Extension Kit Installation

If necessary, extension kits are available to extend the exhaust line and air intake hose between the manifold and the appliance.

(1)The maximum vent length is 13 feet (4 m) with 2 bends. The bent pipe attached to the appliance does not count toward the max limit of 2 bends.

(2)Maximum vertical length allowed is 10 feet (3 m).

(3)If the extension is longer than 10 feet (3 m), the condensate may overflow the condensation pan. Therefore, extension exceeding this length should drain to the outside and sloped 3° downward.

(4)Do not allow any low points or sagging in the exhaust line. Otherwise, condensate may block the exhaust and affect combustion.

(5)Vent extensions installed in unconditioned air space must be insulated with high temperature insulation and must be accessible.

(6)Vent extensions must not be concealed per NFPA 54 and must be accessible allowing inspection and repair. Decorative covers are available from Rinnai.

These figures show the 2 possible ways that the extension exhaust line and air intake hose may be directed away from the appliance. All views are from behind the appliance. For your configuration, position the air intake hose as shown.

INCORRECT

•Too many bends (limit is 2)

•Air intake hose is above exhaust pipe

Exhaust Line

Pipe Stopper A

Pipe Clamp

Air Intake Hose

Plastic Tie

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Rinnai Corporation EX17C / EX22C Manual

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Rinnai EX22C (RHFE-559FTA), EX17C (RHFE-434FTA) installation manual Extension Kit Installation, Incorrect
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EX17C (RHFE-434FTA), EX22C (RHFE-559FTA) specifications

The Rinnai EX17C (RHFE-434FTA) and EX22C (RHFE-559FTA) are innovative wall-mounted gas heaters that provide efficient and cozy heating solutions for indoor spaces. Manufactured with advanced technology, these models are designed to meet diverse heating needs while ensuring user comfort and safety.

One of the standout features of both the EX17C and EX22C is their energy efficiency. With a high energy star rating, these heaters minimize energy consumption, making them ideal for environmentally conscious consumers. The EX17C can deliver an impressive 17 kW of heating power, while the EX22C offers up to 22 kW, accommodating various room sizes and layouts effectively.

Both models utilize Rinnai’s advanced direct vent technology. This system allows fresh air from outside to be used for combustion, ensuring optimal heating performance without depleting indoor oxygen levels. This feature not only enhances comfort but also contributes to improved indoor air quality. Additionally, the closed combustion system ensures that exhaust gases are safely vented outside, providing a safer environment for occupants.

In terms of design, the EX17C and EX22C are sleek and modern, fitting seamlessly into various interior styles. Their wall-mounted configuration saves floor space, making them suitable for smaller rooms or homes where space optimization is a priority. The adjustable heat settings enable users to customize their heating preferences according to the season or personal comfort levels.

User convenience is a core aspect of both models, which come equipped with an intuitive electronic control panel. This feature allows for easy temperature adjustments and scheduling, ensuring that optimal heat levels can be maintained without constant manual intervention. Some models also offer remote control capabilities, enhancing usability for consumers.

Safety is paramount in Rinnai's design philosophy, and the EX17C and EX22C include multiple safety features such as flame failure detection and automatic shut-off. These mechanisms ensure that any irregularities in operation are promptly addressed, providing peace of mind for homeowners.

In conclusion, the Rinnai EX17C and EX22C offer modern, energy-efficient heating solutions with advanced technology, user-friendly features, and a focus on safety. These models are ideal choices for anyone looking to enhance their indoor heating experience while maintaining energy efficiency and comfort.
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