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Navien NPE-180S User Manual

Navien NPE-180S
103 pages
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WARNING
If the information in these instructions is not followed exactly, a re or explosion may result, causing
property damage, personal injury or death.
Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other
appliance.
What to do if you smell gas
Ɣ
Do not try to light any appliance.
Ɣ
Do not touch any electrical switch; do not use any phone in your building.
Ɣ
Immediately call your gas supplier from a neighbor’s phone. Follow the gas suppliers instructions.
Ɣ
If you cannot reach your gas supplier, call the re department.
Installation and service must be performed by a qualied installer, service agency or the gas supplier.
The installation must conform with local codes or, in the absence of local codes, the National Fuel Gas Code,
ANSIZ223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.
When applicable, the installation must conform with the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240 MH Series, Mobile Homes.
* Lead Free
Keep this manual near this water heater for future reference
whenever maintenance or service is required.
* The wetted surface of this product contacted by consumable
water contains less than one quarter of one percent (0.25%) of
lead by weight.
Installation & Operation Manual
NPE Condensing Water Heaters
Model
NPE-180A
NPE-210A
NPE-240A
NPE-150S
NPE-180S
NPE-210S
NPE-240S
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Questions and Answers:

Navien NPE-180S Specifications

General IconGeneral
TypeTankless
Fuel TypeNatural Gas or Propane
Flow Rate9.8 GPM
Gas Connection3/4 inch NPT
Water Connection3/4 inch NPT
Voltage120V
Maximum BTU Input180, 000 BTU/hr
Temperature Range98°F to 140°F
Venting2"/3" PVC, CPVC, Polypropylene
Warranty15 years heat exchanger, 5 years parts
Max. Output BTU180, 000 BTU/h
Minimum BTU Input15, 000 BTU/h

Summary

Safety Information

Gas Leak and Flammable Materials Safety

Procedures for responding to gas leaks and safely storing flammable materials.

General Installation Safety Warnings

Key safety warnings related to installation, including combustibles, electrical shock, and CO poisoning.

Burn Prevention and Temperature Safety

Guidelines to prevent burns and ensure safe water temperature settings.

About the Water Heater

Specifications

Provides technical specifications for various water heater models.

Installing the Water Heater

3.1 Choosing an Installation Location

Guides on selecting an appropriate location for water heater installation.

Installation Location Requirements and Clearances

Details clearances, utilities access, drainage, venting, and proximity to fixtures.

3.2 Mounting the Water Heater to the Wall

Provides instructions and warnings for securely mounting the water heater.

3.3 Connecting the Gas Supply

Explains procedures and safety precautions for connecting the gas supply.

3.3.2 Measuring Inlet Gas Pressure

Details how to measure gas pressure for proper water heater operation.

3.4 Connecting the Water Supply

Guides on connecting water supply lines and filtering.

3.4.3 External Pump Wire Connection

Details connecting an external pump for recirculation applications.

3.4.4 Connecting a Pressure Relief Valve

Instructions for installing a required pressure relief valve.

3.5 Connecting the Condensate Drain

Explains how to connect the condensate drain line and disposal options.

3.6 Venting the Water Heater

Crucial safety and installation guidelines for venting the water heater.

3.6.1 Selecting a Vent Type

Guidance on choosing appropriate vent types and materials.

3.7 Connecting the Power Supply

Critical safety and electrical connection guidelines.

Installing a Cascade System

4.1 Connecting Water Supplies

Illustrates plumbing options for connecting multiple water heaters.

Installing a Common Vent System

5.1 About the Common Vent System

Introduces the common vent system for multiple NPE units.

5.1.1 Guidelines for a Common Vent System

Key safety and installation guidelines for common vent systems.

5.5 Installing a Condensate Drain

Instructions for installing a condensate drain hose for the common vent system.

Operating the Water Heater

6.2 Adjusting the Water Temperature

Guides on safely adjusting the water temperature setting.

6.5 Setting the Parameters

Instructions for accessing and adjusting special operational parameters.

Appendixes

7.1 Gas Conversion

Detailed instructions and safety warnings for converting gas type.

7.6 Installation Check list

Comprehensive checklist to ensure proper installation.

Getting Service

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