NCB-H offers industry leading DHW features including the highest maximum BTU/h for DHW (210,000), highest flow rate of 5.4 GPM at 70° rise and a DHW turndown ratio of 15:1.
Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.
| Item | NCB-240/130H | |
|---|---|---|
| Dimensions | 43.9cm W x 74.4cm H x 32.5cm D (17.3″ W x 29.3″ H x 12.8″ D) | |
| Boiler weight | 43.5 kg (96 lbs) | |
| Boiler Weight With Water | 46.3 kg (102 lbs) | |
| 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 | |
| Propane gas supply pressure (from source) | 8 ” WC to 13.5 ” WC | |
| Natural gas manifold pressure (min-max) | -0.06 ” WC to -0.24 ” WC | |
| Propane gas manifold pressure (min-max) | -0.06 ” WC to -0.26 ” WC | |
| 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 | 30 – 60 °C (86 – 140 °F) (up to °C (0 °F) when setting the parameter) | |
