MHG Heating Ltd ©
MHG Heating Ltd. Unit 4 Epsom Downs Metro Centre, Waterfield Tadworth Surrey KT20 5LR
P: 08456 448802 F: 08456 448803 E:[email protected] W:
www.mhgheating.co.uk
01/01/10
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11. Collector mounting on flat roof general
remarks
The ground mounting installation kit is for mounting the FL/K 420 type collectors
vertically on a flat surface. It can also be used on roofs with a slight slope.
Installation can be carried out with a variable tilt angle of between 45° and 60°.
Tilt angles of between 20° and 45° are also possible using additional
components. The collectors must be mounted at an angle of more than 20°.
Attention should be paid to the sealing of the roof. Drilling into the roof might
not be permitted.
If this is the case, concrete slabs must be laid as a foundation on the roof on site.
These slabs must be heavy enough to withstand the wind loads at the location.
In case of an uneven surface there is the option of using a continuous U-rail as a
substructure
(see parts list).
Extra materials may be required for the roof opening for the collector array
connections.
This must be provided on site. In the case of a flat-roof installation, it is also
necessary to plan a means of transporting the collectors onto the roof.
When connected hydraulically, up to 6 FL/K 420 collectors can be connected in
series. If more than 6 collectors are connected, this must be done using a
combination of series and parallel connection.
We recommend declaring the solar energy system to your insurer as added value
to the building, and taking out insurance against lightning and possibly glass
breakage.
Safety instructions
The installation and safety instructions must be observed and adhered to.
The accident prevention regulations of the trade associations must be adhered to,
particularly when working on the roof. Where there is a danger of falling,
precautions must absolutely be taken.
The entire solar energy system must be installed and operated in accordance with
the recognized technical regulations.
Due to snow and wind loads, extreme forces can be at work on the collector
fixings.
Attention should therefore be paid to carrying out the installation carefully.
The roof construction must be capable of withstanding the additional load.
Furthermore, care must be taken that the snow and wind loads are discharged into
