Rinnai R50LSI, R98LSI High Altitude Installations, Connecting Multiple Water Heaters, Guidelines

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High Altitude Installations

Set dip switches 2 and 3 to the values shown in table below for your altitude. The default setting for the appliance is 0-2000 ft (0-610 m) with switches No. 2 and No. 3 in the OFF position.

		0-2000 ft						2001-5200 ft									5201-7700 ft									7701-10200 ft
		(0-610 m)						(610-1585 m)									(1585-2347 m)									(2347-3109 m)

Switch No. 2				OFF							OFF									ON										ON

Switch No. 3				OFF							ON									OFF										ON


		Switch No.							Switch No.									Switch No.									Switch No.
					ON							ON									ON										ON
		O			ON				O			ON						O			ON						O				ON
		O				1			O						1			O						1			O						1
		F				2			F						2			F						2			F						2
		F							F									F									F
		F							F									F									F
						3									3									3									3
						3									3									3									3
						4									4									4									4
						4									4									4									4
						5									5									5									5
						5									5									5									5
						6									6									6									6
						6									6									6									6
						7									7									7									7
						7									7									7									7
						8									8									8									8
						8									8									8									8

Connecting Multiple Water Heaters

The EZConnect™ cable is an optional accessory that connects 2 water heaters and allows them to function as one hot water source.

The MSA-2M and MSA-2S packs are optional accessories that connect 2 to 5 water heaters and allow them to function as one hot water source.

Refer to the instructions that come with the accessory for complete installation information.

Guidelines

•Do not install both the EZConnect™ and the MSA packs because they are not designed to operate together.

•Water heaters connected with the EZConnect™ Cable or the MSA-2M and MSA-2S packs cannot be used for the bath fill function.

•Water heaters should be installed less than 18 inches apart so that the cables will reach between units and to prevent temperature fluctuations (cold water sandwich effect) when the water is shut off and turned back on.

•Temperature settings can only be changed on the controller for the primary unit.

	Number of Connected Water Heaters:		Accessories Necessary:

	2		(1) EZConnect™ Cable or (1) MSA-2M

	3		(1) MSA-2M and (1) MSA-2S

	4		(1) MSA-2M and (2) MSA-2S

	5		(1) MSA-2M and (3) MSA-2S

34		VA Series Indoor LS Manual

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Contents REU-VA3237FFU ANS Z21.10.3 CSATable of Contents Specifications R50LSi R75LSi R94LSi R98LSiSafety Definitions Consumer Safety InformationSafety Behavior and Practices Safety Features 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 ControllerSetting the Water Volume Using the Water Smart / Bath Fill FunctionOverview Filling the Tub Setting Controller to MuteSetting the Clock Models MC-91 and MCC-91Maintenance Error Codes Code Fault RemedyCode Accessing Operating Information Trouble Shooting for Common IssuesWater Quality Flushing the Heat Exchanger Error Code LC or Circulating PumpInstallation Instructions General InstructionsClearances from Appliance Attachment of the Water HeaterGas Piping Electrical ConnectionGeneral Instructions Pipe Sizing Procedure Example Pressure Relief Valve Water PipingFreeze Protection 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 applicationIntake / Exhaust Guidelines Venting InstructionsCondensate 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 InstructionsPressure Drop Curve Technical DataOutlet Flow Data Space Heating Temperature SettingReplacement PumpsDimensions R50LSi, R75LSi, R94LSi R98LSi, R98LSi-ASMELadder Diagram HOTLimited Warranty Warranty InformationConsumer Support 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.