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Summer Sale Navien Ncb-250/150h Indoor High Efficiency Condensing Combi-boiler - Ends Soon [FwEP6y1Z]
The Summer Sale Navien Ncb-250/150h Indoor High Efficiency Condensing Combi-boiler - Ends Soon [FwEP6y1Z] is a powerful and compact solution for homeowners looking to combine space heating and on-demand hot water in a single, efficient unit. This wall-hung, indoor boiler measures 17.3
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Summer Sale Navien Ncb-250/150h Indoor High Efficiency Condensing Combi-boiler - Ends Soon [FwEP6y1Z]
The Summer Sale Navien Ncb-250/150h Indoor High Efficiency Condensing Combi-boiler - Ends Soon [FwEP6y1Z] is a powerful and compact solution for homeowners looking to combine space heating and on-demand hot water in a single, efficient unit. This wall-hung, indoor boiler measures 17.3 inches wide by 29.3 inches high by 12.8 inches deep, making it an excellent option for homes where space is limited. Designed for versatility, it operates on both natural gas and propane, and supports multiple venting options, including PVC, CPVC, polypropylene, and stainless steel. Its durable stainless steel heat exchanger ensures long-lasting performance, while the electronic ignition system offers reliable, energy-efficient operation year-round.
Engineered with advanced safety features, the Navien NCB-250/150H includes a flame rod, ignition operation detector, high-limit switches for both water and exhaust temperatures, and a water pressure sensor to maintain safe and consistent performance. It operates within a temperature range of 86 to 140 degrees Fahrenheit, delivering reliable comfort in any season. With a 0-inch clearance to combustibles and forced draft direct venting, this high-efficiency condensing combi-boiler is easy to install in tight indoor spaces. If you're searching for a dependable, energy-efficient, and space-saving boiler for your home, the Navien NCB-250/150H is a smart, modern choice.
Features:
- Smart controls LCD display, quick dial wheel & Setup Wizard
- Advanced stainless steel dual heat exchangers
- 15:1 DHW and up to 5.5:1 heating TDR
- Field convertible gas system (NG/LP) up to 10,100 ft.
- Capable of cascading up to 15 NPE water heaters
- Capable of common venting up to 7 NPE water heaters
- Built-in 3 zone pumps and 3 zone valves powered connections
- 2” venting up to 65' and 3” venting up to 150'
Dimensions:
-
17.3" W x 29.3" H x 12.8" D (43.9cm W x 74.4cm H x 32.5cm D)
DHW Flow Rates:
| DWH Temp Rise | NCB-250/150H |
|---|---|
| 35 °F (19.4 °C) rate | 10.8 GPM (40.9 l/m) |
| 40 °F (22.2 °C) rate | 9.5 GPM (36 l/m) |
| 45 °F (25 °C) rate | 8.4 GPM (31.8 l/m) |
| 50 °F (27.8 °C) rate | 7.6 GPM (28.8 l/m) |
| 55 °F (30.6 °C) rate | 6.9 GPM (26.1 l/m) |
| 60 °F (33.3 °C) rate | 6.3 GPM (23.8 l/m) |
| 67 °F (37.2 °C) rate | 5.6 GPM (21.2 l/m) |
| 70 °F (38.9 °C) rate | 5.4 GPM (20.4 l/m) |
| 77 °F (42.8 °C) rate | 4.9 GPM (18.5 l/m) |
| 80 °F (44.4 °C) rate | 4.7 GPM (17.8 l/m) |
| 85 °F (47.2 °C) rate | 4.4 GPM (16.7 l/m) |
| 90 °F (50 °C) rate | 4.2 GPM (15.9 l/m) |
| 100 °F (55.6 °C) rate | 3.8 GPM (14.4 l/m) |
Gas Input Ranges:
| Model | NCB-250/150H |
|---|---|
| Heating | 14,000 - 150,000 BTU/h (4.1 - 43.95 kWh) |
| DHW | 14,000 - 210,000 BTU/h (4.1 - 61.53 kWh) |
Specifications:
| Item | NCB-250/150H | |
|---|---|---|
| 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 | 96 lbs (43.5 kg) | |
| Boiler Weight With Water | 102 lbs (46.3 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 13.5 " WC (1.99 kPa to 3.36 kPa) | |
| Natural gas manifold pressure (min-max) | -0.06 " WC to -0.26 " WC (-0.015 kPa to -0.065 kPa) | |
| Propane gas manifold pressure (min-max) | -0.06 " WC to -0.28 " WC (-0.015 kPa to -0.07 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) | |
| Normal | 100 W | |
| Standby | 4 W | |
| Anti-frost | 114 W | |
| External pump | < 150 W, 1.5 A W | |
| Fuse | 5.0 A | |
| Materials | Casing | Cold rolled carbon steel |
| Heat exchangers |
Stainless steel |
|
| Safety Devices | Flame rod, APS, VID (vent installation detector), ignition operation detector, water temperature high limit switch, power surge fuse | |
Warranty:
| Product | Labor | Parts | Heat Exchanger |
|---|---|---|---|
|
NCB-H (Residential) |
1 Year | 5 Years | 10 Years |
Videos:
FAQ:
1)What is a combi-boiler?
A combi (combination) boiler is designed to heat a building, using hot water (similar to a boiler), but also includes the components and controls to internally heat the domestic hot water (DHW) required in the application. By having both heating and hot water in one unit, the combi will save space in the mechanical room and also save on the initial installation compared to separate appliances.
2)How does a combi-boiler work?
A combi (combination) boiler provides both space heating and on demand domestic hot water. In heating mode, water from the space heating system will flow through the heat exchanger and out to the system similar to a standard boiler. When a domestic hot water demand (open faucet) occurs, water flows through a separate heat exchanger in the combi, and a valve inside the unit diverts heating water over to the DHW heat exchanger. Space heating water is used to heat the domestic hot water until the demand ends. At the end of the domestic demand, the combi will switch back to supply space heating.
3)What's the benefit of choosing a combi-boiler?
Since the combi boiler provides both space heating and domestic hot water all in one unit, it can provide space savings over two or more units. Combi boilers also can provide endless hot water in DHW mode, similar to a tankless water heater. Combi boilers may also reduce the installation cost by reducing the number of appliances, possibly reducing the number of wall or roof penetrations required for exhaust and intake piping, and may reduce some of the gas piping requirements.
4)Does a combi-boiler require special installation?
Combi-boilers do not require any additional requirements, compared to a condensing boiler and water heater. Compared to installing two different appliances, the installation may even have fewer requirements.
What Our Customers Say
Absolutely no complaints!
It's a very well-made product, great quality and very well-made.
- Ivey G..
Absolutely no complaints!
It's a beautifully crafted object that performs perfectly.
- Craft_Collector.
Absolutely no complaints!
It's a well-rounded and excellent item.
- Ezra E..
