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3.2 WALL SLEEVE INSTALLATION
3.2.1 Wall Case Installation Data
General
Generally, units are installed 3" to 5" above the floor
(flush to finished floor installation is possible) as near to
the center of the room as possible; underneath a
window or a glass panel is typical. Normal installation of
the wall case allows installation flexibility; from flush
with the finished interior wall to a minimum of 1/4" of the
wall case extending beyond the finished exterior of the
building.
Special consideration must be given to installations
where the wall case does not extend a minimum of 1/4"
beyond the finished exterior wall.
Regardless of the installation, there are several things
to consider when selecting a location for installing the
unit. For instance, drapery location could interfere with
air discharge, and placement of furniture may have an
impact on the performance of the unit. The following
information is intended to minimize installation
problems and assure you of trouble-free installation.
Refer to page 24 for required wall opening dimensions.
Minimum recommended interior and exterior case
projection for standard wall thicknesses are shown in
the drawings in this manual. The case may be installed
flush with the finished indoor wall.
Mounting an outdoor grille or louver section to the
building face may cause a space between the outdoor
coil and the louver section. Air splitters, aligned with the
ends of the outdoor coil, must be installed between the
outdoor coil inlet and outlet air streams. Gaps between
the outdoor coil and the louver section may allow
condenser air recirculation and affect the operation of
the unit. See page 40 for requirements for custom
louver sections.
For new construction, early planning with the architect
is necessary. Unit location, electrical connection
locations, and wall openings of the proper dimensions
are essential to avoid the necessity of rework, fillers,
framing, moving electrical outlets, and other expensive
modifications.
For existing construction it is important that carpentry,
masonry and electrical work be performed by
competent, qualified personnel. Since installations in
existing construction may involve removal of
building material from the structure, locating the
wall case must be done correctly.
The wall case should be level from side to side
and from level to 1/4 bubble tilt to the outdoors.
The condensate disposal system in the unit is
designed to dissipate the condensate water
generated during cooling operation in
accordance with ARI standards and actually
uses this water for maximum unit efficiency. A
level unit will also insure proper performance of
the Internal Condensate Removal (ICR) system
optional on heat pump units.