Rinnai R75LSI, R98LSI-ASME, R94LSI, R50LSI installation manual Table of Contents

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REU-VA3237FFU-ASMEThis model has been built in accordance with the requirements of the ASME Boiler and Pressure Vessel Code and has received the Certificate of Authorization from the National Board. The heat exchanger on this unit has the NB and HLW stamps.

Table of Contents

Specifications

3

Installation Instructions

17

 

 

 

Consumer Safety Information

 

 

General Instructions

17

Safety Definitions

4

Clearances from Appliance

18

Safety Behaviors and Practices

4

Attachment of the Water Heater

18

Safety Features

4

Electrical Connection

19

 

 

 

Gas Piping

 

Description of Operation

5

General Instructions

19

Operating Instructions

 

 

Pipe Sizing Procedure - Example

20

 

 

Water Piping

 

Features Available........................................................on Temperature

5

General Instructions

21

Controllers

 

Pressure Relief Valve

21

Temperature Controllers - Models

6, 7

Freeze Protection

21

Setting the Temperature

8

Freeze Protection Piping

22

Temperature Options Without

8

Recommended Piping for Basic Installation 23..

a Temperature Controller

 

Recommended Piping for

 

Temperature Ranges

9

Circulation Systems

24

Setting the Sound Volume

9

Optional Piping for Circulation Systems

25

Setting the Clock

9

Venting Instructions

 

Using the Water Smart Bath Fill Function

......10

Intake / Exhaust Guidelines

26

Overview

10

Condensate

26

Setting the Water Volume

10

Maximum Vent Length

27

Filling the Tub

11

Vent Products

28

Setting Controller to Mute

11

Flue Terminal Clearances

 

Maintenance

 

 

(ANS Z21.10.3 ● CSA 4.3)

29

Cleaning

12

Additional Clearances

30

Vent System

12

Flue Installation - Concentric Venting

 

Motors

12

(R50LSi, R75LSi, R85LSi)

31

Temperature Controller

12

Flue Installation

 

Lime / Scale Buildup

12

(R98LSi, R98LSi-ASME)

32, 33

Snow Accumulation

12

High Altitude Installation

34

Visual Inspection of Flame

12

Connecting Multiple Water Heaters

34

Error Codes

 

Temperature Controller Installation

 

13,14

Location

35

Error Code Table

 

Configurations

35

Trouble Shooting for Common Issues

15

Cable Lengths and Size

35

Accessing Operating Information

15

Mounting the Controller

36

Water Quality

15

Operating Instructions

37

Flushing the Heat Exchanger

16

 

 

(Error Code: LC or 00)

 

 

Technical Data

38

 

 

 

Pressure Drop Curve

 

 

 

Outlet Flow Data

38

 

 

 

Space Heating

39

 

 

 

Dimensions

40

 

 

 

Ladder Diagram

41

 

 

 

Consumer Support

42

 

 

 

Warranty Information

 

 

 

Limited Warranty

42, 43

 

 

 

2

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.