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Navien NFC-200 - User Manual

Navien NFC-200
124 pages
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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 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
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 suppliers 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.
The installation must conform with local codes or, in the absence of local codes, the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.
Installation & Operation Manual
NFC Condensing Combi-Boilers
Model
NFC-175
NFC-200
H
NSF/ANSI 372
Keep this manual near this boiler 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.

Table of Contents

Other manuals for Navien NFC-200

Questions and Answers

  • C
    Christina BradfordAug 9, 2025
    Why is my Navien NFC-200 space heating not working?
    • S
      Sarah LeblancAug 9, 2025
      If your Navien Boiler's space heating isn't working, first ensure the power is on and the unit is plugged into an outlet with the correct voltage. Press the Power button and increase the set temperature to ensure the boiler is on. Also, when the unit is heating domestic hot water (DHW), the heating side will not operate. Finally, check and clean the filters on the heating side, as a restricted filter can cause malfunction.
  • C
    Cody DavisAug 18, 2025
    How to fix not hot enough water from Navien NFC-200?
    • A
      Anthony SnowAug 18, 2025
      If the water from your Navien Boiler's hot water faucet isn't hot enough, start by checking the boiler's temperature setting. You can find instructions for adjusting the temperature. Also, inspect the plumbing for cross-piping between the cold and hot water lines.
  • J
    jlloydAug 29, 2025
    What to do if Navien NFC-200 water is too hot?
    • R
      Ross AllenAug 29, 2025
      If the water from your Navien Boiler's hot water faucet is too hot, check the boiler's temperature setting and adjust it to a lower setting.

Summary

Safety Information

General Safety Precautions

General safety warnings, gas leak procedures, and precautions for flammable materials.

Operational Safety Warnings

Warnings regarding boiler operation, including cover removal, venting, and electrical safety.

Burn Prevention and Hot Water Safety

Information on preventing burns from hot water and safe temperature settings.

Installation Procedures

Gas Supply and Venting

Instructions for gas connection, pipe sizing, pressure checks, and boiler venting.

Boiler Operation and Settings

Troubleshooting and Diagnostics

Understanding Error Codes

Lists common error codes, their reasons, and self-diagnostic actions.

Getting Service

How to Obtain Service

Information on obtaining service, contacting support, and required details.

Navien NFC-200 Specifications

General IconGeneral
ModelNFC-200
CategoryBoiler
Efficiency95% AFUE
Water Connection Size1" NPT
Gas Connection Size3/4" NPT
Fuel TypeNatural Gas / Propane
Max. DHW Input (NG)199, 000 BTU/h
Max. DHW Input (LP)199, 000 BTU/h
DHW Capacity199, 000 BTU/h
Vent Size3 inch
TypeCondensing Combi Boiler

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