Rinnai R94LSI, R98LSI-ASME, R75LSI, R50LSI Technical Data, Pressure Drop Curve, Outlet Flow Data

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Technical Data

Pressure Drop Curve

	45						100
							100
	40						90
							90
	35				R94LSi		R98LSi
	35						80	PressureLossLoss(ft head)(ft head)
Pressure Loss (psi)	30			R75LSi			70
				R75LSi
	25						60
	25		R50LSi
			R50LSi				50
	20						50
	20
	15						40
	15						30
							30
	10
	10						20
							20
	5						10
							10
	0						0
	0	2	4	6	8	10	12

Water Flow (gpm)

Outlet Flow Data

	10.0	R98LSi
	10.0
	9.0	R94LSi
		R94LSi
	8.0
(gpm)	7.0	R75LSi
		R75LSi
	6.0
Flow	6.0
Flow	5.0
Water	5.0
	4.0	R50LSi
	4.0

	3.0
	2.0
	1.0
	0.0
	0	25	50	75	100	125	150

delta T - Temperature Rise (ºF)

38	VA Series Indoor LS Manual

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Contents REU-VA3237FFU ANS Z21.10.3 CSATable of Contents Specifications R50LSi R75LSi R94LSi R98LSiSafety Behavior and Practices Safety Features Consumer Safety InformationSafety Definitions Description of Operation Features Available on Temperature ControllersFeatures Operating InstructionsTemperature Controllers Models MC-91-1US & MCC-91-1USBC-100V-1US Setting the Temperature Temperature Options Without a Temperature ControllerModel Temperature Settings Available ºF Temperature RangesSetting the Sound Volume Voice Prompt MCC-91 Temperature ControllerOverview Using the Water Smart / Bath Fill FunctionSetting the Water Volume Filling the Tub Setting Controller to MuteSetting the Clock Models MC-91 and MCC-91Maintenance Error Codes Code Fault RemedyCode Water Quality Trouble Shooting for Common IssuesAccessing Operating Information Flushing the Heat Exchanger Error Code LC or Circulating PumpInstallation Instructions General InstructionsClearances from Appliance Attachment of the Water HeaterGeneral Instructions Electrical ConnectionGas Piping Pipe Sizing Procedure Example Freeze Protection Water PipingPressure Relief Valve Freeze Protection Piping Rinnai Water HeaterRecommended Piping for Basic Installation Rinnai Water HeaterRecommended Piping for Circulation Systems For this applicationOptional Piping for Circulation Systems For this applicationCondensate Venting InstructionsIntake / Exhaust Guidelines Maximum Vent Length Vent Products Manufacturer Product PartsVent Terminal Area Where Terminal is not Permittted Flue Terminal Clearances ANS Z21.10.3 CSAAdditional Clearances Vent Terminal Flue Installation Concentric Venting R50LSi, R75LSi, R85LSi Exhaust Pipe Assembly Flue Installation R98LSi, R98LSi-ASMEAir Intake Assembly Venting Clearances to CombustiblesHorizontal with Concentric Termination Vertical TerminationsNumber of Connected Water Heaters Accessories Necessary High Altitude InstallationsConnecting Multiple Water Heaters GuidelinesLocation Temperature Controller InstallationConfigurations Cable Lengths and SizeMounting the Controller Outline of RemoteFor Your Safety Read Before Operating Operating InstructionsOutlet Flow Data Technical DataPressure Drop Curve Space Heating Temperature SettingReplacement PumpsDimensions R50LSi, R75LSi, R94LSi R98LSi, R98LSi-ASMELadder Diagram HOTConsumer Support Warranty InformationLimited Warranty What will Rinnai do? Rinnai’s other fine products

R50LSI, R94LSI, R75LSI, R98LSI-ASME, R98LSI specifications

The Rinnai R50LSI, R75LSI, R94LSI, R98LSI, and R98LSI-ASME are high-efficiency tankless water heaters designed for residential and commercial applications. Each model in this line-up boasts unique features and technologies that cater to varying hot water needs while emphasizing energy efficiency and reliability.

The R50LSI is the most compact option in the lineup, providing up to 5.1 gallons per minute (GPM) of hot water at a 35°F rise in temperature. It is an ideal choice for smaller households or apartments where space is a premium. It operates using a direct vent system, ensuring safe exhaust of combustion gases outside the home. The R75SLI, with a maximum output of 7.5 GPM, is suited for needs such as multiple showers running simultaneously, making it perfect for medium-sized homes.

Moving on to the R94LSI and R98LSI, these models provide even greater capacity and efficiency. The R94LSI offers an impressive 9.4 GPM flow rate, while the R98LSI reaches a peak of 9.8 GPM, supporting larger family requirements and ensuring hot water availability for multiple applications concurrently. Both models incorporate Rinnai’s advanced Circ-Logic technology, which allows users to set schedules for recirculating hot water, minimizing wait time and enhancing convenience.

For commercial applications, the R98LSI-ASME is a specialized model that includes the American Society of Mechanical Engineers (ASME) certification. This makes it suitable for larger facilities, such as restaurants, schools, and other institutions that demand a robust and efficient solution for comprehensive hot water needs.

All these models feature a user-friendly digital controller, enabling easy temperature adjustments and real-time monitoring. Moreover, their compact design means they can be installed in various locations, saving valuable space. The Rinnai tankless water heaters utilize a highly efficient condensing technology, resulting in a lower carbon footprint and reduced energy costs.

With a robust warranty program and the reliability that Rinnai is known for, the R50LSI, R75LSI, R94LSI, R98LSI, and R98LSI-ASME embody the pinnacle of water heating technology. These models not only provide the convenience of on-demand hot water but also contribute to energy conservation, making them an excellent choice for environmentally conscious consumers.