A review of Noritz NRC series of tankless and condensing water heaters including the top features, specs and benefits. The NRC series is coming from the ecoTOUGH group which is great for both small and large houses with up to 4-bath homes and homes with the high hot water demand.
As the Noritz NRC models are designed as condensing tankless water heaters, they are able to use the residual heat from the flue gases and preheat the cold incoming water, increasing the energy efficiency to high 95%. Noritz NRC water heaters are designed to operate not only with the great performance and efficiency, but provide lower greenhouse gases, savings on utility bills and government grants as the Energy Star recognized units. Except the residential use, water heaters can also be used in commercial applications; offices, mechanic shops, small restaurants, schools...
Noritz water heaters from NRC111 series are designed for the outdoor installation (model NRC111-OD) and indoor installation as the direct vent (model NRC111-DV).
In both cases water heaters use either natural gas or propane (LP) gas for residential water heating. These models, with the high water flow of up to 11.1 GPM, can easily meet high hot water demand of large homes with up to 4 baths, and also multiple applications. And with the Quick-Connect feature, two models can be connected into one system to double the capacity. The remote controller comes with the units.
Noritz NRC663-FSV is also known as the model EZTR40. This is a small and lightweight condensing unit that comes with the maximum gas input of 120,000 Btuh and water flow of 6.6 GMP, making it great for efficient whole house water heating in smaller homes.
The EZTR40 model is used for indoor installations only and it uses the N-Flex kit for the installation inside of B-vent - no need to change an existing vent. Its ability to use the existing B-vent, top mount water connections and half inch gas connection allows the homeowners easy replacement of an existing 40-gal and 50-gal tank-type water heaters.
Some models, such as the Noritz NRC111, are equipped with two heat exchangers, primary made of the thick, commercial-grade copper and secondary made of durable stainless steel, both resistant to the high thermal and mechanical stress, including the corrosion.
As the NRC series utilizes the condensing technology which results in the lower exhaust temperatures, the manufacturer recommends, instead of the stainless steel venting, cheaper PVC and CPVC vents.
Best models such as those from the NRC111 series utilize dual flame burners for the maximum heating output and less temperature fluctuation. The modulating gas valve automatically adjusts the gas burner output so the power can go from its minimum of 16,000 Btu/hr to its maximum of 199,900 Btu/hr. Such a power adjustment provides cleaner gas combustion, savings and longer operation.
Quick Connect cable allows some NRC units to provide twice the hot water capacity of one unit. For even more power and water flow, multi-system can be used, as up to 24 units can be linked and operated by a single controller.
As other Noritz tankless water heaters, NRC models are not using the pilot light, but direct electronic ignition that automatically lights the burner.
Noritz condensing water heaters are versatile as they are not used for heating the potable water only, but for space heating too, due to its combi-system design.
The remote control, which is included in the shipment, is very simple and functional. It includes the setting buttons and digital display so the homeowner can easily see the operating status, temperature, and the error code when the problem occurs.
The self-diagnostic system helps in troubleshooting as it shows the error code, such as 11, 29, 90, 92, 99 on the remote control display.
Noritz NRC series, as it can be see from above short review are ultra-efficient models that are used in a variety of applications.
The Noritz NRC111 model is the most advanced and powerful tankless water heater from this group that has an ultra high efficiency for the Energy Star approval, comes with the greatest flow rate and it also saves the energy, produces less NOx gases and has a lower impact on the environment.
Pictures - courtesy of Noritz company