Description
The Navien NCB-190/060H High-Efficiency Condensing Combi-Boiler is a compact, wall-hung solution that delivers premium performance for both home heating and domestic hot water. Designed for indoor installation, this forced draft direct vent system features advanced electronic ignition, stainless steel heat exchangers, and intelligent safety devices including a flame rod, vent installation detector (VID), and high-limit sensors. With dimensions of 17.3" W x 29.3" H x 12.8" D and a lightweight build of just 87 lbs (93 lbs with water), it’s perfect for space-saving installations. The unit supports both natural gas and propane, with wide gas supply pressure ranges for enhanced compatibility and reliable operation.
Optimized for high efficiency and user safety, the NCB-190/060H boasts a temperature setting range from 86 to 140 °F (30 to 60 °C), anti-frost protection, and venting options compatible with 2" or 3" PVC, CPVC, polypropylene, or stainless steel. The stainless steel heat exchanger ensures durability and corrosion resistance, while cold-rolled carbon steel casing enhances longevity. Ideal for modern homes seeking reliable and energy-efficient heating, this combi-boiler offers seamless operation with a maximum power consumption of 15 amps and easy integration with external pumps. Whether you're upgrading or building new, this Navien model delivers unmatched efficiency and peace of mind.
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-190/060H |
---|---|
35 °F (19.4 °C) rate | 8.3 GPM (31.4 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) |
Gas Input Ranges:
Model | NCB-190/060H |
---|---|
Heating | 11,000 - 60,000 BTU/h (3.22 - 17.58 kWh) |
DHW | 10,000 - 160,000 BTU/h (2.93 - 46.88 kWh) |
Specifications:
Item | NCB-190/060H | |
---|---|---|
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) | |
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.
Order Confirmation:
Upon placing your order, you will promptly receive an email confirmation. Subsequently, we will conduct a thorough inventory check to ensure all items are in stock and available for immediate shipment. If your order aligns with the advertised delivery timeframe, we will promptly process it for shipment to our warehouse. In cases where the expected delivery time extends beyond the advertised timeframe, we will reach out to you via email and/or phone for confirmation.
Order Shipment:
Within one business day of your item being shipped, you will receive an email confirmation containing a tracking number. If you do not receive tracking information within six business days of placing your order, please don't hesitate to get in touch with us for assistance.
Estimated Time of Arrival:
Our typical delivery timeframe ranges from 2 to 10 business days. Custom-made products generally require 3 to 5 weeks for delivery. If the expected delivery date for your order would fall outside of the advertised 2-10 business day time frame, our customer service team will contact you to ensure your agreement with the revised timeline.
Covered Areas:
Please note that all estimated delivery dates and shipping costs advertised on our website apply exclusively to the Contiguous United States. For inquiries regarding shipping to Hawaii or Alaska, kindly reach out to our customer service team. While we do not offer direct shipping to Canada, we are more than willing to ship your order to the freight carrier of your choice.
Damages:
It is very important that you inspect the packaging of your items when they arrive and check if you received all boxes listed on the delivery receipt. If you notice any damage or shortage of packages, you must make note of it on the bill of lading, take pictures, and refuse delivery. Your note should say "refused due to damage". You must also take photos of all sides of the box and send them to us within 2 days. If there are no damages visible before opening the box, you must note "subject to further inspection may contain concealed damage". If you notice any damage after receiving the delivery, do not throw the box away, and contact us with the photos. After we receive information from you about the refused delivery or concealed damage, we immediately initiate a claim with the shipping company or with the manufacturer. After the claim is fully processed, we ship all replacements at absolutely no cost to you.
Cancellations & Refunds:
We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders. Please note that custom-made items are not eligible for refunds once production has begun. To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section. Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund. Prior to returning an item, please contact us to discuss shipping details. All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.
Please contact sales@belleflame.com for any questions regarding shipping time.
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