Rinnai REU-KBP3237FFUD-US Training Program

Rinnai REU-KBP3237FFUD-US Training Program

Condensing tankless water heater, level iii, service fundamentals

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Rinnai Condensing Tankless
Water Heater Training Program
Level III
Service Fundamentals
Enhancing Lives By Changing The Way Water Is Heated
© 2016 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
1
5/4/2018

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Summarization of Contents

Rinnai Support and Resources
Contacting Rinnai Service Departments
Information on Consumer Response, Parts, Warranty, and Technical Support.
Online Support and Training Resources
Accessing Rinnai's website for manuals, specs, and training.
Water Heater Disassembly and Reassembly Procedures
Front Panel Removal and Information
Steps to remove and identify components on the water heater's front panel.
Heat Exchanger Assembly Removal
Detailed instructions for removing the heat exchanger assembly from the unit.
PC Board Removal and Replacement
Guide for safely removing and installing the printed circuit board.
Product Reassembly Key Points
Essential guidelines for correct reassembly after service.
System Safety Features
Overheat Protection Mechanisms
Explanation of thermistors, switches, and thermal fuses for safety.
Freeze Protection Operation
How the freeze protection system activates and functions.
Electrical System Diagnostics
Electrical Diagnostic Procedures
Verifying component values and troubleshooting electrical issues.
Multimeter Settings and Usage
Correct multimeter settings for AC/DC voltage, resistance, and current.
Wiring Diagram and Schematic
Understanding the water heater's electrical wiring layout.
Temperature Controller Operation and Settings
MC-91-2 Controller Functions
Using the MC-91-2 for temperature indication, thermostat, and diagnostics.
MC-195T Timer/Controller Features
Capabilities of the MC-195T for Circ-Logic and timer functions.
Temperature Range Configuration
Setting standard and alternate temperature ranges via dip switches.
Maintenance, Fault Codes, and Troubleshooting
Fault Codes and Error Resolution
Identifying and resolving common fault codes and error messages.
Troubleshooting Water Flow Issues
Diagnosing and fixing problems related to water flow and pressure.
Setting Manifold Gas Pressures
Procedure for adjusting gas pressure settings based on altitude and vent length.

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