STEP 1
Outside Wall Plenum Opening
Ensure the outside wall plenum opening is properly
framed and square per the diagram shown below.
IMPORTANT: The wall plenum is not designed to carry
structural loads. A proper header must be built into the
rough opening and a proper lintel must be installed to
support brick or other masonry materials. The plenum
requires flashing, shimming and caulking for a weather-
resistant installation.
It is the responsibility of the contractor to properly
install the plenum and meet building code
requirements.
STEP 2
Install Grille Kit RAVAL3 (not included) on the Outside Plenum
NOTE: The Grille Kit RAVAL3 is best installed onto the
Outside Plenum (Part A) prior to part A being installed
from the outside of the building. Grille installation is
easier at this point and will help keep the wall plenum
square during installation.
If you are not installing the grille at this time be sure the
plenum is square when installed in the outside opening
and do not remove the weather cover.
NOTE: Refer to instructions included in the Grille
Kit RAVAL3 for proper installation procedure.
Installation Instructions
Part A Outside
Wall Plenum
2
32"
24"
Side View
RAVAL3
RAVAL3
Part A Outside
Wall Plenum