| Connection sizes (Gas inlet) | 3/4" NPT |
| Natural gas supply pressure (from source) | 3.5 " WC to 10.5 " WC |
| Propane gas supply pressure (from source) | 8 " WC to 13 " WC |
| Natural gas manifold pressure (min-max) | -0.03 " WC to -0.7 " WC |
| Propane gas manifold pressure (min-max) | -0.02 " WC to -0.68 " WC |
| Power supply (Main supply) | 120V AC, 60Hz |
| Power supply (Maximum power consumption) | Less than 15 amperes |
| Venting (Exhaust) | 2" or 3" PVC, CPVC, approved polypropylene 2" or 3" special gas vent type BH (Class III, A/B/C) 2" or 3" stainless steel |
| Venting (Intake) | 2" or 3" PVC, CPVC, polypropylene 2" or 3" special gas vent type BH (Class III, A/B/C) 2" or 3" stainless steel |
| Venting (Vent clearances) | 0" to combustibles |
| Dimensions | 17.3" W x 27.6" H x 17.3" D |
| Boiler weight | 121 lbs |
| Materials (Casing) | Cold-rolled carbon steel |
| Materials (Heat exchangers) | Stainless steel |
| Safety Devices | Flame rod, APS, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, water pressure sensor |
| AHRI number | 206368828 |
| Energy star certified | Yes |
| CSA | Yes |
| SCAQMD 1146.2 (NOx, <20ppm) | Yes |
| ASME Certified | Yes "H" Stamp |
- NFB-H Series Submittal Sheet PDF ↗
- NFB-H Technical Data Sheet PDF ↗
- NFB-H Installation & Operation Manual PDF ↗
- NFB-H User's Information Manual PDF ↗
- NFB-H Gas Conversion Guide PDF ↗
- NFB-H High Altitude Conversion Guide PDF ↗
- NFB-H LP Gas and High Altitude Conversion Guide PDF ↗
- NFB-H NG and High Altitude Conversion Guide PDF ↗
Description
The Navien High Efficiency Condensing Heating Boiler Max Htg Input: 175,000 BTU/h, Indoor Wall-Hung, Residential/Commercial NFB-175H by Navien is part of our condensing boilers selection.
- Brand: Navien
- Manufacturer Part #: NFB-175H
- UPC: 884954919171
- Category: Condensing Boilers
- Shipping Weight: 123 lb