipped with their state-of-the-art Hydrojet Total Performance System. This feature not only enhances the heater's overall performance but also reduces sediment buildup within the tank, which can significantly extend the unit's lifespan and maintain efficiency over time. Moreover, the patented Vitraglas® lining protects the inner tank from corrosion, further prolonging the life of the appliance.

Safety is a paramount consideration in Bradford-White's design philosophy. Each model includes a robust Flammable Vapor Ignition Resistance (FVIR) system, which helps prevent the ignition of flammable vapors that may be present in the vicinity of the water heater. This feature meets stringent safety standards and provides peace of mind to users.

In terms of energy specifications, both the D4403S*F(BN and D4504S*F(BN models are designed to meet or exceed efficiency standards, contributing to lower energy consumption and environmental impact. The SX model is particularly notable for its user-friendly digital display and controls, allowing for easy temperature adjustments and efficient operation monitoring.

In conclusion, Bradford-White Corp's D4403S*F(BN, D4504S*F(BN, and SX models are a testament to the company’s dedication to quality, safety, and efficiency in water heating technology. With their innovative features, user-friendly design, and long-lasting durability, these water heaters are well-suited to meet the ever-evolving demands of modern households and commercial settings alike. As homeowners and businesses continue seeking reliable hot water solutions, Bradford-White stands out as a trusted choice in the industry.
Top Page Image Contents