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Noritz – NRC661 OD Condensing Tankless Water Heater
The ENERGY STAR rated NRC661 OD, 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 OD 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.
Features:
- 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
- Venting Options: Available as an Outdoor (requires no venting) or indoor Direct Vent (‐DV) model which includes special plastic flue adapters that are compatible with both 3" Schedule 40 and 80 PVC/CPVC pipe. The DV model can be converted to a non‐direct vent (SV) model with the use of a conversion Kit (#SV‐CK‐3)
- Direct Electronic Ignition
- Energy Factor: 0.91(NG) 0.93(LP)
- Thermal Efficiency: Fully condensing, 93% efficient for use with natural gas or propane
- Temperature Controls: Includes built in display that can preset the output temperature to either 120°F, 135°F, or 140°F
- Power Cord Installation Kit: 6' power cord is included with ‐DV models only
- Safety Devices: Flame Sensor, Overheat Prevention Device, Lighting Protection Device, Freeze Protection, Condensate Overfill, Fan Rotation Detector
- Additional Features: Temperature Lockout, High Elevation Adjustment, Built‐in display window
WHAT’S INCLUDED
Your Tankless Water Heater From Heat and Cool Comes With:
- NRC661 DV | Tankless Water Heater
- Energy Guide
- Installation Manual
- Owners Guide
- Parts List
- Technical Specification
Downloads
Key Specifications
- Noritz
- Yes
- 5.8 gpm
- 5.3 gpm
- 2.9 gpm
- 6.6 gpm
- Yes
- Indoor
- 140 ºF
- 0.5 gpm
- Standard
- 138 W
System Specifications
| Case | Steel |
|---|---|
| Direct Electronic Ignition | Yes |
| Energy Star | Yes |
| Finish Family | Beige |
| Flow Rate @ 35 ºF Rise | 5.8 gpm |
| Flow Rate @ 45 ºF Rise | 5.3 gpm |
| Flow Rate @ 75 ºF Rise | 2.9 gpm |
| Flow Rate, Maximum | 6.6 gpm |
| Hard-Wired Remote | Yes |
| Heat Exchanger Warranty | 15 Year year |
| Indoor/Outdoor | Indoor |
| Labor Warranty | 1 Year |
| Lightning Protection | Yes |
| Maximum Temperature | 140 ºF |
| Min. Installation Clearance, Front | 24 Inch |
| Min. Installation Clearance, Sides | 6 Inch in |
| Min. Installation Clearance, Top | 36 Inch in |
| Minimum Activation Rate | 0.5 gpm |
| Must ship freight | Yes |
| Parts Warranty | 5 Year Limited Parts Warranty |
| Product Depth | 6.7 in |
| Product Height | 20.5 in |
| Product Shipping Weight | 39 lb |
| Product Width | 13.13 in |
| Recirculation compatible | Yes |
| Shipping Cost | 140 |
| Shipping Time | 7 to 10 days |
| Thermal Efficiency | 0.92 % |
| Unit Type (Selector) | Standard |
| Warranty | 15 Year Limited Heat Exchange year |
| Water Connection Location | Top |
| Water Connection Size | 3/4 Inch in |
| Water Pressure Range, Min-Max | 15-150 psig |
| Wattage | 138 W |