Preparation Of The Wall - GE RAB77B Installation Instructions Manual

STEP 1

Preparation of the wall

The wall case should be installed during
construction and lintels should be used to support
the block above the wall case. The case will not
support the concrete block or brick. The case is
modular in height and width:
Height — Fits 2 courses concrete block
— Fits 6 courses standard brick
— Fits 5 courses jumbo brick
Width — Fits approximately 3 stud spaces.
For existing construction, wall openings must be
made. Wall opening, of the proper dimensions,
is essential to avoid the necessity of fillers or
additional framing.
Main stud
Jack studs
16 1 2
42 3 8
Cripple
Jack studs
Adjust
framing to
secure this
dimension
( *See chart
"D"*
on page 1)
Finished
floor
Sub-floor
STEP 2
Installation of the case in the wall opening
Use lintel, when required, to support brick and
block above the case.
1. Position the case into the wall. Refer to chart
on page 1 for roomside projection. The rear
(outside) edge of the case should extend at least
properly and prevent sealing the drain holes in
the rear flange
of the case, and to facilitate easy installation of
an accessory drain, if desired. (If it is desired to
have the rear grille flush on the outside, a drip rail
must
be installed under the case and caulking applied
between the drip rail and case.)
IMPORTANT:
Install case level from left to right and level
from roomside to the outside.
Do not remove the cardboard stiffener inside
the case until the chassis is installed.
2. Firmly secure the case to the wall structure.
Do not drill any holes in the bottom of the
case.
Secure case
through side and/or
top only
2" min. from
case bottom
2
Stiffener
Inside wall
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