Wall Opening Requirements; Wall Construction Types - McQuay PDAA Installation & Maintenance Data

Wall Opening Requirements

When roughing in the opening for the wall sleeve,
make certain there is sufficient clearance from the
walls and floor. The wall sleeve should be positioned
a minimum of 5/8" in from the room side finished
wall to accommodate the room cabinet. A minimum
distance of 3" above the finished floor is required for
return air.
The rough opening should measure 16
42 / " wide. When using a louver frame, the opening
1
4
must measure 16 / " x 42
5
8
used for panel wall and thin wall applications to assure
positive anchoring to the wall (Figure 13). When a
elecrical subbase is used, the opening must start 3"
to 4" above the finished floor (including carpeting) to
match the height of the subbase selected. The subbase
is available in 3" or 4" heights and has adjustable
leveling legs that provide up to an additional 1" height.
A 3" or 4" subbase is required for 265V models and
is optional for 208/230V models.

Wall Construction Types

Figure 5. Panel Wall (Thin) Construction
Steel Studs
Concrete
Pillars
16 " x 42
1
/
4
Wall Sleeve
Rough Opening or
16 " x 42
5
/
8
Louver Frame
(See page 11 for Installation)
/ " high x
1
4
/ ". Louver frames should be
5
8
"
1
/
Floor
4
" When using a
5
/
8
Figure 6. Masonry Wall (Thick) Construction
Room Side
Wall Sleeve Extension
(See page 11 for
Splitters
Installation)
Figure 7. Frame and Brick Construction
16 " High
1
/
4
" Wide Wall
1
42 /
4
Sleeve Rough Opening
IM 934-2 Applied PDAA/PDHA / Page 7 of 44
Lintels (by others)
16" x 42"
Wall Sleeve
16" x 42"
Wall Sleeve
Lintel
(by others)