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Flammable Vapor Ignition Resistant
Water Heaters
Direct Vent Water Heaters
SERVICE
MANUAL
Troubleshooting Guide
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
RG2DV40S*(N,X)
RG2DV50S*(N,X)
RG2DV50H*(N,X)
LG2DV50H50*(N,X)
(*) Denotes Warranty Years
Manual 238-51636-00C REV 08/19
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Table of Contents
Related Manuals for Bradford White RG2DV40S Series
Summarization of Contents
Introduction, Safety, and Tools
General Safety Precautions
Essential safety warnings and precautions for operating and servicing the water heater.
Introduction and Safety System Overview
Overview of the DV Series water heaters, features, and safety system operation.
Tools Required for Service
List of necessary tools and equipment for performing maintenance and repairs.
Troubleshooting Gas Controls
Troubleshooting Gas Control V1
Diagnostic guide for Gas Control V1 using LED status codes and probable causes.
Troubleshooting Gas Control V2
Diagnostic guide for Gas Control V2 using LED status codes and probable causes.
Troubleshooting Mechanical Gas Controls
Symptom-based troubleshooting for White Rodgers mechanical gas controls.
Troubleshooting Electronic Gas Controls
Diagnostic guide for electronic gas controls using LED status codes.
Service Procedures - Internal Components
Inner Door and Gasket Service
Steps for inner door removal, inspection, and gasket replacement.
Thermocouple and Thermopile Service
Procedures for testing and replacing thermocouples and thermopiles.
Igniter and Electrode Service
Guide for testing and replacing igniter and electrode components.
Service Procedures - Gas Control System
Gas Pressure and ECO Testing
Procedures for testing gas pressures and the Energy Cut Out (ECO) function.
Thermostat/Gas Valve Replacement (Mechanical)
Steps for replacing the thermostat/gas valve assembly on mechanical controls.
Honeywell Gas Control Access and Sensor Testing
Accessing Honeywell controls and testing the temperature sensor.
Gas Control Replacement Procedures
Detailed instructions for replacing gas controls on electronic and Honeywell units.
Service Procedures - Combustion and Safety Components
Burner Inspection and Cleaning
Procedures for inspecting and cleaning the water heater's burner assembly.
Pilot Testing and Replacement
Steps for testing, cleaning, and replacing the pilot assembly.
Resettable Thermal Switch Service
Testing and replacement procedures for the resettable thermal switch.
Diptube Inspection and Replacement
Instructions for inspecting and replacing the water inlet dip tube.
Anode Inspection and Replacement
Guide for inspecting and replacing the anode rod for corrosion protection.
Reference Information
Glossary of Terms
Definitions of technical terms and abbreviations used in the manual.
Parts Diagram
Exploded view diagram of water heater components with part identification.
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