Navien NP-180 User Manual

Service
Manual
Service Manual
NR/NP
Tankless Gas Water Heater
Tankless Gas Water Heater
Ver. 2.00
Navien America, Inc.
20 Goodyear lrvine, CA 92618
TEL +949-420-0420 FAX +949-420-0430
www.naviennamerica.com
MODEL
2
nd
Edition - July 2010
No. 20A-GT-001
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
WARNING
If the information in these instructions is not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire department.
NR-180 NP-180 NR-180A NP-180A
NR-210 NP-210 NR-210A NP-210A
NR-240 NP-240 NR-240A NP-240A
Tankless Gas Water Heater
NR/NP Series
Service
Manual
Service Manual
Service Manual

Navien NP-180 Specifications

General

Brand	Navien
Model	NP-180
Category	Water Heater
Language	English

Summary

Navien Warranty

Warranty Coverage Details

Details Navien's warranty for water heaters and component parts, including coverage periods for heat exchangers and other parts.

Warranty Exclusions and Conditions

Lists specific conditions and circumstances not covered by the product warranty, including exclusions and misuse.

Safety Considerations

Hazard Warnings and Precautions

Details critical hazard warnings and precautions, including flammability, venting, temperature limits, and gas leak procedures.

General Safety and Installation Requirements

Emphasizes crucial safety guidelines and installation requirements for proper unit operation.

Product Information

Product Overview

Key Components Layout

Identifies and lists key components for NR-A, NP-A, NR, and NP models with part numbers.

Technical Data

General Specifications

System Details

Schematic and Flow Diagrams

Illustrates the system's schematic and flow diagrams for different NR/NP models.

Operation Flow Chart

Wiring Diagrams

Electrical Diagnostic Points

Key Components Description

Control and Sensor Components

Ignition and Combustion System

Troubleshooting

Error Code List

Lists error codes, their reasons, and corresponding self-diagnostic/action steps.

Troubleshooting by Error Code

Provides detailed diagnostic and resolution steps for various error codes.

Troubleshooting by Symptom

Inspection and Maintenance

Gas Pressure Measurement and Adjustment

Replacement of Parts

Replacement Procedure Overview

Component Replacement Instructions