Aleo X63 User manual

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [e-mail] Installation manual Ver. 4.8, 05/2021, en Page 1 of 20
INSTALLATION MANUAL
For the aleo modules
with standard frame 42mm: X63; X61
X83; X81
with standard frame 35mm: P23
with frame for the roof integration: S83sol; S81sol
Please read carefully prior to installation. Store in a safe place for maintenance.
Installation manual rel. 4.8, 05/2021, en

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 2 of 20
1 This manual in other languages
Deutsch
(de-DE)
Wenn Sie diese Kurzanleitung in deut-
scher Sprache benötigen, wenden Sie
sich bitte an aleo solar, siehe Kap. 2.2.
Français
(fr-FR)
Pour avoir cette notice d’installation
en Français contactez aleo solar (voir
chapitre 2.2).
Italiano
(it-IT)
Ove necessitaste delle seguenti istru-
zioni d’uso in lingua italiana, vogliate
gentilmente rivolgervi a aleo solar,
vedi cap 2.2.
Polski
(pl-PL)
Jeżeli potrzebują Państwo niniejszej
instrukcji obsługi w języku polskim,
prosimy o skontaktowanie się z aleo
solar, patrz część 2.2.
Nederlans
(Benelux)
(nl-BE)
Wenst u deze handleiding in het
Nederlands te ontvangen, neem dan
contact op met de klantenservice van
aleo solar zie hoofdstuk 2.2.
2 Product support
2.1 Detailed information
In addition to this Reference Manual, aleo solar also provides fur-
ther information on its website.
2.2 Contact
aleo solar GmbH
Marius-Eriksen-Straße 1
17291 Prenzlau
Germany
T [phone]
F [phone]
E [email protected]
W www.aleo-solar.com
2.3 Copyright
© 2021 aleo solar GmbH
This installation manual is protected by copyright. All rights re-
served. Copying, reproduction, translation, or conversion to any
type of electronic media or machine-readable form, in its entirety
or parts, is not permitted. An exception will be made for a backup
copy for your own use.
aleo solar reserves the right to change this document without prior
notice.
aleo® and aleo solar® are registered, protected trademarks of aleo
solar GmbH.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 3 of 20
3 Table of content
1 This manual in other languages 2
2 Product support 2
2.1 Detailed information 2
2.2 Contact 2
2.3 Copyright 2
3 Table of content 3
4 Explanation of safety guidelines 4
4.1 Warnings and advices in this manual 4
4.2 Notes on modules 4
5 About this manual 4
5.1 Detailed information for installers and planners 4
6 Handling aleo modules 5
6.1 Intended use 5
6.2 Personal protection 5
7 Preparing for installation 6
7.1 Handling aleo modules 6
7.2 Safety precautions 7
8 Mechanical installation 8
8.1 Mounting orientation of modules 8
8.2 Safety precautions 8
8.3 Improper mounting 8
8.4 Intervals 8
8.5 Avoiding seals 9
8.6 Clearance under the modules 9
8.7 Shadowing 9
9 Electrical installation 10
9.1 Connectors 10
9.2 Laying the string cables 10
9.3 Potential equalization (earthing) of module frames 11
9.4 Lightning protection 11
9.5 Parallel and serial connection 11
10 Details of mechanical mounting 12
10.1 Aligning the mounting profiles 12
10.2 Clamp mounting for modules with standard frame 12
10.3 Clamp mounting for modules with Solrif® frame 13
10.4 Screw mounting 13
10.5 Insertion mounting 13
10.6 Load levels 13
10.7 Mounting drawings for modules with
standard frame 14
11 For operators: maintenance 17
11.1 Inspection 17
11.2 Review 17
11.3 Details for the inspections 17
11.4 Cleaning 17
11.5 Repairs 19
12 For operators: decommissioning 19
12.1 Safety precautions 19
12.2 Disposal 19
12.3 Returns 19
12.4 PV Cycle 19

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 4 of 20
4 Explanation of safety guidelines
This is the danger symbol. It is used in several versions
in this manual to alert you to the potential risk of per-
sonal injury.
4.1 Warnings and advices in this manual
The danger warnings are structured as follows:
Type and source of danger: Possible consequences of non-
observance.
 Measures or prohibitions to avoid danger
DANGER indicates an imminently dangerous situation which
inevitably leads to death or serious injury if not avoided.
___________________________________________________
The information on warning and cautions is structured as follows:
Type and source of danger: Possible consequences of non-
observance.
 Measures or prohibitions to avoid danger
WARNING!
WARNING indicates a potentially dangerous situation which can
lead to death or serious injury if not avoided.
CAUTION!
CAUTION indicates a potentially dangerous situation which can lead
to slight or semi-serious injury if not avoided.
___________________________________________________
WEIS
NOTE indicates a potentially dangerous situation which can cause
material damage if not avoided.
4.2 Notes on modules
The following symbol is attached to the modules:
If this symbol also appears on a danger or warning
product label, it is warning you of the danger caused
by electric current or voltage which can lead to per-
sonal injury if you fail to observe the instructions.
5 About this manual
This manual is release 4.8 with the issue date 05/2021. The publica-
tion of this manual renders all previous releases of this manual
invalid.
aleo solar constantly strives to improve its products and their doc-
umentation. Therefore, we advise you to always use the latest
version of the manual.
Hand over this installation manual to the operator after installation
and ensure you have confirmation of receipt.
5.1 Detailed information for installers and planners
5.1.1 Information on the aleo solar website
You can find the latest release of the installation manual and addi-
tional information on aleo solar’s website: www.aleo-solar.com.
Always use the latest version for your modules if you find a more
recent release of the manual.
5.1.2 Information sources for operators
If you have any queries about the latest release, contact your aleo
solar specialist partner or aleo solar directly (see chap. 2.2: „Con-
tact“).

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 5 of 20
6 Handling aleo modules
6.1 Intended use
6.1.1 Appropriate use
aleo modules are used for generating electrical power in stationary,
photovoltaic systems which are connected to the grid. If you would
like to use the modules for another purpose, such as for charging
an accumulator directly, you may need additional components (e.g.
string diodes).
aleo modules are suitable for installing near livestock farms and
coastal regions.
Observe all the applicable legislation, regulations, guidelines and
standards when installing and operating the modules.
6.1.2 Inappropriate use
 Do not install aleo modules on vehicles and do not use them in
air, space or seafaring applications and also not 2000 m above
sea level.
 Do not use aleo modules if they are exposed to concentrated
sunlight or strong artificial light, or if they could be immersed in
water or other liquids or exposed to vapour.
 Exclude the usage of our modules in heavily dirty environ-
ments.
WARNING!
 Avoid using any aggressive chemical substances (e.g. herbi-
cides) in the vicinity of the installation of aleo modules.
6.1.3 Product-specific information
Product-specific information (e.g. data sheet) contains details of a
particular type of module.
Only use aleo modules for the intended purpose outlined in the
product-specific information. These modules are rated for use in
application class A according to IEC 61730. For the electrical data
please refer to the data sheet or the name plate.
Under normal conditions, solar modules are likely to experience
conditions that produce more current and/or voltage than reported
at standard test conditions.1 Accordingly, the values of ISC and UOC
marked on the modules should be multiplied by a factor of 1.25
when determining component voltage ratings, conductor ampaci-
ties, fuse sizes and size of controls connected to the PV output.
If the information in the data sheet differs from this manual, the
datasheet takes precedence.
1 E.g. in the event of strong solar irradiation, low ambient temperature and
reflections from snow.
6.2 Personal protection
6.2.1 Electrical safety precautions
High DC voltages during storage, installation, operation and
maintenance: Risk of fatal electric shock!
 aleo modules may only be installed by qualified technicians
with a high level of expertise.
 GEFAHR!
Dangerous, high DC voltages are generated even at low levels of
light, especially in a series connection: Risk of fatal electric shock!
 Never touch the electrical connections of a solar module under
any circumstances, not even if you have disconnected the pho-
tovoltaic generator.
Electric arcs form when electrical connections are made or dis-
connected incorrectly: Severe or fatal injuries from electric shock
or severe injury from burns!
 Before you carry out any work on electrical components, dis-
connect the photovoltaic generator.
Contact with live parts due to defective insulation or dam-
aged/fallen off junction box covers: Severe or fatal injuries from
electric shock!
 Do not touch damaged parts with your bare hands.
 Use protective clothing and suitable, insulated tools.
High DC voltages possible, even when the PV generator is discon-
nected, if the generator is earthed: Severe or fatal injuries from
electric shock!
 If the circuit of your photovoltaic generator is earthed, remove
the earth before you carry out electrical work on the generator.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 6 of 20
WARNING!
Contact with live parts due to unsuitable tools or weather condi-
tions: Risk of electric shock!
 Only use approved, insulated tools for maintenance work on
live parts.
 Work in dry conditions. Ensure that the electrical connections
of the solar module, the cables and the tools are dry.
_________________________________________________
RECOMMENDATION
Work in pairs so that in an emergency one person can help in the
case of injury. This is because the modules generate voltage as
soon as they are exposed to light. Therefore, parts of the system
are nearly always energised during the daytime.
6.2.2 Mechanical safety precautions
WARNING!
Glass can crack, break or splinter. Beware of injury!
 Never step or sit on solar modules.
 Avoid knocking and bumping the surface, the edges and cor-
ners of the glass panels.
WARNING!
Exposed live parts due to damaged glass: Risk of electric shock!
 Only use modules with the insulation in perfect conditions.
CAUTION!
Sharp glass edges or flying glass splinters.: Beware of injury!
 Always use suitable protective equipment (e.g. gloves and
safety goggles).
 Be especially careful with the glass edges and corners of lami-
nates (frameless modules).
WARNING!
Damaged insulating back sheet. Risk of electric shock and burns!
 Avoid any contact with the back of the module with sharp or
pointed objects.
 Ensure that the back sheet remains undamaged.
7 Preparing for installation
7.1 Handling aleo modules
7.1.1 Storing modules
 Framed modules
- Modules in packaging units:
WEIS
 Store the aleo modules upright in the packaging units.
Make sure that each module has sufficient support.
 Do not stack the packaging units. This could damage the
modules.
 Store the modules in dry conditions. Packaging is not wa-
terproof.
 Store the modules at an ambient temperature of max.
40 °C.
- Individual modules:
 Store individual aleo modules in an upright position on
wedges with suitable padding. Use adequate padding
between the modules.
 Avoid stacking individual modules, as well as the pallets
they rest on.
 Store the modules in dry conditions.
 Store the modules at an ambient temperature of max.
40 °C.
7.1.2 Unpacking modules
 Framed modules
NWEIS
 Using an underlay, incline the pallet (e.g. with a beam,
height approx. 10 cm for 5° inclination), so that the opening
on the front of the box is elevated. The modules then lean
back in the box which makes it easier to remove them.
 Use an underlay for inclining which supports the whole side
of the pallet (e.g. a beam). This keeps the modules support-
ed in the box along their entire width.
 Remove the module from this side only. Remove the mod-
ule with the help of another person, if possible.
 Observe the unpacking instructions on the module box.

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7.1.3 Checking modules
 Before installation, check each aleo module for mechanical
defects. Pay particular attention to possible damage to glass
panels and insulated backsheets.
 In addition, check the insulation on the cables, connectors and
junction boxes.
 If you discover any defects, report them to the supplier or
transport company immediately.
7.1.4 Transporting modules to installation site
 Framed modules
 Always carry the aleo module with one other person. Take hold
of the module on its long sides.
 When transporting individual modules, make sure that you do
not put any strain or pressure on the junction box and cables.
7.2 Safety precautions
When installing on roofs or other elevated sites, objects may fall
down: Severe or fatal injuries are possible!
 Block off the danger zone for people and animals before begin-
ning installation work. If possible, remove all objects from the
danger zone.
Electric arcs form when electrical connections are made or dis-
connected incorrectly: Severe or fatal injuries from electric shock
or severe injury from burns!
 Disconnect the photovoltaic generator before you carry out any
work on the electrical components of the photovoltaic genera-
tor.
High DC voltages possible, even when the photovoltaic generator
is disconnected, if the generator is earthed: Severe or fatal inju-
ries from electric shock!
 If the circuit of your photovoltaic generator is earthed, remove
the earth before carrying out electrical work on the generator.
WARNING!
Exposed live parts on damaged modules: Danger of electric shock!
 Only use components which are in perfect condition for use in
photovoltaic systems. Do not install solar modules with visible
damage to the glass panels, the insulating back sheet or on the
insulation of electrical connections.
___________________________________________________
WARNING!
Contact with live parts due to unsuitable tools or wet conditions:
Danger of electric shock!
 Only use approved, insulated tools for installation or mainte-
nance work on live parts.
 Work in dry conditions. Make sure that the electrical connec-
tions on the solar module, the cables used for installation and
the tools, are dry.
7.2.1 Health and safety
CAUTION!
Risk of slipping due to wind, rain, snow or ice: Risk of injury due to
falling or colliding with objects!
 Avoid unfavourable weather conditions, such as strong wind or
rain.
 Also avoid working on the installation site in ice and snow.
 Use the safety equipment required or recommended by local
regulations, such as hard hats, steel-capped shoes with rubber
soles, protective goggles, gloves or fall-protection systems.
CAUTION!
Hot module parts in strong sunlight: Risk of burning!
 Protect yourself from burning by wearing gloves and suitable
clothing.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 8 of 20
8 Mechanical installation
8.1 Mounting orientation of modules
8.1.1 Vertical (portrait) mounting
When mounting the module vertically, make sure that the cables
are facing towards the ground and the junction box is facing up-
wards.
8.1.2 Horizontal (landscape) mounting
When mounting horizontally, make sure that the exit holes for the
cables on the module or the junction box are positioned on the
inside of the photovoltaic generator (see fig. 1). Avoid the lateral
outer edges of the photovoltaic generator to minimise the effect of
ambient conditions, such as wind or rain.
Fig. 1 Recommended position of the junction boxes for horizon-
tal mounting (facing the middle of the generator).
8.1.3 Inclination
Incline the surface of the modules at an angle of at least 10° hori-
zontally, so that precipitation can drain off which supports the
modules self-cleaning. For optimum self-cleaning, aleo recom-
mends an angle of at least 15° horizontally.
In case of flat installation, we recommend the use of our frameless
module.
8.2 Safety precautions
S
 Do not drill any additional hole in the frame of aleo modules.
8.3 Improper mounting
#
 Do not attach the modules using nails. The vibration created in
the process can cause micro fissures and loss of yield, and re-
sults in loss of warranty rights.
 Do not attach the modules by welding. The temperatures cre-
ated in the process can cause delamination, micro fissures and
loss of yield, and results in loss of warranty rights.
8.4 Intervals
8.4.1 Intervals between modules with standard frame
EIS#
 Leave a minimum clearance when mounting modules. This
prevents mechanical tension due to thermal expansion.
 When mounting at intervals, leave a clearance of 5 mm or more
between the individual module frames.
 For edge-to-edge mounting, allow for an expansion joint of
30 mm after a maximum of 7 m.
 The recommended maximum clearance is 30 cm, based on the
modules standard cable length.
aleo solar recommends mounting at intervals. Also note the infor-
mation from the mounting equipment vendor. This could specify
larger intervals.
8.4.2 Clearance under the modules
 Minimum clearance
Rooftop or freefield mounting
 Ensure a clearance of at least 4 cm between the rear
edge of the frame and the mounting surface (e.g. the roof
tiles) for the rear ventilation of the aleo module.
Roof integrated mounting
 Ensure an appropriate interval, for example, to the
trough of the mounting system. Also ensure adequate
ridge ventilation, for example, with a roof ridge ventila-
tor.
 Maximum clearance
 The largest permissible clearance is defined by national stand-
ards. This is used to design the installation on the assumed ef-
fects of wind and suction.
 The actual maximum clearance of an installation is determined
by the sub-structure. Ensure that your sub-structure adheres to
the permissible clearances.

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8.5 Avoiding seals
 Avoid the use of a seal between aleo modules and their mount-
ing surface.
 Dry and cool operation can have a positive effect on the per-
formance as well as the service life of an aleo module.
 Also for roof-integrated mounting, ensure good rear ventilation
to minimise loss of output which results from a higher module
temperature. Ensure adequate ridge ventilation, for example,
with a roof ridge ventilator.
8.6 Clearance under the modules
 Keep the space behind the laminate free of any objects. This
prevents damage to the insulating back sheet and the junction
box.
 Ensure that sharp or conductive parts (e.g. screws or nails) do
not protrude into the space behind the module.
 If possible, take measures to prevent foreign objects (e.g. snow,
ice, leaves, twigs, branches from being able to get behind the
module.
8.7 Shadowing
8.7.1 Avoidance of shadowing
 Avoid shadowing of solar modules. This applies also and espe-
cially for shadowing of small areas due to close small objects
like antennas or lightning protectors.
 If there is systematic shadowing in the course of the day or year
because of adjacent objects at the site and you do not have any
opportunity to affect the shadowing, then:
- take another site into consideration or
- only plan with the non-shadowed parts of your site when
you configure your photovoltaic generator.
8.7.2 Effects of shadowing
Even shadowing of a single module or solar cell can appreciably
affect the power output of your photovoltaic plant.
If shadow falls on single solar modules of a photovoltaic generator
or on single solar cells of a solar module, the shadowed parts gen-
erate less or no electrical power anymore. This may affect the yield
of the whole module string and therefore the whole generator.
Furthermore, shadowing often causes the solar cells to consume
the otherwise in the module generated electrical power. This may
cause warming of the shadowed cells in comparison to the not
shaded cells, which in extreme cases can raise the risk of fire.
Constant or systematic shadowing can cause a serious yield loss
and may accelerate the aging process and therefore causes power
loss or failures of the photovoltaic generator. Avoid shadowing e.g.
caused by building parts, depending on day time or season (esp. in
winter) to optimize the yield and durability of your plant.
8.7.3 Protective devices of the modules
Aleo modules are equipped with bypass-elements to limit the
temperature rising because of the internal power consumption
induced by shadowing to a non-critical grade and thus protect the
module.
Avoid systematic shadowing also because the bypass-elements are
not suited for constant, long lasting loads.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 10 of 20
9 Electrical installation
9.1 Connectors
WARNING!
Incompatible or unsuitable connectors can overheat: Fire hazard!
 Only use connectors that are the same type and from the same
manufacturer.
 Avoid using different types of connectors or ones from different
manufacturers, even if:
- connecting is possible,
- the connectors have the same basic designation (e.g.
“MC4”) or
- they are designated as “compatible”.
You can find more details on this in the next two sections.
9.1.1 Module connectors
The various module types can be fitted with the following connect-
ors:
- Original Multicontact® MC4 (with locking)2,
- PV-JM601 (with locking).
You can find the specific connectors in the module data sheet.
9.1.2 Connector peculiaritiesHINWEIS
#
 Original Multicontact® MC4-connectors:
Only plug original Multicontact® MC4-connectors into original-
Multicontact® MC4-connectors
 PV-JM601 connectors:
Only plug PV-JM601 connectors into PV-JM601 connectors.
9.1.3 Replacing the connectors
You can remove the connector on a module and replace it with
another connector, which is released by aleo (see chap. 9.1.2) if
necessary.
You retain the manufacturing warranty if you remove and mount
with approved tools in the proper way and according to the con-
nector manufacturer’s instructions.
2 The original Multicontact® MC4 connectors are referred to as “MC4” in the
data sheet.
9.2 Laying the string cables
CAUTION!
Brittle fractures in junction boxes due to contact with unsuitable
connection cables: Risk of fire!
 Only use connection cables without plasticisers, certified ac-
cording to the current valid standard.3
_________________________________________________
INWEIS
 Avoid any tensile and pressure loads on the junction box when
mounting.
 When mounting, avoid heavy tensile loads on any connectors
already plugged in.
 Bend the cables from the connector at least 4 cm after they exit
from the connector.
 Bend the cables from the junction box as well, at least 4 cm
after they exit from the connector.
This keeps the cables waterproof at the cable outlet.
Observe the guidelines on laying the respective cables.
Lay all cables ensuring that:
 you adhere to the minimum bend radius (e.g. 5-fold cable
diameter4),
 you avoid laying near sharp corners and edges or protect
the cables accordingly,
 cables must not lay between module backside and
mounting system parts,
 you protect them from direct sunlight and precipitation,
 you secure the cables with UV resistant cable clips5 or
other suitable cable fasteners which protect the cable in-
sulation,
 cables from module strings are laid as near to each other
as possible to minimise the effects of being struck by
lightning.
3 Current standard for solar DC cables in Europe: EN 50618.
4 Some countries specify a larger bend radius, e.g. 8-fold wire diameter in
the USA (NEC Codebook 2011).
5 For attaching cable clips, use a suitable tool which constrict or damage the
cable insulation by tightening.

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9.2.1 Weather protection
EIS
 Lay the cables so that they exit the junction box from below.
This prevents water, which runs along the cable, from collecting
at the point where the cables exit the junction box.
 For modules mounted horizontally, lay the cables in a U-form
away from the junction box (see fig. 2).
 Modules mounted vertically do not usually need any additional
adjustments.
Fig. 2 U-form cables at the junction box for a horizontally
mounted module
Lay cables carefully to protect against damage from:
- direct environmental factors, such as precipitation,
- movement (e.g. from wind),
- indirect environmental factors, e.g. snow or ice, which slip
down behind the modules and
- chaffing on the insulation due to the cable moving (e.g.
from wind or ice).
9.3 Potential equalization (earthing) of module frames
 Local regulations may specify potential equalisation (earthing).
 When earthing the module frame, establish a safe electrical
connection to the earth potential or earthed sub-structure.
 Observe the requirements and recommendations of the invert-
er manufacturer, as well as insurance policies.
 The module frames are made of aluminium. When mounting
onto other materials, take suitable measures to prevent electric
corrosion, e.g. by using a coating.
Potential equalization does not serve as lightning protection. Light-
ning protection may be necessary in addition to potential equaliza-
tion.
9.4 Lightning protection
WARNING!
Absence of or inadequate lightning protection: Risk of fire or
electric shock!
 Leave the planning and installation of the external, and if re-
quired internal, lightning protection to be always carried out by
qualified technicians.
 It is essential to integrate an arrestor for connecting the light-
ning rod with the lightning protection. This ensures the safety
and reliability of the lightning protection as well as the photo-
voltaic system.
 Do not under any circumstances include the module frame or
its earth as an active part of the lightning protection (e.g. as a
lightning arrestor).
If you earth the module frame, the only task of this earth is the
potential equalisation between the module frame and the support-
ing structure.
9.5 Parallel and serial connection
PV modules of the same type can be connected in parallel. The PV
modules in this series are fundamentally designed for series con-
nection.
 Only use PV modules of the same type and output for parallel
connection. Take measures for over-current protection (e.g.
line fuses) if necessary. Never exceed the specified reverse cur-
rent loadability of the PV modules. Maximum number of mod-
ule strings that are allowed to be switched in parallel: 2 (fuse
rating / (short-circuit current x1.25) + 1)
 Make sure that only PV modules with the same amperage (IMPP)
are interconnected for series connection and make sure that
the voltages of strings connected in parallel are the same. Even
at low temperatures, never exceed the maximum permissible
system voltage of the PV modules. Maximum number of PV
modules that are allowed to be switched in series: maximum
system voltage / (open circuit voltage x 1.25), with respect to
the temperature coefficient.
 Make sure that the number and connection of the PV modules
match the electrical values specified by the devices connected
to the photovoltaic system.
 Make sure that the polarity is correct.

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10 Details of mechanical mounting
10.1 Aligning the mounting profiles
10.1.1 Permissible alignment
Fig. 3 Permissible alignment of mounting profiles
a, b: Parallel profiles for mounting
10.1.2 Not permissible alignment
Fig. 4 Not permissible alignment of mounting profiles
a: Profiles not parallel to each other
b: Profile neither parallel nor perpendicular to the module edges
10.2 Clamp mounting for modules with standard frame
10.2.1 Arranging the clamps
 Permissible clamp arrangement
Fig. 5 Permissible clamp arrangement
a: Symmetrical clamping on long sides
b: Symmetrical clamping on the short sides
 Not permissible clamp arrangement
Fig. 6 Not permissible clamp arrangement (1)
a: Missing clamps
b: Clamping on both short and long sides
Fig. 7 Not permissible clamp arrangement (2)
c: Protruding clamps
d: Opposing clamps have different distances to the module corners
e: Asymmetrical clamps on the short side
10.2.2 Clamp dimensions
Observe the following information for clamp lengths and depths.
 Clamp lengths and depths
Fig. 8 Definition of clamp length and depth for framed modules
a: Clamp length
b: Clamp depth
 The required minimum length of a clamp (parallel to the frame
side) is 30 mm.
 The required minimum depth of a clamp (perpendicular to the
frame side) is 3 mm.
 aleo solar recommends a clamp depth of 5 mm.
 Depending on the ambient conditions (e.g. angle, suction load
or tolerances of the substructure) a higher minimum area per
clamp may be required.
 Observe the instructions of the clamp manufacturer.
10.2.3 Tightening torque for clamp mounting
Tighten the screws on the clamp manually. If you use an automatic
screwdriver, then set a suitable maximum tightening torque. You
can find details for this in the manufacturer’s documentation for
the substructure.

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10.3 Clamp mounting for modules with Solrif® frame
HINWEIS
 Avoid clamp mounting for modules with Solrif® frame. Only
mount these modules with the Solrif® mounting system.
 You can also contact the aleo solar branch in your country.
They will provide you with information on mounting systems
which are already in use on a greater scale.
10.4 Screw mounting
10.4.1 Modules with standard frame
The aleo modules have mounting holes with a diameter of 9 mm.
10.4.2 Modules with Solrif® frame
 Avoid screw mounting for Solrif® modules. Only mount Solrif®
modules with the Solrif® mounting system.
10.4.3 Tightening torque for screw mounting
For M8 stainless steel screws, use a maximum torque of 24 Nm.6
10.5 Insertion mounting
10.5.1 Modules with standard frame
Observe the manufacturer’s instructions for the mounting system.
Use the earthing holes for the potential equalisation.
Although edge-to-edge mounting is possible (see also chap. 8.4.1:
„Intervals between modules with standard frame“), aleo solar
recommends mounting at intervals.
10.5.2 Modules with Solrif® frame
Only mount modules with Solrif® frame with the Solrif® mounting
system.
6 This applies to unlubricated screws with standard thread and strength
class of 8.8 (minimum breaking load 29.2 kN).
10.6 Load levels
A load can be a pressure load as well as a suction load. Loads from
snow and wind are grouped into several levels, which need to be
considered wherever the module is installed. Higher load levels
make the requirements for proper installation more stringent. The
values listed below assume an appropriate installation (see chap.
10.7: “Mounting drawings for modules with standard frame”).
10.6.1 Permissible loads for modules with standard frame
42mm
10.6.2 Permissible loads for modules with standard frame
35mm
10.6.3 Permissible loads for modules with Solrif® frame
Please observe the instructions from Schweizer for the mounting of
modules with Solrif frame. You can find the manual on the website
from Ernst Schweizer AG Metallbau or on aleo solar website:
www.aleo-solar.com.
10.6.4 Snow load
For snow loads above 3900 Pa, suitable measures must be taken to
ensure that slipping snow loads do not damage the lower module
frame.
Possible measures are: snow hooks or module holder, in the middle
of the lower frame part.
CAUTION!
These measures only serve as a support for the frame and not as an
additional fastening point. Clamps fixing the frame are therefore
not suitable for this purpose!
For snow loads above 3900Pa, aleo recommends horizontal instal-
lation with clamping on the long side.
Load level Permissible pressure Permissible suction
Load level I 2400 Pa 2400 Pa
Load level II 3900 Pa 2400 Pa
Load level III 5400 Pa 2400 Pa
Load level IV 8000 Pa 5400 Pa
Laststufe Zulässiger Druck Zulässiger Sog
Load level I 1400 Pa 1400 Pa
Load level II 3900 Pa 2400 Pa
Load level III 5400 Pa 2400 Pa

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10.7 Mounting drawings for modules with standard frame
10.7.1 Module X63, X83
Fig. 9 Mounting X63/X83 with clamps
Table mounting areas clamping for X63, X83
Table lay-in system for X63, X83
Clamping area Load level Permissible pressure
(test load)
Permissible suction
(test load)
Clamping
long side
0 mm – 458 mm Load level I 2400 Pa 2400 Pa
120 mm – 458 mm Load level II 3900 Pa 2400 Pa
220 mm – 458 mm Load level III 5400 Pa 2400 Pa
220 mm – 300 mm Load level IV 8000 Pa 5400 Pa
Clamping
short side 0 mm – 200 mm Load level I 2400 Pa 2400 Pa
Load level Permissible pressure
(test load)
Permissible suction
(test load)
Lay-in system
long side Load level II 3900 Pa 2400 Pa
Lay-in system
short side Load level I 2400 Pa 2400 Pa
Modules can be mounted horizontally and
vertically.
Please note the information on snow load
in section 10.6.4.
0 mm
458 mm
300
mm
220
mm
120
mm
0 mm
200
mm

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10.7.2 Module X61, X81
Fig. 10 Mounting X61/ X81 with clamps
Table mounting areas clamping for X61, X81
Table lay-in system for X61, X81
Clamping area Load level Permissible pressure
(test load)
Permissible suction
(test load)
Clamping
long side
0 mm – 293 mm Load level I 2400 Pa 2400 Pa
120 mm – 293 mm Load level II 3900 Pa 2400 Pa
180 mm – 293 mm Load level III 5400 Pa 2400 Pa
180 mm – 220 mm Load level IV 8000 Pa 5400 Pa
Clamping
short side 0 mm – 200 mm Load level I 2400 Pa 2400 Pa
Load level Permissible pressure
(test load)
Permissible suction
(test load)
Lay-in system
long side Load level II 3900 Pa 2400 Pa
Lay-in system
short side Load level I 2400 Pa 2400 Pa
Modules can be mounted horizon-
tally and vertically.
Please note the information on
snow load in section 10.6.4.
0 mm
293 mm
220
mm
180
mm
120
mm
0 mm
200
mm

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected] Installation manual Ver. 4.8, 05/2021, en Page 16 of 20
10.7.3 Module P23
Fig. 11 Mounting P23 with clamps
Table mounting areas clamping for P23
Table lay-in system for P23
* Based on IEC 61215
Clamping area Load level Permissible pressure
(test load)
Permissible suction
(test load)
Clamping
long side
0 mm – 458 mm Load level I 1400 Pa* 1400 Pa*
220 mm – 458 mm Load level II 3900 Pa 2400 Pa
220 mm – 300 mm Load level III 5400 Pa 2400 Pa
Clamping
short side 0 mm – 200 mm Load level I 1400 Pa 1400 Pa
Load level Permissible pressure
(test load)
Permissible suction
(test load)
Lay-in system
long side Load level I 2400 Pa 2400 Pa
0 mm
458 mm
300
mm
220
mm
0 mm
200
mm
Modules can be mounted horizontally
and vertically.
Please note the information on snow
load in section 10.6.4.

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11 For operators: maintenance
Inspect and maintain your system to:
- keep it safe and reliable,
- achieve top output,
- prevent damage and,
- protect your investment.
aleo solar recommends carrying out regular inspections and
maintenance so that any problems can be discovered reliably, and
rectified.
RECOMMENDATION
 aleo solar explicitly recommends annual inspections and a more
thorough inspection and measurement every 4 years.
 We also recommend the use of a monitoring system to identify
any outages or problems quickly.
 Inspecting the output of your photovoltaic system regularly can
help to discover problems promptly, and ensures your photo-
voltaic system operates at top performance, preventing loss of
output.
 For the proper maintenance and repair of your aleo solar pho-
tovoltaic system, contact your aleo solar dealer or get in touch
with aleo solar directly (see chap. 2.2: „Contact“).
11.1 Inspection
aleo solar recommends an inspection every year. This should be a
visual inspection. Refer to chap. 11.3: „Details for the inspections“.
The inspection includes the following aspects:
11.1.1 Inspection of the generator
 strings: condition of the insulation and mounting,
 condition of the junction box,
 condition of the visible connectors,
 condition of the earthing conductors,
 for direct earthing: connection of the earthing conductors on
the frames,
 for indirect earthing: connection of the frames to the sub-
structure and the earthing conductors to the sub-structure,
 condition of the mounting system (in peripheral area),
 dirt on modules: type and degree of dirt. Clean the compo-
nents, if necessary.
 shade circumstances (e.g. from trees or neighbouring houses).
11.1.2 Inspection of the documentation and drawings
 check the module string plan,7
 check the inverter's status reports,
 determine and archive the annual output,
 create and archive the inspection report.
11.2 Review
aleo solar recommends carrying out a thorough review at least
every 4 years. This includes the following work in addition to the
inspection:
 measure the characteristics of individual strings (MPP current:
IMPP; open-circuit voltage: UOC; power output: PMPP),
 measure the insulation resistance: RiSO,8,9
 evaluate the annual power output and compare the data with
earlier readings,
 create and archive a review report.
11.3 Details for the inspections
11.3.1 Mechanical inspection
 Safety precautions:
Refer to the notes in chap. 6.2.2: „Mechanical safety precau-
tions“.
 Work steps:
During the inspection, check that the mechanical connections
are clean, securely fitted and properly intact.
11.3.2 Electrical inspection
 Safety precautions:
Make sure you refer to the notes in chap. 6.2.1: „Electrical
safety precautions“.
 Work steps:
During the inspection, check that the electrical connections
are clean, securely fitted and properly intact.
Identify any defects or irregularities in the electrical instal-
lation and make a record of them. Then rectify the problem
as quickly as possible.
11.4 Cleaning
Depending on the ambient conditions, modules are likely to get
soiled more or less heavily over time. This can cause reduced out-
put.
Dirt could be:
- dust, pollen or seed;
- leaves or twigs;
- deposits from stable vapour;
- moss, algae, fungi or bacteria growing on deposits (in
short: biofilms);
- salt (in coastal regions).
7 Suggestion for external inspectors: perform a spot check to ensure that
the module string plan matches the installation.
8 According to the standard IEC 61215, a photovoltaic module should have
an insulation resistance of at least 40 MΩ/m2.
9 Some inverters provide the measured insulation resistance via an inter-
face.

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11.4.1 Safety precautions
CAUTION!
Contact of live parts with water: Risk of electric shock!
 Never use a high-pressure cleaner.
HINWEIS
You will also retain the manufacturer’s warranty as a result of this
measure.
11.4.2 Glass surfaces
HINW
The glass surfaces of aleo modules have microscopic structures or
anti-reflex coatings. Ensure that these do not get damaged.
 Do not use any cleaning agents which will polish or scratch the
surface.
 Avoid the use of very hard water.
 Also avoid the use of distilled or demineralised water if possi-
ble.10
 Avoid the use of acids, bases or other aggressive cleaning
agents.
Dirt- or water-repellent coatings subsequently applied to the mod-
ules can negatively affect the efficiency of the aleo modules and
therefore the power output of the whole photovoltaic system. We
therefore advise against the use of these agents.
RECOMMENDATION
For cleaning the glass module surfaces, aleo solar recommends:
 rainwater without additives11 with its temperature
matching the temperature of the module12;
 a soft sponge or a soft brush.
 If necessary, use a telescopic rod with a sponge or soft brush
attached on the end. The rod can have a water pipe integrated.
10 Distilled or demineralised water is often used by cleaning services but can
damage glass surfaces with frequent intensive use over long periods of
time. aleo solar therefore advises against the use of distilled or demineral-
ised water.
11 Rainwater has a low level of water hardness. It is beneficial to use it
because a build-up of deposits is avoided.
12 This prevents mechanical tension in the glass and ensures the module a
longer service life.
For stubborn patches of dirt, use the following to help:
 Isopropanol:
aleo solar recommends a mixture of isopropanol and rainwater to
the ratio of 1:1.
 Glass cleaner:
As an alternative, aleo solar recommends clear, colourless glass
cleaner without ethanol or denaturants (e.g. Bitrex®).13
 Anti-reflex glass
aleo modules have an anti-reflex layer on the glass surface to
achieve a higher output. This means that some marks (e.g. finger-
prints) are more visible than on normal glass. These marks are
mostly seen as shimmering patches.
These kinds of marks do not have any measurable effect on the
module output and fade away after about 2 weeks of being ex-
posed to weather conditions, as sunlight and rain break them
down.
11.4.3 Insulating back sheet
The insulating back sheet must not be cleaned. Nevertheless, if you
still need to perform work behind the modules (e.g. to remove
leaves):
 Make sure you refer to chap. 6.2.1: „Electrical safety precau-
tions“ and chap. 6.2.2: „Mechanical safety precautions“.
 Avoid damaging the insulating back sheet.
11.4.4 More frequent cleaning
RECOMMENDATION
 In environments subject to heavy soiling, we recommend mak-
ing the intervals for inspections and cleaning shorter than just
once a year.
 For example, this applies to environments with a high exposure
to dust, especially close to:
- large livestock farms,
- grain reloading stations,
- green areas with heavy foliage, seeds or pollen or
- factories with high levels of dust emission.
If frequent cleaning is necessary, aleo solar recommends contract-
ing a specialised company to clean your photovoltaic generator
properly without treading on the modules.
13 Distilled or Ethanol contains denaturants. Some denaturants can leave
streaks behind or damage an anti-reflex layer.

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11.5 Repairs
11.5.1 Modules
For repairing aleo modules, only contract technicians who have
been authorised by aleo solar to avoid loss of warranty.
A defective module can cause loss of output, as well as consequen-
tial damage. If an aleo module needs repairing, first get in touch
with aleo solar (see chap. 2.2: „Contact“). Never, under any circum-
stances, repair an aleo module yourself.
Improper repairs can cause damage which may have repercussions
years later, such as failure of electrical insulation. This could be
fatal. Therefore, report any necessary repairs immediately.
Before you carry out any maintenance work on aleo modules,
deactivate the module string or the whole generator if necessary.
Observe the warnings and notes in chap. 6.2.2: „Mechanical safety
precautions“ and chap. 6.2.1: „Electrical safety precautions“.
11.5.2 System parts
For repairing other system parts (e.g. substructure, connection
boxes), contract authorised technicians to do the work or contact
aleo solar directly (see chap. 2.2: „Contact“).
12 For operators: decommissioning
12.1 Safety precautions
Make sure you refer to the notes in chap. 6.2.1: „Electrical safety
precautions“. If you would like to continue using the aleo module,
also refer to chap. 7.1: „Handling aleo modules“.
12.2 Disposal
 Dispose of the aleo modules at the end of their service life in
the proper manner.
 To do this, contact a disposal company.
 Never dispose of aleo modules with household waste.
12.3 Returns
aleo solar is member of PV Cycle. Used or damaged PV modules
from aleo solar are disposed of by PV Cycle without any costs.
Under certain circumstances transport costs may apply in the con-
text of disposal.
12.4 PV Cycle
PV CYCLE offers a comprehensive collection network for PV module
waste, from fixed collection points to on-site pick-up.
Please contact operatio[email protected] for your individual disposal
solution.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [e-mail] Installation manual Ver. 4.8, 05/2021, en Page 20 of 20
Aleo solar GmbH
Marius-Eriksen-Straße 1
17291 Prenzlau
Germany
Contact
[phone]
[email protected]
www.aleo-solar.com