Flue Manifold Installation

•The flue manifold must exhaust to the outside. Do not exhaust into other rooms.

•The flue manifold is not designed to be positioned under floors or below the heater.

•This appliance can only be used with one of the five types of Rinnai flue kits. The flue kits and their dimensions are listed on the previous page.

•Refer to the Flue Terminal Clearances section.

•The termination cannot be vertical.

1.Disassemble the flue manifold The flue consists of 3 parts:

•

Inside Connection

Terminal

sleeve

 

•inside connection

•outside terminal

Disassemble the flue manifold by first pulling

 

out the inside connection. To remove the

 

outer terminal pull and release the two

 

internal ties and then pull out the outer

Sleeve

terminal.

Clearance to combustibles for the sleeve and flanges is zero inches.

2. Adjust the sleeve length

Measure wall thickness through previously

drilled 3 1/8 inch (80 mm) hole.Remove extension if necessary

The end of the sleeve should protrude 3/16 - 3/8 inch (5-10 mm) from the outside wall.

The sleeve is threaded for adjustment. Adjust the sleeve length to wall thickness plus 3/16 - 3/8 inch (5-10 mm).

NOTE: Do not extend beyond the red line.

For other than the “S” type flue manifold, if a shorter length is necessary an extension can be removed. Cut the outer plastic laminate (with a utility knife or similar) and remove the extension. The metal should not be cut.

3. Attach the sleeve

 

Attach to the inside wall using 3 screws

sleeve should

arranging the flange so that the marking

extend 3/16 -

“TOP” is at the top.

3/8 in (5-10 mm)

The flange is offset 2° to allow the

 

condensate drain to the outside.

 

3 screws

 

22

Rinnai Corporation EX17C / EX22C Manual

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Rinnai EX22C (RHFE-559FTA), EX17C (RHFE-434FTA) installation manual Flue Manifold Installation
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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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