CHIMNEY CAP CHASE INSTALLATION

OUTSIDE COMBUSTION AIR RECOMMENDATIONS (CONTINUED)

1.Extremely long runs and numerous turns in the duct leading from the fireplace to the combustion air assembly should be avoided. These conditions will increase the resistance to the free flow of air through the duct. Refer to Figure29 for methods of installing the outside air for combustion assemblies.

2.The combustion air assembly should be located at an exterior location, which is not likely to be accidentally blocked in any manner. The assembly should be located above the snow line to prevent blockage by snow accumulation.

3.The combustion air inlet assembly should never be mounted in a garage or storage area where combustible fumes such as gasoline might be drawn into the fireplace.

4.Combustion air can be drawn form the crawl space under a house when an adequate supply of air is provided by open ventilation.

5.Do not take combustion air from attic space or garage space.

MODEL AK-4 COMBUSTION AIR ASSEMBLY

1.Remove the cover plate from the 4-inch outlet opening location on the left or right outside of the fireplace. DO NOT remove the cover if the outside air will not be connected.

2.Place the insulation ring between the AK-4 starting collar and fireplace wall and place the starting collar (4 inch) into the hole on the side of the fireplace. Fasten it in place with the four sheet metal screws provided.

3.Cut a 6-inch diameter opening for model AK-4 in the outside wall covering where the outside vent is to be located.

4.Select and cut a piece of duct sufficient length to attach to the fireplace and protrude at least three inches beyond the face of the wall to which the AK-4 inlet air vent 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.

6.Slip the exposed end of the duct over the starting collar on the fireplace.

7.Using the sheet metal screws provided, secure the duct end to the collar attached to the fireplace.

8.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 cold air from entering through the wall. If it is necessary to splice the duct, a model 403-duct connector should be used to splice duct sections.

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53D9042. Rev 1 03/03

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Martin Fireplaces 53D9042 manual Chimney CAP Chase Installation

53D9042 specifications

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