NHB-150 premium features and benefits
2" venting up to 65';
3” up to 150’ (including schedule 40 PVC).
The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
NHB integrated control provides industry-leading options and features including adjustable heat capacity, temp boost for outdoor reset control, adjustable anti-cycle timer and freeze protection.
1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.
NHB-150 QuickFacts
17.0" W x 24.0" H x 13.0" D (43.2cm W x 61.0cm H x 33.0cm D)
Product approvals
- CSA
- Yes
- SCAQMD 1146.2(NOx, <20ppm)
- Yes
- ASME Certified
- Yes "H" Stamp
- AHRI Number
- 7501498
- Energy star certified
- Yes
Space Heating Ratings
- AFUE, %
- 95.0
- Heating Capacity
- 138,000 BTU/h (40.4 kWh)
Model | NHB-150 |
---|---|
Range | 10,000 - 150,000 BTU/h (2.93 - 43.95 kWh) |
TDR | 15:1 |
Navien Condensing Boiler Space Heating Ratings | ||
---|---|---|
Model1 | NHB-150 | |
Heating Input | Min | 10,000 BTU/h (2.9 kWh) |
Max | 150,000 BTU/h (44 kWh) | |
Heating Capacity2 | 138,000 BTU/h (40.4 kWh) | |
Net AHRI Rating, Water3 | 120,000 BTU/h (35.2 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-150 | |
---|---|---|
Dimensions | 17.0" W x 24.0" H x 13.0" D (43.2cm W x 61.0cm H x 33.0cm D) | |
Boiler weight | 80 lbs (36.3 kg) | |
Installation location | 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 | -0.4 " WC (-0.099 kPa) | |
Propage gas manifold pressure | -0.3 " WC (-0.075 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.
NHB-150 FAQs
What is error code E001 on NHB-150?
Error code E001 appears on the front panel when the heat exchanger is over temperature. One possible remedy is to perform an Auto reset, Manual reset, or Power on reset. If that doesn’t work, the service technician should contact Navien’s technical support at 1-800-519-8794.
What is error code 302 on NHB-150?
Error code E302 appears on the front panel when your system has low water pressure. A possible remedy is a Manual reset. If that doesn’t work, the service technician should contact Navien’s technical support at 1-800-519-8794.