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2.0
Installation of solar collector
2.2
General assembly notes
These instructions relate to the installation of the
Potterton Solar in roof flat plate solar collector panels.
Parts are provided for fixing to profiled, flat or slate tile
roofs, not all parts will be required for each roof type.
Refer to the parts list for each roof type to establish the
correct components that need to be used in each case.
All other equipment must be installed as per detailed
in the Potterton Solar Installation Guide.
Use only Potterton Solar mounting systems. Use of other
brackets/mounting systems will invalidate the warranty
and may result in an insecure and dangerous panel
installation.
The mounting battens must be fixed to the roof
structural members.They must never be fixed to roofing
laths. If suitably positioned structural members are not
available or, if they are of a section that may be weakened
by the inserting of the fixing screws, additional noggins
should be inserted between the structural members.
These must be at least the same cross section as the
structural member.
Use only the corrosion resistant fastenings supplied.
Holes through any roof waterproofing materials should
be sealed with an appropriate UV and weather resistant
Fig. 2
sealant.
Structure
The collectors may only be mounted on sufficiently
load-bearing roof surfaces and substructures. It is
essential that the structural load-bearing capacity of the
Noggin
Rafter
roof and the substructure must be assessed before
mounting the collectors. Particular attention should be
paid to the quality of the (timber) substructure in terms
of the stability of the screw joints necessary for installing
the collector mounting brackets. Where roof structure is
not strong enough noggins must be inserted to accept
fixing screws.The roof structure must be able to take the
wind and snow loads that can occur. (Note: 1m
2
powder
snow ~ 60kg / 1m
2
wet snow ~ 200kg).The assessment
should also take into account any special features of the
particular site that could lead to increased loads (air jets
or eddy formations, etc).There must be at least 1m
distance from roof ridging or edges.
The panels must be weatherproofed using the flushing
kit provided.
Lightning protection / Equipotential bonding of
the building
It is not necessary to connect collector arrays to the
lightning protection of the building. For installations on
metal substructures at the installation site, authorised
lightning protection specialists must be consulted. The
metal pipes of the solar circuit must be earth bonded
to the main earthing circuit by means of a conductor
(green/yellow) with a cross-section of at least 6mm
2
.
Potterton Solar - Solar Thermal Domestic Hot Water System
7
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