Bradford-White Corp SX), D4504S*F(BN, D4403S*F(BN Damper Removal & Installation cont’d

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Damper Replacement

Damper Removal & Installation (cont’d)

Step 3. Disconnect the vent system from the draft hood that is mounted on top of the damper.

Vent system

Step 4. Remove the draft hood from the damper and retain it for use on the new damper.

Draft hood

Damper

Step 5. Unplug the cord sets from the damper.

Cord sets

Step 6. Remove the two damper mounting screws using a 1/4” nut driver and retain for later use.

1/4” nut driver

Step 7. Remove the damper from the top of the water

heater.Damper

Top of water

heater

Water heater tank flue

Step 8. Clean any debris from the jacket head of the water heater.

Step 9. Set the new damper with in place using the water heater tank flue and the screw holes in the jacket head.

Step 10 Secure the damper in place using the screws from Step 6.

Step 11. Re-install the draft hood from Step 4.

Step 12. Reconnect the vent system to the draft hood.

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Image 20 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