Exterior Grilles - GE 5500 Data Manual

Exterior Grilles

Four styles of outdoor grilles are available for exterior
treatments. The standard stamped aluminum grille
(RAG60), the molded architectural louvered exterior grilles
(RAG61-63), the molded architectural louvered exterior
grilles with flange (RAG64-66), and the extruded aluminum
architectural louvered grille (RAG67). All grilles include air
deflectors and gaskets to prevent condenser air
recirculation.
RAG60 Outdoor Grille -
The standard exterior
grille is made of durable
aluminum to protect
chassis components and
prevent air recirculation.
RAG61, 62, 63 Architectural
Grille - One piece optional
molded grille and frame
assembly provides improved
appearance, protection and
weatherability. Molded of
durable polycarbonate, the
surfaces of the grille have a
colorfast, slightly textured
finish which blends well
with most types of wall
surfaces. The grilles can be painted in the field to match the
building for improved aesthetics.
RAG64, 65, 66
Architectural Grille with
Flange - Identical to
RAG61-63 grilles with the
addition of a 1/2" flange
around the top and sides to
help conceal the juncture
of the RAB71 wall case and
the wall opening. The best
appearance is achieved with
this grille when the wall case extends minimally (between
1/4" and 1/2") beyond the exterior face of the building.
Colors: RAG61 and 64 - Beige; RAG62 and 65 - Dark Maple
RAG63 and 66 - Bittersweet Chocolate.
RAG67 Extruded
Aluminum Grille - The
RAG67 is made from
extruded anodized
aluminum for use where
an aluminum architectural
grille is preferred. The
RAG67 is available in a
clear finish and may be
special ordered from GE in
other colors. Minimum order quantities may be required.
Contact your General Electric salesperson for details.
All grilles are installed and secured to the wall case from the
inside. Keyhole slots in the rear flange of the case allow the
grille to be placed in position before securing it firmly to the
wall case.
40
RAG60 Outdoor Grille
RAG61 Outdoor Grille
RAG64 Outdoor Grille
RAG67
Replacement of existing units: If an existing grille is not
replaced, capacity and efficiency will be reduced and the
unit may fail to operate properly or fail prematurely. A
deflector kit, RAK40, may be used with grilles that were
not designed for current AZ Series GE Zoneline units.
The RAK40 contains air deflectors and gaskets that
mount to the chassis to direct the hot exhaust air away
from the air intake to allow the unit to function properly.
All grilles used with GE Zoneline units must comply with
requirements of Exterior Architectural Treatments and
Special Outdoor Grilles. as follows.
Exterior Architectural
Treatments and Special
Outdoor Grilles
The architectural design of a building may dictate the use of
special or oversized louvers for aesthetic reasons. Louvers
other than standard Zoneline exterior grilles may be used
on the Zoneline unit, however, these special louvers, or any
special exterior architectural treatments of the building
facade that may restrict the free circulation of condenser
airflow, should be referred to GE Application Engineering
for evaluation and approval. The following guidelines should
be followed in selecting a louver:
1. The louver must have a minimum of 65% free area.
ASHRAE defines free area as the minimum area of the
opening in an air inlet or outlet through which air can
pass. Percent (%) free area equals the X dimension
divided by the Y dimension.
2. The louver should be attached to the wall case in a
manner that will prevent recirculation of condenser
discharge air into the air inlet. If the louver is not
attached directly to the wall case, a field supplied splitter
or gasket is required between the chassis and the louver to
prevent recirculation.
It is important that the above criteria be followed since a
louver that is too restrictive or allows recirculation will
reduce the unit's capacity and efficiency, increase the
electrical current draw, cause intermittent operation due to
the compressor overload protector shutting the compressor
off, and cause failure of the compressor overload and
shorten compressor life. Using the unit with a grille that is
too restrictive or allows recirculation may constitute
improper installation. A scale drawing of the louver section
should be sent to GE Application Engineering. To assure
the proper performance of the Zoneline unit and comply
with Underwriters Laboratories requirements, it may be
necessary to send a sample louver section (at least 16" x 42")
to GE to be tested with the Zoneline unit.
Sample Calculations
x
Free Area (%) = x 100
y
1
F.A. % =
1.5
x = 1" y = 1.5"
x 100 = 66.7%