Rinnai REU-VA3237FFU installation manual Optional Piping for Circulation Systems

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Optional Piping for Circulation Systems

PLEASE NOTE THIS PIPING

ARRANGEMENT REDUCES

RESIDENTIAL AND COMMERCIAL

WARRANTY TO THE FOLLOWING:

3 Years On Heat Exchanger

3 Years On Parts

(Full warranty will be maintained if an on-demand recirculation system is incorporated.

Refer to the Limited Warranty.)

For this application:

Pump should be controlled by an Aquastat, Timer or Combination Aquastat and Timer.

Pump to be sized to maintain circulation loop temperature.

A minimum of 3 GPM flow is recommended for the circulation system.

The pump should be sized to overcome the pressure loss through the Rinnai water heater, supply and return plumbing. Refer - ence the Rinnai Hot Water System Design Manual, Pump Sizing for Circulation.

Pump to be of bronze or stainless construc - tion.

Note:

Water heater outlet temperature cannot be adjusted when circulation pump is running.

Minimum 3/4" Hot Water

Supply Line

Rinnai

Water Heater

Rinnai

 

Equipment List

QTY

Rinnai

1

Water Heaters

 

RIK-KIT (Optional)

1

 

(3/4" Fittings Include:

 

2

Unions, 2 Ball Valves,

 

2

Drain Valves and

 

1

Pressure Relief Valve.)

 

3/4" Gas Connection

Gas Supply

Minimum 3/4"ColdWater Supply Line

(Optional)

2-6 Gallon Storage Tank

(To eliminate cold water sandwich effect caused by frequent On/Off operation)

Expansion Tank

Building Fixture Outlets

 

KEY

3/4" Ball Valve

Pressure Regulator

 

3/4" Union

Circulating Pump

Check Valve

Boiler Drain Valve

Pressure Relief Valve

S Solenoid Valve

This is not an engineered drawing, it is intended only as a guide and not as a replacement for professionally engineered project drawings. This drawing is not intended to describe a complete system, it is up to the contractor/engineer to determine the necessary components for and configuration of the particular system being installed. The drawing does not imply compliance with local building code requirements. It is the engineer/contractor responsiblity to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation.

VA Series Indoor LS Manual

25

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Contents ANS Z21.10.3 CSA REU-VA3237FFUTable of Contents R98LSi SpecificationsSafety Definitions Consumer Safety InformationSafety Behavior and Practices Safety Features Features Features Available on Remote ControllersDescription of Operation Operating InstructionsMC-91-1US & MCC-91-1US Remote Controllers ModelsBC-100V-1US Temperature Options Without a Remote Controller Setting the TemperatureSetting the Sound Volume Voice Prompt Temperature RangesSetting the Clock Model Temperature Settings Available ºFSetting the Water Volume Using the Water Smart / Bath Fill FunctionOverview Filling the Tub Setting Controller to MuteModels MC-91 and MCC-91 Maintenance Error Code Table Error CodesError Fault Remedy Code Accessing Operating Information Trouble Shooting for Common IssuesWater Quality Rinnai Water Heater Flushing the Heat Exchange Error Code LC orGeneral Instructions Installation InstructionsAttachment of the Water Heater Clearances from ApplianceGas Piping Electrical ConnectionGeneral Instructions Pipe Sizing Procedure Example Pressure Relief Valve Water PipingFreeze Protection Rinnai Water Heater Freeze Protection PipingQTY Recommended Piping for Basic InstallationFor this application Recommended Piping for Circulation SystemsYears On Heat Exchanger Years On Parts Optional Piping for Circulation SystemsIntake / Exhaust Guidelines Venting InstructionsCondensate Maximum Vent Length Manufacturer Product Parts Vent ProductsTermination Flue Terminal Clearances ANS Z21.10.3 CSA Area Where Bterminal is not PermitttedInside Corner Additional Clearances Vent TerminalFlue Installation Concentric Venting R50LSi, R75LSi, R94LSi Air Intake Assembly Flue Installation R98LSi, R98LSi-ASMEExhaust Pipe Assembly Venting Clearances to CombustiblesVertical Terminations Horizontal with Concentric TerminationConnecting Multiple Water Heaters High Altitude InstallationsNumber of Connected Water Heaters Accessories Necessary GuidelinesConfigurations Remote Controller InstallationLocation Cable Lengths and SizeSecuring screw Wiring hole 21/32 Operating Instructions For Your Safety Read Before OperatingPressure Drop Curve Technical DataOutlet Flow Data Space Heating R50LSi, R75LSi, R94LSi R98LSi, R98LSi-ASME DimensionsHOT Ladder DiagramLimited Warranty Warranty InformationConsumer Support VA LS Series Period of Coverage from date of purchaseWhat will Rinnai do? Rinnai’s other fine products 103 International Drive

REU-VA3237FFU specifications

The Rinnai REU-VA3237FFU is a high-efficiency gas continuous flow water heater designed to provide instant hot water on demand. It is particularly well-suited for households that require a reliable source of hot water while maximizing energy savings. This unit boasts impressive features that set it apart in the market, catering to both residential and commercial applications.

One of the standout characteristics of the REU-VA3237FFU is its energy-efficient design. With an impressive energy factor of 0.89, this model delivers exceptional performance, maximizing energy use and minimizing waste. The continuous flow technology means that there is virtually no wait time for hot water, making it ideal for busy households with multiple points of use.

The REU-VA3237FFU employs advanced temperature control technology. It features an intelligent digital controller that allows users to easily set their desired water temperature. This ensures consistent delivery of hot water at the desired temperature, enhancing comfort while also promoting safety by reducing the risk of scalding. The model also incorporates a safety lock function that can prevent accidental changes to the temperature setting.

In terms of durability and design, the Rinnai REU-VA3237FFU showcases high-quality build materials that contribute to its longevity. The stainless steel heat exchanger is resistant to corrosion, ensuring a long life expectancy and reliable performance over time. Additionally, the compact design makes it easy to install in tight spaces, whether indoors or outdoors, adapting to various installation environments.

Moreover, the Rinnai REU-VA3237FFU features a low NOx emission system, aligning with environmental standards and regulations. This eco-friendly technology makes it an excellent choice for environmentally conscious consumers looking to reduce their carbon footprint while enjoying the benefits of modern hot water systems.

The Rinnai REU-VA3237FFU is also equipped with a self-diagnostic system, which allows for easier maintenance and troubleshooting. This feature increases the unit's reliability by monitoring its performance and alerting users to any potential issues before they develop into significant problems.

In summary, the Rinnai REU-VA3237FFU is a standout continuous flow water heater that combines energy efficiency, durability, and advanced technology. With its smart temperature control, compact design, and environmentally friendly features, it is an outstanding choice for anyone seeking a dependable and efficient hot water solution.