Bradford-White Corp U4TW60T*FRN, U4TW50T*FRN, U4TW40T*FRN Inner Door Gasket Replacement

Page 47

Inner Door Gasket Replacement

Step 6. Remove the connectors attached to the re- settable thermal switch on the manifold mount.

Flammable vapor

Inner Door Removal Procedure (cont’d)

sensor clip

Step 7. Remove the flammable vapor sensor from the clip by pushing down on the tab to open the clip.

Flammable vapor

sensor

Step 8. Inspect both inner doors for any of the following imperfections: tears, missing material, cracks, dirt or debris, lack of adhesion to the inner door, material left

WARNING

If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury, or death.

on combustion chamber, or any other imperfections that will inhibit a proper seal.

If any of the imperfections above are present,

door gasket following the Inner Door Gasket Gasket overlap must be

replace the inner

Replacement Procedure. If not, replacement of the inner door gaskets is not necessary.

as shown ± 1/32

Enlarged

view of

flange

Inner Door Gasket Replacement Procedure

Step 1. Completely remove all gasket and adhesive residue from the right and left side inner doors, as needed.

area

Recommended pattern for RTV sealant Step 2.

U s i n g

 

RTV

sealant,

 

apply a 1/8”

 

bead to secure

 

Gasket overlap must be

 

Slice gasket here to slide over burner venturi t h e

as shown ± 1/32

Expanded view

Page 47

47

Image 47
Contents Service Manual Table of Contents Page Page Introduction Bradford White ECO-DEFENDER Safety SystemHow the Safety System Works How to Use this ManualTools Required Tools Required for ServiceSpecifications Gallon Vent TablesSpecifications Control Timings Wiring DiagramNormal Heating Sequence Power Up SequenceSequence of Operation Abnormal Operation Normal Heating Sequence cont’dAbnormal Operation cont’d Sequence of Operation Sequence of Operation LED Status Control Status Probable Cause Service Procedure TroubleshootingTroubleshooting Troubleshooting Burner Inspection Burner MaintenanceBurner Cleaning Procedure Burner Cleaning Procedure cont’d Pilot Inspection, Testing and Replacement Pilot MaintenancePilot Inspection, Testing and Replacement cont’d Page Pressure Switch Testing Pressure Switch TestingPressure Switch Testing cont’d Pressure Switch Replacement Pressure Switch ReplacementBlower Testing Blower TestingPage Blower Removal Blower ReplacementBlower Installation Blower Temperature Switch Testing Blower Temperature Switch TestingBlower Installation cont’d Switch Setting Blower Temperature Switch Testing cont’dBlower Temperature Switch Replacement Blower Temperature Switch ReplacementThermal 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 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 Flammable Vapor Sensor Testing Flammable Vapor Sensor TestingVAC Circuit Trace Safety Circuit Voltage Trace Safety Circuit Voltage TraceBlower Removal Remove the Blower to Gain Access to the Flue BaffleDip Tube Inspection Remove the Blower to Gain Access to the Flue Baffle cont’dDip Tube Inspection and Replacement Anode Inspection Anode Inspection and ReplacementInner Door Removal Inner Door Removal ProcedureInner Door Gasket Replacement Procedure Inner Door Gasket ReplacementInner Door Removal Procedure cont’d Inner Door Installation with Gasket Inner Door InstallationScreenLok Flame Arrestor Cleaning Procedure Arrestor CleaningCommon Terms Common TermsPart Name and Description Parts ListParts@bradfordwhite.com Techserv@bradfordwhite.com