

Spec Sheet Install Manual
Features
- ENERGY STAR® Qualified - Energy Factor up to .93
- The RUCS65i, with a maximum of 130,000 BTU, can deliver 6.5 GPM of hot water
- Built-in status monitor; easily upgradable to MC-91-2 controller for remote operation
- Temperature Range of 120°F - 140°F, with four convenient pre-set temperatures
- Stylish white cabinet and matching cover panel
- Quiet Operation: RUCS65 @ 47dB
- High Altitude Approved up to 5,400 feet
- Ultra Low NOx Compliant
- Built-in freeze protection down to -22°F for indoor models and -4°F for outdoor models (gas/electricity required)
- Mobile Home Certified
- Fuel conversion kits available
Isolation Valves Sold Seperately or in Combination
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The Rinnai RUCS65iP requires isolation valves during installation. This valve kit includes hot and cold water shut-off valves, hot and cold water drain valves, and an ANSI approved pressure relief valve. Use of these valves will allow flushing of the heat exchanger and aid in servicing and troubleshooting of your Rinnai. You can purchase them with your water heater above or separately.
Specifications
Dimensions | Width: 18.5 inches (469.9 mm) |
Height: 26 inches (660.4 mm) | |
Depth: 10 inches (254 mm) | |
Weight | 57.3 lbs (26 kg) |
Installation Type | Indoor |
Minimum/Maximum BTU | 10,300 / 130,000 and Propane |
Energy Factor | 0.93 for Propane |
Temperature Range | Residential Only: 120°F - 140°F (49°C - 60°C) |
Minimum Activation Rate | 0.4 gpm (1.5 lpm) |
Flow Rate (70° / 50° Temperature Rise) | 3.4 / 4.8 gpm (12.9 / 18.1 lpm) |
Hot Water Flow Rate Range | 0.26 - 6.5 gpm (0.98 - 24.6 lpm) |
Controllers | Standard: Status Monitor |
Optional: MC-91-2US | |
Ultra Low NOx | Yes |
Warranty (Residential)* | Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor |
Warranty (Commercial)* | Residential only |
Mobile Home Certified | Yes |
Valves Shipped in Box | No |
High Altitude Approved | Up to 5,400 ft. (1,646 m) |
Certifications | AHRI, CSA, Energy Star® |
Venting Options | Concentric or PVC / CPVC |
Tankless Rack System (TRS/TRW) Compatible | No |
1/2" Gas Line Compatible*** | Yes |
* It is recommended that a trained and qualified professional who has attended a Rinnai training class complete the installation. The warranty may be voided due to any improper installation.
— Installation and service must be performed by a licensed professional.
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