Gas Connection

The gas supply line shall be gas tight, sized and so installed as to provide a supply of a gas sufficient to meet the maximum demand of the heater without loss of pressure.

A shut off valve and appliance connector valve should be installed in the upstream of the gas line to permit servicing.

Flexible pipe and any appliance connector valve used for gas piping shall be types approved by nationally recognized agencies.

Any compound used on the threaded joint of the gas piping shall be a type which resists the action of liquefied petroleum gas (propane / LPG).

After completion of gas pipe connections all joints including the heater must be checked for gas tightness by means of leak detector solution, soap and water, or an equivalent nonflammable solution, as applicable. (Since some leak test solutions, including soap and water, may cause corrosion or stress cracking, the piping shall be rinsed with water after testing, unless it has been determined that the leak test solution is non-corrosive.)

Check the gas supply pressure immediately upstream at a location provided by the gas company. Supplied gas pressure must be within the limits shown in the Specifications section.

Refer to an approved pipe sizing chart if in doubt about the size of the gas line.

Install the provided manual gas shut-off valve so that it can be accessed for easy operation. Do not conceal manual cut-off valve behind back spacer.

Manual gas shut-off valve

Clearances to Combustibles

When determining where to install the appliance the clearances to combustibles shown in the figure must be followed. Also refer to the Safety Behaviors and Practices section.

 

0” (0 mm)

2 in

0” (0 mm)

(50 mm)

 

2 in

(50 mm)

40 in

Attach Back Covers (Sides Only)

Attach back covers as shown.

Engage lugs

16

Rinnai Corporation EX17C / EX22C Manual

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Rinnai EX22C (RHFE-559FTA), EX17C (RHFE-434FTA) Gas Connection, Clearances to Combustibles, Attach Back Covers Sides Only

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.