THERMOROSSI DB-0, Manual

Page: 9 / 44

EN
DB-0
Montagehinweise
Assembly instructions
Istruzioni di montaggio
Instructions de montage
Instrucciones de montaje
9
General and transport instructions
The mounting system is suitable for tiled roofs only. Installation must only be carried out by qualified personnel. The entire information
in these instructions is intended exclusively for such qualified personnel. Only the supplied material should be used for the installation.
Prior to starting installation and operation of the solar collector system, please inform yourself about the applicable local standards
and regulations. 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 influences on the collector, in particular on the solar glass, the rear
panel and pipe connections.
Statics - tiled roofs
The collectors may only be mounted on sufficiently load-bearing roof surfaces and substructures. It is imperative that the static load
bearing capacity of the roof or substructure is checked in terms of local and regional conditions prior to installation of the collectors
by the customer, if necessary through the involvement of a structural engineer. Particular attention should be paid to the quality of
the (timber) substructure in terms of the stability of the screw connections necessary for fastening the collectors. The checking of the
entire collector structure by the customer as per DIN 1055 part 4 and 5 or as per the applicable country-specific regulations is par
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ticularly important in areas with heavy snowfall (note: 1 m³ powder snow ~ 60 kg / 1 m³ wet snow ~ 200 kg) or in areas exposed to
high wind speeds. The assessment should also take into account any particular circumstances at the place of installation (foehn wind,
air jets or eddy formation etc.) which can lead to increased loads. When selecting the installation site it should be ensured that the
maximum load is not exceeded either by snow or wind forces. As a rule, collector arrays must be installed such that any possible
collection of snow is prevented from reaching the collectors by snow barriers (or through special forms of installation). The distance
to roof ridges/edges must be at least 1 m.
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 measures by the customer, e.g. sarking membranes, as security against water penetration caused by wind pressure and
driving snow.
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
Connect the collectors using the cutting ring screw connections. If flexible pipes are not used as connectors, precautions must be
taken to protect the connection pipes against temperature fluctuations caused by heat expansion, e.g. expansion bends and flexible
piping (see Connecting the collectors to one another/Operational recommendations). Larger collector arrays must be assembled with
expansion bends or flexible members inserted in the links. (IMPORTANT: check the pump design). When tightening the union nuts,
always balance (counter) the torque with a pipe wrench or another spanner to prevent damage to the absorber.
Collector angle / General notes
The collector is suitable for angles between 15° (minimum) and 75° (maximum). The collector connections and the ventilation open
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ings must be protected against the penetration of water as well as against contamination through dust etc.
Legal guarantee
Legal guarantee claims can only be made if the supplier's own antifreeze has been used and maintenance has been carried out cor
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rectly. Installation by qualified personnel with absolute adherence to the instructions is a prerequisite for the justification of claims.