INSTALLATION - PLANNING
23
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Inclination of modules should be approximately equal to the local latitude angle. The latitude of some
Australian cities is shown in the “Latitude of Some Australian Cities” on page 23. Modules may be
installed at the roof angle for simplicity of installation and appearance, however, if inclination varies
by ±15º or more from the correct inclination, performance losses of 4% or more will occur.
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Modules should be inclined at an angle of at least 10° to support the self cleaning function of the
glass.
•
Losses for incorrect orientation and incorrect inclination will be compounded.
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If the roof angle is flat, adjustable or fixed tilt legs should be considered to optimise inclination
depending upon area.
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For an installation at right angles to (across) a tile roof pitch, landscape tile roof hooks are required.
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Each module and its fittings including racking weighs approximately 25 kg.
LATITUDE OF SOME AUSTRALIAN CITIES
Adelaide
35°S
Cairns
17°S
Hobart
42°S
Port Hedland
20°S
Alice Springs
24°S
Canberra
35°S
Mildura
34°S
Rockhampton
24°S
Brisbane
27°S
Darwin
12°S
Melbourne
38°S
Sydney
34°S
Broken Hill
31°S
Geraldton
28°S
Perth
32°S
Townsville
19°S
WIND REGION
Use the wind region diagram shown below to determine the wind region of the installation site.
Wind region notes:
Wind regions are predefined for all of Australia by Australian Standard AS/NZS 1170.2. The Wind Region
has nothing to do with surrounding topography or buildings.
Most of Australia is designated Region A which indicates a Regional Ultimate Basic Wind Velocity of 45 m/s.
Some areas are designated Region B (57 m/s). Local authorities will advise if this applies in your area.
Region C areas (66 m/s) are generally referred to as Cyclonic and are generally limited to northern coastal
areas. Most Region C zones end 100 km inland.
Region D (80 m/s) Australia's worst Cyclonic Region between Carnarvon and Pardoo in WA.
