REC TwinPeak 4 Series User manual

Installation instructions for all REC solar panels certified according to IEC  / :
• RECTwinPeak Series
• RECTwinPeak Black Series
• REC N-Peak Series
• REC N-Peak Black Series
• REC N-Peak Series
• REC N-Peak Black Series
REC SOLAR PANELS
INSTALLATION MANUAL

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
CONTENTS
LIST OF FIGURES
Fig. : Clamp specifications 
Fig. : Panel quarter divisions 
Fig. : Clamping of RECTwinPeak Series panels with rails parallel to
short side of the panel 
Fig. : Clamping of RECTwinPeak Series panels with rails parallel to
long side of the panel 
Fig. : Clamping of RECTwinPeak Series panels using short rails 
Fig. : Clamping of N-Peak panels parallel to short side of module 
Fig. : Clamping of N-Peak panels parallel to long side of module 
Fig. : Clamping of REC N-Peak Series panels using short rails 
Fig. : Clamping of REC N-Peak Series panels with rails parallel to
short side of the panel 
Fig. : Clamping of REC N-Peak Series panels with rails parallel to
long side of the panel 
Fig. : Clamping of REC N-Peak Series panels using short rails 
Fig. : Mounting holes: REC -cell panels 
Fig. : Mounting holes: REC -cell panels 
Fig. : Device specifications for mounting holes 
Fig. : Mounting hole installation example 
Fig. : Drainage and grounding holes 
Fig. : Connector mating matrix 
Fig. : Minimum cable bend radius 
Fig. : WEEE symbol 
Fig. : Panel dimensions: RECTwinPeakSeries 
Fig. : Panel dimensions: RECTwinPeak Black Series 
Fig. : Panel dimensions: REC N-Peak Series 
Fig. : Panel dimensions: REC N-Peak Black Series 
Fig. : Panel dimensions: REC N-Peak Series 
Fig. : Panel dimensions: REC N-Peak Black Series 
Fig. : REC -cell panels MLPE device installation zones 
Fig. : REC -cell panels MLPE device installation zones 
INTRODUCTION 
SAFETY MEASURES 
PANEL HANDLING 
CHOOSING AN INSTALLATION LOCATION 
ELECTRICAL INSTALLATION 
MECHANICAL INSTALLATION 
PANEL INSTALLATION 
Securing of Panels 
Installation of RECTwinPeak Series panels 
Mounting RECTwinPeak Series panels with continous rails parallel to short side of the panel 
Mounting RECTwinPeak Series panels with continous rails parallel to long side of the panel 
Mounting RECTwinPeak Series panels with short rails 
Installation of REC N-Peak panels 
Mounting REC N-Peak panels with continuous rails parallel to short side of the panel 
Mounting REC N-Peak panels with continuous rails parallel to long side of the panel 
Mounting REC N-Peak panels with short rails 
Installation of REC N-Peak Series panels 
Mounting REC N-Peak Series panels with continous rails parallel to short side of the panel 
Mounting REC N-Peak Series panels with continous rails parallel to long side of the panel 
Mounting REC N-Peak Series panels with short rails 
Mounting methods: Slide in systems 
Mounting methods: Mounting holes 
Drainage holes 
CONNECTIONS AND CONNECTORS 
CABLE MANAGEMENT 
PANEL MAINTENANCE 
RECYCLING 
DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT 
PANEL CHARACTERISTICS 
Technical Properties: RECTwinpeak Series 
Technical Properties: RECTwinPeak Black Series 
Technical Properties: REC N-Peak Series 
Technical Properties: REC N-Peak Black Series 
Technical Properties: REC N-Peak Series 
Technical Properties: REC N-Peak Black Series 
ANNEX : INSTALLATIONS ON WATER PLATFORMS 
ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS 
EC DECLARATION OF CONFORMITY 
DOCUMENT HISTORY 

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

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 decades of clean and renewable energy.
Please read this entire manual carefully. It contains critical information on safety, as well as detailed instructions for the installation, operation and
maintenance of the panels. Failure to follow these procedures will invalidate the warranty (www.recgroup.com/warranty). Review all instructions
and safety notes in this manual before working on the system. Failure to do so may lead to injury or damage to property.
HOW TO USE THIS MANUAL
This manual describes the procedures for the terrestrial installation of all REC solar panels certified according to IEC  & IEC 
standards. This includes all product variants (indicated by the appropriate suffix in the panel name) e.g., a white or black backsheet. The installed
panel is considered to be in compliance with IEC  & IEC  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 IEC  & IEC  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 IEC  & IEC .
Except where specifically stated, the information and drawings in this manual refer to all frame, backsheet, and cell types; the illustrations are
only a generic representation of the instructions regardless of color or exact design. Throughout the manual, you will see sections which highlight
important information or notes:
YOUR RESPONSIBILITY AS AN INSTALLER
Installers are responsible for the safe and effective installation and operation of the system and for adhering to all applicable local standards
and regulations. Prior to installation installers must check all current regulations and permits concerning solar installations and ensure all local
directives are observed. Furthermore, installers are responsible for the following:
• Only qualified personnel must perform work on photovoltaic systems such as installation, commissioning, maintenance and repairs
• Be sure to follow the safety instructions for all system components
• Ensuring the REC 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 tools and equipment should be properly maintained and inspected prior to use
As this manual may contain instructions for different product variants, ensure you follow the instructions for the correct product where specified.
SUPPORT
Do not aempt to install REC solar panels if you are unsure of the procedure or suitability. For further support, 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 grossly negligent breach of obligations on the part of REC SOLAR PTE. LTD. and/or in the event of an intentional or
grossly negligent breach 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 the Warranty Terms and Conditions. If you have any questions about installation and the
Warranty validity, please contact REC.
NOTE
Indicates important notes to help with the installation.
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CAUTION
Indicates potential for damage to the array or property.
DANGER
Indicates potential for damage to personal safety.

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
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 must be referred to and observed.
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 and
fall protection are followed. Before beginning work on an installation, ensure all working surfaces are structurally sound and capable of bearing the
weight of employees and required equipment.
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.
Specific hazards of DC electricity
The voltage produced by a single panel, and panels connected in series (voltages added together), or in parallel (currents added together) can be
dangerous. Although the fully insulated plug contacts on the panel’s output cables provide touch-safe protection, the following points must be
observed 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.
DANGER Electrical shock
Solar panels generate direct current (DC). Once current is flowing, breaking a connection (e.g., disconnecting two panels) can cause an electrical
arc.UnlikelowvoltageACwiring,DC arcsarenotself-extinguishing;theyarepotentiallylethal burnandfirehazards,capableof hightemperatures
that can destroy contacts and connectors:
• Isolate the system and remove/open the inverter AC fuse/circuit breaker from the grid before carrying out any maintenance or repair work.
• Follow inverter manufacturer’s installation, handling and operating instructions.
• High-voltage components need sufficient time to discharge. Wait for the time specified by the manufacturer before commencing work.
• 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.

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

PANEL HANDLING
In order to avoid damage, 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, carrying, installing 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 or walk on the panels,
• Avoid dropping the panels as any damage caused may be unseen,
• Keep all electrical contacts clean and dry,
• 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 front or rear of the panel,
• Do not use any solar panel that is damaged or has been tampered with,
• Never aempt to disassemble, modify, or adapt the panels or labels in any way as this will void the warranty.
Thepallet packaging isnot water-or weatherproof. Prior toinstallation,andtoavoiddamage ordegradation tothe packaging orpanelcomponents,
pallets and panels must be stored in a controlled environment, ideally internal, where it is protected from the elements, e.g., rain, dust, and direct
sunlight. If overnight storage in an uncontrolled environment is unavoidable, the panels and the pallet packaging must be protected from direct
exposure to the elements and from contact with the ground, including earth, mud etc.
CHOOSING AN INSTALLATION LOCATION
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 +°C.
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 containers or spray paint facilities,
• Near open flames,
• Where the panelsare exposed to direct contact with salt water/spray,
• Under water or in water features,
• Where exposed to sulfur e.g., near sulfur springs or volcanoes,
• Where exposed to artificially concentrated sunlight,
• Where the panels may be exposed to harmful chemicals.
NOTE
Use clean and protective gloves when handling the panel as this will avoid the transfer of any fingerprints or soiling to the highly-sensitive and
anti-reflective glass surface, ensuring improved light transmission and avoiding any contamination.
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NOTE
For further information regarding installations on water platforms, e.g., floating pontoons, see Annex at the rear of this manual.
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REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
ELECTRICAL INSTALLATION
ELECTRICAL REQUIREMENTS
Application Class
REC solar panels are rated for use in electrical Application Class A, Protection Safety Class II; at hazardous levels of voltage (>V), current(>A)
and power (>W) where general contact access is anticipated (panels qualified for safety through IEC -and -).
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.
String configuration
Whenconnectingpanelsinastring,planandexecuteaccordingtotheinvertermanufacturer’sinstructions.Thenumberofpanelsconnectedtoaninverter
mustnotexceedthevoltagelimitsandoperatingrangepermiedbythemanufacturer,norunderanycircumstanceexceedthemaximumsystemvoltage
as stated in the technical specifications for the product at the rear of this manual.The maximum system fuse rating (overcurrent protection 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
ambienttemperatureatsite,e.g.:foraVsystem,ifthelowestambienttemperatureis°C,thepanelhasaVOC of.Vandatemperaturecoefficient
of VOC of -./°C, the maximum panels per string is  (∆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.
String connection
Panels connected in series must have the same ampere rating.The maximum number of panels that can be connected in series or parallel depends upon
system design,invertertype andenvironmental conditions.String configurationmustcorrespondtothespecifications of other systemcomponentse.g.,
inverter. Refer to the reverse current rating of the panel indicated in the technical characteristics at the rear of this manual or on the panel datasheet.
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.
Electrical Ratings
Electricalratingsarewithina specifictolerance ofmeasuredvaluesatStandardTestConditions(STC)asgiveninthetechnicalcharacteristicsfor 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 by a
factor of . (or according to local regulations) when determining component voltage ratings, conductor ampacities, overcurrent device ratings and
size of controls connected to the PV output.
MECHANICAL INSTALLATION
FIRE GUIDELINES
The REC solar panels covered by this manual have a Class C (referencing UL ) fire classification. The REC solar panels in -cell format are
rated Type fire classification according to IEC -: (ref. ANSI/UL ); The REC solar panels in -cell format are rated Type 
fire classification according to IEC -: (ref. ANSI/UL ). Utilize the following fire safety guidelines when installing REC solar
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,
• All electrical appliances are a fire risk.The panel must be mounted over a fire retardant roof covering rated for the application and a distance
of at least  mm ( mm for REC solar panels in -cell format) between the panel and the mounting surface, to allow the free circulation
of air beneath the panels at all times.
ORIENTATION
Theoptimal mounting position ofapanel results in thesun’sraysfallingperpendicular(i.e.,at °) tothesurface.To maximizesystemoutput, 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.
DANGER Electrical shock
Safetyisparamountwhenworkingontheelectricalinstallation.Alwaysfollowthe electricalrequirementstoavoidtheriskof sparking, firehazards,
burns and lethal electric shocks.
NOTE
The IP rating of the junction box provides a level of protection that allows panels to be mounted in any orientation.
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REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

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. There are different options for securing REC solar panels depending on the design of the array. Mounting
hardware is not supplied by REC. Ensure the mounting structure can withstand anticipated wind and snow loads. Follow the mounting hardware
manufacturer’s instructions and recommendations at all times.
SECURING OF PANELS
A typical installation of solar panels will be carried out with suitable rails and clamps. Other types of panel support, e.g., plates, must meet the same
specifications. Such installations have been found to be in compliance with IEC  & IEC  requirements for the maximum stated test
loads which can be found for each individual panel type in the Panel Characteristics section at the end of this manual. Site-specific factors such as
high wind or snow levels must be taken into consideration to ensure this limit is not exceeded.
When installing on mounting rails, ensure they run underneath the panel and provide support to the frame. The positioning of the rail must ensure
that the minimum clamp grip length (fig. ) and the central point of the fixation, e.g., the bolt, is fully within the required clamping zone as indicated
on the following pages.
REC modules must be secured with a torque as shown in the table below (fig. ). Clamp installation must be carried out according to the
manufacturer’s instructions, including specific hardware and torque requirements. Ensure the clamps used are suitable for the planned installation
and expected system design loads.
• The grip area must not extend onto the panel glass and/or cause cell shading,
• Avoid the application of excessive pressure to prevent frame deformation,
• The panel must be secured, e.g., clamped, at least once in each of the four marked zones shown below (fig. ).
Fig. : Clamp specifications Fig. : Panel quarter divisions
12
43
Min. grip length
Grip depth
NOTE
• 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,
potentially causing damage to the panel. If the installation may be affected by this, further panel support is recommended, especially 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.
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Specifications Length
Grip depth mm -  mm
Min. grip length  mm
Torque  -  Nm
NOTE
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. Remove any labels or stickers that may be on the front of the panels and ensure
no residue is leon the glass.
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CAUTION
There must be a minimum clearance gap between the uppermost part of the installation surface (e.g., rooop) and the lowest part of the panel
(i.e., underside of panel frame) to avoid any damage to the panel and to ensure sufficient airflow for cooling, helping to improve performance.
Minimum clearance gap -cell format REC solar panels:  mm
Minimum clearance gap -cell format REC solar panels:  mm
The surface below the panels must be kept clear of any objects that may cause damage to the panel.

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
CAUTION
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.
Rail positioning
Rail positioning
Fig. : Clamping of RECTwinPeak Series panels with rails parallel to short side of the panel
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting
Short Side
Mounting
Rail position
Rail position
INSTALLATION OF REC TWINPEAK SERIES PANELS
MOUNTING REC TWINPEAK SERIES PANELS WITH CONTINOUS RAILS PARALLEL TO SHORT SIDE OF THE PANEL
A continous rail (or other support structure) spans the complete underside of the panel.
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

CAUTION
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.
Rail positioning
Rail positioning
Fig. : Clamping of RECTwinPeak Series panels with rails parallel to long side of the panel
Rail position
Rail position
MOUNTING REC TWINPEAK SERIES PANELS WITH CONTINOUS RAILS PARALLEL TO LONG SIDE OF THE PANEL
A continous rail (or other support structure) spans the complete underside of the panel.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Short Side
Mounting
Long Side Mounting
250 mm [9.8 in]
100 mm [3.9 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
650 mm [25.6 in]
250 mm [9.8 in]
100 mm [3.9 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
650 mm [25.6 in]

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
CAUTION
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.
Fig. : Clamping of RECTwinPeak Series panels using short rails
MOUNTING REC TWINPEAK SERIES PANELS WITH SHORT RAILS
A short rail (or other short support structure) has a minimum length of  mm and does not span the complete underside of a panel.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
Rail length under
module
 -  mm
Min.
2
5 m
m
Max
.
100 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Rail length under
module
 -  mm
Min.
1
00
mm
Max
.
200 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting Long Side Mounting
Short Side
Mounting
Short Side
Mounting
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

CAUTION
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.
INSTALLATION OF REC NPEAK PANELS
MOUNTING REC NPEAK PANELS WITH CONTINUOUS RAILS PARALLEL TO SHORT SIDE OF THE PANEL
A continuous rail (or other support structure) spans the complete underside of the panel.
Fig. : Clamping of N-Peak panels on rails parallel to short side of module
Rail positioning
Rail positioning
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting
Short Side
Mounting
Rail position
Rail position
250 mm [9.8 in] 250 mm [9.8 in]
100 mm [4 in] 100 mm [4 in]
250 mm [9.8 in]250 mm [9.8 in]
100 mm [4 in]100 mm [4 in]
340 mm [13.4 in]
520 mm [20.5 in]
650 mm [25.6 in]
420 mm [16.5 in]
0
0
0
0
0
208 mm [8.2 in]
340 mm [13.4 in]
520 mm [20.5 in]
650 mm [25.6 in]
420 mm [16.5 in]
0
208 mm [8.2 in]

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
CAUTION
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.
Fig. : Clamping of N-Peak panels on rails parallel to long side of module
MOUNTING REC NPEAK PANELS WITH CONTINUOUS RAILS PARALLEL TO LONG SIDE OF THE PANEL
A continuous rail (or other support structure) spans the complete underside of the panel.
250 mm [9.8 in] 250 mm [9.8 in]
100 mm [4 in] 100 mm [4 in]
250 mm [9.8 in]250 mm [9.8 in]
100 mm [4 in]100 mm [4 in]
650 mm [25.6 in]
0
00
0
0
0
650 mm [25.6 in]
Rail positioning
Rail positioning
Rail position
Rail position
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Short Side
Mounting
Long Side Mounting
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
Rail length under
module
 -  mm
Min.
2
5 m
m
Max
.
100 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+Pa /  Pa
(+Pa/ Pa)
+Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Rail length under
module
 -  mm
Min.
1
00
mm
Max
.
200 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

Fig. : Clamping of REC N-Peak Series panels using short rails
MOUNTING REC NPEAK PANELS WITH SHORT RAILS
A short rail (or other short support structure) has a minimum length of  mm and does not span the complete underside of a panel.
CAUTION
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
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
Rail length under
module
 -  mm
Min.
2
5 m
m
Max
.
100 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+Pa /  Pa
(+Pa/ Pa)
+Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Rail length under
module
 -  mm
Min.
1
00
mm
Max
.
200 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting Long Side Mounting
Short Side
Mounting
Short Side
Mounting
250 mm [9.8 in] 250 mm [9.8 in]
100 mm [4 in] 100 mm [4 in]
250 mm [9.8 in]250 mm [9.8 in]
100 mm [4 in]100 mm [4 in]
340 mm [13.4 in]
520 mm [20.5 in]
650 mm [25.6 in]
420 mm [16.5 in]
0
0
0
0
0
208 mm [8.2 in]
340 mm [13.4 in]
520 mm [20.5 in]
650 mm [25.6 in]
420 mm [16.5 in]
0
208 mm [8.2 in]

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
CAUTION
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.
Rail positioning
Rail positioning
Fig. : Clamping of REC N-Peak Series panels with rails parallel to short side of the panel
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting
Short Side
Mounting
Rail position
Rail position
INSTALLATION OF REC NPEAK SERIES PANELS
MOUNTING REC NPEAK SERIES PANELS WITH CONTINOUS RAILS PARALLEL TO SHORT SIDE OF THE PANEL
A continous rail (or other support structure) spans the complete underside of the panel.

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

250 mm [9.8 in]
100 mm [3.9 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
650 mm [25.6 in]
250 mm [9.8 in]
100 mm [3.9 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
650 mm [25.6 in]
CAUTION
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.
Rail positioning
Rail positioning
Fig. :Clamping of REC N-Peak Series panels with rails parallel to long side of the panel
Rail position
Rail position
MOUNTING REC NPEAK SERIES PANELS WITH CONTINOUS RAILS PARALLEL TO LONG SIDE OF THE PANEL
A continous rail (or other support structure) spans the complete underside of the panel.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
 mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa /Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Short Side
Mounting
Long Side Mounting

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
250 mm [9.8 in]
100 mm [3.9 in]
357 mm [14.1 in]
582 mm [22.9 in]
622 mm [24.5 in]
712 mm [28.0 in]
0
0
250 mm [9.8 in]
100 mm [3.9 in]
0
225 mm [8.9 in]
CAUTION
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.
Fig. :Clamping of REC N-Peak Series panels using short rails
MOUNTING REC NPEAK SERIES PANELS WITH SHORT RAILS
A short rail (or other short support structure) has a minimum length of  mm and does not span the complete underside of a panel.
Legend
Clearance Gap
Clamping zone
 mm  mm > mm < mm
Test Load
(Design Load) Test Load (Design Load) Test Load (Design Load) Test Load (Design Load)
Rail length under
module
 -  mm
Min.
2
5 m
m
Max
.
100 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa /Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Rail length under
module
 -  mm
Min.
1
00
mm
Max
.
200 mm
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/ Pa) X
  mm + Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
  mm + Pa /  Pa *
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/Pa) X
 mm X+ Pa /  Pa *
(+Pa/ Pa)
+ Pa /  Pa *
(+Pa / Pa) X
  mm X+ Pa /  Pa *
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/Pa) X
Once a module is secured in each of the zones (fig. ), 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 / testing; these have been evaluated by
REC’s internal testing process.
Long Side Mounting Long Side Mounting
Short Side
Mounting
Short Side
Mounting

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

MOUNTING METHODS: SLIDE IN SYSTEMS
When installing using slide in systems the mounting system must meet the same specifications including grip lengths, depths and spacing as
specified for clamping and the mounting system must be able to withstand the correct load pressures.
When installing solar panels using a slide-in system, the drainage holes found in the underside of the panel frame (see fig. ) must not be covered.
For any questions regarding installation on such systems, please contact REC directly.
MOUNTING METHODS: MOUNTING HOLES
The REC solar panels covered by this manual can be installed utilizing the four mounting holes ( x .mm) on the underside of the panel (fig.
 & ) in conjunction with a device, e.g., screws, lockbolts or structural blind fasteners, with specifications suitable for the installation (fig. ).
Installing REC solar panels using the mounting holes has been found to comply with IEC  & IEC  requirements for downward
pressure,e.g., snow, of up to  Pa ( Pa design load*) and upward pressure,e.g., wind, of up to  Pa ( Pa design load*) according to
the following instructions (*design loads apply a safety factor of .to the stated test load, e.g., test load  Pa / .=  Pa design load).
Part Name Material
Rail  -Taluminum extrusion
Bolt Mx  drop in T-stud kit
Nut Mflanged hex locking nut
Fig. :Mounting holes: REC -cell panels Fig. :Mounting holes: REC -cell panels Fig. :Device specifications for mounting holes
Fig. :Mounting hole installation example
CAUTION
The product warranty will be voided if additional holes are made in the frame. All fixing and fastening materials must be corrosion resistant.
GR
GR
GR
GR
382.5 [15]
Scale: 1:1.57
11±0.2
[0.43 ±0.01]
6.6±0.2 [0.26 ±0.01]
20.5±0.5
[0.8 ±0.02]
When installing using mounting holes, the frame and panel edge of each panel must be supported by two rails of aluminium or galvanized steel
suitable for the application and appropriate for the local environment. Observe the following procedures when using mounting holes:
• The mounting construction must be of a corrosion resistant material, e.g., aluminum or galvanized steel, and appropriate for the local
environment,
• All four mounting holes in the frame must be used (fig. ),
• Additional electrical bonding to Ground is required for the support structure,
• REC modules must be secured with a torque between  -  Nm. Refer to the fixing device manufacturer’s installation instructions for
preload or torque values.
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

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
DRAINAGE HOLES
On the long and short sides of the REC frame small drainage holes can be found that allow humidity and water to exit the frame easily and minimize
damage (fig. ).These are spaced  mm from the corner on -cell format panels and  mm on -cell format panels. These holes must not be
used for mounting the panel, and they must not be covered by any part of the mounting structure. To enable effective drainage and ensure there is
no damage to the panel, 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 depending on product and/or frame design.
GROUNDING
Local regulations may require grounding of the panels. Grounding must be done using an electrical connection from the panel frame. REC solar
panels have a small round grounding hole positioned near each corner of the panel on both the long side and the short side, as shown in fig.  and
can be further identified by the grounding symbol stamped in the frame next to it. Check all applicable requirements before beginning installation:
• Suitable grounding clips, lugs or other constructions must be used,
• Aach grounds to the grounding holes in the panel frames,
• Follow the grounding device manufacturer’s installation instructions to ensure a safe and conductive connection, including any
supplementary hardware, e.g., star washer, and tighten according to recommended torque,
• Wherecommongroundinghardware(nuts,bolts,starwashers,split-ringlockwashers,flatwashersandthelike)areusedtoaachagrounding
device, the aachment must be made in conformance with the grounding device manufacturer’s instructions.
Fig. :Drainage and grounding holes
25.6- 0 [650 - 0 mm]
GR
GR
GR
GR
0-25.6 in [0 - 650 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
25.6- 0 [650 - 0 mm]0-25.6 in [0 - 650 mm]
NOTE
• To avoid galvanic corrosion, galvanized or hot dipped zinc plated fasteners are preferred, however stainless steel fastening materials are
equally suitable.
• The support bars across the rear of REC panels are connected to the frame via specially designed grounding clips and do not need to be
individually grounded.
• Negative grounding of the panels is not required by REC.
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Grounding holes
Drainage holes

REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20

CONNECTIONS AND CONNECTORS
The connectortype(s) usedonREC panelsareindicatedintheproductspecifications at the rearofthismanual.The connector IP ratingisonlyvalidwhen
correctlyconnected.Allconnectorsandcablesmustbesecureandtightaswellaselectricallyandmechanicallysound.UV-resistantcablesandconnectors
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 mm2copper wires insulated for a maximum operating temperature of °C,
• Avoid exposing cables to direct sunlight and permanent tension.
In order to ensure a safe connection between panels and BOS equipment, the following instructions must be followed to protect the connections
from the elements.
CONNECTORS
To ensure connector compatibility and reduce the potential for damage to the panels and the wider installation, the connectors used on REC panels are
detailed in the Panel Characteristics at the rear of this manual. REC only permits the mating of factory-installed connectors to connectors of the same
manufacturer, type, and system rating as shown in the table below (fig. ):
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 
CUTTING THE CABLES
The cuingofcables isonlypermiedinordertoreplace afactory-installedconnectorwithanotherbrandofconnectortoensure ‘like-for-like’mating
whenconnectedtoa non-RECexternaldevice.Allotherchangesareprohibitedand willinvalidatethe RECwarranty.
• Theconnector replacement proceduremust be carriedoutcorrectlyandaccordingtothereplacementconnector manufacturer’sinstructions.
• Theselectedreplacementconnectormustalsofulfilallrelevanttechnicalspecificationsandbecertifiedaccordingtoapplicablestandards(e.g.,IEC
 or UL )toensure they arefitfor purposeandsafety.
• Use of any chemicals or lubricants on the connectors or contacts may only be carried out in line with the connector manufacturer’s instructions.
TheREC warrantydoes not extendto coverany fault traceableto thereplacedconnectors. Any othermodificationtothepanelisprohibited,includingthe
opening of the junction box, unless explicitly authorized by REC. Doing so will invalidate the warranty.
CABLE MANAGEMENT
To ensure a long life span of the cables and reduce the potential for damage to the cables, follow the instructions below:
• 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 and ensure cables
are free from any external load,
• The cables must have a minimum bending radius of  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 mechanical abrasion or grazing animals,
• Protect 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 using UV-resistant cables,
• 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,
• Secure the cable either side of the connectors to ensure 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.
More detailed 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)
NOTE
Somecountriesand/or regionshavespecific regulationsregardingthematingof connectors.Installers areresponsibleforensuringthecompliancyof the
system with such local regulations.
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DANGER Electrical shock
Safety is paramount when working with electrical connectors.
• Ensure that any installation work is not carried out on live or load-carrying parts.
• Connectionsmustnotbedisconnected under load and the system must be isolated from the gridbeforecarrying out any maintenance or repairwork.
< 60 mm >
< 30 mm >
Fig. : Minimum cable bend radius

 REC Installation Manual - REC Solar Panels - IEC 61215 /61730
Rev L -09.21 Ref: PM-IM-20
PANEL MAINTENANCE
CLEANING INSTRUCTIONS
REC solar panels have been designed for easy maintenance. However cleaning solar panels can assist in optimizing electricity output.The need for
cleaning will vary dependent on location, rainfall, 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 ensure water runs offthe surface. To optimize
electrical output it is recommended to clean the panels when dirt can clearly be seen on the glass surface.
Using a sorubber squeegee, wipe the panel surface from the top downwards to remove any residual water from the panel glass. Take care not to
scratch the surface or introduce foreign elements that may cause damage to the panel. Always rinse the panel with plenty of water. Panels can be
leto dry in the air or wiped dry with a clean and socloth or chamois.
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
wrappingand panelseparatingblocksarealsorecyclablein manyareas.Recyclepackagingand panels according to localguidelinesandregulations.
DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT
Panels 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, you will help prevent potential negative impact on the environment and human health. The majority of the panel components can be
recycled.
For installations in the European Union, REC solar panels are subject to WEEE regulations. The symbol in fig.  as found on the label on the rear
of the panel indicates that this product must not be treated as household waste and must be disposed of at an appropriate collection point for the
recycling of electrical and electronic equipment.The recycling of the different components and materials will help to conserve natural resources.
Fig. :WEEE symbol
The European WEEE (Waste Electrical and Electronic Equipment) Directive regulates the correct recycling of electronic and electrical waste in all
member statesof theEuropean Union(EU). For end-customersit isa freeof chargedisposal system,financed by themanufacturers andimporters,
where panels can be brought to a local recycling depot, or in the case of larger numbers, be picked up from site, as is the case with other electrical
equipment, e.g., refrigerators or televisions.The extensive process steps for proper disposal are strictly regulated and place no further obligations
on the owner of the panels. For more information about the recycling of this product, please contact your local recycling authority or recycling
center.
CAUTION
• Panel cleaning must always be carried out when the panels are cool, e.g., early morning, to avoid breakage through thermal shock.
• Use of high pressure hoses or cleaners is not permied as these may damage the panels, laminate or cells.
NOTE
• Avoid puing pressure on the on the panel surface when cleaning or drying, e.g., leaning, standing or resting buckets on it.
• 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.
• If stains require more effort to be removed, Isopropyl alcohol of a concentration less than  may be used. Acidic or alkaline detergent may
not be used.
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