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17.0" W x 24.0" H x 12.0" D (43.2cm W x 61.0cm H x 30.5cm D)
| Product approvals | CSA | Yes |
| SCAQMD 1146.2(NOx, <20ppm) | Yes | |
| ASME Certified | Yes "H" Stamp | |
| AHRI Number | 7501496 | |
| Energy star certified | Yes | |
| Space Heating Ratings | AFUE, % | 95.0 |
| Heating Capacity | 74,000 BTU/H (21.7 kWh) |
| Model | NHB-80 |
|---|---|
| Range | 8,000 - 80,000 BTU/H (2.344 - 23.44 kWh) |
| TDR | 10:1 |
Navien Condensing Boiler Space Heating Ratings | ||
|---|---|---|
| Model1 | NHB-80 | |
| Heating Input | Min | 8,000 BTU/H (2.3 kWh) |
| Max | 80,000 BTU/H (23.4 kWh) | |
| Heating Capacity2 | 74,000 BTU/H (21.7 kWh) | |
| Net AHRI Rating, Water3 | 64,000 BTU/H (18.8 kWh) | |
| AFUE2, % | 95.0 | |
1 Ratings are the same for Natural Gas models converted to Propane use.
2 Based on U.S. Department of Energy (DOE) test procedures.
3 The NET AHRI Water Ratings shown are based on a piping and pickup allowance of 1.15. Consult Navien before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
| Item | NHB-80 | |
|---|---|---|
| Dimensions | 17.0" W x 24.0" H x 12.0" D (43.2cm W x 61.0cm H x 30.5cm D) | |
| Boiler weight | 73 lbs (33.1 kg) | |
| Installation type | Indoor wall-hung | |
| Venting type | Forced draft direct vent | |
| Ignition | Electronic ignition | |
| Natural gas supply pressure (from source) | 3.5 " WC to 10.5 " WC (0.87 Kpa to 2.61 Kpa) | |
| Propane gas supply pressure (from source) | 8 " WC to 13 " WC (1.99 Kpa to 3.23 Kpa) | |
| Natural gas manifold pressure | -0.08 " WC (-0.02 Kpa) | |
| Propage gas manifold pressure | -0.07 " WC (-0.017 Kpa) | |
| Connection sizes | Gas inlet | 3/4" NPT (hembra) |
| Power supply | Main supply | 120V AC, 60Hz |
| Maximum power consumption | Less than 10A | |
| Materials | Casing | Cold rolled carbon steel |
| Heat exchangers | Primary and secondary heat exchangers: stainless steel | |
| Venting | Exhaust | 2" or 3" PVC, CPVC, approved polypropylene (see installation manual for more details) 2" or 3" special gas vent type BH (Class III, A/B/C) |
| Intake | 2" or 3" PVC, CPVC, polypropylene 2" or 3" special gas vent type BH (Class III, A/B/C) | |
| Vent clearances | 0" to combustibles | |
| Safety Devices | Flame rod, APS, gas valve operation detector, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor | |
Navien reserves the right to change specifications at any time without prior notice.