TRITEC FAQ Mounting Systems

On our support website, we will answer all your questions around the subject of PV mounting systems. In our FAQ section, we have put together useful information about mounting options, types of roofs, and the quality of TRITEC photovoltaic mounting systems. You also have the opportunity to ask us questions. Our TRITEC product management is looking forward to your e-mail!

TRI-STAND

What is the TS bending tool and what is it used for?

Answer: The TS bending tool has two functions. First, it is used with the insertion system and keeps rails from wandering due to heat and cold. To this end, TS profiles are to be bevelled left and right of a SafeClick provided in the middle of the rail. For more information, see the TRI-STAND Installation Instructions. The second function of the bending tool is the removal of a clicked-in TS rail.

Which solar modules can be used for the insertion system?

Answer: Basically, the manufacturer for the insertion system must release all solar modules because not every module is suitable in terms of frames and bearing capacity. In parallel, the modules must also be released by TRITEC since the drainage openings of module frames may not be covered by the TS profile. The certificates of non-objection for the modules in the TRITEC product range are provided in our pv product catalogue.

How is the TS profile length determined with the insertion system?

Answer: (Module insertion width + 2mm) x number of modules side by side.

How is the vertical universal profile length determined in the insertion system?

Answer: (Module insertion width + 11.5mm) x number of modules on top of each other + 69mm.

Is horizontal module mounting possible?

Answer: For the insertion system, horizontal module mounting is possible without any restrictions – with the corresponding manufacturer's release. For the clip system, horizontal mounting is possible either in the two-layer clip system or by clipping on the short side of the module. In the latter case, the corresponding manufacturer's release is also necessary. For more information, see the TRI-STAND Installation Instructions.

What needs to be taken into account when using TRI-STAND on shingle roofs?

Answer: Hanger bolts are used to fasten the sub-structure on shingle roofs. These bolts must be centrically set into the counter-battening. Asbestos-containing slates may only be processed if corresponding regulations are complied with. Special hanger bolts are available for the use of TRI-STAND on Eternit cement shingles.

What needs to be taken into account when using TRI-STAND on corrugated sheet roofs?

Answer: With purlin roofs, the module is horizontally mounted for clip mounting, as a standard. Vertical mounting is possible either in the two-layer clip system or by clipping on the short side of the module. In the latter case, the corresponding manufacturer's release is necessary. Additionally, be sure to select the correct hanger bolts by taking into account the required minimum dimensions of the fastening timber.

What needs to be taken into account when using TRI-STAND on sheet metal roofs?

Answer: Carefully check the values for wind suction and pressure. Select as many fastening points on the roof as possible since the individual standing seams can accept relatively little load. For the clip system, horizontal mounting of the module is possible either in the two-layer clip system or by clipping on the short side of the module. In the latter case, module release by the manufacturer is necessary.

What needs to be taken into account when using TRI-STAND on trapezoidal sheet roofs?

Answer: Measure precisely the module field by means of the drilling jig since the screws of the trapezoidal sheet roof may not collide with the SafeClick rivets. For the insertion system, horizontal module mounting is possible without any restrictions – with the corresponding manufacturer's release. For the clip system, horizontal mounting is possible either in the two-layer clip system or by clipping on the short side of the module. In the latter case, the corresponding manufacturer's release is also necessary.

With regard to large-sized installations, how can the tension of profiles due to temperature fluctuations be limited?

Answer: For installations with the insertion system which are wider than 12m, the UP-C connector is tightened only on one side. Make sure that the universal profiles have at least 3mm clearance between them. For installations with the insertion system which are wider than 6m, the TS-C connector is tightened only on one side. Make sure that the TS insertion profiles have at least 3mm clearance between them. With the clip system, the universal profile must end after 12m at the most, and a new installation sections must be started.

TRI-STAND Aero

On which types of roof can TRI-STAND Aero be used?

Answer: TRI-STAND Aero is designed as a flat-roof system which can be used on gravelled and green roof surfaces as well as on membrane and bitumen roofs. Additionally, special solutions are possible on pitched sheet folding joint roofs. In this respect, the UP-L profiles are mounted with sheet metal folding Kalzip or Zambelli clamps – either longitudinally (for roofs with an East-West orientation) or transversely (for roofs with a southern orientation). With trapezoidal sheet metal roofs, the UP-L rail is replaced by the UP-TS rail, and the connection to the trapezoidal sheet is effected via special SafeClicks and sealing rivets.

What needs to be taken into account when using TRI-STAND Aero on trapezoidal sheet roofs and on sheet metal roofs?

Answer: The design must be provided in consultation with TRITEC since such special solutions cannot be designed by means of TRI-DESIGN. For roofs with a southern orientation, support is provided longitudinally to the profiles, for roofs with an East-West orientation transversely to the profiles. The bolt for the UP-TS rail is fastened with sliding nut and hexagonal screw. In case of transverse mounting, the wind baffle plate is attached to the inclined UP-L profile by means of a sliding nut, hexagonal screw and, if necessary, a washer. One additional bolt is sufficient for longitudinal mounting. In case of supports transversely to UP-TS profiles, the TS-F angles must be machined at the customer's so that they rest planarly on the UP-TS rail. The maximum possible module load of 5400 N/m2 may be restricted by module properties and the location of the PV system. Only modules with installation holes can be used.

Mounting tip for TRI-STAND Aero on flat roofs

For faster mounting, the spaces of TS-F angles are marked on the bottom rails by means of gauges.

TRI-ROOF

When is an underlining film recommended?

Answer: An underlining film is always recommended since there might possibly be condensation under the module and it may eventually drip into the roof via installation boxes.

What needs to be taken into account with underlining films?

Answer: The underlining film must be built in such that accumulating water is discharged under the module field without any damage.

Is the underlining film included in the scope of delivery?

Answer: This is not included in the scope of delivery. If none is available, it should be built in by a specialist, such as a roofer or a carpenter.

What are TR-D spacers and what are they used for?

Answer: The TR-D spacers are horizontal module displacement safeguards. With TRI-ROOF systems, these are each screwed in left and right before the last module of a row and pushed up to the lower SafeClick. For horizontal mounting, the TR-D spacer is to be used after every third module, and for vertical mounting after every fourth module.

Is the sheet metal flashing included as a standard in the scope of delivery?

Answer: The cladding is only permitted in connection with standard tiles – no bitumen shingles, fibre-cement panels, trapezoidal sheet metal roofs and slate roofs.

Are there restrictions with regard to the roof construction when using TRI-ROOF?

Answer: TRI-ROOF always needs a horizontal sub-structure, such as wooden battens, wooden purlins or steel purlins.

How is the joint formation provided?

Answer: On the lower UP-I profile, TRI-ROOF special adhesive for ridge sheets is applied as an 8mm string over the entire rail width. The rail section to be connected is pressed into the adhesive and screwed from the top by means of a flat connector, 2 sliding nuts M10 and 2 hexagonal nuts M10 x 25 A2. If this is not possible because there is a SafeClick on the joint, the flat connector may also be connected laterally or on the bottom in the grooves by means of hammerhead screws M10 x 20 A2 and self-locking nuts M10 A2. In case of system depths greater than 12m, the UP-I joint is pushed together to 5mm, the 8mm adhesive string is applied, and the flat connector is fastened only on the lower UP-I rail to minimize the stresses due to temperature changes. If, in this type of joint, there is a SafeClick on the UP-I profile, the flat connector is fastened on the underside of the upper UP-I profile.

TRI-VENT

What needs to be taken into account for vertical mounting?

Answer: For vertical mounting, only modules with installation holes may be used. With bead spaces between 150 and 180 mm, the longest profile is used; the carrier profile thus rests on 3 raised beads and will be riveted together with the first and the last raised bead.

Contact Mounting Systems

Head of Product Management

Simon Schmidt

+41 61 264 00 25

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Product Manager Mounting Systems

Bernd Hertter

+49 7044 90379 323

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TRIENERGY Deutschland GmbH

Fischerinsel 1
D-79227 Schallstadt

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