Description of Operation

The Rinnai water heater is one of the most advanced water heaters available. It provides a continuous supply of hot water at a preset temperature.

This appliance is a condensing tankless, direct vent appliance where air is brought in from the outside and combustion gases are exhausted to the outside. This appliance uses a concentric vent where the outer passage way brings in air from the outside, and the inner passage way expels the combustion gases.

While electricity, water, and gas supplies are connected, the Rinnai water heater produces hot water whenever a hot water tap is open.

Ignition is electronic. There is no pilot light consuming gas while the water heater is not being used. The gas burner lights automatically when the hot water tap is opened and goes out when the tap is closed.

Installation of the temperature controller is highly recommended. The temperature controller can set the temperature within a specific range and can provide error codes to diagnose any problems.

The temperature of the outgoing hot water is constantly monitored. The Rinnai water heater may adjust the water flow in order to maintain the temperature setting. The water flow may vary from summer to winter due to the difference in ground water temperature.

Operating Instructions

Features Available on Temperature Controllers

The MC-91 temperature controller is supplied with the appliance. Additional functions are available through the use of optional controllers.

Features

Call

Clock

Error Codes

Function

In Use Indicator

ON/OFF Button

Power Save

Priority Button /

Indicator

Sound Volume

Temperature Display

Thermostat

Water Smart / Bath Fill Button / Indicator

Water Volume

MC-91

MCC-91

MC-100

BC-100

MC-502

Description

 

 

 

 

 

Sends a short series of beeps to all controllers in the system. It is not an intercom.

12 hour AM/PM clock.

When a fault is detected an error code flashes at the temperature display on models MC-91, MCC-91, and MC-502; and flashes at the clock display on models MC-100 and BC-100.

Used on this model to set the clock or sound volume.

Indicates that hot water is being supplied (i.e. a hot water tap is open).

Used to turn the water heater ON or OFF.

Allows the temperature controller to be in an energy saving mode.

Indicates that this controller is setting the temperature . Priority can be switched to another controller by pressing its Priority Button when no hot water is running.

Used to adjust the voice prompt volume.

Shows the temperature setting.

Increases or decreases the temperature setting.

Used to select the Water Smart / Bath Fill Function to fill a bath with a predetermined volume of water.

Used to select the water volume for the Water Smart / Bath Fill

Function.

Manual - Rinnai Condensing Water Heaters

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Rinnai RC98E, RC98I, RC80I Description of Operation, Operating Instructions, Features Available on Temperature Controllers

RC80E, RC80I, RC98E, RC98I specifications

The Rinnai RC80E, RC98I, RC98E, and RC80I are high-efficiency tankless water heaters that exemplify leading-edge technology and engineering. Designed to meet the demands of modern households, these units provide continuous hot water while offering energy savings and compact sizes.

Starting with the RC80E, this model features a maximum flow rate of 8 gallons per minute, making it suitable for smaller homes or multi-family settings. It incorporates Rinnai's Circ-Logic technology, allowing homeowners to customize their hot water recirculation. This means users can schedule hot water availability, ensuring comfort while minimizing water waste.

The RC98I and RC98E models elevate performance, boasting a maximum flow rate of 9.8 gallons per minute. The "I" in RC98I stands for internal, indicating its built-in temperature control and Wi-Fi connectivity options. This allows for remote monitoring and control via a smartphone app, enhancing user convenience. In contrast, the "E" in RC98E indicates it has an external setting, providing flexibility for homeowners seeking installation options that cater to their specific needs.

All four models feature Rinnai’s condensing technology, which utilizes a dual heat exchanger design for superior efficiency. This not only lowers energy costs but also reduces CO2 emissions, aligning with eco-friendly standards. Additionally, they operate at an impressive Uniform Energy Factor (UEF), which is crucial for energy-conscious homeowners.

Safety is a significant consideration in Rinnai’s design philosophy. The RC80E, RC98I, RC98E, and RC80I come equipped with multiple safety features, including overheating protection and venting safeguards, ensuring peace of mind during operation. Their compact size allows for versatility in installation, fitting into tight spaces and freeing up valuable room in your home.

Moreover, these water heaters are designed for longevity, featuring a durable construction that resists corrosion. Rinnai's commitment to quality is evident in their extensive warranty, proving their confidence in the product’s reliability.

In summary, the Rinnai RC80E, RC98I, RC98E, and RC80I units represent a blend of advanced technology, efficiency, and convenience. With significant flow rates, innovative features like Circ-Logic and Wi-Fi compatibility, as well as robust safety measures, they are an excellent choice for any homeowner looking to enhance their hot water experience while promoting energy efficiency.