Navien NCB-180E Service Manual

Getting Service
If your boiler requires service, you have several options for getting service:
●
Contact Technical Support at 1-800-519-8794 or on the website: www.navienamerica.com.
For warranty service, always contact Technical Support first.
●
Contact the technician or professional who installed your boiler.
●
Contact a licensed professional for the affected system (for example, a plumber or electrician).
When you contact Technical Support, please have the following information at hand:
●
Model number
●
Serial number
●
Date purchased
●
Installation location and type
●
Error code, if any appears on the front panel display.
Navien, Inc.
800.519.8794
www.Navien.com
20 Goodyear lrvine, CA 92618
Service Manual
NCB-E Condensing Combi Boiler
THE LEADER IN CONDENSING TECHNOLOGY
Version: 1.4 (Oct 26, 2015)

Navien NCB-180E Specifications

General

Fuel Type	Natural Gas or Propane
Type	Condensing Boiler
Efficiency	95%
Ignition Type	Electronic
Vent Type	Direct Vent
Vent Diameter	3 inch

Summary

Safety Information

Safety Definitions

Definitions of safety terms used in the manual to ensure safe operation.

Safety Symbols

Explanation of safety symbols used to indicate potential hazards and warnings.

Symbols Used in the Instructions

Key symbols used to highlight important information and risks within the instructions.

Safety Precautions

Essential safety measures and warnings to prevent hazards during operation and maintenance.

System Details

Setting the DIP Switches

Measuring the Inlet Gas Pressure

Gas Conversion

The Front Panel

Troubleshooting

Error code classification

Categorization of error codes based on system type and severity for systematic diagnosis.

Error Code List

Comprehensive list of error codes with their functions and self-diagnostic/action steps.

Troubleshooting guide by symptom

Replacement of Parts

Replacement Procedure

General guidelines and precautions for safely replacing boiler components.

Components Replacement Instructions

Detailed step-by-step instructions for replacing specific boiler components.

Inspection and Maintenance Schedule

Annual Servicing

Recommendations for yearly servicing to ensure optimal and safe boiler performance.

Maintenance Schedules