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NRC661

INDOOR

OUTDOOR

NRC661


The ENERGY STAR rated NRC661, Noritz’s newest efficient condensing model with a half inch gas line. Featuring the same energy-saving condensing technology as the rest of the Noritz eco-TOUGH™ Series of gas-fired residential tankless water heaters, the NRC661 has an Energy Factor of 0.91 for natural gas and 0.93 for LP. These ratings are nearly 10 points higher than that of a comparably sized, conventional tankless unit, and approximately 30 points higher than a standard, tank-type gas-fired water heater.

With a maximum input of 120,000 BTU per hour (BTUh), using a half-inch gas line up to 120 feet in length. A new, more accurate interpretation of the National Fuel Gas Code permits the use of the smaller-diameter gas piping for inputs up to 174,000 BTUh, as long as the water column pressure at the inlet of the unit is a minimum eight inches.

Indoor

Home Size

Southern climate: 2 baths 
Northern climate: 1.5 baths

Indoor Unit Dimensions

20.5” (H) x 13.8” (W) x 6.7” (D)

Weight

Indoor: 39 lbs., Outdoor: 36 lbs.

Gas Consumption

Min: 15,000 btuh
Max: 120,000 btuh

(NG & LP)

Natural Gas/Propane

Capacity Range

0.5-6.6 Gal./min.

Energy Factor

0.91 (NG) 0.93 (LP)

Thermal Efficiency

93%

Temperature Settings

100-140°F (In 5°F intervals) (9 Options)

Outdoor

Home Size

Southern climate: 2 baths
Northern climate : 1.5 baths

Outdoor Unit Dimensions

20.5” (H) x 13.8” (W) x 6.7” (D)

Weight

Indoor: 39 lbs., Outdoor: 36 lbs.

Gas Consumption

Min. 15,000 btuh
Max. 120,000 btuh

(NG & LP)

Natural Gas/Propane

Capacity Range

0.5-6.6 Gal./min.

Energy Factor

0.91 (NG) 0.93 (LP)

Thermal Efficiency

93%

Temperature Settings

100-140°F (In 5°F intervals) (9 Options)