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SECTION 3 — GAF SOLAR ENERGY SYSTEM CONSIDERATIONS
AND REQUIREMENTS
Design Considerations
Slope limitations…
The GAF Solar Energy System is intended for use solely on roofs having a slope
between 4:12 and 12:12.
Deck mounting…
The GAF Solar Energy System is installed directly to the roof deck without
engaging rafters and requires underlayment as specified in these instructions. It cannot be
installed over shingles.
Deck thickness and fastening...
The roof deck must be a minimum of 15/32 inches (11.9 mm)
thick plywood or 7/16 inches (11.1 mm) OSB decking as recommended by APA – The Engineered
Wood Association. Wood plank decking must be well-seasoned and supported having a maximum
1/8 inch (3 mm) spacing at the ends and sides using minimum nominal thickness 1 inch (25 mm)
x maximum 6 inches (152 mm) lumber. The decking must have adequate nail-holding capacity and
a smooth surface. Boards with a nominal thickness of 1 inch (25 mm) and a maximum width of 6
inches (152 mm) are also acceptable. Installers should ensure that the deck is properly fastened
per local building code requirements.
Landscape orientation…
The GAF Solar Energy System is designed for landscape orientation only.
Solar Array wiring…
Refer to the Permit Design Drawings for the system wiring details. The
system electrical design is outside the scope of this manual.
Operating temperature…
The GAF Solar Energy System has an operating temperature range of -
40°F to +185°F (-40°C to +85°C).
DC electrical output...
Under certain environmental conditions, the GAF Solar Array may produce
more current and/or voltage than reported at standard test conditions (irradiance of 1000 W/m²,
AM 1.5 spectrum, and a cell temperature of 25°C [77°F]). The solar designer should account for
these conditions when designing the solar array.
Suitable ambient conditions…
Artificially concentrated sunlight shall not be directed on the Solar
Array. The modules must neither be immersed in water nor be exposed to continuous wetting
(e.g. by fountains). Exposure to salt or sulfur (sulfur sources, volcanoes) implies a risk of corrosion.
The system must not be used for maritime (e.g. boats) or automotive (vehicles) purposes. The
system must not be exposed to extraordinary chemical loads (e.g. emissions from manufacturing
plants). The GAF Solar Energy System should not be installed on stables.
Paint...
Do not apply paint to any part of the GAF Solar Energy System.
Roof Setbacks...
The GAF Solar Energy System requires the installation of a minimum of two full
rows of shingles at the eave and the ridge. The minimum allowable offset to the rake is 18" (457
Содержание DecoTech
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