COMBUSTION AIR ASSEMBLY

MODEL OAC4 COMBUSTION AIR ASSEMBLY

1.Remove the cover cap from the 4 inch outlet opening location on the left or right outside surface of the fireplace. DO NOT REMOVE THE COVER IF THE OUTSIDE AIR WILL NOT BE CONNECTED.

2.Fasten the (4 inch) starting collar over the hole on the left or right side of the fireplace with the four sheet metal screws provided. (see figure 22).

3.Cut a 6 inch diameter opening for model OAC4 in the outside wall covering where the model OAC4 outside grille is to be located. (See figure 24).

4.Select and cut a piece of duct of sufficient length to attach to the fireplace and protrude at least three inches beyond the face of the wall to which the OAC4 inlet air box assembly will be attached. The duct may be cut with a standard pocket knife. (Use FP-4-U duct for maximum efficiency and safety) Do not use a combustible duct. Always use UL listed Class 0 or 1 duct material.

5.If the duct is the insulated type, push the insulation back from one end of the duct approximately two inches. (See figure 25)

6.Slip the exposed end of the duct over the flange tube of the fireplace.

7.Place the duct clamp around the exposed end of the aluminum duct.

8.Slip the band through the housing, then pull the band tight around the duct.

9.Snap the band locking screw down and tighten it with a screwdriver or nutdriver. (see figure 25)

10.Nail or screw the combustion air assembly to the surface of the wall.

NOTE: If the wall covering is brick or stone, use appropriate masonry fasteners. Mount the combustion air assembly with “TOP” upward to prevent rain from entering the assembly. Be sure the 6 inch diameter opening around the air duct is sealed with insulation material to prevent cold air from entering through the wall. If it is necessary to splice the duct, a model 403 duct connector should be installed as described by figure 26.

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53D9041. Rev 1 03/03

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Martin Fireplaces B36RA, B36LA manual Combustion AIR Assembly
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B36RA, B36LA specifications

The Martin Fireplaces B36LA and B36RA are sleek and stylish gas fireplaces designed to bring warmth and elegance to any living space. With their impressive features and advanced technologies, these models stand out as exceptional options for homeowners seeking both functionality and aesthetics in their heating solutions.

One of the main characteristics of both the B36LA (lean attrape) and B36RA (room attrape) is their versatile design. These fireplaces are engineered to seamlessly fit into various environments, whether in a traditional home or a contemporary dwelling. The clean, linear design allows for easy integration into different styles of decor, while the large viewing area offers an unobstructed view of the mesmerizing flames, enhancing the ambiance of any room.

The B36LA and B36RA utilize state-of-the-art venting technology, ensuring safety and efficiency. They are compatible with both direct vent and vent-free systems, providing flexibility in installation. The direct vent option allows for efficient removal of combustion gases while drawing fresh air from outside, making it a smart choice for energy-conscious homeowners. Both models also prioritize safety, featuring built-in safety mechanisms to prevent any gas leaks or hazards, ensuring peace of mind for users.

In terms of performance, the B36LA and B36RA boast impressive heating capabilities. With adjustable flame heights and a powerful heating capacity, they can efficiently warm spaces of varying sizes. The innovative burner design also creates a realistic flame appearance, mimicking the natural flicker of a wood fire, while producing minimal emissions, making them an environmentally friendly option.

Moreover, these fireplaces come equipped with advanced control options, allowing users to easily adjust settings from the comfort of their seating area. Remote control functionality and wall-mounted thermostat options make it effortless to maintain the desired temperature, ensuring a cozy atmosphere at all times.

With their combination of modern aesthetics, safety features, and advanced heating technologies, the Martin Fireplaces B36LA and B36RA present an ideal solution for those seeking both style and warmth. Whether creating a focal point in a living room or offering supplemental heat in a bedroom, these fireplaces deliver on all fronts, making them a worthwhile investment for any home.
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