NCB-190/080H premium features and benefits
![Ncb-h (vp)](https://navien-production-3.s3-us-west-2.amazonaws.com/2022/04/27/22/14/23/fdfd5485-9bef-49db-8401-94cb479eb2c1/NCB-H_(vp).png)
![A](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/1838/f7a3263dfe9dac481f4990a731863d94e3f3e2fb/A.png)
2" PVC venting up to 65 feet including economical schedule 40 PVC.Vent Installation Detector (VID) for added safety.
![B2](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/1852/29b64d002f95e5be41fa08568ac64a08ff1d9fbc/B2.png)
Dual Venturi system creates better combustion control and turndown ratio and easy field gas conversions.
![Dual stainless steel heat exchanger-c-new](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/2216/468d5db6da816ed7f549a40379cfc34f6456e4d8/Dual_stainless_steel_heat_exchanger_C_New.png)
Durable dual condensing stainless steel heat exchangers recover extra heat for maximum efficiency.
![Ncb-h-insidestory-opened-sm](https://navien-production-3.s3-us-west-2.amazonaws.com/2023/01/05/04/17/15/d9cfe834-4e29-44b4-a68e-f5818a59d3f6/NCB-H-InsideStory-opened-sm.png)
![Control](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/1858/37c405d8e914b40c8c226bc9860908ba03bb0d12/Control.png)
Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.
![Tube](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/1854/f32fc7f3bc21d8c891526b2747086e32a02b6e11/Tube.png)
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.
![F4](https://navien-production-3.s3-us-west-2.amazonaws.com/pictures/1851/1900edc41c18de9741a7950133457963576c0716/F4.png)
Easily accessible built-in DHW module includes integrated boiler pump, flow adjustment valve, DHW stainless steel heat exchanger, mixing valve and 3-way valve.
NCB-190/080H QuickFacts
17.3" W x 29.3" H x 12.8" D (43.9cm W x 74.4cm H x 32.5cm D)
Product approvals
- CSA
- Yes
- SCAQMD 1146.2(NOx, <20ppm)
- Yes
- Low Lead(<0.25%, DHW only)
- Yes
- ASME Certified
- Yes "H" Stamp
- AHRI Number
- 205661697
- Energy star certified
- Yes
Space Heating Ratings
- AFUE, %
- 95.0
- Heating Capacity
- 74,000 BTU/h (21.7 kWh)
DWH Temp Rise | NCB-190/080H |
---|---|
35 °F (19.4 °C) rate | 8.2 GPM (31 l/m) |
40 °F (22.2 °C) rate | 7.2 GPM (27.3 l/m) |
45 °F (25 °C) rate | 6.4 GPM (24.2 l/m) |
50 °F (27.8 °C) rate | 5.8 GPM (22 l/m) |
55 °F (30.6 °C) rate | 5.2 GPM (19.7 l/m) |
60 °F (33.3 °C) rate | 4.8 GPM (18.2 l/m) |
67 °F (37.2 °C) rate | 4.3 GPM (16.3 l/m) |
70 °F (38.9 °C) rate | 4.1 GPM (15.5 l/m) |
77 °F (42.8 °C) rate | 3.7 GPM (14 l/m) |
80 °F (44.4 °C) rate | 3.6 GPM (13.6 l/m) |
85 °F (47.2 °C) rate | 3.4 GPM (12.9 l/m) |
90 °F (50 °C) rate | 3.2 GPM (12.1 l/m) |
100 °F (55.6 °C) rate | 2.9 GPM (11 l/m) |
Model | NCB-190/080H |
---|---|
Heating | 11,000 - 80,000 BTU/h (3.223 - 23.44 kWh) |
DHW | 10,000 - 160,000 BTU/h (2.93 - 46.88 kWh) |
For NCB-H technical drawings of specific installations and requirements please visit NavienInc.com
Item | Temperature Setting Range | |
---|---|---|
Space Heating | Supply | 77 - 185 °F (25 - 85 °C) |
Return | 68 - 158 °F (20 - 70 °C) | |
DHW | 86 - 140 °F (30 - 60 °C) |
Navien Combination Boiler Space Heating Ratings | ||
---|---|---|
Model1 | NCB-190/080H | |
Heating Input | Min | 11,000 BTU/h (3.2 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 | |
Other Specifications | ||
Water pressure | Min | 12 PSI (0.8 kg/cm2) |
Max | 30 PSI (2.1 kg/cm2) | |
Water Connection Size (Supply, Return) | 1" |
Navien Condensing Boiler Domestic Hot Water Ratings | ||
---|---|---|
Model1 | NCB-190/080H | |
Input Ratings | Min | 10,000 BTU/h (2.9 kWh) |
Max | 160,000 BTU/h (46.9 kWh) | |
Other Domestic Hot Water Specifications | ||
Water pressure | Min | 15 PSI (1.1 kg/cm2) |
Max | 150 PSI (10.5 kg/cm2) | |
Minimum Flow Rate | 0.5 GPM (1.9 l/m) | |
Flow Rate 45 °F (25 °C) Temp Rise | 6.4 GPM (24.2 l/m) | |
DHW Connection Size (Supply, Return) | 3/4" |
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 | NCB-190/080H | |
---|---|---|
Dimensions | 17.3" W x 29.3" H x 12.8" D (43.9cm W x 74.4cm H x 32.5cm D) | |
Boiler weight | 87 lbs (39.5 kg) | |
Boiler Weight With Water | 93 lbs (42.2 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 13.5 " WC (1.99 kPa to 3.36 kPa) | |
Natural gas manifold pressure (min-max) | -0.01 " WC to -0.31 " WC (-0.0025 kPa to -0.077 kPa) | |
Propane gas manifold pressure (min-max) | -0.04 " WC to -0.33 " WC (-0.0099 kPa to -0.082 kPa) | |
Connection sizes | Gas inlet | |
Power supply | Main supply | 120V AC, 60Hz |
Maximum power consumption | Up to 15 amperes | |
Materials | Casing | Cold-rolled carbon steel |
Heat exchanger | stainless steel | |
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 |
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 | |
Vent clearances | 0" to combustibles | |
Safety Devices | Flame Rod, APS, Ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, water pressure sensor, burner | |
Temperature setting range | 86 - 140 °F (30 - 60 °C) (up to 0 °F ( °C) when setting the parameter) |
Navien reserves the right to change specifications at any time without prior notice.
NCB-190/080H FAQs
Compare NCB‑H models
![Navien NCB-190/060H condensing tankless combi-boiler](/app/W1siZiIsIjIwMjIvMDcvMjUvMTUvMzAvMTYvNTkzNDBlMDUtNmExMS00ODVmLTk2Y2EtOTAxNTE0NmUwOTAxL05DQi1ILTIwMjEucG5nIl0sWyJwIiwidGh1bWIiLCIxOTB4MzAwIl1d/NCB-H-2021.png?sha=0adf840cfb5c6372)
NCB-190/060H
![Navien NCB-190/080H condensing tankless combi-boiler](/app/W1siZiIsIjIwMjIvMDcvMjUvMTUvMzAvMTYvNTkzNDBlMDUtNmExMS00ODVmLTk2Y2EtOTAxNTE0NmUwOTAxL05DQi1ILTIwMjEucG5nIl0sWyJwIiwidGh1bWIiLCIxOTB4MzAwIl1d/NCB-H-2021.png?sha=0adf840cfb5c6372)
NCB-190/080H
![Navien NCB-240/110H condensing tankless combi-boiler](/app/W1siZiIsIjIwMjIvMDcvMjUvMTUvMzAvMTYvNTkzNDBlMDUtNmExMS00ODVmLTk2Y2EtOTAxNTE0NmUwOTAxL05DQi1ILTIwMjEucG5nIl0sWyJwIiwidGh1bWIiLCIxOTB4MzAwIl1d/NCB-H-2021.png?sha=0adf840cfb5c6372)
NCB-240/110H
![Navien NCB-240/130H condensing tankless combi-boiler](/app/W1siZiIsIjIwMjIvMDcvMjUvMTUvMzAvMTYvNTkzNDBlMDUtNmExMS00ODVmLTk2Y2EtOTAxNTE0NmUwOTAxL05DQi1ILTIwMjEucG5nIl0sWyJwIiwidGh1bWIiLCIxOTB4MzAwIl1d/NCB-H-2021.png?sha=0adf840cfb5c6372)
NCB-240/130H
![Navien NCB-250/150H condensing tankless combi-boiler](/app/W1siZiIsIjIwMjIvMDcvMjUvMTUvMzAvMTYvNTkzNDBlMDUtNmExMS00ODVmLTk2Y2EtOTAxNTE0NmUwOTAxL05DQi1ILTIwMjEucG5nIl0sWyJwIiwidGh1bWIiLCIxOTB4MzAwIl1d/NCB-H-2021.png?sha=0adf840cfb5c6372)
NCB-250/150H