Venting Instructions

Intake / Exhaust Guidelines

•This water heater is a direct vent water heater and therefore is certified and listed with the vent system. You must use vent components that are certified and listed with the water heater model.

•Do not combine vent components from different manufacturers.

•The vent system must vent directly to the outside of the building and use outside air for combustion.

•Every vent connection must be accessible for inspection, cleaning, and replacement.

•Avoid dips or sags in horizontal vent runs by , installing supports per the vent manufacturer s instructions.

•Support horizontal vent runs every four feet and all vertical vent runs every six feet or in accordance

Refer to the specific instructions on your vent product for additional installation requirements.

with local codes.

•Venting should be as direct as possible with a minimum number of pipe fittings.

•Vent diameter must not be reduced.

•Do not connect the venting system with an existing vent or chimney.

•Do not common vent with the vent pipe of any other water heater or appliance.

•Vent connections must be firmly pressed together so that the gaskets form an air tight seal.

•R50LSi, R75LSi, R94LSi: The vent piece connected to the water heater must be secured with one self-tapping screw.

•Refer to the vent pipe manufacturers, instructions for component assembly instructions.

Condensate

Condensate formation can occur in high efficiency direct vent appliances. To prevent condensate damage follow these instructions.

•Vertical terminations must incorporate a condensate drain and trap as close as possible to the appliance.

•The condensate trap must contain a minimum of 3 inches (75 mm) of water.

•Dispose of condensate per local codes.

•Rinnai offers a condensate trap.

•Rinnai LSi tankless water heaters have an integrated condensate collector.

•Slope any horizontal venting 1/4 inch per foot

(19 mm / m), towards the heater if the condensate collector is used, or towards the exhaust terminal if the condensate collector is not used.

•Regions of cold climate will create more condensate in the vent system. The condensate collector should be used in cold climates.

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VA Series Indoor LS Manual

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Rinnai REU-VA3237FFU installation manual Venting Instructions, Intake / Exhaust Guidelines, Condensate
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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.
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