Armstrong World Industries 183 Service Reference Manual, Accessories, Wall Sleeve Installation

SRM-HW/HWC 8/99

Service Reference Manual ACCESSORIES

7-5

Wall Sleeve Installation

The wall sleeve can be installed from either the inside or the outside of the building. In any case, proper considerations must be made for final weather sealing of the wall sleeve and the Magic-Pak unit.

Whether installing from the inside or outside of a building, the wall sleeve may be secured to the supporting wall through the top and side support angles or directly through the wall sleeve side panels. When securing the wall sleeve directly through the side panels, the top and side angle supports are often used as “stops” to assure proper alignment before final securing of the wall sleeve is accomplished.

The top and side support angles can be adjusted to allow the unit to protrude through the outside of the supporting wall by 1" or 3-3/4" inches. This will also change the depth that the unit protrudes through the inside wall. This adjustment is designed to allow for final sealing of the wall sleeve to various finish types.

The top and side support angles can be removed altogether and the wall sleeve secured directly through the side panels, provided that the installer performs a proper alignment of the wall sleeve.

WARNING

The further the wall sleeve is extended past the finished wall the more difficult it becomes to accom- plish final sealing from the inside of the building. Adequate safety precautions must be considered to protect personnel.

Whether installing from the inside or the outside of the building, the wall sleeve should extend at least 3/8" - 1" beyond the finished wall to allow for proper weather sealing. When installing during wall construction, consid- eration must be made to allow for final weather sealing to the type of finish wall that will be constructed later.

Recessed Wall Sleeve Installation

In some applications, the thickness of the wall or architectural design will dictate that the wall sleeve be recessed in the finished wall. This can be done, but it is not recommended if the wall opening is required to be the same size as the wall sleeve opening.

Recessed installation can be done if the wall opening is 2" larger verti- cally than the wall sleeve. The wall sleeve may then be placed on a sill 2" higher than the bottom of the finished wall opening.

The sill must be recessed 3/8" - 1" inside of the outer edge of the wall sleeve. This permits weather sealing of the bottom edge without plugging the drain holes in the bottom of the wall sleeve.

The top of the finished wall opening should extend above the top of the wall sleeve by a dimension equal to or greater than the dimension that the wall sleeve is recessed.