Navien NFC-250/200H User Manual

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
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 supplier’s instructions.
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, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation
Code.
+
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.
User’s Information Manual
NFC-H Condensing Combi-Boilers
Model
NFC-250/175H
NFC-250/200H
u
al near this boiler for future re
f
n
tenance or service is re
q
uired.

Navien NFC-250/200H Specifications

General

Brand	Navien
Model	NFC-250/200H
Category	Boiler
Language	English

Summary

1. Safety Information

Handling Gas Leaks

Essential steps to take if you detect a gas leak in the vicinity.

2. About the Boiler

Boiler Description and Features

Overview of the Navien NFC-H boiler and its main operational features.

Boiler Components Identification

Identification of key parts via front and bottom view diagrams.

Front Panel Display and Icons

Explanation of the front panel's icons, digital display, and controls for operation.

Front Panel Buttons and Command Dial

Details on using the power, back, mode buttons, and command dial for control.

3. Operating the Boiler

Turning the Boiler On and Off

Instructions for powering the boiler on and off using the main power button.

Adjusting System Temperatures

Instructions for adjusting space heating and DHW temperatures.

Accessing Boiler Menu Items

Navigating the main menu to view status, operations, and error history.

Resetting the Boiler

Procedure for resetting the boiler to resolve operational issues or error messages.

4. Maintaining the Boiler

Cleaning and Draining Procedures

Instructions for cleaning the boiler exterior and draining water for maintenance.

Air Intake Filter Maintenance

Steps to clean the air intake filter for proper operation and error prevention.

Freeze Protection Guidelines

Guidelines and precautions to prevent freezing damage to the boiler.

Maintenance Schedules Overview

Overview of owner and service technician maintenance tasks and frequencies.

5. Troubleshooting

Solving Basic Problems

Chart detailing common problems, their causes, and solutions.

Understanding Error Codes

Explanation of error codes and recommended actions for diagnostics.

Warranty Information

Warranty Coverage and Service

Details what the warranty covers, periods, and how to obtain service.

Warranty Exclusions and Limitations

Lists conditions that void the warranty and legal limitations.

Getting Service

Contacting Technical Support

Information on how to contact Navien for service and required details.