REC TwinPeak 2S Mono 72 Series User manual

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REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
INSTALLATION MANUAL
REC 72-CELL MODULES
Installation instructions for all REC -cell size solar panels certified according to
IEC  & UL :
• RECTwinPeak S Mono  Series
• RECTwinPeak S Mono  Series

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
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CONTENTS
INTRODUCTION 
How to use this manual 
Your responsibility as an installer 
Support 
Liability disclaimer 
Limited warranty 
SAFETY MEASURES 
Safety in the working area 
Panel Handling 
ELECTRICAL INSTALLATION 
Electrical Requirements 
MECHANICAL INSTALLATION 
Fire guidelines 
Orientation 
Environmental factors 
PANEL INSTALLATION 
Rail specifications 
Clamp specifications 
Mounting RECTwinPeak S Mono  and RECTwinpeak S Mono panels with continous rails 
Mounting RECTwinPeak S Mono  and RECTwinpeak S Mono panels with short rails 
Drainage holes 
Grounding 
CABLES, CONNECTIONS AND CONNECTORS 
MAINTENANCE 
PANEL CHARACTERISTICS 
Technical characteristics: RECTwinPeak S Mono  & RECTwinPeak S Mono  XVSeries 
Technical characteristics: RECTwinPeak S Mono  Series 
ANNEX : INSTALLATIONS ON WATER PLATFORMS 
ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS 
DOCUMENT HISTORY 
Fig. : Example of rail cross-section 
Fig. : Panel mounting: Rails parallel to long side 
Fig. : Panel mounting: Rails parallel to short side 
Fig. : Clamp specifications: End and mid-clamps 
Fig. : Clamping the frame to rail 
Fig. : Clamping Zones on continous rails: RECTwinPeak S Mono ,
RECTwinpeak S Mono  
Fig. : Clamping Zones on short rails: RECTwinPeak S Mono ,
RECTwinpeak S Mono  
Fig. : Mounting holes: REC -cell panels (mm [in]) 
Fig. : Mounting hole specifications: REC -cell panels 
Fig. : Mounting hole installation: REC -cell panels 
Fig. : Drainage holes 
Fig. : Grounding specifications for GBL-DBT 
Fig. : Grounding holes 
Fig. : Connector mating matrix 
Fig. : Minimum cable bend radius 
Fig. : Panel dimensions: REC TwinPeak S Mono  Series 
Fig. : Panel dimensions: REC TwinPeak S Mono  Series 
Fig. : MLPE device installation zones 
LIST OF FIGURES

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REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
INTRODUCTION
Thank you for choosing REC photovoltaic panels for your installation. REC solar panels are ideal for delivering long-lasting and reliable power output.
They have been created through intelligent design and are manufactured to the highest quality and environmental standards. With correct installation
and maintenance, REC panels will provide clean, renewable energy for many years.
Please read this entire manual carefully. It contains critical information on safety, as well as detailed instructions for the installation, operation and
maintenance of thepanels. Failure tofollowthese procedures will invalidate the warranty (availableto download via www.recgroup.com/warranty). Review
all instructions and safety notes before working on the system. Failure to do so may lead to injury or damage to property.
HOW TO USE THIS MANUAL
This installation manual describes the procedures for the terrestrial mounting of all REC solar panels of a ‘-cell size’ of the REC Peak Energy and REC
TwinPeakproductfamilies(asindicatedbytheuseofthesuffixinthepanelname)certifiedaccordingtotheUL,IECandULstandards
in a photovoltaic array. This includes panels with a white or black backsheet, a silver or black frame, for a maximum system voltage of V or V,
and/or square or rectangular monocrystalline or multicrystalline cells. The installed panel is considered to be in compliance with UL  and
UL  only when mounted in the manner specified by this installation manual. Note that any panel without a frame (laminate) is not considered
to comply with the requirements of UL  and UL  unless mechanically installed with hardware that has been tested and evaluated with the
panel under this standard or by a field inspection certifying that the installed panel complies with the requirements of UL  and UL .
Except where specifically stated, the information and drawings within this manual refer to all frame, backsheet, and cell types; the illustrations are
meant to be a generic representation of the instructions detailed in the text regardless of the color depicted. Review this entire manual before
commencing installation of the panels and ensure you are working from the latest version. Throughout the manual, you will see icons which highlight
important information or notes:
Indicates potential for damage to the array, property or personal safety.
Indicates important notes on best practice to help with the installation.
For further information on installation procedures, please call your panel distributor or contact your local REC Solar office. Details can be found at:
www.recgroup.com/contact.
YOUR RESPONSIBILITY AS AN INSTALLER
Installers are responsible for the safe and effective installation and operation of the photovoltaic system and for adhering to all applicable local and
national standards and regulations. Prior to installation, check all current regulations and permits concerning solar installations and ensure all local
directives are observed. Furthermore, installers are responsible for the following points:
• Ensuring the REC solar panels are in a suitable condition for use and appropriate for the particular installation and environment,
• Using only parts that comply with the specifications set out in this manual,
• Ensuring a safe installation of all aspects of the electrical array.
All equipment should be properly maintained and inspected prior to use.
SUPPORT
Do not aempt to install REC solar panels when you are unsure of the procedure or suitability. For questions or guidance with your installation, please
call your distributor or contact your REC sales office, which can be found at: www.recgroup.com/contacts.
LIABILITY DISCLAIMER
REC SOLAR PTE. LTD. accepts no liability for the usability and functionality of its photovoltaic panels if the instructions in this guide are not observed.
Since compliance with this guide and the conditions and methods of installation, operation, use and maintenance of the panels are not checked or
monitored by REC SOLAR PTE. LTD., REC SOLAR PTE. LTD. accepts no liability for damage arising from improper application or incorrect installation,
operation or maintenance.This does not apply to damages due to a panel fault, in cases of loss of life, bodily injury or damage to health or in the event of a
grosslynegligentbreach of obligations onthepartof REC SOLAR PTE. LTD.and/orinthe eventof an intentional orgrosslynegligentbreach of obligations
by a legal representative or vicarious agent. REC reserves the right to make changes or amendments to this manual at any time, without prior notice.
This document may be produced in different languages. If there is any conflict, the English language version shall be definitive.
LIMITED WARRANTY
The REC Limited Warranty is available to download from www.recgroup.com/warranty. Ignoring any of the instructions in this manual may be classed
as improper installation or use and invalidate theWarrantyTerms and Conditions. If you have any questions about installation and the Warranty validity,
please contact REC’s technical support.
Caution: Only qualified personnel should perform work on photovoltaic systems such as installation, commissioning, maintenance and
repairs. Be sure to follow the safety instructions for all system components. Ensure relevant local codes and regulations for health and
safety and accident prevention are observed.

REC Installation Manual - -Cell products according to UL 
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SAFETY MEASURES
Installers are responsible for the safe and effective installation and operation of the system and for adhering to all applicable local and national
standards and regulations. All relevant local codes and regulations should be referred to and observed as well as regulations on working at heights and
fall protection.
SAFETY IN THE WORKING AREA
i) Safety in the working area
Installation of REC solar panels may involve working on rooops or raised platforms. Ensure all local regulations regarding working at heights are
followed. Before beginning work on a photovoltaic system, ensure all working surfaces are structurally sound and capable of bearing the weight of
employees and required equipment.
Remember to isolate the system from the grid before carrying out any maintenance or repair work.
ii) Preventing current generation
To prevent the panels automatically generating current (electricity) when exposed to light, shield the system with a non-transparent cover during
installation, maintenance or repair work.
iii) Specific hazards of DC electricity
Solar panels generate direct current (DC). Once current is flowing, breaking or opening a connection (e.g., disconnecting two panels) can cause an
electrical arc. Unlike low voltage AC wiring, DC arcs are not self-extinguishing.They are potentially lethal burn and fire hazards:
• Follow panel and inverter manufacturers’ installation, handling and operating instructions,
• Remove/open the inverter AC fuse/circuit breaker before disconnecting from the public grid,
• Switchoffordisconnecttheinverter and waitforthetimespecifiedbythe manufacturerbefore commencingwork.High-voltage components need
sufficient time to discharge.
iv) Safety requirements
The voltage produced by a single panel and panels connected in series (voltages added together) or in parallel (currents added together) can be
dangerous.Althoughthefullyinsulatedplugcontactsonthepanel’s output cables provide touch-safeprotection, the followingpointsmustbeobserved
during handling to avoid the risk of sparking, fire hazards, burns and lethal electric shocks:
• Exercise extreme caution when wiring panels and look out for damaged or dirty cables etc,
• Never insert metallic or other conductive objects into plugs or sockets,
• Ensure that all electrical connections are completely dry before assembly,
• Keep all materials, tools, and working conditions dry and tidy,
• Use appropriate safety equipment e.g., non-slip footwear, insulated gloves and insulated tools,
• Solar panels produce current when exposed to sunlight. Do not connect the system to the inverter during solar exposure.
PANEL HANDLING
To avoid damage to the solar cells and other components, all REC solar panels should be handled with care and protected from damage at all times. All
warnings and instructions on the packaging should be observed. Follow these guidelines when unpacking, transporting or storing panels:
• Record the serial numbers prior to installation and note the information in the system documentation,
• Carry the panels using both hands and do not use the junction box or cables as a grip,
• Do not allow the panels to sag or bow under their own weight when being carried,
• Do not subject panels to loads or stresses, e.g., leaning on them or through the placing of weight on them,
• Do not stand on the panels,
• Avoid dropping the panels as any damage caused may be unseen,
• Keep all electrical contacts clean and dry,
• Store panels in a dry and properly ventilated room,
• Do not apply force to the backsheet,
• Avoid using sharp or pointed objects if panels require marking,
• Never apply paints, adhesives or detergents to the back of the laminate,
• Do not use any solar panel that is damaged or been tampered with,
• Never aempt to disassemble, modify, or adapt the panels or labels in any way as this will void the warranty.
Do not use a panel which is broken or damaged. If the panel front glass is broken or laminate back sheet is damaged, it can expose personnel
to hazardous voltages.

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REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
ELECTRICAL INSTALLATION
ELECTRICAL REQUIREMENTS
i) System Requirements
REC solar panels are only for use where they meet the specific technical requirements of the complete system. Ensure other components will not cause
mechanical or electrical damage to the panels. Only panels of the same type and power class should be connected.
ii) String configuration
When using string configuration, plan and execute it according to the inverter manufacturer’s instructions. The number of panels connected to an inverter
must be within the inverter voltage limits and operating range. Do not exceed the total system voltage permied by the manufacturer, nor under any
circumstance exceed the maximum system voltage as stated in the applicable product technical specifications at the rear of this manual. The maximum
system fuse rating and the maximum reverse current for each panel can be found in the technical specifications for the product at the rear of this manual.
The maximum number of panels in a string can be calculated by dividing the maximum system voltage of the panel by its VOC accounting for the lowest ambient
temperature at site, e.g.: for a V system, if the lowest ambient temperature is °C, the panel has aVOC of .V and a temperature coefficient ofVOC of
-./°C, the maximum panels per stringis  (∆T°C =° - ° =°; ° x . =.; . + .= .; V/ . =., so a total of  panels or 
V). Qualified system designers can make exact calculations that account for specific project requirements and site conditions.
iii) String connection
If panels are connected in series, they must have the same ampere rating; if panels are connected in parallel, they should have the same voltage rating.
The maximum number of panels that can be connected in series or parallel depends upon system design, type of inverter and environmental conditions.
Panel and string configuration must correspond to the specifications of other system components e.g., inverter. Refer to the reverse current rating of
the panel as indicated in theTechnical Characteristics section to the rear of this manual or on the panel datasheet.
iv) Wiring layout
To minimize voltage surges (e.g., indirect lightning strikes), cables of the same string must be bundled together so loops are as small as possible. String
configurations must be checked before commissioning. If open circuit voltage (Voc) and short circuit current (Isc) deviate from specification, this may
indicate a configuration fault. Correct DC polarity must be observed at all times.
v) Electrical Ratings
Electrical ratings are within a specific tolerance of measured values at StandardTest Conditions (STC) as given in the technical specifications for each
panel at the rear of this manual. Allow for increased panel output as a result of conditions different to STC by multiplying the ISC and VOC values of the
panel by . (or according to local regulations) for electrical system installation.

REC Installation Manual - -Cell products according to UL 
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MECHANICAL INSTALLATION
Common hardware items such as nuts, bolts, star washers, lock washers and the like have not been evaluated for electrical conductivity or
for use as grounding devices and should be used only for maintaining mechanical connections and holding electrical grounding devices in
the proper position for electrical conductivity. Such devices, where supplied with the module and evaluated through the requirements in UL
 and UL , may be used for grounding connections in accordance with the instructions provided with the module.
FIRE GUIDELINES
The REC solar panels covered by this manual have a Class C (referencing UL) and Type  fire classification according to UL/UL.
The fire performance rating of the panels is only valid when mounted in the manner specified in this installation manual.The complete system fire class
rating is to be achieved by the combination of panel fire performance type and UL certified mounting structure for a non-BIPV panel. Please refer
to mounting structure UL listing for System Fire Classification. Any specific limitations on the inclination or accessories required to maintain a
specific System Fire Class Rating must be clearly specified in the mounting system manufacturer’s installation instructions and UL certification.
Utilize the following fire safety guidelines when installing REC panels:
• Check with all relevant local authorities for fire safety requirements for any building or structure on to which the panels will be installed,
• The system design must ensure that it can be easily accessed in the event of a building fire,
• Check with relevant authorities for applicable regulations concerning setbacks or other placement restrictions that may apply for roof-mounted arrays,
• The use of DC ground fault interrupters is recommended.This may also be required by local and national codes,
• Allelectricalappliancesareafirerisk.Thepanel mustbemountedoverafireretardantroofcoveringratedfortheapplicationandaminimumdistance
of . in ( mm) between the panel and the mounting surface, allowing free circulation of air beneath the panels must be respected at all times.
ORIENTATION
The optimal mounting position of panels results in the sun’s rays falling perpendicular (i.e., at °) to the surface. To maximize system output, panels
should be installed at the optimum orientation and tilt angle. The specifics of this depend on location and can be calculated by a qualified system
designer. All panels in a string should, wherever possible, have the same orientation and tilt to ensure the system does not underperform due to
mismatched outputs.
Dependent on local conditions, a lower angle of installation will potentially increase the requirement for regular cleaning.
The solar panels must not be exposed to artificially concentrated light.
ENVIRONMENTAL FACTORS
REC solar panels are designed to provide decades of durable and stable output in installations up to   ( m) above sea level. Ambient
operating temperatures must be between -° and +°F (-° and +°C).
For further information regarding installations on water platforms, e.g., floating pontoons, see Annex  at the rear of this manual.
The panels are not suitable for installation in potentially hazardous locations nor should they be installed in the following locations:
• Near sources of flammable gas or vapor e.g., gas stations, gas containers or spray paint facilities,
• Near open flames,
• Under water or in water features,
• Where exposed to sulfur e.g., near sulfur springs or volcanoes,
• Where the panels may be exposed to harmful chemicals.
Ensure panels are not exposed to direct contact with salt water/spray.

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REC Installation Manual - -Cell products according to UL 
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PANEL INSTALLATION
REC solar panels are designed for capturing solar radiation and can be installed where they conform to all local structural regulations. If installing REC
solar panels in overhead or vertical constructions, the installer must ensure that all local building codes and regulations specific to such installations
are correctly followed. The panels are considered to be in compliance with UL standards, only when the panel is mounted specified by the mounting
instructions below. The IP rating of the junction box provides a level of protection that allows panels to be mounted in any orientation (see product
technical specifications for exact rating).
Panels must be installed so that the cells are not shaded as this will drastically reduce electrical output. If partial shading is inevitable at
certain times of the day or year, it must be kept to an absolute minimum.
There are different options for securing REC solar panels depending on the array design. Ensure the mounting structure can withstand anticipated wind
and snow loads. Mounting hardware is not supplied by REC. Follow the mounting hardware manufacturer’s instructions and recommendations at all times.
Remove any labels or stickers that may be on the front of the panels and ensure no residue is le on the glass.
There must be a minimum clearance gap of . in ( mm) between the uppermost part of the installation surface (e.g., rooop) and the
lowest part of the panel (i.e., underside of module frame) to avoid any damage to the panel and to ensure sufficient airflow for cooling,
helping to improve performance. The surface below the modules must be kept clear of any objects that may cause damage to the panel.
RAIL SPECIFICATIONS
REC solar panels are typically installed on a rail-based mounting system (fig. ). Installers must ensure that the rails are suitable for the system design and
expected design loads. If using mounting rails, ensure they run parallel to the frame (fig. ) or across the module, underneath the frame (fig. ) and that rails
are positioned directly under the module clamping zones shown on the subsequent pages.
Fig. : Panel mounting: Rails parallel to long side
Fig. : Panel mounting: Rails parallel to short side
Fig. : Example of rail cross-section
Rail positioning
Rail positioning

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CLAMP SPECIFICATIONS
REC modules must be secured with a torque between - lbf/in ( -  Nm). REC TwinPeak S Mono  panels have been evaluated by UL for
mounting using rails in combination with end and mid clamps, ASTM FC stainless steel screw and rail nuts with the below ratings and dimensions.
Alternatively clamps suitable for the planned installation and expected system design loads and that meet the specifications shown in the table below
can be used to secure the panel to the mounting structure:
Criteria Specification Material Specification
Minimum yield strength  ton/ ( MPa)
Minimum tensile strength  ton/ ( MPa) e.g.,  T alloy
Minimum grip length . in ( mm)
Minimum grip depth . in ( mm)
Minimum thickness of load carrying walls . in ( mm )
Screw connection . in ( mm) bolt, nut & washer ASTM FC (stainless steel)
• Clamps must have a minimum grip length of . in ( mm), a minimum grip depth of . in  mm) as indicated in fig. .The grip area must not extend
onto the panel frame and cause cell shading,
• Panels must be clamped in a minimum of two points per long-side of the frame (a minimum of four clamping points per panel),
• Use appropriate bolted connections as per clamp manufacturer’s instructions (fig. ),
• Follow the clamp manufacturer’s recommended applied torque to fasten the clamps.
In areas of snow build-up panels can be subjected to forces in excess of the stated limit even when snow depth does not appear extreme,
causing damage to the framework. If the installation is likely to be affected by this, further suitable panel support is recommended on the
lower row of panels.
In the case of any questions regarding mounting systems, or if the mounting system to be used does not match any of the instructions
shown in this installation manual, please contact REC for further support.
Rail
Clamp
Fig. : Clamp specifications: End and mid-clamps
Fig. : Clamping the frame to rail
Min. grip depth: . in ( mm)
Walls exposed to buckling load:
min . in ( mm)
Min. grip depth: . in ( mm)
Min. grip length:
. in ( mm)
Min. grip length:
. in ( mm)
Legend
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
  . in
(   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
.  . in
   mm)
+ Pa /  Pa
(+ Pa/Pa)
+ Pa /  Pa
(+ Pa/Pa)
.  . in
   mm)
+ Pa /  Pa
(+Pa /Pa)
+ Pa /  Pa
(+Pa /Pa)
.  . in
   mm)
+ Pa /  Pa
(+ Pa/Pa)
+ Pa /  Pa
(+ Pa/Pa)
Legend
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
  . in
   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
Once a module is secured in each of the  zones, additional clamps, i.e., ≥may be freely located on panel frame without affecting the warranty.
Loads marked with a *were not certified as part of IEC / UL  testing; these have been evaluated by REC’s internal testing process.


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
MOUNTING REC TWINPEAK S MONO  AND RECTWINPEAK S MONO  PANELS WITH CONTINOUS RAILS
Mounting using clamps: Long side
The above named REC -cell product families can be secured with continous rails using clamps where both clamps and rails are located within the
constraints shown in fig. . Mounting with continous rails utilizing clamps has been found to be in compliance with UL  requirements for design
loads up to . psf ( Pa) downwards force and . psf ( Pa) upwards force according to the clamping position. Panels must be clamped in
a minimum of four individual clamping zones as shown below. Site-specific loads such as wind or snow which may exert force in a different way need to
be taken into consideration to ensure this limit is not exceeded.
Each panel must be clamped at a minimum of four points, with one clamp in each of the four zones marked  shown in fig..
• Clamps and rails must be located and secured at a distance between .  . in ( -  mm) from the panel corner (fig. ).
• REC modules must be secured with a torque between  -  lbf/in ( -  Nm). Clamp installation must be carried out according to the
manufacturer’s instructions, including specific hardware and torque requirements.
Fig. : Clamping Zones on continous rails: RECTwinPeak S Mono , REC Twinpeak S Mono  (measurements in diagram shown in in [mm])
13.8 in [350 mm]
7.9 in [200 mm]
20.5 in [520 mm]
26.4 in [670 mm]
13.8 in [350 mm]
7.9 in [200 mm]
20.5 in [520 mm]
26.4 in [670 mm]
0
9.8 in [250 mm]
0
0
9.8 in [250 mm]
0
 
 
Rail positioning
Legend
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
  . in
(   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
.  . in
   mm)
+ Pa /  Pa
(+ Pa/Pa)
+ Pa /  Pa
(+ Pa/Pa)
.  . in
   mm)
+ Pa /  Pa
(+Pa /Pa)
+ Pa /  Pa
(+Pa /Pa)
.  . in
   mm)
+ Pa /  Pa
(+ Pa/Pa)
+ Pa /  Pa
(+ Pa/Pa)
Legend
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
  . in
   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
Once a module is secured in each of the  zones, additional clamps, i.e., ≥may be freely located on panel frame without affecting the warranty.
Loads marked with a *were not certified as part of IEC / UL  testing; these have been evaluated by REC’s internal testing process.
Long Side Mounting
Rail position
Rail position
Rail positioning
Short Side
Mounting
The center point of each clamp and the minimum grip length must be fully located in the same clamping zones to be rated to that load
(fig. ). If the panel is secured in zones with different load values, it is rated to the lowest load value only.

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE

MOUNTING REC TWINPEAK S MONO  AND RECTWINPEAK S MONO  PANELS WITH SHORT RAILS
Mounting using clamps: Long side
The abovenamed REC-cell productfamiliescan besecured withshort railsusing clampswhere bothclamps andrailsare locatedwithin theconstraintsshown
in fig. . Mounting with short rails utilizing clamps has been found to be in compliance with UL  requirements for design loads up to . psf ( Pa)
downwardsand upwardsforce according to the clamping position. Panelsmustbeclampedinaminimum of fourindividual clamping zones as shownbelow.Site-
specific loads such as wind or snow which may exert force in a different way need to be taken into consideration to ensure this limit is not exceeded.
Each panel must be clamped at a minimum of four points, with one clamp in each of the four zones marked  shown in fig..
• Clamps and rails must be located and secured at a distance between   . in ( -  mm) from the panel corner (fig. ).
• REC modules must be secured with a torque between  -  lbf/in ( -  Nm). Clamp installation must be carried out according to the
manufacturer’s instructions, including specific hardware and torque requirements.
Fig. : Clamping Zones on short rails: RECTwinPeak S Mono , REC Twinpeak S Mono  (measurements in diagram shown in in [mm])
7.9 in [200 mm] 7.9 in [200 mm]
0
9.8 in [250 mm]
0
0
9.8 in [250 mm]
0
 
 
The center point of each clamp and the minimum grip length must be fully located in the same clamping zones to be rated to that load
(fig. ). If the panel is secured in zones with different load values, it is rated to the lowest load value only.
Legend
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
Rail length under
module
 - . in
( -  mm)
Min. 1 in (25 mm)
Max. 7.9 in (200 mm)
  . in
(   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
Clearance Gap
Clamping zone
>. in > mm) >. in ( > mm)
Test Load
(DesignLoad) Test Load (DesignLoad)
  . in
   mm)
+ Pa /  Pa*
(+Pa/ Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
Once a module is secured in each of the  zones, additional clamps, i.e., ≥may be freely located on panel frame without affecting the warranty.
Loads marked with a *were not certified as part of IEC / UL  testing; these have been evaluated by REC’s internal testing process.
Short Side Mounting
Long Side
Mounting


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
DRAINAGE HOLES
Each corner of the panel frame has small drainage holes that allow water caused by rain, condensation, snow melt, cleaning or any other process to exit
the frame easily and to minimize damage caused by freezing and thawing (fig. ).These holes must not be used for mounting the panel.
To enable effective drainage and ensure there is no damage to the module, the drainage holes must remain fully open and enable water
egress during and aer installation.
The shape and dimensions of the drainage holes may vary slightly from the above image depending on product and/or frame design.
0 - 208
235 - 335
0 - 208
235 - 335
0 - 208
235 - 335
0 - 208
235 - 335
GR
GR
GR
Fig. : Drainage holes
Mounting holes
All REC -cell panels have been certified for installation using the four elongated holes . x . in ( x . mm) on the underside of the panel
frame at a distance of . in ( mm) from the short side edge (fig. ), utilizing rails and bolts matching the specifications in fig. . Installation
of REC -cell panels using mounting holes complies with UL  requirements for a maximum downward design load of . lbs/
( Pa) downward force and . lbs/ ( Pa) upwards force. When installing in this way, the frame must be supported by two transverse rails (figs.
 & ) of aluminium or galvanized steel (to avoid galvanic corrosion) suitable for the application and appropriate for the local environment.These must be
held in position by bolts and flange nuts as per the specifications below. Observe the following procedures when using mounting holes:
• The mounting construction should be of aluminium or galvanized steel to avoid galvanic corrosion and be appropriate for the local environment.
• Additional electrical bonding to Ground is required for the support structure.
• All four mounting holes in the frame must be used.
• Tighten fastenings using a torque wrench according to the mounting structure manufacturer’s instructions.
There are four mounting holes on the underside of the long frame side spaced . in ( mm) from the center (. in (. mm), . in
( mm forTwinPeak S Mono ) from the corner). These are intended for use with specific tracker systems only, and not for rail-based systems.
Unauthorized use of these may void the warranty. Consult first with REC if you need to use these for installation, otherwise only the mounting holes
shown in fig.  are to be used.
The product warranty will be voided if additional holes are made in the frame. All fixing and fastening materials must be corrosion resistant.
Part Name Specification Material
Rail  - T aluminum extrusion
Bolt /” x  - /”
(. mm x  x . mm) ASTM F (stainless steel)
Nut /” x  (. mm x ) ASTM F (stainless steel)
TwinPeak 2S 72
Scale 1:1
04.10.16
460 [18.1]
11 [0.43]
6.6 [0.26]
20.5 [0.81]
GR
GR
GR
GR
Fig. : Mounting holes: REC -cell panels (mm [in]) Fig. : Mounting hole specifications: REC -cell panels Fig. : Mounting hole installation: REC -cell panels

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE

GROUNDING
Apanelwith exposedconductiveparts is consideredtobein compliancewithUL and ULonly when itiselectrically grounded inaccordance
with the instructions presented below and the requirements of the National Electrical Code.When grounding a panel, it must be done using an electrical
connection from the panel frame. REC solar panels have a clearly marked, small round Ø  mm grounding hole positioned near each corner of the panel
to aid in grounding as shown in fig.  (exact positioning can be seen in the Technical Characteristics section at the rear of this manual); these can be
further identified by the grounding symbol stamped in the frame next to it. Grounding is achieved through securement to the panel frame of UL listed
grounding clips/lugs as specified in fig.  in combination with the REC solar panel(s). Check all applicable requirements before beginning installation.
• Suitable grounding clips/lugs must be used: Listed: (KDER) ILSCO, GBL-DBT(tin plated) (E).
• Grounding cable size must be between    AWG (.  . mm)
• Aach clips/lugs to the grounding holes in the panel frames.
• Affix to the frame using a  star washer and  lock nut, ensuring a conductive connection (fig. ).
• Place the star washer between the frame and the nut, using a . in (mm) diameter stainless steel bolt and locking nut to mount the lug to the
panel frame and tighten according to the manufacturer’s recommended torque
Where common grounding hardware (nuts, bolts, star washers, split-ring lock washers, flat washers and the like) are used to aach a
grounding device, the aachment must be made in conformance with the grounding device manufacturer’s instructions.
To avoid galvanic corrosion, stainless steel fastening materials are preferred, however galvanized or hot dipped zinc plated fasteners are
equally suitable.
Negative grounding of the modules is not required.
Cross section [AWG] Type Torque [in-lbs]
 -  Stranded 
 Stranded 
 -  Stranded/Solid 
Fig. : Grounding holes
Fig. : Grounding specifications for GBL-DBT


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
CABLES, CONNECTIONS AND CONNECTORS
All connectors and cables must be checked to ensure they are secure and tight as well as electrically and mechanically sound. UV-resistant cables and
connectors approved for outdoor use must be used. Conductor gauge must be chosen to ensure DC power losses (voltage drop) are kept to a minimum (<).
Observe all local regulations when selecting cables. For string connections, use minimum  AWG ( mm) copper wires insulated for a maximum
operating temperature of °F (°C). Secure cables using UV-resistant cable ties or other device. Loose and unsecured cables must be protected
from damage (e.g., mechanical, abrasion, sharp objects, animals). Avoid exposing cables to direct sunlight and permanent tension.
In order to ensure durable and safe connections between panels and BOS equipment, the following instructions must be followed in order to protect the
electrical connections from the elements. Further information is given in the
Guide to Best Practice - Connections and Connectors which can be found
via the REC online Download Center (www.recgroup.com/downloads).
Safetyisparamountwhenworkingwithelectricalconnectors.Ensurethatanyinstallationworkisnotcarriedoutonliveorload-carryingparts.Connections
must not be disconnected under load and the system must be isolated from the grid before carrying out any maintenance or repair work.
CONNECTORS
The exact connector type used on REC solar panels is indicated in the product specifications at the rear of this manual. The stated IP rating is only valid
when correctly mated. To ensure connector compatibility and reduce the potential for damage to the modules and the installation, mated connectors
mustbe fromthesame manufacturerandofthe same(i.e., mateable)connectortype andsystemrating.Connections mayalsobe madeusing connectors
that are certified as mateable.
Fig. : Connector mating matrix
Connector  +Connector  Permied?
REC Factory-Installed + Stäubli MC Evo- On VSystems
REC Factory-Installed + Stäubli MC On VSystems only
REC Factory-Installed + REC Factory-Installed 
REC Factory-Installed + Any other connector 
Installers are responsible for the compliancy of the system with any local regulations regarding the mating of connectors, e.g., NEC . (B).
The cuing of panel cables is only permied in order to replace a factory-installed connector with another brand of connector to ensure
‘like-for-like’ mating when connecting to a non-REC external device. All other changes are prohibited and will invalidate the REC warranty.
The connector replacement procedure must be carried out by the installer correctly according to the replacement connector manufacturer’s
instructions. The selected replacement connector must also fulfil all relevant technical specifications and be certified according to
applicable standards (e.g., IEC  or UL ) so as to ensure they are fit for purpose and safety. The REC warranty does not extend to
cover any fault traceable to the replaced connectors.
• The secure connection of connectors is identified by a firm click once inserted.
• The use of any chemicals or lubricants on the connectors or contacts must be carried out in line with the connector manufacturer’s instructions.
Any other modification to the panel is prohibited, including the opening of the junction box, unless explicitly authorized by REC. Doing so
will invalidate the warranty.
PROTECTING THE CABLES
• To prevent stress on the junction box casing, ensure the cable exits the junction box in a straight line before any bend in the cable.
• The cables on REC solar panels have a minimum bending radius of . in ( mm) to avoid damage to the insulation (fig. ).
• Ensure cables do not hang loose where they may be damaged through friction or stress, e.g., caused by wind or grazing animals.
• Shield connectors from falling or dropping water by locating them directly beneath a panel.
• Cables must be firmly secured to the structure, without over-tightening, as this can deform the cable insulation.
SECURING CABLES AND CONNECTORS
• When securing the connector, place it so that it has with sufficient air circulation all around.This allows the connector to dry effectively and avoids
the risk of damage or degradation of the connection.
• Good practice is to secure the cable either side of the connectors, ensuring no stress is exerted on the connector casing or cable entry.
To enable correct cooling and drying of the connectors, do not add extra protection to the connector, e.g., heat shrink, grease or tape.
Fig. : Minimum cable bend radius
< 60 mm >
< 30 mm >
<  mm [. in] >
<  mm [. in] >

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE

MAINTENANCE
CLEANING INSTRUCTIONS
REC solar panels have been designed for easy maintenance. The need for cleaning the solar panels will vary dependent on location, rainfall, air pollution
levels and the angle of installation – the lower the angle of installation, the more cleaning will be required. ‘Normal’ rainfall will naturally clean the panels
if installed at a sufficient angle.To optimize electrical output it is recommended to clean the panels when dirt can be seen on the glass surface.
Panel cleaning should always be carried out when the panels are cool to avoid breakage through thermal shock, e.g., in the morning.
The build up of dirt on the panel surface over time may cause cell shading which will reduce power output or can even cause further damage. To clean
either the front or rear of the panels, use only deionized water free from grit and physical contaminants, at ambient temperature and use a sponge,
microfiber cloth or a so brush to wipe away the dirt (rainwater, tap water or diluted alcohol may also be used as a secondary solution). For further
cleaning a mild, biological and biodegradable washing-up liquid may be used.
When cleaning the panel, take care not to scratch the surface or introduce foreign elements that may cause damage. Ensure the water used is free
from grit and physical contaminants that may damage the panel. Always rinse the panel with plenty of water. If soiling remains on the panel, repeat the
cleaning process. If stains require more effort to be removed, Isopropyl alcohol of a concentration less than  may be used. Acid or Alkali detergent
may not be used.
Use of high pressure hoses or cleaners is not permied as these may damage the panels, laminate or cells.
Using a so rubber squeegee, wipethe panel surface from thetop downwards to remove any residual water from the panel glass. Panels can be le to dry
in the air or wiped dry with a clean and so cloth or chamois. Avoid puing pressure on the on the panel surface when drying, e.g., leaning or standing on it.
For more information on cleaning REC solar panels, consult the
REC Cleaning Information Sheet which is available to download from the online REC
Download Center www.recgroup.com/downloads. If in doubt at any time when cleaning the panels, stop and obtain professional advice.
SYSTEM INSPECTION
The system should be inspected regularly to ensure that:
• Fasteners are secure, tight and free from corrosion,
• Electrical connections are secure, tight, clean, and free of corrosion,
• The mechanical integrity of the cables is intact,
• Bonding points to ground are tight, secure and free from corrosion (which could break the continuity between the panels and ground).
RECYCLING
REC makes every effort to ensure panel packaging is kept to a minimum. The paper and cardboard packaging can be recycled and the protective wrapping
and panel separating blocks are also recyclable in many areas. Recycle packaging and modules according to local guidelines and regulations.
DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT
Modules should be recycled at the end of their useful life according to local guidelines and regulations. By ensuring REC solar panels are disposed of
correctly,youwillhelppreventpotentialnegativeconsequencesfortheenvironmentandhumanhealthwhichcouldotherwisebecausedbyinappropriate
waste treatment. The majority of the module components can be recycled.


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
Fig. : Panel dimensions: RECTwinPeak S Mono  Series
Fire classification: Type  ( V XV: Type   V;
IEC , IEC , IEC  (PID), IEC  (Ammonia),
IEC  (Salt Mist level 6,
ISO : , ISO : , OHSAS : 
Ref: PM-DS-- Rev-D .
2005 [78.9 ] ±2.5
1085 [42.7]
28 [1.1]
960 [37.8]
45 [1.8]
17.7 [0.7]
30 [1.2]
1001 [39.4 ] ±2.5
460 [18.1]
11 [0.43]
6.6 [0.26]
20.5 [0.81]
802.5 [31.6]
200 [7.9 ]
GR
710 [28.0]
22.55 [0.9]
1200 [47]
1200 [47]
GR
GR
GR
20.0%
20
25
GENERAL DATA
MECHANICAL DATA
MAXIMUM RATINGS
WARRANTY
CERTIFICATION
Dimensions: ."x ." x." ( x xmm)
Area: .  . m
Weight: . lbs ( kg)
EFFICIENCY
YEAR PRODUCT WARRANTY
YEAR LINEAR POWER
OUTPUT WARRANTY
year product warranty
year linear power output warranty
Max. performance degression of . p.a. from  . in year 
See warranty conditions for further details.
TEMPERATURE RATINGS
All measurements in mm [in]
ELECTRICAL DATA  STC Product code*: RECxxxTPSM 
Nominal Power -PMAX (Wp)       
Wa Class Sorting- (W) /+ /+ /+ /+ /+ /+ /+
Nominal Power Voltage - VMPP (V) . . . . . . .
Nominal Power Current- IMPP (A) . . . . . . .
Open Circuit Voltage- VOC (V) . . . . . . .
Short Circuit Current- ISC (A) . . . . . . .
Panel Efficiency () . . . . . . .
Values at standard test conditions STC (airmass AM ., irradiance  W/m, cell temperature °F (°C).
At low irradiance of  W/m (AM . and cell temperature °F (°C at least  of the STC module efficiency will be achieved.
* xxx indicates the nominal power class (PMAX) at STC, and can be followed by the suffix XV for modules with a  V maximum system rating.
ELECTRICAL DATA  NMOT Product code*: RECxxxTPSM 
Nominal Power -PMAX (Wp)       
Nominal Power Voltage - VMPP (V) . . . . . . .
Nominal Power Current- IMPP (A) . . . . . . .
Open Circuit Voltage- VOC (V) . . . . . . .
Short Circuit Current- ISC (A) . . . . . . .
Nominal cell operating temperature NOCT ( W/m, AM ., windspeed  m/s, ambient temperature 68°F(°C).
* xxx indicates the nominal power class (PMAX) at STC, and can be followed by the suffix XV for modules with a  V maximum system rating.
Specifications subject to change without notice.
Cell type:  half-cut monocrystalline PERC cells
 strings of  cellsinseries
Glass: ." (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highlyresistantpolymericconstruction
Frame: Anodized aluminum
Support bars: Anodized aluminum
Junction box: -part,  bypass diodes, IP rated
in accordance with IEC 
Cable:  mm solar cable, . m + . m
in accordance with EN 
Connectors: Stäubli MC-Evo
PVKBTEVO/PVKSTEVO mm)
in accordance with IEC , IP only when connected
Tonglin TL-CableSF( mm)
in accordance with IEC , IP only when connected
Origin: Made in Singapore
Operational temperature:  ... +°F  ...+°C
Maximumsystem voltage: V/V
Design load (+):snow . lbs/ (Pa)+
Maximumtest load(+): . lbs/ (Pa)*
Design load (-):wind . lbs/(Pa)+
Maximumtest load(-): . lbs/ ( Pa)*
Maxseriesfuserating: A
Maxreversecurrent: A
+Calculated using a safety factor of .
*See installationmanual for mounting instructions
Nominal Module Operating Temperature: .°C(±°C)
Temperature coefficient of PMAX: . /°C
Temperature coefficient of VOC: . /°C
Temperature coefficient of ISC: . /°C
*The temperature coefficients stated are linear values
PANEL CHARACTERISTICS
TECHNICAL CHARACTERISTICS: REC TWINPEAK S MONO  & REC TWINPEAK S MONO  XV SERIES

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE

TECHNICAL CHARACTERISTICS: REC TWINPEAK S MONO  SERIES
Fig. : Panel dimensions: RECTwinPeak S Mono  Series
UL , Fire classification: Type  ( V XV;
IEC , IEC ,
ISO : , ISO : , OHSAS : 
Ref: PM-DS-- Rev-A .
2008 [79.1] ± 2.5
1091 [42.95]
28 [1.1]
960 [37.8]
45 [1.8]
17.7 [0.7]
30 [1.2]
1001 [39.4 ] ± 2.5
460 [18.1]
11 [0.43]
6.6 [0.26]
20.5 [0.81]
804 [31.65]
200 [7.9 ]
GR
710 [28.0]
22.55 [0.9]
1200 [47]
1200 [47]
GR
GR
GR
20.1%
20
25
GENERAL DATA
MECHANICAL DATA
MAXIMUM RATINGS
WARRANTY
CERTIFICATION
Dimensions: . " x ." x . " (x  x mm)
Area: .  . m
Weight: . lbs (. kg)
EFFICIENCY
YEAR PRODUCT WARRANTY
YEAR LINEAR POWER
OUTPUT WARRANTY
year product warranty
year linear power output warranty
Max. performance degression of . p.a. from  . in year 
See warranty conditions for further details.
TEMPERATURE RATINGS
All measurements in mm [in]
ELECTRICAL DATA  STC Product code*: RECxxxTPSM 
Power Output- PMAX (Wp)      
Wa Class Sorting- (W) /+ /+ /+ /+ /+ /+
Nominal Power Voltage - VMPP (V) . . . . . .
Nominal Power Current- IMPP (A) . . . . . .
Open Circuit Voltage- VOC (V) . . . . . .
Short Circuit Current- ISC (A) . . . . . .
Panel Efficiency () . . . . . .
Values at standard test conditions STC (airmass AM ., irradiance  W/m, cell temperature °F (°C).
At low irradiance of  W/m (AM . and cell temperature °F (°C at least  of the STC module efficiency will be achieved.
* xxx indicates the nominal power class (PMAX) at STC, and can be followed by the suffix XV for modules with a  V maximum system rating.
ELECTRICAL DATA  NMOT Product code*: RECxxxTPSM 
Power Output- PMAX (Wp)      
Nominal Power Voltage - VMPP (V) . . . . . .
Nominal Power Current- IMPP (A) . . . . . .
Open Circuit Voltage- VOC (V) . . . . . .
Short Circuit Current- ISC (A) . . . . . .
Nominal cell operating temperature NOCT ( W/m, AM ., windspeed  m/s, ambient temperature 68°F(°C).
* xxx indicates the nominal power class (PMAX) at STC, and can be followed by the suffix XV for modules with a  V maximum system rating.
Specifications subject to change without notice.
Cell type:  half-cut monocrystalline PERC cells
 strings of  cellsinseries
Glass: ." (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highlyresistantpolymericconstruction
Frame: Anodized aluminum
Support bars: Anodized aluminum
Junction box: -part,  bypass diodes, IP rated
in accordance with IEC 
Cable:  mm solar cable, . m + . m
in accordance with EN 
Connectors: Stäubli MC-Evo
PVKBTEVO/PVKSTEVO mm)
in accordance with IEC , IP only when connected
Tonglin TL-CableSF( mm)
in accordance with IEC , IP only when connected
Origin: Made in Singapore
Operational temperature:  ... +°F  ...+°C
Maximumsystem voltage: V/V
Design load (+):snow . lbs/ (Pa)+
Maximumtest load(+): . lbs/ (Pa)*
Design load (-):wind . lbs/(Pa)+
Maximumtest load(-): . lbs/ ( Pa)*
Maxseriesfuserating: A
Maxreversecurrent: A
+Calculated using a safety factor of .
*See installationmanual for mounting instructions
Nominal Module Operating Temperature: .°C(±°C)
Temperature coefficient of PMAX: . /°C
Temperature coefficient of VOC: . /°C
Temperature coefficient of ISC: . /°C
*The temperature coefficients stated are linear values


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
ANNEX : INSTALLATIONS ON WATER PLATFORMS
This section is applicable to the following products only (other module types have not yet been qualified for installations on water platforms):
• RECTwinPeak S Mono  Series & REC TwinPeak S Mono  XV Series
• RECTwinPeak S Mono  Series
The above named RECsolar panelsmay be installedon waterplatform-type mountingsystems (notethat the UL and UL certification testingof
solar panels does not include testing on these types of systems). When installing any of the above named REC solar panels on fixed position (e.g., anchored)
water platforms, for example, floating pontoons, follow the instructions below specific to such applications. Failure to do so will invalidate the warranty.
For all installations on water platforms, first advise REC before the start of installation in case of any site specific instructions or constraints.
INSTALLATION ENVIRONMENT
i) Installation site
• REC solar panels may only be installed on closed bodies of fresh water where water salinity does not exceed  ppt ( mS/cm) at °F (°C)
( PSU). This specifically excludes mounting on sea and ocean applications.
• The maximum permied wave height must not exceed .  (m) from the crest to the trough of the wave.
ii) Floating platforms
• When using a floating platform, follow the manufacturer’s instructions regarding installation, maintenance, inspection and cleaning at all times.
iii) Minimum installation height
• The minimum installation height of REC solar panels on floating platform systems is . in ( cm) and is defined as the height between the water
surface and the lowest edge/part of the panel during normal operation.This will help to shield the panel from direct water spray.
INSTALLATION INSTRUCTIONS
i) System installation
• All cables used for the installation must have sufficient length and slack to prevent damage due to water level changes and wave motions.
Negative system grounding is required for REC solar panels installed on a floating platform.
ii) Mounting panels
• Installation of REC solar panels must be in accordance with the aforementioned standard mounting instructions.
• Thejunctionboxshouldbeorientedasfaraspossiblefromthewatersurfaceaccordingtosystemdesignandthejunctionbox,cablesandconnectors
must be protected from direct water splash.
• The installation must allow for sufficient spacing between individual panels, in order to avoid all contact as caused by the natural movement and
flexing of the floating structure.
iii) Panel protection
• In areas with high avian activity, additional bird repelling devices may be installed as long as they do not adversely affect system performance, e.g.,
shading or to the local environment etc.
• If using lightning protection equipment on the floating installation, all relevant local regulations must be respected.
MAINTENANCE
• Regularly inspect the installation to ensure all panels are securely mounted.
For installations with high avian activity, system cleaning may be required at more frequent intervals to reduce shading of panels caused
by bird defecation.
SAFETY
• Immediately disconnect the system if the installation or the floating platform exhibits deviation from standard operating conditions.
• In the event of the floating platform being submerged, disconnect the DC connection at the inverter immediately. Do not aempt to salvage panels
when sunlight is present.

REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE

ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS
This section is applicable to all REC products referred to in this installation manual.
ModuleLevelPowerElectronics (MLPE) is the name givento the range of panel-levelcomponents that can beinstalled in PVsystem circuits installedon
or in buildings to reduce shock hazard for emergency responders. MLPE devices can be supplied pre-installed by panel manufacturers or as a ‘retro-fit’
system made by third-party manufacturers. From January , , Section . of the  National Electrical Code (NEC) (in the U.S.A.) requires
thepanel-levelrapidshutdownofsolar systems (replacingthepreviousarray-levelshutdownrequirement of NEC).Thismeans that allconductors
within an array’s . in ( mm) boundary have to be reduced to V or less within  seconds of rapid shutdown initiation.
MLPE devices may be used on REC solar panels where desirable or mandatory (note that the certification testing of solar panels does not include
testing with MLPE devices).When installing an MLPE device on an REC solar panel, follow the instructions provided by the device manufacturer and the
instructions specific for REC solar panels given below. Failure to follow the manufacturer and the REC instructions may invalidate the warranty.
INSTALLATION
i) Installation
• MLPEdevicesaresuitableforuse whereversolarpanels are suitable forinstallation.Observeany limitations set by the MLPE manufacturer.(e.g.,
minimum mounting gap between MLPE and rooop).
• When aaching an MLPE device to a solar panel, it must be secured to the panel frame. Follow MLPE manufacturer instructions to ensure
optimum mounting of MLPE device and prevent any slippage during operation.
• MLPE devices may also be aached to the mounting construction. In such cases, refer to the instructions provided by the manufacturer.
• Wherever possible, the installation of the MLPE device should not cover the product label on the rear of the panel.
• MLPE devices may only be installed on REC solar panels in the areas shown in the diagram below (fig. ):
Fig. : MLPE device installation zones
Installation of MLPE device in the green zone is permied.
Installation of MLPE device in the red zone is not permied.
To avoid damage to the panel and to allow for thermal expansion, there must be a minimum gap of . in (.mm) between the MLPE device
and the panel backsheet.
The mounting holes in the panel frame must not be used for the installation of MLPE devices.
The drilling of extra holes in the frame is not permied and will invalidate the panel warranty.
CONNECTION
• First ensure the installation of the MLPE device is secure and safe.
• Following the device manufacturer’s instructions to connect the cables from the MLPE device to the solar panel correctly (usually positive to
positive [+ to +] and negative to negative [- to -]).
• Connection to the next panel in the array should be done from the ‘free’ cables.
SAFETY
• Immediately disconnect the device if there is a problem during installation.
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1001 mm [0 - 39.4 in]
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1001 mm [0 - 39.4 in]
GR GR
GR


REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
DOCUMENTHISTORY
Date Revision Number Reason
. A First release of combined installation manual for all REC -cell solar panels
. B Update to UL  certification standards, revision to Connectors
. B. AdditionofAnnex:RSD,additionofRECTwinPeakMonoandRECTwinPeakS Monoproducts,
. B. Update to warranty conditions
. C Updated Datasheets
. D Updated Datasheets
. E Addition of minimum required torque for clamping, Short Side Mounting and REC TwinPeak S Mono
 Series
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1001 mm [0 - 39.4 in]
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1001 mm [0 - 39.4 in]
GR GR
GR

REC SOLAR PTE. LTD.
 TUAS SOUTH AVENUE 
SINGAPORE 
SINGAPORE
Tel: +  
Mail: [email protected]
www.recgroup.com
REC Installation Manual - -Cell products according to UL 
Rev E  . Ref: NE
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