Architect and Engineering Manual

geappliances.com
7
WALL PLENUM
Since the unit itself does not install in the wall opening,
the use of a plenum is necessary to contain and separate
the outdoor air paths. The plenum must be able to hold
water in the bottom without
leaking into the wall cavity. It also
must have a “splitter" to separate
the outdoor air paths and prevent
the discharge air from being drawn
back into the unit.
The wall plenum is the first
component to be installed.
GE Appliances model RAVWPT15
is available for use with wall
thicknesses of 8" to 15".
The plenum is to be installed square and level in the
opening and secured to the wall construction with screws
or nails in the sides located a minimum of 2" up from the
bottom of the plenum. No nails or screws may be used
in the bottom or top of the plenum to prevent water
entering the wall cavity.
The plenum is not load bearing, so a proper header needs
to be installed above the plenum the same as over any
window opening in the wall. If the building construction
is brick, concrete block or other non-self-supporting
material, a lintel must be installed over the plenum
opening. The plenum must be caulked to the wall, both
to the outdoor wall face and to the interior wall, along
all four sides to prevent air and water infiltration.
WALL PLENUM MODELS:
RAVWPT15-For installations with walls 8" to 15" thick.
REPLACEMENT OF OLDER GE VERTICAL
PRODUCT
When replacing a previous model GE Appliances vertical
unit with a new AZ95 series vertical air conditioner, one
of three transition plenums must be used.
Differences in chassis designs between the prior models
and AZ95 series require careful installation and planning.
Changes in drain exit locations, drain routing, electrical
connections, platform height, conditioned air duct
location and additional space requirements for installation
of a transition kit are all items that need to be considered
when replacing a prior model with an AZ95 series unit.
The selection of the appropriate transition kit is based on
the original wall plenum being used. If a RAVTRANS kit
is already being used to transition an original wall plenum
to an AZ90/91 series, it will need to be removed and a
RAVTRANS2 kit will need to be installed prior to installing
an AZ95 series unit. Please reference the following chart
to determine which transition kit is needed. Before
starting the conversion, be sure there is adequate closet
space to meet the manufacturer's recommend minimum
clearance requirements.
INSTA-PLATFORM
™
The AZ95 series requires the use of a separate drain
platform accessory (RAVDPLAT). This accessory supports
the chassis and positions it properly to seal to the wall
plenum. Also, it serves as the drain pan for the chassis
with connections for both a primary and secondary
drain. This innovative accessory saves time and money
by eliminating the need for field-fabricated support
platforms. It also greatly simplifies chassis removal
from the closet because the plumbing connections are
made to the platform as opposed to the chassis itself.
The drain platform height is determined based on the
position of the RAVWPT15 wall plenum. The bottom edge
of the drain platform is flush with the bottom edge of the
wall plenum. Technically, the bottom edge could be set
to floor level, but that would likely make connecting to
a building drain system difficult. In most installations, it
will be desired to raise the platform several inches off the
floor. This can easily be done using 2"x4" lumber cut to
length and positioned in the integrated support pockets
of the RAVDPLAT. Only two support legs are needed as
the exterior side is supported by the wall plenum.
The primary drain can be directed out either side or the
front of the drain platform through sidewall notches in
the platform. If the platform is elevated for drainpipe
clearance below, the primary drain can run any direction
desired. The secondary drain is to be piped through the
wall plenum to the exterior of the building.
For further detail, please see the RAVDPLAT Installation
Instructions.
COMPONENTS & INSTALLATION
Each Zoneline single packaged vertical unit requires a
drain platform, wall plenum, exterior grille, unit, remote
thermostat, power connection kit, return air grille/access
panel, filter, ductwork and supply registers.
The drain platform legs, ductwork and supply registers
are field supplied. Each of the other components is
ordered separately. The drain platform, wall plenum and
exterior grille are specifically designed to interface with
the GE Appliances Zoneline Vertical chassis and must be
purchased from the same source as the unit. Custom
exterior grilles may be used but must comply with the
requirements shown on page 10.
The remote thermostat and the return air grille are
offered as accessories by GE Appliances, but may be
purchased from a source other than GE Appliances.
If a non–GE Appliances thermostat is being used,
it should meet the general thermostat requirements
mentioned on page 12. Any custom return air grille
being used should offer a louvered area as large as
the GE Appliances offering or larger.
Transition Kit
Model
AZ75/85 Series (used a beige color plenum)
AZ90/91 Series RAVWPT8 plenum ONLY
(black, 5.5"-8" deep)
AZ90/91 Series RAVWPT14 plenum ONLY
(black, 8"-14" deep)
1.5"
N/A
N/A
RAVTRANS2
RAVTRANS3
RAVTRANS4
Transition From
Additional Closet
Clearance For Kit
NOTE: For AZ90/91 model replacement, make sure no
existing RAVTRANS kit is being used. If so, discard and use
RAVTRANS2
Preliminary specifications. Subject to change.