Rinnai Prestige Operation & Installation Manual page 28

INSTALLATION - SOLAR COLLECTORS
Roof Area
As per AS/NZS 1170.2, domestic pitched and flat roof areas are classified into working areas. The diagram below
illustrate these areas.
Area 1
D
Example 1
Area 2
Area 3
In both examples :
A = min of
è A = 2.42
A/2 = 1.21 m
Rinnai
A
Area 2
Area 3
30° MAX
0.2 x 20.3 = 4.06
0.2 x 12.1 = 2.42
1 x 3.8 = 3.8
A = minimum of 0.2 x B, 0.2 x D and 1x h
Area 1 - Internal of roof.
Area 2 - Intermediate area, wind pressures increased
by 1.5 times.
Area 3 - Roof edge including corners, wind pressures
increased by 3 times. For installations in roof area
3, a minimum of 0.5m from the edge of the roof is
recommended.
For more information on how to classify specific roof
area installations see AS/NZS1170.2 or consult a
certified structural engineer.
Some examples are shown below.
28
Example 2
Area 3
Area 2
Area 1
Split Solar OIM