Noritz NRC661-OD-NG 120,000 BTU, 6.6 GPM Residential Outdoor Condensing Front Exhaust Natural Gas Tankless Water Heater

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 comparable 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 ft. 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.

• Standard input - gas consumption ranges from 15,000 BTUh to 120,000 BTUh
• Capacity range - flow rates from 0.5 GPM up to 6.6 GPM
• Compact design- ANSI Z21.10.3/CSA 4.3 certified design that can be wall-mounted outdoors
• Durable steel casing with polyester coating
• Temperature controls - includes built in display that can preset the output temperature to either 120°F, 135°F, or 140°F
• Cold water connection size (in) 3/4
• Hot water connection size (in) 3/4
• Gas connection size (in) 1/2
• Power supply 120 VAC (60Hz)
• Exhaust vent material requirements PVC or CPVC