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

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Specifications

 

 

 

 

 

 

 

 

 

Power Supply

Dedicated 120VAC, 60 Hz, 15A

 

 

 

 

 

 

Gas Supply Pipe

Minimum 1/2” NPT (Schedule 40 black iron pipe

 

 

recommended)

 

 

 

 

 

 

 

 

 

Approved Gas Type

Natural or Propane; unit must match gas type supplied

 

 

 

 

 

 

Gas Pressure

5” w.c. minimum for Natural Gas; 11” w.c. for Propane;

 

 

14” w.c. maximum for Natural Gas / Propane

 

 

 

 

 

 

 

 

 

Approved Vent Materials

Single or Double Wall Metal Vent Pipe

 

 

 

 

 

 

Minimum Clearance for

18” from top; 24” from front; 4” from sides and rear

 

 

Servicing

 

 

 

 

 

 

 

 

 

Water Supply Pressure

150 psi maximum allowable working pressure; check local

 

 

codes for supply pressure

 

 

 

 

 

 

 

 

 

ECO Limit

188°F (87°C)

 

 

 

 

 

 

Temperature Setpoint Range

60°F (16°C) to 160°F (71°C); approximate temperatures

 

 

 

 

 

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Image 7 Contents
Service Manual Table of Contents Page Page Introduction Bradford White Defender Safety SystemHow the Safety System Works IntroductionHow to Use this Manual How to Use this ManualSpecifications Wiring Diagram Normal Heating Sequence Power Up SequenceDamper Powered Open Sequence of OperationNormal Heating Sequence cont’d Damper Safety Circuit Fault Abnormal Operation cont’d Temperature Sensor FaultTrial for Ignition Fault Abnormal Operation cont’d Flame Sensing Fault Probable Cause Service Procedure TroubleshootingLED Status Control Status Probable Cause Service Procedure Burner Cleaning Procedure Burner MaintenanceBurner Inspection Right side inner door Main burner Orifice Burner Cleaning Procedure cont’d Pilot MaintenancePilot Inspection, Testing and Replacement Pilot Inspection, Testing and Replacement cont’d Damper Removal & Installation Damper ReplacementDamper Removal & Installation cont’d Thermal Well Testing Thermal Well TestingThermal Well Testing cont’d Determine Tank TemperatureDetermine Water Temperature Inside Tank Sensor Resistance at Various Temperatures Component DisassemblyGas Control & Thermal Well Removal From Water Heater Gas Control & Thermal Well Removal From Water Heater cont’d Gas Control RemovalGas Control Removal From Thermal Well Gas Control Assembly to the Thermal Well Gas Control AssemblyGas Control Removal From Thermal Well cont’d Gas Control Assembly to the Thermal Well cont’d Flammable Vapor Sensor Testing Flammable Vapor Sensor TestingVAC Circuit Trace Dip Tube Inspection Dip Tube Inspection and ReplacementAnode Inspection Anode Inspection and ReplacementDamper Removal Remove the Damper to Gain Access to the Flue BaffleRemove the Damper to Gain Access to the Flue Baffle cont’d Inner Door Removal Inner Door Removal ProcedureInner Door Removal Procedure cont’d Inner Door Gasket ReplacementInner Door Gasket Replacement Procedure Inner Door Installation with Gasket Inner Door InstallationScreenLok Flame Arrestor Cleaning Procedure Arrestor CleaningDamper Relay Installation Damper Relay Installation cont’d Damper Relay InstallationConnect the other ends of the relay harness, as shown Common Terms Common TermsPart Name and Description Parts ListParts@bradfordwhite.com Techserv@bradfordwhite.com