Operating Instructions and Installation Guide
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The performance of any solar hot water system is determined by the way that the system is
installed. In Australia, the solar collectors should face the equator (North) as shown below.
Figure 2.1.4.2 Orientation Angle of Collectors
This orientation is not practical, collectors facing within 45 degrees from North (between
North-East and North-West) area acceptable, with a reduction in efficiency of approximately 5%.
If the bulk of hot water consumption occurs before 2 pm face the collectors in a North - Easterly
direction. If the bulk of hot water consumption occurs after 2 pm face the collectors in a North
Westerly direction.
Orientation Angle of Collectors The inclination of the solar collectors should ideally be the
same as the latitude angle of the site. Inclinations within 20 degrees of the latitude angle of the site
are acceptable, with a reduction in efficiency of approximately 5%.
Figure 2.1.4.3 Inclination of Collector
Table 2.1.4.1 is the latitude and longitude of Australia cities for your reference.
Table 2.1.4.1 latitude and longitude of Australia cities
Latitude degrees
Longitude shift from local time
Longitude degrees
Rockhampton
−
23.4
0.48
Alice Springs
−
23.5
−
8.6
Sydney
−
33.4
1.2
Melbourne
−
37.8
−
5.03
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