Manual

920-087-02 (9-03)
Section II - DeepWall Installation(PXWE)
If the wail is thicker than allowed in the notes in Figure 6, a sheet
metal wall sleeve extension and flashing MUST be used.
Installation Instructions for the PXWE - 4" Wall Sleeve
Extension
The following points MUST be considered when installing a wall
sleeve extension:
Provision must be made to direct excess condensate from
the back of the wall sleeve into the extension then outside
the building or to a drainage system.
2. Air baffles must be mounted to properlydirect airflow to and
from the condenser.
3. The wail sleeve extension design must allow for the proper
mounting of the grille.
4. Caulking is required at ansites where condensate or external
water could potentially infiltrate into the building.
6. Condensate notches and overflow slots must be kept clear
of sealant and gaskets so condensate can flow freely intothe
wall sleeve extension.
NOTE: Improperfabrication or installationof a wall sleeveextension
will impair PTAC performance.
Extension Installation
Secure the wall sleeveextension to the wail sleeve before installing
it in the wall. Refer to Figure 8 for a guide for fabrication of a
condensate drip panel. The panel MUST extend the full depth of
the wail sleeve and the wail sleeve extension.
Payparticular care in sealingand caulkingthe panelwhere itmakes
contact with the wall sleeve (see Figure 8). After installation in the
wall, secure with fasteners through the sides. Use a good grade
of silicone sealant around the sleeve extension. Seal all exposed
screw heads. When the installation is complete, the outside grille
should be attached to the wall sleeve extension.
5. Fabricate and install metal flashing in wall to serve as a drip
panel. Refer to drawing for more information.
Figure8
Wall SleeveExtensionSealant Locations
®
IMPORTANT NOTE: The silicone bead MUST extend 3"
up the side of the two flanges to prevent condensate
from leaking.
Wall Sleeve
Outside Edge
Insulation
Wall Sleeve
Wall Sleeve Extension
Rear Flange Flange
| Wall SLoe %_j_) |
Silicone Bead T-_ "%'
Wall Sleeve
Extension
Sealant
I Drip Panel L
Sealant around perimeter
2 n
Sealant inside (4) bottom corners
Drip
Width of Wall Edge Notches (4)
Wall Sleeve Extension, 42" X 16" Frame, 20 gauge minimum, painted or aluminium
9