Rinnai Troubleshooting and Operating Information for Your Water Heater

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Trouble Shooting for Common Issues

I don’t have any hot water when I open the tap.

Make sure there is gas, water, and electricity to the Rinnai water heater (power is turned on and the gas is turned on).

When I was using the hot water, the water got cold.

If you adjusted the flow from the tap to lessen it, you may have gone below the minimum flow required. The Rinnai water heater requires a minimum flow rate to operate. (See the specification page for the flow rate of your model.)

If you are experiencing issues with higher temperature settings, then Rinnai recommends reducing the temperature setting. Selecting a temperature closer to that which is actually used at the faucet will increase the amount of hot water being delivered to the faucet, due to less cold water mixing at the fixture.

White smoke comes out of the exhaust.

During colder weather when the exhaust temperature is much hotter than the outside air, the exhaust fumes condense producing water vapor.

When I open a hot tap, I do not immediately get hot water.

Hot water must travel through your plumbing from the Rinnai water heater to the faucet. The time period for hot water to reach your fixture is determined by the amount of water in the plumbing system between the water heater and the fixture, water pressure, and the flow rate of the fixture.

After I turn off the hot water tap, the fan on the Rinnai water heater continues to run.

The fan is designed to continue running for a short time after the flow of water stops. This is to ensure constant water temperatures during rapid starting and stopping, as well as exhausting any residual gas flue products from the unit.

Accessing Operating Information

Models MC-91 and MCC-91

To display the most recent error codes press and hold the “On/Off” button for 2 seconds. While holding the “On/ Off” button press the ▲ button. The last 9 error codes will flash one after the other. To exit this mode press the “On/Off” and ▲ button as before.

To display the water flow through the water heater press and hold the ▲ button for 2 seconds and without releasing the ▲ button press the “On/Off” button.

To display the outlet water temperature press and hold the ▼ button for 2 seconds and without releasing the ▼ button press the “On/Off” button.

Water Quality

Consideration of care for your water heater should include evaluation of water quality. If the water quality exceeds the target levels provided in the table, you may want to treat or condition the water.

*Source: Part 143 National Secondary Drinking Water Regulations

 

Maximum Level

 

 

Total Hardness

Up to 200 mg / L

 

 

Aluminum *

Up to 0.2 mg / L

 

 

Chlorides *

Up to 250 mg / L

 

 

Copper *

Up to 1.0 mg / L

 

 

Iron *

Up to 0.3 mg / L

 

 

Manganese *

Up to 0.05 mg / L

 

 

pH *

6.5 to 8.5

 

 

TDS (Total Dissolved

Up to 500 mg / L

Solids) *

 

Zinc *

Up to 5 mg / L

 

 

V53i & V53e Operation and Installation Manual

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Contents ANS Z21.10.3 CSA Result causing property damage, personal injury or deathTable of Contents V53i V53e SpecificationsDescription of Operation Consumer Safety InformationSafety Definitions Safety Behaviors and Practices Safety FeaturesMC-91 MCC-91 MC-100 BC-100 MC-502 Description Features Available on Temperature ControllersFeatures Operating InstructionsMC-91-1US & MCC-91-1US Temperature Controllers ModelsBC-100V-1US Setting the Sound Volume Voice Prompt How to Set the TemperatureMCC-91 Temperature Controller Temperature Controller SettingsTemperature Options Without a Temperature Controller Model Temperature Settings Available ºFUsing the Water Smart / Bath Fill Function Setting the Water VolumeOverview Models MC-91 and MCC-91 Setting Controller to MuteSetting the Clock Filling the TubMaintenance Code Fault Remedy Error CodesCode Trouble Shooting for Common Issues Accessing Operating InformationWater Quality Circulating Pump Flushing the Heat Exchanger Error Code LC orGeneral Instructions Installation InstructionsClearances from Appliance Attachment of the Water HeaterV53iV53e V53e Electrical ConnectionGas Piping V53iPipe Sizing Procedure Example Water Piping Pressure Relief ValveFreeze Protection When the water heater or external piping has frozen Freeze Protection MethodsManual draining of the water heater Rinnai Water Heater Freeze Protection PipingError Indication or Air Handler Control Switch Recommended Piping for Basic InstallationRinnai Water Heater For this application Recommended Piping for Circulation SystemsFor this application Optional Piping for Circulation SystemsVenting Instructions Intake / Exhaust GuidelinesCondensate Maximum Vent Length Vent ProductsManufacturer Product Parts Flue Installation Concentric Venting Flue Terminal Clearances ANS Z21.10.3, CSA Vent Terminal Area Where Terminal is not PermitttedInside Corner Additional ClearancesAdditional Clearances V53e Guidelines Connecting Multiple Water HeatersHigh Altitude Installations Number Connected Accessories Necessary Water HeatersCanada only Cable Lengths and Size Temperature Controller InstallationConfigurations LocationMounting the Controller Temperature ControllerTemperature Controller Installation V53e Operating Instructions For Your Safety Read Before OperatingTechnical Data Pressure Drop CurveOutlet Flow Data Pumps Temperature SettingReplacement Space HeatingV53i V53e DimensionsLadder Diagram for Ladder Diagram for V53e Warranty Information Limited WarrantyConsumer Support What will Rinnai do? Important In the State of Massachusetts 248 CMR 4.00 State RegulationsInstructions d’installation Instructions dutilisationSupport à la clientele Temp. d’eau Instructions dutilisationPlages de température avec un contrôleur de température Options de température sans contrôleur de températureModel Arrangements de température disponibles ºF Nettoyage EntretienInstructions générales Instructions dinstallationFixation du chauffe-eau Écartements par rapport à lappareilInstallation à altitude élevée Tuyauterie de gazInstructions générales Tuyauterie deau Qualité de leauSoupape de sûreté Légende Tuyauterie recommandée pour installation de baseInstructions de ventilation Consignes pour aspiration/évacuationCondensat Longueur maximum de ventilation Produits de ventilationConstructeur Produit Pièces Espacements pour terminaison de cheminée ANS Z21.10.3, CSA Installation de conduit de cheminée VanneMa ualmanuelleValve Instructions dutilisationFUS Ther Diagramme en escalierQuest-ce qui est couvert ? Support à la clientèleLinformation de garantie Garantie limitéeQue fait Rinnai pour exercer la garantie ? VAM1620W, VB2020FFU

V53I, V53E specifications

When it comes to reliable and efficient tankless water heaters, Rinnai stands out with its exceptional models, the V53I and V53E. These units are designed to provide a continuous supply of hot water, making them ideal for a variety of applications, from residential homes to small commercial settings.

The Rinnai V53I is an indoor model that boasts advanced technology and a compact design. Its main feature is the ability to deliver up to 5.3 gallons of hot water per minute, depending on the inlet water temperature, which ensures that households can enjoy multiple hot water outlets simultaneously without the fear of running out. The unit employs advanced energy efficiency standards, which can lead to increased savings on energy bills. Additionally, it comes equipped with the Rinnai Circ-Logic technology, enabling users to set recirculation patterns that ensure hot water is readily available when needed.

On the other hand, the Rinnai V53E is engineered for outdoor installation, with weatherproof capabilities that make it resilient against the elements. Just like the V53I, it produces up to 5.3 gallons per minute, ensuring ample hot water supply. Both models are equipped with a patented heat exchanger system, designed for optimal performance and performance longevity. This means that users can rely on consistent hot water production over the lifetime of the unit.

One of the standout characteristics of these models is their compact design, making them easy to install even in tight spaces. Rinnai’s tankless technology eliminates the need for bulky storage tanks, allowing for more functional residential and commercial space. The durability and reliability of both models are further reinforced by a commercial-grade heat exchanger that can withstand high-demand situations.

From a safety perspective, both the V53I and V53E include multiple safety features, such as freeze protection and a range of venting options, providing peace of mind to users. Rinnai also emphasizes sustainability, with their units promoting reduced energy consumption and emissions compared to traditional water heating systems.

In summary, the Rinnai V53I and V53E models offer advanced technology, efficient performance, and user-friendly characteristics. Whether indoors or outdoors, these tankless water heaters are designed to meet the demands of modern living while contributing to energy savings and environmental sustainability. With Rinnai’s reputation for quality and reliability, homeowners and business owners alike can trust these models to deliver uninterrupted hot water, season after season.