Manuals / Bradford-White Corp / Household Appliance / Water Heater

Bradford-White Corp UTW465S60FRN, UTW450S60FRN service manual Service Manual, TTW Eco-Defender

Models: U1TW40SFRN U2TW65TFRN UTW450S60FRN U1TW60TFRN UTW465S60FRN U1TW50SFRN U2TW50T*FRN

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TTW® Eco-Defender

Residential Ultra Low NOx Gas Water Heaters

SERVICE

MANUAL

Troubleshooting Guide

and Instructions for Service

(To be performed ONLY by qualified service providers)

Models Covered by This Manual:

U1TW40S*FRN

U1TW50S*FRN

U1TW60T*FRN

U2TW50T*FRN

U2TW65T*FRN

UTW450S60FR*N

UTW465S60FR*N

(*) Denotes Warranty Years

Manual 238-48385-00A

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Bradford-White Corp UTW465S60FR*N service manual Service Manual, TTW Eco-Defender, Models Covered by This Manual

Contents

Troubleshooting Guide and Instructions for Service SERVICE MANUALTo be performed ONLY by qualified service providers UTW450S60FR*N UTW465S60FR*N Denotes Warranty YearsPage SectionTable of Contents DANGER FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED 3/4” X 3/4” TEM Introduction The Bradford White ECO-DEFENDER Safety SystemIntroduction How the Safety System Works How to Use this ManualHow to Use this Manual Tools Required for Service Tools RequiredPage SpecificationsSpecifications Vent TablesPage 40 Gallon-40,000 BTU/hr 50 Gallon-40,000 BTU/hrVent Tables SpecificationsPage 48 Gallon-60,000 BTU/hr 65 Gallon-60,000 BTU/hrControl Timings Wiring DiagramSpecifications PageSequence of Operation Power Up SequenceNormal Heating Sequence Abnormal Operation Normal Heating Sequence cont’dSequence of Operation Sequence of Operation Abnormal Operation cont’dSequence of Operation 4. Trial for Ignition FaultAbnormal Operation cont’d Sequence of Operation 5. Flame Sensing FaultAbnormal Operation cont’d Service Procedure TroubleshootingPage Probable CauseService Procedure TroubleshootingPage LED StatusService Procedure TroubleshootingPage LED StatusBurner Cleaning Procedure Burner MaintenanceBurner Inspection Burner Maintenance Burner Cleaning Procedure cont’dPilot Inspection, Testing and Replacement Pilot MaintenanceBurner Cleaning Procedure cont’d Pilot Maintenance Pilot Inspection, Testing and Replacement cont’dPage Pressure Switch Testing Pressure Switch TestingPilot Inspection, Testing and Replacement cont’d Pressure Switch Testing Pressure Switch Testing cont’dPage Pressure Switch Replacement Pressure Switch ReplacementBlower Testing Blower TestingBlower Testing cont’d Blower TestingPage Blower Installation Blower ReplacementBlower Removal Blower Installation cont’d Blower Temperature Switch TestingBlower Temperature Switch Testing Blower Temperature Switch Testing Blower Temperature Switch Testing cont’dSwitch Setting PageBlower Temperature Switch Replacement Blower Temperature Switch ReplacementThermal Well Testing Thermal Well TestingDetermine Tank Temperature Thermal Well Testing cont’dDetermine Water Temperature Inside Tank Sensor Resistance at Various Temperatures Component DisassemblyGas Control & Thermal Well Removal From Water Heater PageGas 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 Gas Control Assembly to the Thermal Well cont’dFlammable Vapor Sensor Testing Flammable Vapor Sensor Testing115 VAC Circuit Trace Gas Control Assembly to the Thermal Well cont’dPage 115 VAC Circuit TraceSafety Circuit Voltage Trace Safety Circuit Voltage TracePage Blower Removal Remove the Blower to Gain Access to the Flue BaffleDip Tube Inspection and Replacement Remove the Blower to Gain Access to the Flue Baffle cont’dDip Tube Inspection Anode Inspection Anode Inspection and ReplacementInner 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 CleaningCommon Terms Common TermsPage Parts ListPart Name and Description Email parts@bradfordwhite.com techserv@bradfordwhite.com