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Noritz has expanded its line of combination boilers with the new Noritz Residential Combination Boiler (NRCB), which allows for simultaneous domestic hot water and space heating—a first in the industry— and performs at a 95 percent AFUE (Annual Fuel Utilization Efficiency).
Its fuel-saving performance allows the NRCB to meet “Energy Star Most Efficient” standards, which represent the U.S. Environmental Protection Agency’s highest efficiency rating. This, combined with an Air-Conditioning, Heating and Refrigeration Institute (AHRI) certification, qualifies homeowners for various state energy rebates.
Unlike traditional combination boiling systems, which can provide only space heating or hot water at any given time, the NRCB’s simultaneous capabilities are easy to control and especially beneficial for applications that do not store or deliver heat energy efficiently.
“The first-of-its-kind NRCB will change the way consumers utilize wall-hung combination boilers in North America,” says Jason Fleming, VP of sales and marketing for Noritz. “We’re excited to see how the market reacts to this groundbreaking technology.”
Another industry first is the NRCB’s use of 316L copper primary and secondary heat exchangers, which have higher corrosion resistance than traditional heat exchangers, resulting in increased durability and a longer lifespan. A third flat plate heat exchanger for domestic water heating is made of stainless steel.
The NRCB is available in two models:
The NRCB180DV has a maximum gas input Btuh of 180,000 for hot water and 100,000 Btuh for space heating. Its maximum flow rate is 9.8 gallons per minute (gpm).
The NRCB199DV has a maximum gas input Btuh of 199,000 for hot water and 120,000 Btuh for space heating. Its maximum flow rate is 11.1 gpm.
On the space heating side, the NRCB has a temperature range of 80°F to 180°F (27°C to 82°C); on the domestic hot water side, the range is 90°F to 140°F (32°C to 60°C). With flow rates ranging from 9.8 gpm to 11.1 gpm, the NRCB provides nearly twice as much flow as competitor models. Furthermore, a flow control valve—not offered by competitors—ensures a consistent temperature for domestic hot water demand, regardless of incoming water temperature. This allows for greater domestic hot water flow and more precise temperature stability, translating to a higher level of customer satisfaction.
In addition, the NRCB includes a number of installer- and user-friendly features, such as:
The NRCB became available for shipment to Noritz distributors beginning in September 2017 and will include a 10-year warranty on heat exchangers, a five-year warranty on parts, and one year on reasonable labor.
