Navien NPN-180E 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-180E Specifications

General

Brand	Navien
Model	NPN-180E
Category	Water Heater
Language	English

Summary

Safety Information

General Safety Precautions

Covers gas safety, flammables, and general warnings for safe operation.

Burn Prevention

Details risks of scalding from hot water and preventative measures.

Installing the Water Heater

Choosing an Installation Location

Guides on selecting a suitable site, considering clearances and water quality.

Mounting the Water Heater

Provides instructions and warnings for securely attaching the unit to a wall.

Connecting the Gas Supply

Details procedures and safety precautions for connecting the gas line.

Connecting the Water Supply

Outlines guidelines for connecting the cold and hot water lines.

Connecting a Pressure Relief Valve

Details the installation of a required safety pressure relief valve.

Venting the Water Heater

Covers installation and safety requirements for the exhaust venting system.

Vent Installation Detector (VID)

Maintaining Vent Clearances

Draining Condensate

Connecting the Power Supply

Details electrical connection procedures and safety requirements.

Setting the DIP Switches

Configuring the Remote Controller System

Multi Remote Controller System

Installing a Cascade System

Connecting Water Supplies and Communication