NRC661

NRC661

Technical Specifications

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

• 39 lbs

Gas Consumption

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

(NG & LP)

• Natural Gas/Propane

Capacity Range

• 0.5 – 6.6 GPM

Uniform Energy Factor

• 0.89 (UEF)

Temperature Settings

100-140° F (in 5° F Intervals), 9 options

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.