Schweizer MSP-FR-EW User manual

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Solar systems of Schweizer:
Mounting instructions – MSP-FR-EW at
roof PV mounting system
Legend to mounting instructions
proMSP
Observe additional information Audible clicking sound
!
Caution: check carefully Mounting direction of part
Correct operation Tool type / required torque
Incorrect operation Part identication

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Solar Energy Systems
Mounting instructions – MSP-FR-EW at roof PV mounting system
Standards and technical guidelines
The Schweizer MSP-FR-EW installation system meets the following standards amongst others:
DIN EN 1990:2010-12 Eurocode 0: Basis of structural design
DIN EN 1991-1-1:2002-10 Eurocode 1: Actions on structures – Part 1-1: General actions on structures
– Densities, selfweight and imposed loads for buildings
DIN EN 1991-1-3:2010-12 Eurocode 1: Actions on structures – Part 1-3: Snow load including national
annexes
DIN EN 1991-1-1:2002-10 Eurocode 1 Part 1-4: Wind actions including national annexes. The specic
pressure coefcients have been determined experimentally in wind tunnel
tests.
DIN EN 1999-1-1:2010-05 Eurocode 9: Design of aluminium structures
DIN EN 18195-1:2008-11 Water-proong of buildings – Part 2 - Materials
It has been tested in accordance to the following guidelines:
VDE 100
Aerodynamic study according the guidelines of WTG.
Intended correct use
The Schweizer MSP-FR-EW installation system is designed exclusively for fastening of framed photovoltaic
panels on building with a at roof with a gradient not greater than three degrees. Any other use shall be con-
sidered a violation of the intended use.
Observance of the information provided in these installation instructions is included in the denition of the in-
tended use.
Schweizer cannot be held liable for damage or loss resulting from the failure to observe these installation ins-
tructions, especially the safety instructions, or through misuse of the product.
Responsibilities of the customer and installer
The customer and installer are responsible for observing the following relevant points:
− Ensuring compliance with all relevant accident prevention regulations and industrial safety provisions (or
equivalent applicable regional standards).
− BGV A1 – principles of accident prevention
− BGV A3 – electrical installations and equipment
− BGV C22 – construction work
− Ensuring installation is only performed by persons with the appropriate technical skills and basic know-
ledge of mechanics.
− Ensuring that those commissioned to perform the work can evaluate their assigned tasks and recognize
possible risks.
− Ensuring that those commissioned to perform the work are familiar with the system components and logic
of installation.
− Ensuring that the installation manual (instructions for use) is available during installation. The installation
manual is an integral part of the product.
− Ensuring that the proMSP software report (for the specic project being installed) is available during instal-
lation. The software report is an integral part of the product.
− Ensuring that the installation manual and software report, and in particular the safety instructions, are read
and fully understood by those commissioned to perform the work.
− Ensuring that the permissible installing conditions are observed. Schweizer cannot be held liable for da-
mage or loss resulting from exceeding these conditions.
− Ensuring correct installation in accordance with the installation instructions/ installation manual and soft-
ware report) and providing the necessary tools when required.

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Ernst Schweizer AG, Metallbau
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Mounting instructions – MSP-FR-EW at roof PV mounting system
− Ensuring that suitable lifting gear is used for installation as appropriate.
− Ensuring that visibly damaged components are not used and are replaced.
− Ensuring each component is used as intended and indicated in the instruction manual, and that compo-
nents are not installed in a way as to perform other or additional tasks.
− Ensuring that only genuine Schweizer components are used when parts need to be replaced. Otherwise all
warranty claims will not be recognized.
− Ensuring that only Schweizer MSP-FR-EW, or other indicated Schweizer MSP components, are used for
the installation.
− Ensuring that the roof membrane is not damaged in any form by dropping, dragging or allowing the penet-
ration of components of the installation system.
− Ensuring that regular scheduled maintenance work is performed once every year, including inspecting of
screw connections, mechanical connections, positioning of protection sheets, cabling, electrical equaliza-
tion, and the condition of the roof membrane.
− Where necessary, it is the responsibility of the customer to adapt the existing lightening protection system
of the building in accordance with current technical rules and regulations.
− Prior to operating the PV system, the customer must ensure that the whole system, as well as each indivi-
dual panel, have the adequate electrical potential equalization. This should be tested by an appropriate
specialist.
− The Schweizer MSP-FR-EW system may be included in the design of, and connected to, the electrical po-
tential equalization system, by correctly tting a suitable earthing clamp or screw (not supplied by Schwei-
zer). The customer must ensure compliance with current rules and codes.
− The standards (or the equivalent applicable regional standards) for the design and installation of lightning
protection, grounding and equipotential bonding must be observed.
− DIN EN 62305 – lightning protection
− DIN VDE 0185 Parts 1-4 – lightning protection
− DIN VDE 0100 Part 410 – grounding
− DIN VDE 0105 – operation of electrical installations
− DIN VDE 0298 – electric cables
− The customer is responsible for ensuring that the roof where the system is installed is designed and const-
ructed so as to be able to adequately and safely withstand the system. This includes, amongst others, the
structural capabilities of the roof, the condition and compatibility of the roong membrane, the required
long-term bearing strength of the insulation material, and the adequate drainage of water away from the
roof surface. Schweizer cannot be held liable for damage to roofs where the roofs are not adequately desi-
gned or constructed to take the system installation.
− The customer is responsible for ensuring that the installation is in compliance with current national regulati-
ons and codes, including amongst others, maintaining the necessary edge distance to the roof, the provi-
sion of safety barriers, the restriction of access during operation, or precautions for expected dynamic
loads or specic conditions such as earthquakes and severe weather patterns.
− If the system is fastened to the building in any form, it is the responsibility of the customer to ensure the
adequate design and provision of that fastening.
− The rules and regulations of the Central Association of German Roofers (ZVDH) (or equivalent applicable
regional standards) pertaining to working on roofs must be observed.
− DIN 18338 roong work
− DIN 18451 scaffolding work
− Guideline VDS 2023 on damage prevention – electrical installations in buildings or structures with mainly
ammable materials, and DIN 4102 – re behavior of building materials and building components (or the
equivalent applicable regional standards) must be observed.

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
Telefon[phone]
Telefax [phone]
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Solar Energy Systems
Mounting instructions – MSP-FR-EW at roof PV mounting system
Basic safety instructions
The following basic safety instructions and warnings form an essential part of these instructions and are of
fundamental importance when handling this product:
− Working clothing which complies with national regulations must be worn.
− Applicable industrial safety provisions must be observed.
− Ensure that all electrical work is carried out by an electrically qualied specialist. Observe all relevant regu-
lations and codes.
− The presence of a second person who can provide help in the event of an accident is obligatory during the
entire installation work.
− Keep a copy of these installation instructions to hand in the immediate vicinity of the system for use by
those commissioned to perform the work.
− Until the PV installation is fully completed and in an operational state, all incomplete sections, components
and materials must be secured in accordance with the prevailing regulations.
Installation conditions
The Schweizer MSP-FR-EW installation system is designed for the following conditions:
− To withstand all prevailing wind and snow load scenarios. However, it must be installed in the correct man-
ner for the conditions for the specic location and project, especially the calculation of any additional ballast
required.
− For fastening of framed photovoltaic panels, with a frame height between 30-50 mm.
− On at roofs with an inclination not greater than three degrees.
− For panel sizes of length 1495-1159 mm, 1620-1682 mm and 1945-2005 mm and width 950-1010 mm and
1040-1095 mm.
− A maximum block size of 13.63 meters (north-south direction) by 13.20 meters (east-west direction) is per-
mitted to avoid unnecessary stresses on the membrane roof covering from thermal expansion.
− The minimum allowable friction coefcient between the protection sheet and the roong membrane is 0.3.
− Suitable for environmental conditions within the range of normal environmental corrosively (e.g. at least 1
km from sea coasts), and in more corrosive environments (e.g. C4) if specic maintenance tasks are adhe-
red to (guidelines/ instructions available from Schweizer upon request).
− For all membrane roof coverings, including bitumen, as well as concrete roof surfaces. However, Schwei-
zer is not responsible for ensuring the continued validity of the warranty provided by the roof covering ma-
nufacturer.
− If installing on gravel covered roofs, the gravel must be removed during installation and replaced after com-
pletion so as the protection sheet is in direct contact with the roong membrane.
− For panels that permit clamping on the short edges in the corner location (Schweizer can provide a list of
approved panels on request). Schweizer is not responsible for ensuring the continued validity of the war-
ranty provided by the panel manufacturer. However, Schweizer will support customers as much as feasibly
and practically possible in obtaining any necessary clamping approvals from panel manufacturers.
− For roofs that can adequately withstand the additional load from the PV system (as veried by, and within
the responsibility of, the customer). The calculated total load acting on the roof from the MSP-FR-EW sys-
tem includes the MSP mounting structure, the panels (as indicated in the design) and the required ballast.
All other loads are excluded (e.g. cables, non-Schweizer cable ducts, invertors etc.).
Installation preparations
An expert assessment of the roof must be obtained in order to verify the suitability of the roof for supporting a
PV system, including structural characteristics, construction standard, and condition.
If necessary, the roof should be tested for suitability, amongst others:

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Solar Energy Systems
Mounting instructions – MSP-FR-EW at roof PV mounting system
− Sufcient structural capacity for the additional loads arising from the PV installation.
− Consideration of the permissible bearing pressure capacity of the insulation material.
− Compatibility and condition of the roong membrane.
− Adequate water drainage and lack of water pooling.
− Condition of the roof (free from damage).
Prior to initiating the PV system installation, the roof must be:
− Brought to the minimal standards required.
− Thoroughly cleaned, with all dirt and debris removed.
− Free from snow and ice.
The customer must verify that the installing conditions required for MSP-FR-EW are satised. Ensure those
commissioned with the work are fully familiar with the design layout created. Distribute the material evenly on
the roof so as not to create concentrated loading. Make sure the required tools are available (a torque
wrench, battery powered screwdriver and a size 30 Torx attachment).
Installation
Fig. 1: proMSP software report
Note: The proMSP software report is created once the PV system has been designed using Schweizer
proMSP software.
1. Make sure the proMSP report is available on site and that those commissioned with the work are fully fa-
miliar with the design layout.
Figs. 2 and 3: Assembly of protection sheets to base proles
Note: This step is intended as a pre-assembly step that can be performed off the roof.
1. Separate pieces, of the required lengths, from the eece roll protection sheet (MSP-FR-EW-PSF, ) in the
required quantity (as indicated in the proMSP software report). Two different lengths may be required to
match the length of base proles (MSP-FR-EW-BP, ) used. The roll is divided into perforated sections
and can be easily pulled apart without the use of a knife or cutting tool.
2. Peal off the plastic sheeting from eece (MSP-FR-EW-PSF, ) in order to exposure the sticky stripes
3. Ensure the sticky stripes are facing upwards and lower the base proles (MSP-FR-EW-BP, ) into place.
The base proles should be positioned so as no edges extend beyond the outer edge of the protection
sheet (MSP-FR-EW-PSF, ). There should be an approximate 10 mm width of protection sheet extending
beyond all edges of the base proles.
Figs. 4, 5 and 6: Assembly of supports to base proles
Note: This step is intended as a pre-assembly step that can be performed off the roof. There may be two
lengths of base proles (MSP-FR-EW-BP, ) and the correct number of each match of support type, whether
high support (MSP-FR-EW-SH, ) and low support (MSP-FR-EW-SL, ), to lengths of (base proles (MSP-
FR-EW-BP, ) is indicated in the software report.
1. Click into place the high supports (MSP-FR-EW-SH, ) into the base proles (MSP-FR-EW-BP, ). The
supports should be approximately centrally located within the base proles, and must not overhang from
the edge. They should not be screwed into place at this time.
2. Click into place the low supports (MSP-FR-EW-SL, ) into the base proles (MSP-FR-EW-BP, ). The
supports should be approximately centrally located within the base proles, and must not overhang from
the edge.
3. Screw the low support (MSP-FR-EW-SL, ) into place using a screw (MSP-FR-S, ) with a torque of
10 Nm. Only one screw is needed per support.

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Telefax [phone]
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Mounting instructions – MSP-FR-EW at roof PV mounting system
Figs. 7A and 7B: Insert screws into connection channels
Note: This step is intended as a pre-assembly step that can be performed off the roof.
1. Position the screws (MSP-FR-S, ) into the connection channels (MSP-FR-EW-C, ) in the correct hole.
The correct hole is indicated in the software report.
Note: There are three lengths of connection channels and each length may require the use of different
holes. Additionally, the holes at each end may differ by a space of one. The connection channels are sym-
metrical in design, so it does not matter which end each hole position is used.
2. When positioned in place the screws (MSP-FR-S, ) should extrude approximately 2-5 mm through the
underside of the connection channels (MSP-FR-EW-C, ).
Figs. 8A and 8B: Layout components on roof and measure out starting point
1. The components should be laid out so as to avoid concentrated loads on the roof, and appropriately to
enable easy and quick installation.
Note: Short connection channels (MSP-FR-EW-C, ) run in the east-west direction and longer connection
channels run in the north-south direction. If two lengths of base proles (MSP-FR-EW-BP, ) are being
used, the shorter ones will be placed around the edges of blocks while the longer length base proles will
be used in the block centers.
2. Following the details in the software report, measure out the position of the starting lower support (MSP-
FR-EW-SL, ) and place it appropriately.
Note: Ensure the correct base prole (MSP-FR-EW-BP, ) length is used (it will be the shorter one if two
lengths are being used).
Figs. 9 and 10: Assemble connection channels
Note: No loose screws (MSP-FR-S, ) will be needed on the roof since they are all preassembled in the
preceding steps.
1. Fix the shorter connection channels (MSP-FR-EW-C, ) (running in the east-west direction) to the sides
of the high supports (MSP-FR-EW-SH, ) and low supports (MSP-FR-EW-SL, ), tightening the pre-as-
sembled screws with a torque of 10 Nm. The connection channels (MSP-FR-EW-C, ) can be xed either
side of the supports and in either direction.
2. Fix the longer connection channels (MSP-FR-EW-C, ) (running in the north-south direction) within the
high supports (MSP-FR-EW-SH, ) so that the support is also screwed onto the base prole (MSP-FR-
EW-BP, ), tightening the pre-assembled screws with a torque of 10 Nm. Always use the hole nearest the
edge of the high support for each connection channel.
Note: If any walking paths have been selected for the layout, refer to the software report to ensure correct
placement (location and channel length) for the walking path inclusion.
Fig. 11: Installation of additional layer of protection sheet
Note: This step is only required for roofs with a bitumen or EPDM roof covering. The software report will indi-
cate if this step is necessary.
1. Under each base prole (MSP-FR-EW-BP, ), position a second protection sheet piece (MSP-FR-EW-
PSF, ) of equal length to the protection sheet xed to the base prole, so that it sticks down onto the roof
surface. Subsequently, the two layers of protection sheets will be in contact with each other one-to-one.
2. If the base prole (MSP-FR-EW-BP, ) is positioned over an overlap of membrane layers, ensure the pro-
tection sheet (MSP-FR-EW-PSF, ) is level by providing additional layers of protection sheet as appropri-
ate.

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Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
Telefon[phone]
Telefax [phone]
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Mounting instructions – MSP-FR-EW at roof PV mounting system
Figs. 12A, 12B and 13: Position ballast
Note: Ballast is not needed for every project. This step is only necessary if the software report indicates that
ballast is needed. If ballast is required, it is very important to ensure the correct amount of ballast is positi-
oned in the correct locations. The ballast stones are not supplied by Schweizer.
1. Where needed, position either one or two ballast stones with the center of the appropriate high supports
(MSP-FR-EW-SH, ).
2. If more than 2 ballast stones are needed at any locations, install a second shorter connection channel
(MSP-FR-EW-C, ) on the opposite side of the supports, running from a low (MSP-FR-EW-SL, ) to a
high support (MSP-FR-EW-SH, ). The additional ballast stones can be positioned by laying them across
the two parallel connection channels in a perpendicular direction. It is important to ensure that the ballast
stones are not positioned in a manner that they are in contact with the roof membrane.
3. Ensure the ballast stones are positioned so that the panels do not come into contact with the stones once
installed.
Figs 14, 15, 16, 17 and 18: Provision of cable management
Note: Cable holders are supplied by Schweizer, other cable management components are optional.
1. For carrying the panel cables running in the north-south direction. The cable holder (MSP-FR-CH8, ) is
inserted into the high support (MSP-FR-EW-SH, ) and clicked into place by turning.
2. For possible carrying cables in the east-west direction. On the outside of the panel block, a cable tray can
be attached to the base proles (MSP-FR-EW-BP, at least 300 mm, )(spanning across two) and screwed
into place. Two screws (MSP-FR-S, ) are required per cable tray, each on a separate base prole.
3. Free running cable trays can be positioned by using additional base proles (MSP-FR-EW-BP, ) (with
correctly attached protection sheet) positioned at each end of the cable tray. Base proles can be shared
by two cable trays in series.
4. Free running cable trays can contain 90 degree turns. A longer base prole (MSP-FR-EW-BP, ) with cor-
rectly attached protection sheet (MSP-FR-EW-PSF, ) is needed.
Figs. 19A and 19B: Installation of grounding screws
Note: Grounding screws (MSP-FR-GS, ) are needed to create the electrical potential equalization of the
PV panels to the MSP-FR-EW mounting system. It is very important that at least one grounding screw is in
contact with every PV panel installed.
1. Under the location of every PV panel to be installed, a grounding screw (MSP-FR-GS, ) must be ins-
talled onto that lip of the low support (MSP-FR-EW-SL, ).
2. Where no PV panel will be in contact with a lip of a low support (MSP-FR-EW-SL, ), a grounding screw
(MSP-FR-GS, ) is not required.
Figs. 20, 21 and 22: Positioning PV panels
Note: Panels can only be installed in a landscape orientation.
1. Position edge of panel on lips of the low supports (MSP-FR-EW-SL, ) and lower other edge of panel
onto high support (MSP-FR-EW-SH, ).
2. Complete process for all panels to be installed.
3. The rst panel should be positioned so as to overlap the supports 30-40 mm in a north-south direction. If
necessary, slide the panel to achieve this overlap.
4. To enable the clamps to be positioned correctly, each subsequent panel should be placed with a 20 mm
gap to the previous panel in the north-south direction. Once all panels are in position, and prior to clam-
ping, it should be ensured that the overlap of each panel to the supports is 30-40 mm.

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
Telefon[phone]
Telefax [phone]
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Mounting instructions – MSP-FR-EW at roof PV mounting system
Figs. 23A, 23B, 24A, and 24B: Fixation of PV panels
1. Click into the supports the end clamps (MSP-PR-EC, ) (at the panel edges on the outer edge of the PV
blocks) and middle clamps (MSP-PR-MC, ) (locations between two adjoining panels).
2. Fix the panels into place by tightening the clamps with a torque of 10 Nm. The clamps positioned on high
supports (MSP-FR-EW-SH, ) should be tightened before tightening the corresponding clamps positi-
oned on the low supports (MSP-FR-EW-SL, ).
3. After tightening the clamps anges should overlap the panel frames by a minimum of 7 mm.
Fig 25: Cover cable trays
Note: This step shows an option for attaching cable trays. The cable tray covers are not provided.
Fig. 26: Grounding PV installation
Note: The equipment required for this step is not supplied by Schweizer. The method indicated is only a sug-
gestion, there are numerous ways to achieve this. The customer must decide how best to achieve a ground-
ing of the PV system.
1. Connect the earthing equipment by screwing into the side hole of a low support (MSP-FR-EW-SL, ).
Every PV block will need to be earthed individually.

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Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Mounting instructions – MSP-FR-EW at roof PV mounting system
1 2
4 5 6
7 8 9
11
3
10
MSP-FR-CH8 proMSP
MSP-FR-GS 6x60MSP-FR-S M6x60MSP-PR-MC
MSP-FR-EW-C MSP-FR-EW-PSF MSP-PR-EC
MSP-FR-EW-BP ...MSP-FR-EW-SLMSP-FR-EW-SH

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Mounting instructions – MSP-FR-EW at roof PV mounting system
proMSP
PROFIS
Solar
proMSP
proMSP
proMSP
proMSP
8B
8A
7B
7A
6
1
2
3
4
5

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
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Mounting instructions – MSP-FR-EW at roof PV mounting system
proMSP
9
10
11
16
12B
proMSP
13
14
15
17
12A
proMSP

© Ernst Schweizer AG
Ernst Schweizer AG, Metallbau
CH-8908 Hedingen
Telefon[phone]
Telefax [phone]
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Solar Energy Systems
Mounting instructions – MSP-FR-EW at roof PV mounting system
18
19A
19B
20
21
25
26
23A 23B
24B
24A
22