Navien NFC-250/175H, User'S Information Manual

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2 Contents
Contents
1. Safety Information 3
2. About the Boiler 7
2.1 Description of the Boiler 7
2.2 Parts of the Boiler 7
2.3 The Front Panel 8
3. Operating the Boiler 10
3.1 Turning the Boiler On or Off 10
3.2 Adjusting the System Temperatures 10
3.3 Accessing Basic Menu Items 12
3.4 Resetting the Boiler 13
4. Maintaining the Boiler 14
4.1 Cleaning the Boiler 14
4.2 Draining the Boiler 14
4.3 Cleaning the Air Intake Filter 15
4.4 Protecting the Boiler from Freezing 17
4.5 Maintenance Schedules 18
5. Troubleshooting 23
5.1 Solving Basic Problems 23
5.2 Understanding Error Codes 24