Condensing Boilers
A condensing boiler is a type of heating system that’s really good at using energy efficiently. Imagine your regular boiler as a chef cooking a meal on the stove. After cooking, there’s a lot of steam that usually just goes up and disappears. That’s like the heat in a regular boiler—it goes away and isn’t used.
Now, picture a chef who’s really smart and catches that steam, turns it back into water, and uses it to cook more food. That’s what a condensing boiler does with the heat from burning gas or other fuels. It grabs the heat that would normally escape and uses it to warm up your home or your water again. It’s like getting extra use out of the heat, which saves energy and money on your bills.
Condensing Boilers are typically used to heat floors, home water systems and radiators.
Combi-Boilers
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.
Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency heating up to 150 BTU’s Per Hour/.
Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.
Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.
Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.
The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.
For increased domestic hot water flow demand, the NCB-H
can be cascaded and common vented with up to 15 of our NPE tankless water heaters.
New NFC-H highest heating and DHW performance ever built into one compact combi-boiler
Navien innovation, durability and proved fire tube technology has done it again. The new NFC-H has more heating and DHW capacities for today’s larger progressive homes. Navien continues to reinvent smarter ways to bring high efficiency home comfort to your customers. Also Navien continues to make installation and set-up easier for contractors.
Satisfies all the space heating and domestic hot water requirements of most typical large homes.
Navien’s sleek wall-hung combi-boilers occupy 80% less space than traditional floor standing boilers and tank water heaters.
Dual Venturi system creates better combustion control and turndown ratio. Field gas convertibility is easy with orifice conversion kits for NG high altitude (5,400–10,100 ft.) and LP (up to 10,100 ft.) included with NFC-H Series combi-boilers
All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.
Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NFC-H combi-boilers.
The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.
Navien’s advanced patented stainless steel heat exchanger design is ASME‑Certified,
“H” Stamped, and reduces high stress point weld failures common on other combi-boilers.
This compact, in‑house designed and manufactured heat exchanger uses the latest automated laser welding technology to deliver superior product quality.
Navien’s new innovative domestic hot water heat exchanger now generates even more hot water, giving customers the ability to run up to 3 showers and a dishwasher, all at the same time with 5.4 gallons per minute at a 67°F temperature rise.
Navien’s new backlit control panel is simple and intuitive to use with its plain text display and an innovative click wheel that improves usability for all information input
With Navien’s new PCB design you now have the ability to connect 3 zone pumps.
Regular Condensing Boilers
Navien keeps raising the barhigher and higher in fire tube boiler innovations
We totally reinvented fire tube technology from the ground up and we continue to advance our boiler technology to a higher level with the new NFB-H boiler series.
- Patented stainless steel fire tube heat exchanger—reduces high stress point welds
- Advanced user interface with intuitive text display and Quick Dial Wheel for easy navigation
- Smart controls with Setup Wizard to simplify boiler start up
- Built-in 3 zone pumps or 3 zone valves powered connections
- Optional NaviLink Wi-Fi remote control
- Common venting up to 8 boilers
- Cascading up to 16 boilers
- Up to 15:1 turndown ratio
- AFUE 95.0%—Energy Star certified
- Compact, light weight, wall hung design saves space over traditional floor standing boilers
Navien innovation in a compact wall-hung condensing boiler
As the leader in condensing technology, Navien has already reinvented the water heating industry with the award-winning NPE tankless water heaters and the NCB combi-boilers. The new NHB boiler series is the next in line of innovations from Navien. All NHB boilers have Navien’s advanced burner system, an industry-leading AFUE of 95% and turn down ratios up to 15:1.
Now available in four sizes NHB 55, NHB 80, NHB 110 and NHB 150.NHB Integrated control
The integrated control provides industry leading options and features in the boiler operation parameters, including:
- Adjustable heat capacity.
- A timed hydronic supply water boost feature.
- Adjustable anti-cycle timer.
- Freeze protection.
- Pressure LWCO with manual reset.
- Adjustable minimum burner time setting.
- Adjustable turn down ratio timing.
- Outdoor reset and domestic hot water priority.
- Adjustable outdoor temperature reset curves.
- Field gas convertible.
