15
Marvair Scholar III™ VAISA I&S Manual 03/2019 Rev. 8
K. If the heat pump or air conditioner is to fit flush against the inside of the exterior
wall, cut to length, strips of open cell polyurethane foam 1” wide by 1/2” thick with
adhesive backing, field supplied, on one side. This may be applied to the back of the
heat pump and plenum along and flush with the two vertical and top horizontal edges.
These strips will provide a finished appearance to the wall/heat pump interface and
provide a seal between the equipment and wall. If the heat pump or air conditioner is
applied with a side against a wall (in a corner), use the same strip material on the end
panel along the side vertical edge.
L. Prior to sliding the Scholar III™ heat pump or air conditioner into the wall opening,
check to be sure that the floor surface is hard, smooth and level (concrete, wood,
vinyl tile or the equivalent). If the floor is carpeted, cut out an appropriate “footprint”
based on the Figure 3 drawings and the location of the unit relative to the inside
finished wall (flush or offset). Be sure the surface is level or provisions are made to
level the unit upon installation.
M. If the outdoor air box was removed, reinstall it prior before placing the Scholar III™
unit in its final position. Install the outdoor air box onto the back of the Scholar™
III heat pumps or air conditioners before sliding the unit into position. Apply a
weather-proof sealant; i.e., silicone, onto the back of the Scholar III heat pump or air
conditioner prior to installing the outdoor air box to prevent water leaks.
1.10 INSTALLATION THROUGH THE OUTSIDE WALL.
A. Slide the Scholar III™ heat pump or air conditioner into the wall opening slowly,
being careful to clear the appropriate stubouts. The heat pump or air conditioner,
when installed properly, should have a clearance between the air box outside edge
and the finished outside wall as shown in Figure 4. Proper fit up of the louver/collar
assembly to the air box to the outside wall requires the noted recess dimension to be
maintained after installing the unit.
B. To minimize sound in the classroom, insulate all four sides of the outdoor air box that
is internal to the classroom with the following:
Layer 1: 1/2” Rubatex
Layer 2: 1-1/2: Duct Board
