Introduction
The basic construction and the materials for construction are described in guideline b5. This guideline shows the practical aspects and experience from the installation.
Components description.
Hilti Hanger profile MFT-HP 200 (horizontal profile)
Main support structure for the BIPV modules.
Hilti Profile MFT-L 60 x 40 x 1,8 6m (vertical profile)
Main vertical profile to connect with the brackets on the bearing wall.
 |
Height | 60 mm |  |
Height | 40 mm |
| Width | 21.5 mm | Width | 60 mm | ||
| Length | 6 m | Length | 6 m | ||
| Thickness | 2 mm | Thickness | 1.8 mm | ||
| Material composition | EN AW-6063 T66 | Material composition | EN AW-6063 T66 | ||
| Surface finish | Flat | ||||
Aluminium Self-drill screw S-MD03S 5,5×32 mm
Used to connect the profiles.
Aluminium Self-drill screw S-AD01S 5,5×19 mm
Used to connect the profiles.
 |
Screw diameter | 5.5 mm |  |
Screw diameter | 5.5 mm |
| Length – L | 32 mm | Length – L | 19 mm | ||
| Drilling capacity | 2.1 – 6 mm | Drilling capacity | 1.5 – 4 mm | ||
| Thickness range | 0.5 – 17 mm | Thickness range | 1.5 – 10 mm | ||
| Washer size | 12 mm | Washer size | 12 mm | ||
| Screw type | Hexagon 8 | Screw type | Hexagon 8 | ||
| Corrosion protection | Stainless steel A2 | Corrosion protection | Stainless steel A2 | ||
| Washer type | None | Washer type | Pressed-on |
Hilti Bracket MFT-MFI 065 M 11
Bracket that is mounted on the wall (see d5 Mounting and installation) and used to mount the vertical profiles.
Anchor rod HIT-V-R M10x115
Anchoring the bracket to the wall.
 |
Length | 65 mm |  |
Dril bit diameter | 12 mm |
| Hole diameter – D | 11 mm | Anchor size | M10 | ||
| Material composition | EN AW-6063 T66 | Anchor length | 115 mm | ||
| Height | 86 mm | Material composition | Steel A4 (SS316) | ||
| Width | 68 mm | Environment | Outdoor | ||
| Insulation material | Polypropylene | ||||
| Thickness insulation material | 5 mm | ||||
Injectable mortar HIT-HY 270 330/2
Adhesive anchoring system for anchor fastenings in hollow and solid masonry.
Mesh sleeve HIT-SC 16×85
 |
Anchoring element | HIT-IC internally-threaded rods, HIT-SC mesh sleeves, HIT-S mesh sleeves, HIT-V threaded rods |
 |
Drill bit diameter | 16 mm |
| Environment | Indoor, damp conditions, Indoor, dry conditions, Indoor, ventilated facades, Outdoor |
Anchor size | 8/10 mm | ||
| Mixer types | HIT-RE-M | Anchor length | 85 mm | ||
| In-service temperature | -40 – 80 °C | Material composition | Plastic | ||
| Approvals / test reports | ETA, Fire | Environment | water | ||
| Application | Concrete (aerated), Masonry (hollow), Masonry (solid), Some types of natural stone |
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Framework installation
Wall conditions:
The wall must be even and free of obstacles, such as gutters, thick cable tubes or external pillars that would disrupt its flatness. In opposite case, please see remark , at the end of this document. Given the structure of the wall mentioned above [3cm Plaster – 12cm brick – 5cm DOW(Polystyrene) Insulation – 9cm brick – 3cm Plaster] and for the best force distribution, the mounting of vertical profiles at a distance of 400mm was proposed. The distance between horizontal profiles is determined by the hangers behind the modules, which is 400mm. The drill holes on the wall must be done with the use of a multi-line laser, according to the drawing below.
Installation steps
Installation of the brackets: drill holes in the wall and then inject the chemical mortar HIT-HY 270 330.
Step 1 : Position the bracket on the wall and step 2 : Drill the hole
Use the mesh sleeve HIT-SC 16×85 and a rod HIT-V-R M10x115
Step 3 – Inject the chemical mortar and insert the mesh sleeve and rod. Step 4 – Drill the rod until it reaches the bracket surface, fixing the system
Installation of the vertical profiles: the maximum recommended length of vertical profiles is 3.6 m. By using a cutter, a longitudinal cut must be made along the insulation material, introducing the vertical profile in the created cavity. Attention should be paid to fixed or flexible point of the construction design. A minimum distance of 10 mm should be left between vertical profiles.
Step 6 – Positioning of the vertical profile. For fixed points, the self-drill screw S-MD03S 5,5×32 is used to anchor the vertical profile to the brackets.
Step 7 – Screw the self-drill screw S-MD03S 5,5×32 in the holes aimed at fixed points.
For flexible points, the self-drill screw S-MD03S 5,5×32 is used to anchor the vertical profile to the brackets.
Step 8 – Screw the self-drill screw S-MD03S 5,5×32 in the holes aimed at flexible points.
Installation of horizontal profiles: the installation of the hanger profile MFT-HP 200 is performed anchoring it to the vertical profile by using the self-drill screw S-MD03S 5,5×32 in the exact measured points, in order to respect the correct positioning of the façade modules.
Step 9 – Anchoring of the hanger profile to the vertical profile, using the self-drill screw S-MD03S 5,5×32
Mounting of the PV panels
Start mounting the VF panels, one-by-one on the horizontal profiles and interconnect the electrical cables in strings, according to the electrical diagram.
The VF panels are hanged on the horizontal profiles, by sliding the pre-fixed hooks into the profile. See Picture below. No screws are needed, since the friction between rail-hook provides the necessary fixing.
Fasten all cables on the rails with tire-up, so that no cables are left loose or moving. See pictures below.
Spacers (Optional)
In case there are obstacles on the wall surface, protruding of it and thus disrupting its flatness, such as gutters, thick cable tubes or external pillars, certain spacer elements should be placed between the wall and the mounting pad of the framework.
This case applies in the VF mounting framework of the demo site in Pikermi, due to existence of gutters with thickness 120mm between two continuous wall parts and due to different protrusion of every wall part. This last reason indicates the use of two spacers together in one wall part and one spacer in the other wall part, in order to bring the PV framework in a straight line in front of the entire wall.
The spacers have dimensions of 40 x 40 mm and are shown in the picture below. The length can vary according to the needs for a steady fixing on the base pad or rails.
The left picture shows two spacers and the right picture shows one spacer.
Tools
- Electricity Generator
- Electric cutter
- Mechanical level
- Screwdrivers
- Wrench
- Rule
- Scaffolding
Safety equipment
- Protection glasses
- Safety shoes
- Gloves
- Safety helmet
- Safety belt
Text written by HERON, Greece
