Exterior Grilles
Four styles of outdoor grilles are available for exterior treatments. The standard stamped aluminum grille (RAG60), the molded architectural louvered exterior grilles
RAG60 Outdoor Grille - The standard exterior grille is made of durable aluminum to protect chassis components and prevent air recirculation.
RAG60 Outdoor Grille
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
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 beRAG67 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.
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
Free Area (%) = | x | x 100 |
| x = 1" y = 1.5" | ||||||||||||||||
y |
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| F.A. % = | 1 | x 100 = 66.7% | ||||||||||||||
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