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Important Installation Information
Envirosun AS Installation Manual Rev1a PVNW.docx
Page 13
4.9.2
Shading
Careful site inspection is required to ensure the selected location is not subjected to
shading from adjacent trees or buildings throughout the day, but particularly between 9am
and 3pm, the highest solar input times. Shadows are longer in winter than in summer so
a site that is free of shadows from adjacent objects in summer may have some shadows
in winter.
4.9.3
Storage tank location
The solar water heater should be located as close as possible to the location which uses
the most hot water e.g. the bathroom or kitchen. This is to reduce energy losses which
may occur if the pipe work between the solar water heater and the point of usage is too
long.
4.9.4
Collector inclination
To achieve optimum performance the solar water heater should be installed on a roof
pitch of greater than 10° and less than 30°. Installations on a roof where the roof pitch is
greater than 30° will require additional support at the storage tank to prevent it moving
downward during and after installation. If the roof pitch is less than 10°, the system will
require a mounting frame to increase the pitch above 10°. Air can accumulate in
installations below 10° and may not circulate effectively. Additionally the collector glass
will not self-clean during rainy periods.
4.9.5
Roof structure
Ensure the roofing material and roof structure is capable of supporting the full load of the
collectors and trades personnel during installation. The structure should be capable of
supporting a 250kg point load. If this is not the case, additional bracing must be installed
before proceeding with the installation.
The Conergy AS hot water system can be installed on metal or tile roofs.
4.9.6
Roof area
To ensure adequate working access for the installation and future maintenance, an area
of not less than 500mm should be left completely around the system.
The system should be located 1m from all roof edges and peaks, with a minimum
distance of 0.5m.
Sufficient distance must be allowed up the roof from the storage tank for securing the
mounting straps.
