Table of Contents

Section

Page

Introduction ______________________________________________5

How to Use this Manual _____________________________________6

Tools Required for Service ___________________________________7

Specifications _____________________________________________8

Sequence of Operation_____________________________________ 12

Power Up Sequence Normal Heating Sequence Abnormal Operation

Troubleshooting __________________________________________ 17

Burner Maintenance _______________________________________ 20

Burner Inspection

Burner Cleaning Procedure

Pilot Maintenance _________________________________________ 22

Pilot Inspection Testing and Replacement

Pressure Switch Testing and Replacement _____________________ 25

Blower Testing and Replacement _____________________________ 28

Blower Temperature Switch Testing and Replacement ____________ 31

Thermal Well Testing ______________________________________ 34

Determine Water Temperature Inside Tank_____________________ 35

Gas Control and Thermal Well Testing and Replacement __________ 36

Flammable Vapor Sensor Testing and Replacement ______________ 40

115 VAC Circuit Trace _____________________________________ 40

Safety Circuit Voltage Trace_________________________________ 42

Flue Baffle Inspection and Replacement _______________________ 43

Diptube Inspection and Replacement _________________________ 44

Anode Inspection and Replacement___________________________ 45

Inner Door Removal, Inspection and Replacement _______________ 46

Inner Door Gasket Replacement _____________________________ 47

Inner Door Installation_____________________________________ 48

ScreenLok ® Flame Arrestor Cleaning_________________________ 49

Common Terms __________________________________________ 50

Notes __________________________________________________ 50

Parts List _______________________________________________ 51

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Bradford-White Corp U2TW50T*FRN, UTW450S60FR*N, UTW465S60FR*N, U2TW65T*FRN, U1TW60T*FRN, U1TW40S*FRN Table of Contents

U1TW40S*FRN, U2TW65T*FRN, UTW450S60FR*N, U1TW60T*FRN, UTW465S60FR*N specifications

Bradford-White Corp has long been a reputable manufacturer in the water heating industry, known for delivering high-quality and reliable products. Among their diverse range of water heaters, the U1TW40S*FRN, U1TW50S*FRN, U1TW60T*FRN, UTW465S60FR*N, and UTW450S60FR*N models stand out for their advanced features and technologies designed to meet varying hot water demands.

The U1TW series, including the U1TW40S*FRN, U1TW50S*FRN, and U1TW60T*FRN models, are well-suited for residential applications. Each model provides different capacities, with the numbers referring to the gallon capacities. The U1TW40S*FRN offers 40 gallons, the U1TW50S*FRN 50 gallons, and the U1TW60T*FRN 60 gallons, making them ideal for households varying in size and hot water requirements.

These models are equipped with Bradford-White's advanced Vitraglas® tank lining, a unique feature that provides superior protection against corrosion and extends the unit's lifespan by ensuring the inner tank remains free from damage. Additionally, their efficient heating elements and optimal insulation minimize heat loss, enhancing energy savings.

The UTW series, specifically the UTW465S60FR*N and UTW450S60FR*N, feature innovative technologies such as a durable stainless steel construction that offers robust performance while resisting the harmful effects of rust and degradation. This is particularly beneficial in areas with hard water, where mineral buildup can be problematic.

Each unit incorporates Bradford-White's signature HydroBurner® technology, which enhances combustion efficiency, ensuring that the water is heated quickly and consistently. This technology also helps in reducing greenhouse gas emissions, addressing environmental concerns while maintaining optimal performance.

In terms of ease of use, all models come with user-friendly controls that allow for easy temperature adjustments and monitoring, ensuring that users can customize their hot water needs conveniently. Additionally, features such as intuitive diagnostics enable quick troubleshooting, reducing downtime and maintenance efforts.

In conclusion, Bradford-White’s U1TW and UTW series water heaters are engineered to offer efficiency, durability, and user-friendly operation. With their advanced technology, excellent insulation, and robust construction, these models are a solid choice for anyone looking to invest in reliable hot water solutions for their home. Whether for a busy family or more modest hot water needs, these units provide peace of mind and consistent performance.