12
C. INSTALLATION OF THE UNIT
C.4 Sleeve Installation(Cont)
Installation Requirements
STEP 1. The USC sleeve should be positioned so that the drain
extension extends a minimum of 9/16 beyond the outside wall (see
Figure C.4.1).
STEP 2. The USC sleeve must extend a minimum of 7/8 beyond the
inside wall.
STEP 3. The USC sleeve must be installed level side to side.
STEP 4. The USC sleeve must also be installed with a downward tilt
toward the outside of the building. If a level is placed so that it rests
on the front and back unit rest as shown in Figure C.4.2, a properly
installed unit provides a 3/8” slope to the outside of the building.
NOTICE
Sleeve projections and leveling precautions must be
observed to prevent the entry of water into the room.
CAULK
(AS NEEDED)
FRONT
OF UNIT
FRONT
UNIT
REST
LEVEL
BACK
UNIT
REST
SHIM TO
PROPER
SPACING
CAULK
(AS NEEDED)
BACK
OF UNIT
SLOPE
3
/8″
CAULK
(AS NEEDED)
Figure C.4.2
Sleeve Requirements
STEP 1.
After unpacking the USC sleeve from the carton, remove
the indoor weather panel. Place the USC sleeve in the wall opening
following the instructions given in the Installation Requirements.
Attach the sleeve to the inside wall by driving two #12A x 2” screws
in each side of the sleeve (see Figure C.4.3). Shim at the top of the
sleeve, midway between the sides. Drive one #12A x 2” screw in the
top of the sleeve. If the wall opening is not framed with wood, use
expansion anchor bolts or molly (toggle) bolts (not provided).
STEP 2. Once the sleeve has been installed, check the level again to
be sure the 3/8” downward slope is maintained.
NOTE: If necessary, apply shims below the chassis and inside the
sleeve front unit rest, to ensure a 3/8” downward slope front to
back.
STEP 3. Caulk the perimeter of the entire opening on the inside and
the outside between the sleeve and the wall.
STEP 4. The indoor weather panel removed in Step 1 above must
be remounted back in place if masonry work is to be done and/ or if
the “Uni-fit”chassis is to be installed at a later date.
Figure C.4.3
A USC SLEEVE
B INDOOR WEATHER PANEL (METAL)
C OUTDOOR WEATHER PANEL (PAINTED METAL)
D ASSY GRILLE USC SLEEVE
E GASKET (ATTACHED TO SLEEVE)
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