DUALSUN M-60-3BBP Series Manual

EN
Installation, operation and
maintenance instructions
DualSun XXXM-60-3BBP
Version 1.2 –March 2020
Head office Manufacturing site
2 rue Marc Donadille Rue du Champ de Foire
13013 Marseille - France 01640 Jujurieux –France
We reserve the right at any time to make any changes that we deem useful
© DualSun SAS
DualSun online library

Installation, operation and maintenance instructions - DualSun XXXM –60 –3BBP
V1.2 –March 2020
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Table of contents
1Introduction ...................................................................................................................................... 3
1.1 DualSun product list .......................................................................................................................................... 3
1.2 Symbols used in this document.......................................................................................................................... 3
1.3 General safety instructions ................................................................................................................................ 4
1.4General standards to be respected .................................................................................................................... 5
2General description ........................................................................................................................... 6
2.1 Operating principle of the Spring Panel.............................................................................................................. 6
2.2 Principle diagram of a Spring module................................................................................................................. 6
2.3 Technical specifications ..................................................................................................................................... 7
2.3.1 Physical characteristics.................................................................................................................................................................7
2.3.2 Photovoltaic characteristics .........................................................................................................................................................7
2.3.3 Thermal characteristics ................................................................................................................................................................7
2.3.4 Thermal output vs. flow rate behaviour .......................................................................................................................................8
2.3.5 Pressure loss.................................................................................................................................................................................9
2.3.6 Recommended flow rates...........................................................................................................................................................10
2.3.7 Maximum authorized pressures .................................................................................................................................................10
2.4 General recommendations................................................................................................................................11
2.4.1 Handling .....................................................................................................................................................................................11
2.4.2 Transportation ...........................................................................................................................................................................11
2.4.3 Storage .......................................................................................................................................................................................11
2.5 Technical considerations...................................................................................................................................12
2.5.1 Static requirements on the roof..................................................................................................................................................12
2.5.2 Tilt angle.....................................................................................................................................................................................12
2.5.3 Wind and snow load...................................................................................................................................................................12
2.5.4 System location ..........................................................................................................................................................................12
2.5.5 Types of mounting......................................................................................................................................................................13
2.5.6 Fire/explosion protection ...........................................................................................................................................................13
3Assembly and installation................................................................................................................ 14
3.1 Installing DualSun modules...............................................................................................................................14
3.2 Mechanical installation.....................................................................................................................................16
3.2.1 Positioning areas of mounting system rails................................................................................................................................16
3.2.2 Raising the panels relative to the roof surface ...........................................................................................................................17
3.2.3 Possible connection configurations with hydraulic links ............................................................................................................18
3.2.4 Trapezoidal sheet metal roofing.................................................................................................................................................19
4Electrical installation ....................................................................................................................... 22
4.1 Electrical connection.........................................................................................................................................22
4.1.1 Serial wiring................................................................................................................................................................................23
4.1.2 Parallel wiring ............................................................................................................................................................................23
4.2 Electrical fittings, cables and diodes..................................................................................................................24
4.3 Grounding and lightning protection ..................................................................................................................25
4.4 Indirect lightning strike.....................................................................................................................................26
5Hydraulic installation....................................................................................................................... 27
5.1 Hydraulic connection of the panels ...................................................................................................................27
5.1.1 Inter-Panel hydraulic link............................................................................................................................................................27
5.1.2 Hydraulic balancing of panel fields ............................................................................................................................................30
5.1.3 Connecting the panel field to the transfer circuit .......................................................................................................................35
5.2 Panel temperature probe..................................................................................................................................38
6Cleaning the surface of the modules................................................................................................ 39
7Decommissioning the installation.................................................................................................... 39
7.1 Disassembling a module ...................................................................................................................................39
7.2 Hydraulic disconnection....................................................................................................................................40
7.3 Waste treatment ..............................................................................................................................................40
8Responsibilities................................................................................................................................ 40
8.1 Warranty conditions .........................................................................................................................................41
8.2 Disclaimer.........................................................................................................................................................41

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1Introduction
1.1 DualSun product list
Material
Name
Spring non-insulated hybrid panel
DualSun XXXM –60 –3BBPN
Spring insulated hybrid panel
DualSun XXXM –60 –3BBPI
Inter-Panel link - Pressurised system
DN15 - Spring link
Inter-Panel link - Pool system
DN26 - Spring link
Kit with temperature probe –installation memo –
commissioning report –hydraulic fitting disassembly
tool
Essential Kit DualSun
DN15 inlet/outlet hydraulic fittings kit
Pressurised system
DN15 –Spring inlet/outlet fittings kit M3/4'’’
DN26 inlet/outlet hydraulic fittings kit
Pressurised system
DN26 –Spring inlet/outlet fittings kit M1’’
Inlet/outlet hydraulic fittings kit
Pool system
DN26 –compression Spring input/output fitting kit –
Dext 32/40 mm
1.2 Symbols used in this document
Important remark
Security note
Mandatory use of the safety harness during
any height intervention
Risk of electric shock
Use of protective goggles
Risk of falling
Mandatory use of safety shoes
Risk of falling objects
Mandatory use of gloves
High temperature risk
Mandatory use of helmet
Information, advice, recommendation, etc.
Switching off the electrical circuit upstream
and downstream of the inverter
String: single circuit of modules mounted in series, either at the electrical level (PV photovoltaic) or at the hydraulic
level (thermal).

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1.3 General safety instructions
Please read this installation manual thoroughly and in detail in order to be able to fully exploit the functionality of
the product. DualSun disclaims all liability for defects and damages resulting from failure to comply with the
installation instructions (improper use, incorrect installation, handling error, etc...).
•It is important to follow these instructions for the safety of people. Improper
assembly may cause serious injury. The end user must keep these safety instructions.
•For installations on roofs, it is necessary to respect the safety standards of the
persons, relating to roof work and sealing of roofs and relating to scaffolding work
with safety net by mounting the respective devices before starting the work. Refer
to the recommendation published by the national risk prevention organization.
•The use of gloves is mandatory when handling the panels to avoid any risk of injury
or burns.
•Installation, control, commissioning, maintenance and troubleshooting of the
system must only be carried out by qualified personnel.
•The correct operation of the installation is guaranteed only if the installation and
assembly have been made in the rules of art.
•Installation should not be used if there are signs of damage.
•Unplug all connecting cables from the power supply before intervening on the
installation.
•All electrical work must be carried out according to local directives.
•The entire solar installation must be mounted and operated in accordance with the
recognised technical rules.
•For the thermal part of the installation, we recommend the heat transfer fluid
Tyfocor L; if you use another brand of glycol, it must contain anti-corrosion agents
and be subject to validation by DualSun.

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1.4 General standards to be respected
To ensure safe, ecological and economical operation, all applicable regional and national standards, rules and
directives must be met, particularly those mentioned below:
•EN 12975 1 and 2: General requirements and method of controlling solar thermal collectors.
•EN 12976 1 and 2: General requirements and method of controlling prefabricated solar thermal installations.
•IEC/EN 61215 1 and 2 Edition 1: qualification of design and approval of crystalline silicon photovoltaic (PV)
modules for terrestrial application
•IEC/EN 61730 1 and 2 Edition 2: qualification for the operating safety of photovoltaic modules (PV) –part 1:
requirements for construction and part 2: requirements for testing.
The installation and safety instructions must be met.
Comply with the regulations on the prevention of occupational accidents prescribed by professional associations, in
particular those relating to roof work.
The entire solar installation must be mounted and operated in accordance with the recognised technical rules.
All electrical work must be carried out according to local directives.

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2General description
2.1 Operating principle of the Spring Panel
DualSun Spring is a new generation hybrid solar panel that provides both electricity (photovoltaic) and hot (thermal)
water for housing.
Protected by several patents, the Spring Panel produces 2.5 times more energy than a photovoltaic panel of the same
surface. This innovative technology allows a space saving and total integration into the roof, for a competitive energy
cost.
Our technology is derived from a double observation on photovoltaic panels:
•they produce much more heat (80%) than electricity (20%) when they are exposed to the Sun,
•their performance decreases when their temperature rises.
The Spring panel uses the heat emitted by the photovoltaic cells to heat the domestic water, thus improving the
efficiency by cooling photovoltaic cells (potential gain from 5% to 15% by suitable cooling).
With a vertically integrated design of photovoltaic and thermal components in a single panel (protected by 3 patent
families), the Spring panel is specifically designed for an optimized industrial manufacturing, making it more efficient,
more aesthetic and cheaper than competitors.
With the same shape as a conventional photovoltaic panel, the Spring offers:
•harmonious design and total integration into the roof,
•a real space saving thanks to a more efficient solar panel per m²,
•a simple and safe installation.
2.2 Principle diagram of a Spring module
Figure 1 : Exploded view of the DualSun Spring Panel
1. Heat exchanger: completely integrated in the Panel, it allows an excellent heat transfer between the
photovoltaic front and the water circulation.
2. Low thickness (35 mm frame): standard dimensions of a conventional photovoltaic panel (60 cells of 6 inches)
3. Solar photovoltaic cells: monocrystalline, high efficiency, they are cooled by water circulation.
1
2
3

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2.3 Technical specifications
2.3.1 Physical characteristics
Please consult the datasheet in our online library.
2.3.2 Photovoltaic characteristics
Please consult the datasheet in our online library.
2.3.3 Thermal characteristics
THERMAL CHARACTERISTICS
Sensor surface
1.635 m²
Liquid volume
5 L
Maximum operating pressure
1,5 bar
Hydraulic input/output
15mm or 26mm fitting
Non-insulated
Insulated
Stagnation temperature
70 °c
75,6 °c
Optical efficiency a0
58,9% *
58,2% *
Coefficient a1
16 W/K/m² *
10,8 W/K/m² *
Coefficient a2
0 W/(M², K²) *
* The coefficients a0, a1and a2are derived from the ISO 9806:2017 certification tests for the non-glazed solar
collectors carried out by KIWA for a wind speed u = 1 m/s: a0 = n0- c6*u’; a1= c1+ c3*u’; u’ = u - 3.

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2.3.4 Thermal output vs. flow rate behaviour
-For domestic hot water (DHW) applications, the recommended nominal flow rate is 32 L/h/panel.
-For applications towards a thermal discharge, the recommended nominal flow rate is 100 L/h/panel. For
example, towards a swimming pool or geothermal probes.
-For direct pool heating applications, the recommended nominal flow rate is 200 L/h/panel.
The curves below are given as an indication.
Figure 2 : Delta T = f (Q) curves for DUALSUN Spring XXXM –60 –3BBPI –insulated version
Figure 3 : Delta T = f (Q) curves for DUALSUN Spring XXXM –60 –3BBPN –non-insulated version
0,0
5,0
10,0
15,0
20,0
25,0
30,0
35,0
025 50 75 100 125 150 175 200 225 250
DT° [°C]
FLOW RATE [L/H/PANEL
Delta T° vs. flow rate and irradiation
Tamb = 25°C and Tin = 25°C - wind = 1 m/s
DualSun XXXM - 60 - 3BPPI
DT (G=1000 W/m2) DT (G=800 W/m2) DT (G=500 W/m2)
0,0
5,0
10,0
15,0
20,0
25,0
30,0
025 50 75 100 125 150 175 200 225 250
DT° [°C]
FLOW RATE [L/H/PANEL
Delta T° vs. flow rate and irradiation
Tamb = 25°C and Tin = 25°C - wind = 1 m/s
DualSun XXXM - 60 - 3BPPN
DT (G=1000 W/m2) DT (G=800 W/m2) DT (G=500 W/m2)

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2.3.5 Pressure loss
The following values are derived from measurements with a glycol mixture (40%) and water (60%) at 30 °c.
Figure 4 : Pressure loss curves for DUALSUN Spring XXXM –60 –3BBPI and 3BBPN panels in portrait with DN15 fittings
Figure 5 : Pressure loss curves for DUALSUN Spring XXXM –60 –3BBPI and 3BBPN panels in landscape with DN15 fittings
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
050 100 150 200 250 300 350 400
PL (mmWS)
Flow rate (L/h/panel)
Pressure loss- DN 15 fittings (Glycol 40% @ T=30°C)
1
2
3
4
5
6
Number of panels
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
050 100 150 200 250 300 350 400
PL (mmWS)
Flow rate (L/h/panel)
Pressure loss- DN 15 fittings (Glycol 40% @ T=30°C)
1
2
3
4
5
6
Number of panels
PAYSAGE
PORTRAIT
* Recommended flow rate for DHW
** Recommended flow rate for thermal discharge

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The following values are derived from measurements with water at 40°C
Figure 6 : Pressure loss curves for DUALSUN Spring XXXM –60 –3BBPN panels in portrait with DN26 fittings
2.3.6 Recommended flow rates
Nominal flow rates:
Application
DHW*
Thermal discharge**
Direct pool heating
Nominal flow rate (L/h/panel)
32
100
200
* DHW : Domestic hot water
** Thermal discharge: Pressurised system with thermal exchanger or geothermal probes coupling
Minimum filling flow rate:
-Panel in portrait mode: 200 L/h/panel
-Panel in landscape mode: 250 L/h/panel
Maximum permissible flow rate: 400 L/h/panel
The choice of the flow rate directly impacts the hydraulic pressure.
2.3.7 Maximum authorized pressures
It is imperative never to exceed the following pressures in the DualSun panels:
Maximum service pressure = 1,5 bar
Maximum filling pressure = 2 bar
The maximum filling pressure corresponds to the pressure allowable in the panels to purge correctly the air during
hydraulic commissioning.
The temperature of the panels must be between 10 and 45°C during commissioning.
The pressure can be raised to 2 bar during a few minutes only.
At the end of the commissioning of the installation, the maximum service pressure to set is 1,5 bar.
0
500
1000
1500
2000
2500
3000
050 100 150 200 250 300 350 400
PL (mmWS)
Flow rate (L/h/panel)
Pressure loss- DN 26 fittings (Water @ T=40°C)
1
2
3
4
5
6
Number of panels
PORTRAIT

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2.4 General recommendations
2.4.1 Handling
DualSun modules must be handled like any glass product. To avoid accidents, injuries, or damage to the module during
work, the following precautions must always be followed:
•Do not walk on the modules.
•Do not drop anything on the modules.
•Protect modules from possible scratch on front and rear faces
•Do not exert any mechanical tension on the electrical connection.
•Always lift and transport the modules with both hands and never use the junction box as a carrying handle.
For the complete process of DualSun modules unconditioning and handling, see the DualSun file No. XX-04.
2.4.2 Transportation
In order not to damage the modules during transport, the following instructions must be followed:
•Transport stacked modules vertically, with a separator that supports the frame level of each module.
•Do not remove the original packaging until the time of installation.
•Do not apply mechanical pressure to the modules (for example, do not attach the modules using a strap, or
place any objects on the surface of the modules).
2.4.3 Storage
When storing, to avoid accidents or damaging the modules, the following instructions must be followed:
•Store the modules vertically.
•Do not store the modules on the edges, in a corner, or on an irregular surface.
•Do not place any objects on the surface of the modules.
•When choosing a suitable storage location, make sure that:
othe location is dry and cool,
oNo object can fall on the module and thus damage it.
If a DualSun module is damaged or broken, it is necessary to replace it. Never install a damaged
module.

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2.5 Technical considerations
Throughout the year, the system is exposed to external weather and natural conditions (Sun, wind, rain, hail, snow,
thunderstorms, dead leaves, dust, bird droppings, etc.) that influence the performance and lifespan of the modules.
To extend the life of the modules and to ensure that the installation is functioning properly, important factors and
adjustment parameters are to be considered:
2.5.1 Static requirements on the roof
The Solar Installer must ensure that the roof structure can carry the additional weight of the hybrid system.
2.5.2 Tilt angle
The optimal mounting position of DualSun solar panels results in a 90° incidence angle of sun rays relative to the
surface of the panels (i.e. Perpendicular to the panels). To maximize the productivity of the installation, panels should
be positioned at the optimum orientation and tilt angle. Those angles depend on the geographical location of the
installation and can be calculated by a qualified system designer. All panels in a string should, wherever possible, have
the same orientation and tilt angles to ensure the system does not underperform due to mismatched outputs.
2.5.3 Wind and snow load
The module has been tested up to a pressure of 5400 Pa in negative pressure (snow) and 2400 Pa in
positive pressure or negative (wind) without damage. It meets the requirements of the standard
IEC/EN 61215 for wind speeds up to 130 km/h.
2.5.4 System location
The overall output of the photovoltaic system in series is always limited by the module delivering the lowest power.
Different factors can influence the performance of a module (faults, shading, different orientations) and impact the
entire system.
Therefore, it is necessary to study the implantation to avoid a shading effect on the modules in series.
In addition, all panels must be mounted with the same orientation. It is advisable to align all modules to the South, to
achieve optimum performance.
DualSun suggests installing the modules in areas where temperatures range from-20 °c to + 50 °c, which corresponds
to the minimum and maximum monthly average temperatures, in compliance with IEC 60364-5-51. The extreme
operating temperatures of the modules are included between -40 °C and + 85 °C.
In areas with high snow conditions and exposed to strong winds, the assembly of the modules must be carried out in
such a way as to ensure sufficient nominal resistance and in accordance with local regulations.
130 km/h

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Some operating environments are not recommended for DualSun modules, and are excluded from the DualSun
limited warranty:
-No panel should be mounted on a site where it can be exposed to direct contact with saltwater, salt mist,
acid rain, active chemical vapours or any other aggressive environment.
-DualSun modules must not be installed near flammable liquids, gases, hazardous materials or any type of
vehicle.
-The maximum altitude the PV module is designed for ≤2000m
2.5.5 Types of mounting
The fastening of the modules must be secured by at least 4 points and spread according to the areas specified in the
diagram shown in chapter 0.
2.5.5.1 Integrated assembly
This assembly guarantees the retention of the original functionality of the roof. Special attention should be paid to
the insulation as well as to the protection against rain and humidity. To achieve this level of sealing, the module must
be mounted on a special frame that can route rainwater and withstand the wind and snow loads occurring in the
geographical area of the installation.
2.5.5.2 Over the roof assembly
The modules can be mounted on a frame designed to support
the photovoltaic panels. This framework must be able to
withstand the wind and snow loads occurring in the
geographical area of the installation. When fastening and
connecting the system to the building, it is necessary to avoid
damage or destruction of the roof covering in order to maintain
optimum resistance against rain and moisture.
The instructions given in the installation guide for the mounting system must be followed for
proper installation.
2.5.6 Fire/explosion protection
Do not install the DualSun modules in the vicinity of highly flammable gases, vapours, or dust (e.g., next to a gas station
or containers). The national and local fire prevention standards and regulations must be respected during installation.
For installations located on a roof, the modules must be mounted on a fire-resistant roofing cover adapted to the
application.
The DualSun modules have a class C fire resistance according to IEC/EN 61730-2.
Figure 7 : installation on K2 overlay system

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3Assembly and installation
The installation of DualSun panels must be managed and carried out by trained and qualified personnel.
The system must be assembled and operated according to the instructions provided, to comply with the
local and national health and safety, and risk prevention regulations.
When assembling and operating the system, no unauthorized person shall be located on or around the roof of the
facility.
3.1 Installing DualSun modules
The DualSun panels can be installed both in portrait and landscape orientation.
DualSun does not provide the mounting system for fastening the modules on the roof: please refer to the installation
instructions of the chosen mounting system, to install the modules whether for an integrated or for a superimposed
installation, in landscape or portrait.
The frame thickness and the dimensions of the Spring panel are identical to photovoltaic panels. It adapts easily to
photovoltaic mounting systems; however, it is necessary to ensure the positioning of the hoses in relation to the
mounting system frame and to the roof covering surface.
The mounting system must have a flat surface for mounting the panel and must not cause twisting or stress on the
panel, even in case of thermal expansion.
We also remind that the sealing is not ensured by the panels but by the roof covering system and that the evacuation
of the water must be foreseen.
It is necessary to provide a space between the frame of the panels and the structure or the floor to avoid damage to
the cables and hydraulic fittings.
The list of mounting systems compatible with DualSun modules is available in the “Mounting
systems compatibility" document on our website dedicated to professionals
Even when the solar radiation is low, the photovoltaic part of the system produces direct current
(DC). This DC current circulates from the module towards the inverter, do not manipulate the
module or the connections without protections.
The modules are class II qualified in compliance with IEC/EN 61215-2 and IEC/EN 61730-1
standards. These standards concern PV modules for use on buildings, or on ground structures.
Artificially concentrated solar radiation should not be directed to the module.

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The panel mounting systems must be installed only on buildings that have been formally validated for structural
integrity, and which have been considered capable of supporting the additional weight of the panels and mounting
systems, by a certified building specialist or engineer.
The supplier of the mounting system must take into account the galvanic corrosion which may appear between the
aluminium frame of the panels and the mounting system or the grounding parts if they are made of different metals.
The module is only certified when its original frame is completely intact. Do not remove or modify the module frame
in any way. Drilling additional mounting holes is likely to damage the module and reduce the strength of the frame,
and thus is not allowed.
The use of flanges and fasteners with additional grounding bolts or grounding connectors shall be in accordance with
this safety and installation instruction manual and according to the conditions in section 4.3.
The modules can be installed according to the following methods:
1. Frame holes: attach the module to the structure using the factory-made mounting holes. It is recommended
to use four M8x16 mm stainless steel screws with bolts, washers and lock washers for each module. The
maximum tightening torque of the bolts is 24 N.m.
2. Callipers or clamps: the brackets can be mounted on the longitudinal (longest side) or lateral (shortest side)
side of the module. The areas allocated to these clamps are specified in chapter 3.2 below. Installers must
ensure that the resistance of the clamps is sufficient given the maximum pressure to which the module can
be exposed. The clamps are not supplied by DualSun.
It is important to make sure that the clamping brackets do not distort the top of the aluminium frame of
the DualSun panel, this may weaken or even break the glass.
The tightening torque of the clamps must not exceed 24 N. m.
The compatibility of the mounting system with the modules must be assessed before any installation,
especially when the system does not use brackets or clamps.

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3.2 Mechanical installation
3.2.1 Positioning areas of mounting system rails
The hybrid DualSun Spring modules have the particularity of integrating a heat exchanger on the back of a photovoltaic
panel whose physical characteristics correspond to photovoltaic panels on the current market, 35 mm frame thickness
in particular.
Care must be taken not to overlay the rails of the mounting system with the hydraulic connections, the areas of which
are delimited in the above plan.
Figure 8 : Possible positions of the clamps to fasten DualSun XXXM-60-3BBP panels
Mounting system positions
Up to 2400 Pa
Up to 5400 Pa

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3.2.2 Raising the panels relative to the roof surface
It is necessary to ensure that the size of the hydraulic connections corresponds to the distance allocated by the laying
system, between the surface of the roof and the lower edge of the module frame, which will be in contact with the
mounting system.
Depending on the hydraulic nominal flow, two types of fittings have been designed. Their size at the rear of the module
is shown below.
Figure 9 : Overall dimensions of hydraulic connections on the rear panel
The bulk of the hydraulic fittings on the rear side of the DualSun Spring panels is to be considered
carefully to avoid contact of the fittings with the surface of the roof cover.
Tie the interpanel links to the modules or to the rails of the mounting system in order to avoid them to
lay on the roof cover.
Please compare the following characteristics of the flexible hoses of the interpanel links with the allowable height:
DN15
DN26
Dint/Dext (mm)
15/21
26/32
Bending radius –Rb(mm)
88
140
Table 1 : Dimensions and bending radius of the DN15 and DN26 interpanel hydraulic links
DN15 fitting
DN26 fitting

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3.2.3 Possible connection configurations with hydraulic links
In order to facilitate their routing in a maximum of configurations, the DualSun hydraulic links have been developed
to allow connection in portrait or landscape mode. It is thus possible to adapt the hydraulic links according to the
desired layout and also to bypass obstacles between the panels and the roof.
3.2.3.1 Panel mounted in portrait /
Hydraulic links in portrait
Figure 10 : Mounting configuration 1
Panel in portrait / Hydraulic link in portrait
3.2.3.2 Panel mounted in portrait /
Hydraulic links in landscape
Figure 11 : Mounting configuration 2
Panel in portrait / Hydraulic link in landscape
3.2.3.3 Panel mounted in landscape /
Hydraulic links in landscape
Figure 12 : Mounting configuration 3
Panel in landscape / Hydraulic link in landscape
3.2.3.4 Panel mounted in landscape /
Hydraulic links in portrait
Figure 13 : Mounting configuration 4
Panel in landscape / Hydraulic link in portrait
Thus, the hydraulic connections can be oriented so as to avoid the rails of the mounting system or to adapt to the
type of roof, in particular on trapezoidal sheet metal.

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3.2.4 Trapezoidal sheet metal roofing
In the case of a trapezoidal sheet metal roof, the hydraulic connections can be positioned in a corrugation recess to
limit the height of the modules.
The flexible hoses can either run perpendicular to the corrugations if the installation system raises the modules higher
than the hose diameters, see Table 1, or run in the corrugation recess in the opposite case.
A detailed layout plan is then mandatory to ensure that the hydraulic connections do not interfere with the roof
covering.
a. Checking the panel raising and positioning of the hydraulic links
DN15 fitting
See the characteristics of the DN15 hydraulic hose in table 1.
The minimum elevation of the module with regard to the corrugation crest is 22 mm.
In this case, the edge of the hydraulic fitting can be placed 34 mm to the edge of the corrugation crest.
Figure 14 : DN15hydraulic link routing through corrugation crest
DN26 fitting
See the characteristics of the DN26 hydraulic hose in table 1.
The minimum elevation of the module with regard to the corrugation crest is 36 mm.
In this case, the edge of the hydraulic fitting can be placed 60 mm to the edge of the corrugation crest.
Figure 15 : DN26 hydraulic link routing through corrugation crest

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b. Checking the roof layout
The positioning of the first module depends on the corrugation crest routing detailed above. Then check that each
DualSun fitting is correctly positioned in the corrugation recess, according to the width of the inter-panel clamps,
respecting the minimum distances for the routing of the hydraulic links through the corrugation crests.
Portrait layout
Figure 16 : Portrait layout
Landscape layout
Figure 17 : Landscape layout
Sheet metal roof with 333 mm corrugation length : Select an inter-panel distance of 16.67 mm if possible
and place the end of the module 325 mm from the centre of the corrugation crest. The position of the
modules will thus be identical in relation to the corrugation crests over the entire layout.
c. Checking the routing of the hydraulic links
Routing perpendicular to the corrugations –Configurations 3.2.3.1 and 3.2.3.3
The previous points allow to check the routing of the hoses perpendicular to the corrugations according to the
characteristics of the DN15 or DN26 hoses, to the height of elevation of the modules and to the positioning of the
hydraulic links in relation to the corrugations.
Routing parallel to the corrugations –Configurations 3.2.3.2 and 3.2.3.4
Routing through rails may occur according to the mounting system. In this case it is possible to run the hydraulic links
beneath or from the side of the rails.
It is necessary to ensure that :
-The height between the rails and the roof surface is greater than the external diameter of the flexible hoses,
see table 1 above.
-The bending radius of the flexible hose is greater than the minimum bending radius to avoid the rails, see
table 1 above.
-The rails are at a sufficient distance from the hydraulic fittings to comply with the minimum bending radii of
the flexible hoses within the permissible fixing areas, see 3.2.1.