Spec Sheet Install Manual

Super High Efficiency 6.5 GPM 130,000 BTU Natural Gas Interior Tankless Water Heater

Enjoy an endless supply of hot water with the RUCS65iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS65iN is compact, easy-to-install and perfect for indoor locations.

Rinnai Ultra Series Tankless Water Heaters deliver innovation and technological leadership in condensing tankless water heating design, while providing homeowners with an endless supply of hot water, energy savings, a space-saving design and environmental benefits. The NEW RUCS65i at 130,000 BTUs, available in natural gas and propane, offers condensing technology with lower capacity at attractive price points. As the only manufacturer to offer both concentric and PVC/CPVC dual pipe venting options on the same unit, the RUCS models join the Ultra Series lineup of innovative designs and enduring values.

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 combo)

Jomar Tankless Water Heater Valves 810-504G

The Rinnai RUCS65iN 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 Natural Gas
Energy Factor	0.93 for Natural Gas
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
Controllers	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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