Navien NPN-199E User Manual

Getting Service
If your water heater requires service, you have several options for getting service:
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Contact Technical Support at 1-800-519-8794 or on the website: www.navieninc.com.
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For warranty service, always contact Technical Support first.
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Contact the technician or professional who installed your water heater.
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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:
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Model number
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Serial number
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Date purchased
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Installation location and type
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Error code, if any appears on the front panel display
800.519.8794 www.navieninc.com
20 Goodyear lrvine, CA 92618
Installation & Operation Manual
NPN Non-Condensing Water Heaters
TANKLESS WATER HEATERS · BOILERS
Version: 1.0 (January. 2021)

Navien NPN-199E Specifications

General

Category	Water Heater
Fuel Type	Natural Gas
Max. Input BTU	199, 000 BTU/h
Min. Input BTU	15, 000 BTU/h
Energy Factor	0.96
GPM at 45°F Rise	11.2 GPM
Water Connection Size	3/4" NPT
Gas Connection Size	3/4" NPT
Voltage	120V
Maximum Flow Rate	11.2 GPM
Energy Efficiency	96%
Heating Capacity	199, 000 BTU/h
Minimum Activation Flow Rate	0.5 GPM
Temperature Range	98°F - 140°F
Type	Condensing
Vent Size	2" or 3" PVC/CPVC
Vent Diameter	2" or 3"
Warranty	15 years on heat exchanger, 5 years on parts

Summary

Getting Service and Technical Support

Water Heater Installation Guide

Choosing Installation Location

Guidelines for selecting an appropriate installation site, considering clearance and access.

Mounting to the Wall

Instructions for securely attaching the water heater to a wall stud.

Connecting Gas Supply

Procedures and safety warnings for connecting the unit to the gas supply.

Connecting Water Supply

Steps and recommendations for connecting the water inlet and outlet.

Venting Procedures (Indoor Models)

Detailed instructions for proper venting of indoor water heaters.

Power Supply Connection

Guidelines and safety precautions for connecting the electrical power supply.

DIP Switch Configuration

Instructions on setting the water heater's operational parameters via DIP switches.

Remote Controller System Setup

Remote Controller Functions

Multi-Controller Setup & Synchronization

Recirculation Timer and Control

Cascade System Installation

Connecting Water Supplies for Cascade

Communication Cable Setup

Appendix and Reference Information

Installation Checklist

A comprehensive checklist to verify installation compliance and completeness.