Navien NFC Series User Manual

14 Maintaining the Boiler
4. Remove the screw that secures the air intake filter (the filter is
located at the top left of the boiler).
5. Pull the filter out of the boiler.
6. Remove the filter from the plastic assembly. Dust and rinse it
with clean running water.
7. Allow the filter to dry completely.
8. Place the filter assembly back into the boiler and secure it with
the screw.
9. Replace the front cover.
10. Reconnect the power supply to the boiler.
11. Press the Power button on the front panel to turn on the boiler.

Navien NFC Series Specifications

General

Model	NFC Series
Fuel Type	Natural Gas or Propane
Vent Type	Direct Vent
Heat Exchanger Material	Stainless Steel
Efficiency	95% AFUE
Warranty	5-Year Limited Parts Warranty
Venting	PVC, CPVC
Type	Condensing Fire Tube Combi-Boiler (NFC-150, NFC-175, NFC-200), Condensing Fire Tube Boiler (NFC-250, NFC-300)