Navien NP-210A 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-210A Specifications

General

Brand	Navien
Model	NP-210A
Category	Water Heater
Language	English

Summary

Revisions

Navien Warranty

Handling of This Manual

Abbreviation and Definition

Safety Considerations

Safety Definitions and Symbols

Explains hazard levels (Danger, Warning, Caution) and their meanings.

Safety Precautions

Lists critical safety measures to prevent hazards like fire, explosion, and injury.

Product Information

Series and Model Overview

Introduces Navien Regular (NR) and Navien Premium (NP) series, including 'A' models.

Layout and Key Components

NR-A Model Components

Identifies and lists parts for the NR-A model with Navien Part Numbers.

NR Model Components

Identifies and lists parts for the NR model with Navien Part Numbers.

NP-A Model Components

Identifies and lists parts for the NP-A model with Navien Part Numbers.

NP Model Components

Identifies and lists parts for the NP model with Navien Part Numbers.

Technical Data

General Specifications

Provides key technical specifications like heat capacity, dimensions, and gas type for models.

Dimensions

Details the physical dimensions of NR-A/NP-A and NR/NP models with diagrams.

System Details

Schematic and Flow Diagram

Illustrates the internal workings and fluid paths of various Navien models.

Operation Flow Chart

Visually represents the sequence of operations and logic for the water heater.

Dip Switch Settings

Explains the function and configuration of DIP switches on the PCB for mode selection.

Wiring Diagram

Shows electrical connections for different models (NR-A, NP-A, NR, NP).

Electrical Diagnostic Points

Identifies specific points on the PCB for electrical testing and troubleshooting.

Key Components Description

Details critical components like PCB, thermal fuse, fan motor, gas valve, and flow sensor.

Troubleshooting

Error Code List

Lists error codes and their primary reasons and basic actions.

Troubleshooting by Error Code

Details specific error codes, their causes, and diagnostic/resolution steps.

Inspection

Preparing the Water Heater for Inspection

Lists necessary precautions and tools for performing a water heater inspection.

How to Check Inlet Gas Pressure

Step-by-step guide for checking the water heater's inlet gas pressure.

Adjusting the Gas-Air Ratio

Procedure for adjusting the gas-air mixture for optimal combustion.

Maintenance

Draining the Water Heater

Instructions for draining water from the waterway and condensate siphon.

Cleaning the Intake Air Filter

Guide for cleaning the air intake filter located near the fan.

Flushing the Heat Exchanger

Procedure for flushing the heat exchanger with a cleaning solution.

Replacement of Parts

Replacement Procedure

General precautions and steps before disassembling and replacing parts.

Components Replacement Instructions

Guides for replacing critical components like PCB, fan motor, gas valve, and flow sensor.

NR-A Water Way Disassembly

NR Water Way Disassembly

NP-A Water Way Disassembly

NP Water Way Disassembly

Inspection and maintenance Schedule

Inspection Report

Provides a checklist for recording results of annual inspections.

Maintenance Report

Provides a checklist for recording results of maintenance tasks.