Parts List | Bradford-White Corp U4TW50T*FRN, U4TW40T*FRN instruction

						Parts List
				2
						40
		9	12	3
		9	12
		10	13			1
			13	4

		11
		11		14
				5		7
						7
	28				6
	27			15
				15
				26		33
				26
				32		34	35
		23		31		34	35
25		23		31
25				20
				20
				21			36
				30			36
				30
	24
	22	19			37
	22			38
	18			38
	18			18
	16
				39
			17
			18
		18
		29
		18				29
						29
			Part Name and Description
	1. Blower Complete		15.	T&P Valve	29.	Burner Assembly
	2. Air Mixing Inlet		16.	Outer Door	30.	Flexible Gas Feedline
	3. Pressure Switch		17.	Right Side Inner Door	31.	Thermal Switch
	4. Blower Temperature Switch		18.	Screw #10-12 x 3/4”	32.	Screw #8-18 x 1/2”
	5. Blower Gasket		19.	Brass Drain Valve	33.	Burner
	6. Blower Power Cord		20.	Flammable Vapor Sensor Clip	34.	Pilot Assembly
	7. Vent Adapter w/ Vent Term.		21.	Flammable Vapor Sensor	35.	Screw #8-18 x 1/2”
	8. Condensate Hose Kit		22.	Flammable Vapor Sensor Harness	36.	Pilot Orifice
	9. Heat Trap Outlet		23.	Thermowell	37.	Manifold Mount
	10. Hot Water Outlet Anode		24.	Gas Control	38.	FVIR Sensor Plate
	11. Flue Baffle		25.	Gas Control Service Tool	39. Orifice
	12. Heat Trap Inlet		26.	3/4” NPT Pipe Plug	40.	Dilution Air Clip
	13. Inlet Dip Tube		27.	ASSE Approved Mixing Valve
	14. Wire Harness		28.	Kit—Heat Trap Insert

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Bradford-White Corp U4TW50T*FRN, U4TW40T*FRN, U4TW60T*FRN service manual Parts List, Part Name and Description

Contents

Service Manual Table of Contents Page Page Introduction Bradford White ECO-DEFENDER Safety System How the Safety System Works How to Use this Manual Tools Required Tools Required for Service Specifications Gallon Vent Tables Specifications Control Timings Wiring Diagram Power Up Sequence Sequence of OperationNormal Heating Sequence Abnormal Operation Normal Heating Sequence cont’d Abnormal Operation cont’d Sequence of Operation Sequence of Operation LED Status Control Status Probable Cause Service Procedure Troubleshooting Troubleshooting Troubleshooting Burner Maintenance Burner Cleaning ProcedureBurner Inspection Burner Cleaning Procedure cont’d Pilot Inspection, Testing and Replacement Pilot Maintenance Pilot Inspection, Testing and Replacement cont’d Page Pressure Switch Testing Pressure Switch Testing Pressure Switch Testing cont’d Pressure Switch Replacement Pressure Switch Replacement Blower Testing Blower TestingPage Blower Replacement Blower InstallationBlower Removal Blower Temperature Switch Testing Blower Installation cont’dBlower Temperature Switch Testing Switch Setting Blower Temperature Switch Testing cont’d Blower Temperature Switch Replacement Blower Temperature Switch Replacement Thermal Well Testing Thermal Well Testing Determine Tank Temperature Thermal Well Testing cont’dDetermine Water Temperature Inside Tank Component Disassembly Sensor Resistance at Various TemperaturesGas Control & Thermal Well Removal From Water Heater Gas Control Removal Gas Control Assembly Gas Control Assembly to the Thermal WellGas Control Removal From Thermal Well cont’d Gas Control Assembly to the Thermal Well cont’d Flammable Vapor Sensor Testing Flammable Vapor Sensor Testing VAC Circuit Trace Safety Circuit Voltage Trace Safety Circuit Voltage Trace Blower Removal Remove the Blower to Gain Access to the Flue Baffle Remove the Blower to Gain Access to the Flue Baffle cont’d Dip Tube Inspection and ReplacementDip Tube Inspection Anode Inspection Anode Inspection and Replacement Inner Door Removal Inner Door Removal Procedure Inner Door Gasket Replacement Inner Door Removal Procedure cont’dInner Door Gasket Replacement Procedure Inner Door Installation with Gasket Inner Door Installation ScreenLok Flame Arrestor Cleaning Procedure Arrestor Cleaning Common Terms Common Terms Part Name and Description Parts List Parts@bradfordwhite.com Techserv@bradfordwhite.com