Installation 54
Installation of unit
6RWU0-06A
PTAC
Preparation of the front grille
Carefully remove shipping tape from the front grille.
Brick, Frame, Stucco and Shingle
Construction
For new construction, the opening for the wall case should
be framed and inserted into the opening during construc-
tion. Lintels should be used when the building material is
heavy and is not self supporting (such as brick). The wall
case will fit an opening of six courses of standard brick or
five courses of jumbo brick. Wall framing in this type con-
struction is normally on 16" centers and the wall case will fit
a framed opening spanning three 16" O.C. 2" x 4" stud
spaces.
For existing construction the indoor and outdoor wall will
need to be cut out, allowing for clearances of 1/8" on all
sides of the wall case. Work should begin on the inside wall.
Cut the correct dimensions and mark (using drill holes) the
outside wall from each corner of the inside cutout. Studding
that interferes with the opening must be removed and a suit-
able frame constructed to secure the wall case and provide
adequate support for case and chassis.
Preparation of the Wall Case for All Types of
Construction
As shipped, the LG wall sleeve is ready for installation.
Do not remove the stiffener from inside the wall case or the
weather closure panel from the outside face of the wall case
until the outdoor grille and chassis are ready to be installed.
Installation of Wall Case in Wall Opening
1. Position the wall case into the wall. The room side edge of
the wall case should be at least flush with the finished wall
for line cord installations and permanent connection installa-
tions when no sub-base is used, and should project into the
room at least 2-3/8" when a sub-base is used. If the mini-
mum exterior dimensions are not met, refer to page 60.
The outside edge of the wall case should extend at least
1/4" beyond the outside wall.
This is necessary for proper caulking, to prevent sealing
thedrain holes in the rear flange of the wall case, and to
facilitate the installation of an accessory drain, if used.
2. The wall case should be secured to the wall at both
sides.
Use a minimum of two screws or other fastening device
on each side. See Figure 2 page 60. Mark the wall case
on each side 2" from the bottom and 2" from the top at a
point where basic wall structure is located. Drill wall case
and use fasteners appropriate for wall construction. All
holes for fasteners in the side of the wall case must be at
least 2" up from the bottom of the wall case.
Never fasten screws or put other holes in the bottom
of the wall case.
If the wall opening is greater than the case dimensions,
spacers must be used on the sides between the wall
case and the wall support structure to prevent distorting
the wall case.
3. Caulk or gasket the entire opening on the outside
between the wall case and exterior wall surface (4 sides)
to provide total water and air seal.
4. Caulk or gasket room-side opening between wall case
and interior wall surface (4 sides). Opening beneath or
around the wall case can allow outdoor air to leak into the
room resulting in increased operating costs and improper
room temperature control.
Care should be taken in location of electrical supply
entry in relationship to wall sleeve to assure access to
receptacle or junction box once unit is installed.
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1
1
Shipping Tape
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 conden-
sate 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) sys-
tem optional on heat pump units.
