for use of optional ak-4 outside air kit

The use of outside air for combustion is optional unless required by building codes. It is only necessary to supply outside combustion air to one side of the fireplace. Use the model AK4 combustion air kit.

Model AK-4 Combustion Air Assembly

1.Remove the cover plate from the 4" outlet opening location on the left or right outside of the fireplace.

2.Place the insulation ring between the AK-4 starting collar and fire- place wall.

WARNING

DO NOT remove the cover if the outside air will not be connected.

3.Place the starting collar (4") into the hole on the side of fireplace. Fasten it in place with the four sheet metal screws provided. See Figures 18 and 19.

Note: The air starting collar extends through the fireplace outer wrap. When the air starting collar is securely attached, it will form a seal against the fireplace wall.

4. Attach outside duct to starting collar with duct clamp or screws. See Figure 19.

 

Left Side of

Insulation Ring

 

 

 

 

 

Fireplace

 

Screws

 

Air Starting

 

 

AK-4 Starting

 

 

 

 

 

 

 

 

Collar

 

 

 

Collar

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Duct

 

 

 

Sheet

 

 

 

 

 

 

 

Meal

 

 

 

 

 

 

 

Screws

 

 

 

 

 

 

Shorter End

 

 

 

Left Side of

 

 

 

 

 

 

Fireplace

 

 

 

of Air Starting

 

 

 

 

 

 

 

Collar

 

 

Figure 19 - Attaching Outside Duct

Figure 18 - Attaching Outside Air Starting Collar

 

 

to Starting Collar

 

 

 

 

 

 

and Insulation Ring to Left Side of Fireplace

 

6" Diameter

 

 

 

 

 

 

 

 

 

5. Cut a 6-inch diameter opening for model AK-4 in the

Hole

 

Screw

 

 

 

outside wall covering where the outside vent is to be

 

 

 

 

located. See Figure 20.

 

 

 

 

Nail

6. Select and cut a piece of duct long enough to attach

 

 

 

 

Holes

 

to the fireplace and stick out at least 3" beyond the

 

 

 

 

 

 

 

face of the wall to which the AK-4 inlet air vent will be

Duct

 

 

 

attached. See Figure 19.

 

Extending

 

 

 

 

 

 

 

 

WARNING

 

 

 

 

3"min.

 

 

Use FP-4 U duct for maximum efficiency

 

 

AK-4 Inlet

 

 

and safety. Do not use a combustible

 

 

Air Vent

Screws

 

duct. Always use UL Listed Class 0 or

 

 

 

 

 

 

 

 

 

1 duct material.

 

 

Figure 20 - Combustion Air Assembly for

 

 

 

 

 

 

Model No. AK-4

 

 

 

 

 

 

 

 

Continued

61D1013

17

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Monessen Hearth BUF400, BUF500 manual Model AK-4 Combustion Air Assembly, Safety. Do not use a combustible, Duct material
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BUF400, BUF500 specifications

The Monessen Hearth BUF400 is an innovative gas fireplace designed to enhance the ambiance and comfort of any living space. Known for its elegant design and advanced features, the BUF400 stands out in the realm of home heating solutions, offering both style and functionality.

One of the Buf400's main features is its impressive heating capacity. With a BTU output of up to 30,000, this fireplace efficiently warms larger rooms, making it suitable for open living areas or cozy family rooms. The unit operates on natural gas or propane, providing versatility depending on what energy source is available in the home.

Moreover, the BUF400 is equipped with a direct vent system, which ensures optimal heating efficiency and air quality. This technology allows for the safe expulsion of combustion gases and draws in fresh air from outside, thus minimizing the risk of airflow issues that can arise with traditional wood-burning fireplaces. The direct vent system not only promotes a cleaner burning flame but also helps maintain the overall health of indoor air quality.

Aesthetically, the Monessen Hearth BUF400 offers various customization options. It can be adorned with a range of decorative fronts, including traditional and contemporary styles, allowing homeowners to seamlessly integrate the fireplace into their home decor. Additionally, the fireplace features a ceramic glass viewing area that provides an unobstructed view of the flames, enhancing the visual appeal and creating a warm atmosphere.

Another notable characteristic of the BUF400 is its user-friendly controls. The unit comes with a remote control option, allowing users to easily adjust the flame height and heat output from the comfort of their seating area. This convenience is further complemented by the fireplace's ability to operate through a wall switch, making it accessible and practical for daily use.

Safety is a priority in the design of the BUF400, which is equipped with various built-in safety features, including an automatic shut-off mechanism that activates in case of a malfunction. With its robust construction and high safety standards, users can enjoy peace of mind while enjoying the warmth and beauty of the fireplace.

Overall, the Monessen Hearth BUF400 is a superb choice for those seeking a stylish and efficient gas fireplace. With its powerful heating capabilities, customizable aesthetics, user-friendly technology, and safety features, it stands as a testament to modern fireplace design, promising to bring both elegance and comfort to homes for years to come.
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