Navien NR-180(A) User Manual

NR-180(A) NP-180(A)
NR-210(A) NP-210(A)
NR-240(A) NP-240(A)
Navien
Conden
sing
Water Heater
Manua
l
- WHAT TO DO IF YOU SMELL GAS
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 n
eighbor’s phone. Follow the gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a
qualified installer, service agency
or the gas supplier.
- Please return the “Manual” to t
he customer after installing.
If the information in these instructions is not followed exactly,
a fire or
explosion may result causing property damage, personal injury or death.
This product warranty is valid only used in the America and Canada
but automatically be voided for other countries. (for America and
Canada unit standard only)
- Do not store or use
gasoline or other flammable vapors and liquids in the vicinity
of this or other appliance.
Operation & Installation
Manual

Navien NR-180(A) Specifications

General

Type	Tankless
Fuel Type	Natural Gas/Propane
Gas Connection	3/4" NPT
Water Connection	3/4" NPT
Voltage	120V AC
Minimum Activation Flow Rate	0.5 GPM
Heating Capacity	180, 000 BTU/hr
GPM @ 70°F Rise	8.4 GPM
Energy Efficiency	0.96
Energy Factor	0.96
Temperature Range	140°F
Venting	PVC, CPVC, Polypropylene
Warranty	15 years on heat exchanger, 5 years on parts

Summary

Safety Instructions

Safety Related Symbols

Explains safety alert symbols like DANGER, WARNING, and CAUTION.

Safety Precautions

Lists essential safety precautions for operating the water heater.

Flammable Vapors Warning

Warns about flammable liquids and their proximity to the water heater.

Gas Leak Emergency Procedures

Provides instructions on what to do if gas is detected.

Venting System Safety

Warns about the dangers of an improperly vented system.

Installation

Installation Warnings

Additional safety issues and code compliance requirements for installation.

Getting Started

Rating Plate Checks

Location and Mounting

Factors for selecting location and instructions for wall mounting.

Plumbing System

Guidelines for water connections, pipe sizing, and system compatibility.

Gas System

Recommendations for sizing, pressures, and measuring gas supply lines.

Venting System

Critical guidelines for safe and proper venting of exhaust gases.

Electrical Connections

Electrical wiring requirements, grounding, and surge protection.

Cascade Systems

Completing the Install

Operation

Operational Safety Instructions

Dangers associated with setting water temperature too high.

Navien Warranty Information

Temperature Adjustment

Hot Water Temperature Adjustment

'A' Series Circulation Function

'A' Series Internal Recirculation Mode

'A' Series External Recirculation Mode