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Bradford White D Series User Manual

Bradford White D Series
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Manual 47985A REV 08/18
SERVICE
MANUAL
Troubleshooting Guide
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
For The Bradford White
“D” Series Models:
D38T155
D75T(125,160,300)
D65T(370,399)
D80T(180,199,250)
D80T(425,505)
D100T(199,250)
D80L(399,450,505)
D100L(199,250,270,300)
D100S(199,250)
Gas Water Heaters
COMMERCIAL 24 VOLT FLUE DAMPER
SERIES WATER HEATER WITH HONEYWELL
INTEGRATED CONTROL SYSTEM
®
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Bradford White D Series Specifications

General IconGeneral
CategoryWater Heater
ManufacturerBradford White
SeriesD Series
TypeTank
Energy EfficiencyHigh
Fuel TypeNatural Gas / Propane
Vent TypePower Vent
First Hour RatingVaries by model
Energy FactorVaries by model
Recovery RateVaries by model
HeightVaries by model
DiameterVaries by model
WeightVaries by model

Summary

Features of Honeywell Integrated Controls System

Introduction and Manual Overview

Purpose of the Manual

Explains the manual's intent for qualified service personnel and troubleshooting.

Tools Required for Service

Lists essential tools and equipment needed for servicing the water heater.

Water Heater Specifications

Sequence of Operation

Troubleshooting Guide

Water Heater Operation Faults

Steps for diagnosing operational issues like the heater not starting.

Display Errors and Blank Screens

Guides for troubleshooting display issues, including blank screens.

Service Mode Operations

Accessing and Entering Service Mode

Step-by-step guide to enter and navigate the water heater's service mode.

Service Mode Settings and Information

Managing setpoints, temperatures, system info, and error history.

Adjusting Water Heater Settings

Changing Maximum Setpoint Limit

Procedure to modify the maximum allowable temperature setpoint.

Changing Temperature Format

How to change display temperature unit from Fahrenheit to Celsius or vice versa.

Error Code Management

Error Code Definitions and History

Explanation of error codes, their meanings, and how to access historical error data.

Honeywell Integrated Control Error Codes

Lists and defines specific error codes for 24 Volt Damper Models.

Resetting Lockout Conditions

Lockout Reset Procedures

Steps for resetting soft and hard lockouts via User or Service modes.

Comprehensive Service Procedures

Thermostat Circuit Testing (D24-I)

Diagnosing thermostat circuit issues, sensor readings, and overheating errors.

Pilot Operation and Inspection (D24-II)

Troubleshooting pilot lighting, flame signals, and inspecting pilot components.

Main Burner Testing and Inspection (D24-III)

Diagnosing main burner ignition, short cycling, and testing gas pressure.

Component Removal and Inspection (D24-IV)

Procedures for removing and inspecting main burners, pilots, and control boards.

Flue Baffle and Anode Inspection (D24-V/VI)

Steps for removing and inspecting flue baffles and anode rods.

Approximate Anode Rod Locations

Generic Parts List

Generic Parts List Diagrams

Generic Parts List Wiring Diagrams

Glossary of Terms

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