JJG
Montagehinweise
Assembly instructions
Istruzioni di montaggio
Instructions de montage
Instrucciones de montaje
10
Instructions for installation and transport
The installation may only be carried out by qualified personnel. Only the supplied material should be used for the
installation. Please inform yourself about the applicable local norms and regulations before mounting and
operating the solar system. Note: Installing a collector array signifies an intervention into an existing roof. Roof
coverings, e.g. tiles, shingle and slate, especially in the case of converted and inhabited loft spaces or roofs with
less than the minimum slope (with regards to the covering), require additional on-site measures, e.g. sarking, as
security against water penetration caused by wind pressure and driving snow. For large collector arrays it is often
advantageous to mount the collectors on a special supporting structure made of steel channels. This substructure
and its connections to the main building structure should be designed on-site in accordance with the local
conditions. Alternatively, it is possible to install the collectors without perforating the roof membrane by using
concrete ballast with guys. The collectors are mounted on concrete blocks. Rubber mats should be used if
necessary to protect the roof membrane against damage and to increase the friction between the roof and the
ballast blocks. In addition, it is necessary to secure the collectors with 5mm steel cables (minimum tensile strength
1450N/mm²) to absorb any peak wind loads. The permissible roof loading and the fixing points on the building
for the steel cables should be verified on-site by a structural engineer.
The use of a carrying strap is recommended for transporting the collector. The collector must not be lifted at the
connections or on the threading. Avoid impacts and mechanical action on the collector, especially on the solar
glass and the pipe connections. If the aluminium tray collectors have a protective coating, this must be protected
from sunlight and removed just before installation.
Structure
The collectors may only be mounted on sufficiently load-bearing roof surfaces and substructures. The structural
load-bearing capacity of the roof and the substructure must be tested on-site before mounting the collectors.
Here, 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 collectors. In particular, it is essential to have the entire collector structure
verified at the installation site according to DIN 1055, Part 4 & 5 or according to country-specific regulations in
regions with heavy snowfalls (Note: 1m³ powder snow ~ 60kg/1m³ wet snow ~ 200kg) or in regions with high
wind speeds. The assessment should also take into account any special features of the particular site that could
lead to increased loads (foehn wind, air jets or eddy formations, etc). Collector arrays should always be installed
in such a way that any possible snow piles caused by snow trap grids (or the position of the collectors) do not
reach the collectors. Here must be at least 1m distance from roof ridging or edges.
Lightning protection / Equipotential bonding of the building
In accordance with the lightning protection standard ÖVE/ÖNORM EN 62305 Part 1-4 the collector array cannot
be connected to the building's lightning protection. A safety distance of at least 1 m must be maintained from any
possible adjacent conducting object. For installations on metal substructures at the installation site, generally
qualified electricians must be consulted. To carry out a building potential equalisation, the metal tubes of the solar
circuit and all collector cases or fastenings must be connected to the main potential equalisation bus by a qualified
electrician in accordance with ÖVE/ÖNORM E 8001-1 or the country-specific standards.
Connections
(screw connections)
Depending on the design, the collectors must be connected with one another and/or the connection pipes using
screw fittings (1" internal/external thread) with flat-face sealing. Ensure correct placement of the flat gaskets. If
flexible pipes are not used as connectors, precautions must be taken to protect the connection pipes against
temperature fluctuations caused by heat expansion (expansion bends/flexible piping). In this case, no more than
6 collectors may be connected in series. Larger collector arrays must be assembled with expansion bends or
flexible members inserted in the links (IMPORTANT: check the pump design). When tightening the connections,
always apply counter-pressure with a wrench or another spanner to prevent damage to the absorber.
Collector inclination / General notes
The collector is suitable for angles between 15° (minimum) and 75° (maximum). Steps must be taken to ensure
that water and other contaminants such as dust, etc. are prevented from getting into the collector connections
and ventilation holes.
Connecting support rails
If several support rails are to be mounted in series, they must be connected with the connectors above and below.
Warranty
Warranty claims can only be made if the supplier's own antifreeze is used and maintenance is carried out correctly.
