REC ALPHA Series User manual

rec Alphαpanels
Installation Manual
FOR ALL REC ALPHA SOLAR PANELS CERTIFIED
ACCORDINGTO IEC  & UL  STANDARDS

REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
CONTENTS
LIST OF FIGURES
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 
CHOOSING AN INSTALLATION LOCATION 
ELECTRICAL INSTALLATION 
Electrical requirements 
MECHANICAL INSTALLATION 
Fire guidelines 
Orientation 
PANEL INSTALLATION 
Securing of panels 
Installation of REC Alpha Series panels 
Mounting REC Alpha Series panels with continous rails parallel to short side of the panel 
Mounting REC Alpha Series panels with continous rails parallel to long side of the panel 
Mounting REC Alpha Series panels with short rails 
Installation of REC Alpha  Series panels 
Mounting REC Alpha  Series panels with continous rails parallel to short side of the panel 
Mounting REC Alpha  Series panels with short rails parallel to short side of the panel 
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: REC Alpha Series 
Technical Properties: REC Alpha Black Series 
Technical Properties: REC Alpha  Series 
ANNEX : INSTALLATIONS ON WATER PLATFORMS 
ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS 
DOCUMENT HISTORY 
Fig. : Clamp specifications 
Fig. : Panel quarter divisions 
Fig. : Clamping of REC Alpha Series panels with rails parallel to short
side of the panel 
Fig. : Clamping of REC Alpha Series panels with rails parallel to long
side of the panel 
Fig. : Clamping of REC Alpha Series panels using a short support 
Fig. : Clamping of REC Alpha  Series panels with rails parallel to
short side of the panel 
Fig. : Clamping of REC Alpha  Series panels using short rails 
Fig. : Mounting holes: REC Alpha Series 
Fig. : Mounting holes: REC Alpha  Series 
Fig. : Device specifications for mounting holes 
Fig. : Mounting hole installation example 
Fig. : Drainage and grounding holes 
Fig. : Grounding lug dimensions and fastening torque 
Fig. : Connector mating matrix 
Fig. : Minimum cable bend radius 
Fig. : Panel dimensions: REC Alpha Series 
Fig. : Panel dimensions: REC Alpha Black Series 
Fig. : Panel dimensions: REC Alpha  Series 
Fig. : REC Alpha Series MLPE device installation zones 
Fig. : REC Alpha  Series MLPE device installation zones 

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REC Installation Manual - REC Alpha Panels - UL 6
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INTRODUCTION
Thank you for choosing REC photovoltaic panels for your installation. REC Alpha Series 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 Alpha solar panels certified according to IEC  & UL 
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  & 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 IEC  & 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 IEC  & UL .
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 theWarrantyTerms and Conditions. If you have any questions about installation and theWarranty 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 Alpha Panels - UL 6
Rev F  . Ref: PMIM
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.
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.Althoughthefullyinsulatedplugcontactsonthepanel’s output cables providetouch-safeprotection, the followingpoints 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.
Unlike low voltage AC wiring, DC arcs are not self-extinguishing; they are potentially lethal burn and fire hazards, capable of high temperatures 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.

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REC Installation Manual - REC Alpha Panels - UL 6
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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.
The pallet packaging is not water- or weatherproof. Prior to installation, and to avoid damage or degradation to the packaging or panel components,
palletsandpanelsmustbestoredin acontrolled environment,ideally internal,whereitisprotectedfromtheelements,e.g.,rain,dust,and directsunlight.
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 -° - °F (-° 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 Alpha Panels - UL 6
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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 UL - 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
When connecting panels in a string, plan and execute according to the inverter manufacturer’s instructions. The number of panels connected to an inverter
must not exceed the voltage limits and operating range permied by the manufacturer, nor under any circumstance exceed the maximum system voltage
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 itsVOC accounting for the lowest ambient
temperature at site, e.g.: for a V system, if the lowest ambient temperature is °C, the panel has a VOC of . V and a temperature coefficient 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
If panels are connected in series, they must have the same ampere rating. If panels are connected in parallel, they must 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 the technical characteristics section to the rear of this manual or on the panel datasheet.
Wiring
Wiring installation shall be in accordance with the National Electric Code (NEC) (or CSA C., Safety Standard for Electrical Installations, Canadian
ElectricalCode,Part  where applicable).To minimize voltagesurges (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
Electrical ratings are within a specific tolerance of measured values at Standard Test Conditions (STC) as given in the technical characteristics for each
panel at the rear of this manual. Under normal conditions, a photovoltaic panel is likely to experience conditions that produce more current and/or voltage
than reported at STC. The requirements of the NEC in Article  must be followed to address these increased outputs. In installations not under the
requirements of the NEC, the values of ISC and VOC marked on the panels must be multiplied 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 PVoutput.
MECHANICAL INSTALLATION
FIRE GUIDELINES
The REC solar panels covered by this manual have a Class C (referencing UL ) fire classification. The REC Alpha Series is rated Type  fire
classification according to IEC -: (ref. ANSI/UL ); The REC Alpha  XVSeries is rated Type  fire classification according to IEC
-: (ref. ANSI/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,
• 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 . in  mm(. in /  mm for REC Alpha  Series) between the panel and the mounting surface, to allow the free circulation of air
beneath the panels at all times.
ORIENTATION
The optimal mounting position of a panel results in the sun’s rays falling perpendicular (i.e., at °) to the surface. To maximize system output, panels
shouldbeinstalledattheoptimumorientationandtiltangle.Thespecificsofthisdependonlocationandcanbecalculatedbyaqualifiedsystemdesigner.
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
Safety is paramount when working on the electrical installation. Always follow the electrical requirements to avoid the risk of sparking, fire hazards,
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 Alpha Panels - UL 6
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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
solarpanels in overheador verticalconstructions, the installer must ensure that all local building codesand 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 havebeen found to be in compliance with IEC  & IEC  requirements forthe below stated maximumtest loads:
REC Alpha Series panels: + Pa downwards pressure and - Pa upwards pressure (+ Pa/- Pa design loads).
REC Alpha  Series panels: + Pa downwards pressure and - Pa upwards pressure (+ Pa/- Pa design loads).
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. ).
Min. grip length
Grip depth
NOTE
• Inareas of snowbuild-up, panels canbesubjected toforcesinexcess ofthestated limit evenwhensnowdepthdoesnot appear extreme,potentially
causingdamagetothe panel.If theinstallation maybe affectedbythis,further panelsupport isrecommended, especiallyonthelowerrowofpanels.
• 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 . - . in ( -  mm)
Min. grip length . in ( mm)
Torque  -  Nm
(- lbf/in)
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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NOTE
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 panel and evaluated through the requirements in IEC  & UL , may be used
for grounding connections in accordance with the instructions provided with the panel.
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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 REC Alpha Series: . in ( mm)
Minimum clearance gap REC Alpha  Series: . in ( mm)
The surface below the panels must be kept clear of any objects that may cause damage to the panel.
Fig. : Clamp specifications
12
43
Fig. : Panel quarter divisions

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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 Alpha Series panels with rails parallel to short side of the panel
13.4 in [340 mm]
27.4 in [695 mm]
22.2 in [565 mm]
9.8 in [250 mm] 9.8 in [250 mm]
4 in [100 mm] 4 in [100 mm]
9.8 in [250 mm]9.8 in [250 mm]
4 in [100 mm]4 in [100 mm]
13.4 in [340 mm]
23.8 in [605 mm]
27.4 in [695 mm]
22.2 in [565 mm]
0
8.2 in [208 mm]
0
23.8 in [605 mm]
0
0
0 0
8.2 in [208 mm]
INSTALLATION OF REC ALPHA SERIES PANELS
MOUNTING REC ALPHA 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.
Legend
Clearance Gap
Clamping zone
.  . in  mm) .  . in  mm) >. in (> mm) <. in (< mm)
Test Load
(DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad)
  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/ Pa) X
   in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
 - . in
   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 / UL  testing; these have been evaluated by REC’s
internal testing process.
Rail positioning
Rail positioning
Legend
Clearance Gap
Clamping zone
.  . in  mm) .  . in  mm) >. in (> mm) <. in (< mm)
Test Load
(DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad)
  . in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+ Pa/ Pa)
+ Pa /  Pa
(+Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa) X
. - . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/ Pa) X
. - . in
   mm)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
   in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
 - . in
   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 / UL  testing; these have been evaluated by REC’s
internal testing process.
Long Side Mounting
Short Side
Mounting
Rail position
Rail position


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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 Alpha Series panels with rails parallel to long side of the panel
9.8 in [250 mm] 9.8 in [250 mm]
4 in [100 mm] 4 in [100 mm]
9.8 in [250 mm]9.8 in [250 mm]
4 in [100 mm]4 in [100 mm]
25.6 in [650 mm]
0
0
25.6 in [650 mm]
0
0
0 0
MOUNTING REC ALPHA 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.
Rail positioning
Rail positioning
Rail position
Rail position
Legend
Clearance Gap
Clamping zone
.  . in  mm) .  . in  mm) >. in (> mm) <. in (< mm)
Test Load
(DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad)
  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/  Pa)
+ Pa /  Pa
(+Pa/ Pa) X
   in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
 - . in
   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 / UL  testing; these have been evaluated by REC’s
internal testing process.
Short Side
Mounting
Long Side Mounting

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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 Alpha Series panels using a short support
13.4 in [340 mm]
27.4 in [695 mm]
22.2 in [565 mm]
9.8 in [250 mm] 9.8 in [250 mm]
4 in [100 mm] 4 in [100 mm]
9.8 in [250 mm]9.8 in [250 mm]
4 in [100 mm]4 in [100 mm]
13.4 in [340 mm]
23.8 in [605 mm]
27.4 in [695 mm]
22.2 in [565 mm]
0
8.2 in [208 mm]
0
23.8 in [605 mm]
0
0
0 0
8.2 in [208 mm]
MOUNTING REC ALPHA 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
.  . in  mm) .  . in  mm) >. in (> mm) <. in (< mm)
Test Load
(DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad) Test Load (DesignLoad)
Rail length under
module
 - . in
( -  mm)
Min.
2
5 m
m
Max
.
100 mm
  . in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+Pa/ Pa)
+ Pa /  Pa
(+Pa /  Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa/ Pa) X
. - . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/  Pa) X
. - . in
   mm)
+ Pa /  Pa *
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
   in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
 - . in
   mm) X+ Pa /  Pa *
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
Rail length under
module
. - . in
( -  mm)
Min.
1
00
mm
Max
.
200 mm
  . in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/  Pa)
+ Pa /  Pa
(+ Pa/  Pa) X
.  . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+Pa/  Pa)
+ Pa /  Pa
(+Pa/  Pa) X
. - . in
   mm)
+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/  Pa) X
. - . in
   mm)
+ Pa /  Pa *
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa)
+ Pa /  Pa
(+ Pa/ Pa) X
   in
   mm) X+ Pa /  Pa *
(+Pa/Pa)
+ Pa /  Pa *
(+ Pa/ Pa) X
 - . in
   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  / UL  testing; these have been evaluated by REC’s
internal testing process.
Long Side MountingLong Side Mounting Short Side
Mounting
Short Side
Mounting
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)
  . in
   mm)
+ Pa /  Pa*
(+Pa/Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
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 / UL  testing; these have been evaluated by REC’s
internal testing process.


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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
Fig. : Clamping of REC Alpha  Series panels with rails parallel to short side of the panel
INSTALLATION OF REC ALPHA  SERIES PANELS
MOUNTING REC ALPHA  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.
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)
  . in
   mm)
+ Pa /  Pa*
(+Pa/Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
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 / UL  testing; these have been evaluated by REC’s
internal testing process.
Long Side Mounting
Rail position
Rail position
Rail positioning
Short Side
Mounting
13.8 in [350 mm]
7.9 in [200 mm]
25.8 in [655 mm]
30.7 in [780 mm]
0
13.8 in [350 mm]
7.9 in [200 mm]
9.8 in [250 mm]
25.8 in [655 mm]
30.7 in [780 mm]
0
0
9.8 in [250 mm]
0

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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 Alpha  Series panels using short rails
MOUNTING REC ALPHA  SERIES PANELS WITH SHORT RAILS PARALLEL TO SHORT SIDE OF THE PANEL
A short rail (or other short support structure) has a minimum length of  mm and does not span the complete underside of a panel.
7.9 in [200 mm]
0
7.9 in [200 mm]
9.8 in [250 mm]
0
0
9.8 in [250 mm]
0
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)
  . in
   mm)
+ Pa /  Pa*
(+Pa/Pa)
+ Pa /  Pa*
(+ Pa/ Pa)
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 / UL  testing; these have been evaluated by REC’s
internal testing process.
Short Side Mounting
Long Side
Mounting


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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 the REC Alpha & Alpha  Series solar panels using the mounting holes has been found to comply with IEC  & UL  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).
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:
• Themountingconstructionmustbeofacorrosionresistantmaterial,e.g.,aluminumorgalvanizedsteel,andappropriateforthelocalenvironment,
• 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 (- lbf/in). Refer to the fixing device manufacturer’s installation
instructions for preload or torque values.
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.
Part Name Specification Material
Rail  - T aluminum extrusion
Bolt /” x  - /” ASTM F (stainless steel)
Nut /” x  ASTM F (stainless steel)
Fig. : Mounting holes: REC Alpha Series Fig. : Mounting holes: REC Alpha  Series
GR GR
GR
Scale: 1:1.57
11 mm ±0.2
[0.43 in ±0.8]
6.6 mm ±0.2
[0.26 in ±0.08]
20.5 mm ±0.5
[0.78 in ±0.08]
455 mm [17.9 in]
GR GR
GR
Scale: 1:1.57
11 mm ±0.2
[0.43 in ±0.8]
6.6 mm ±0.2
[0.26 in ±0.08]
20.5 mm ±0.5
[0.78 in ±0.08]
502.5 mm [19.8 in]

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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
Apanel with exposedconductiveparts isconsideredto beincompliance with IEC& ULonly when itiselectrically groundedinaccordance
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. 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 clearly marked, small round Ø  mm 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 lugs must be used: Listed (KDER) ILSCO, GBL-DBT(tin plated) (E),
• Grounding cable size should be between    AWG (. mm - . mm),
• Aach grounds to the grounding holes in the panel frames,
• Fix lug to the frame using a star washer (#) and lock nut (#), ensuring a conductive connection,
• 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.
Fig. :Grounding lug dimensions and fastening torque
Cross section [AWG] Type Torque [in-lbs]
 -  Stranded 
 Stranded 
 -  Stranded/Solid 
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 Alpha Series 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.
i
Grounding holes
Drainage holes


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
CONNECTIONS AND CONNECTORS
The connector type(s) used on REC panels are indicated in the product specifications at the rear of this manual. The connector IP rating is only valid when
correctly connected. Allconnectors and cables must besecure and tight aswell as electrically andmechanically sound. UV-resistant cables andconnectors
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  mm2) copper wires insulated for a maximum operating temperature of °F (°C),
• Avoid exposing cables to direct sunlight and permanent tension.
InordertoensureasafeconnectionbetweenpanelsandBOSequipment,thefollowinginstructionsmustbefollowedtoprotecttheconnectionsfromtheelements.
CONNECTORS
To ensure connector compatibility and reduce the potential for damage to the panels and the wider installation, the connectors used on REC Alpha
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 1 +Connector 2 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ing of 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 connected 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 correctly and 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.,
EN , IEC  or UL ) to ensure they are fit for purpose and safety.
• Use of any chemicals or lubricants on the connectors or contacts may only be carried out in line with the connector manufacturer’s instructions.
The REC warranty does not extend to cover any fault traceable to the replaced connectors. 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.
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 . 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 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
Some countries and/or regions have specific regulations regarding the mating of connectors. Installers are responsible for ensuring the compliancy of the
system with such local regulations.
i
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.
• Connections must not be disconnected under load and the system must be isolated from the grid before carrying out any maintenance or repair work.
Fig. : Minimum cable bend radius 2.4 in (60 mm)
1.2 in (30 mm)

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
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 off the 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
wrapping and panel separating blocks are also recyclable in many areas. Recycle packaging and panels according to local guidelines and regulations.
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,youwillhelppreventpotentialnegativeconsequencesfortheenvironmentandhumanhealthwhichcouldotherwisebecausedbyinappropriate
waste treatment.The majority of the panel components can be recycled.
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.
i
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.
www.recgroup.com
Ref: PM-DSRev- F .
28 [1.1]
1721±2.5 [67.8±0.1]
811 [31.9] 455 [17.9]
975±2.5 [38.4±0.1]
1016±2.5 [40 ±0.1]
17 [0.7]
45 [1.8]
1000 [39.4]
1200 [47.2]
30 [1.2]
22.5 [0.9] 621 ±3 [24.5 ±0.12]
GR
GR
GR
GR
GR
11±0.2
[0.43±0.01]
6.6±0.2 [0.26±0.01]
20.5±0.5
[0.8±0.02]
6.0±0.2
[0.24±0.01]
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Measurements in mm [in]
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL , UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :,ISO :, OHSAS :, IEC
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class. Nominal module operating temperature (NMOT: air mass AM ., irradiance
 W/m, temperature °F (°C), windspeed . /s (m/s). * Where xxx indicates the nominal power class (PMAX) at STC above.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction
Frame: Anodized aluminum (black)
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors: StäubliMCPVKBT/KST, AWG(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in(+.m)
accordancewithEN 
Dimensions:  .  x x . in (x  x mm)
Weight: lbs (. kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage: V
Maximum test load (front): + Pa ( lbs/sq )*
Maximum test load (rear): - Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA SERIEs >Product SPECIFICATIONS


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
PANEL CHARACTERISTICS
TECHNICAL PROPERTIES: REC ALPHA SERIES
Fig. :Panel dimensions: REC Alpha Series
www.recgroup.com
Ref: PM-DSRev- F .
28 [1.1]
1721±2.5 [67.8±0.1]
811 [31.9] 455 [17.9]
975±2.5 [38.4±0.1]
1016±2.5 [40 ±0.1]
17 [0.7]
45 [1.8]
1000 [39.4]
1200 [47.2]
30 [1.2]
22.5 [0.9] 621 ±3 [24.5 ±0.12]
GR
GR
GR
GR
GR
11±0.2
[0.43±0.01]
6.6±0.2 [0.26±0.01]
20.5±0.5
[0.8±0.02]
6.0±0.2
[0.24±0.01]
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Measurements in mm [in]
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL , UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :,ISO :, OHSAS :, IEC
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class. Nominal module operating temperature (NMOT: air mass AM ., irradiance
 W/m, temperature °F (°C), windspeed . /s (m/s). * Where xxx indicates the nominal power class (PMAX) at STC above.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction
Frame: Anodized aluminum (black)
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors: StäubliMCPVKBT/KST, AWG(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in(+.m)
accordancewithEN 
Dimensions:  .  x x . in (x  x mm)
Weight: lbs (. kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage: V
Maximum test load (front): + Pa ( lbs/sq )*
Maximum test load (rear): - Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA SERIEs >Product SPECIFICATIONS

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
TECHNICAL PROPERTIES: REC ALPHA BLACK SERIES
Fig. :Panel dimensions: REC Alpha Black Series
6.0±0.2
[0.24±0.02]
2063± 2.5 [81.20±0.1]
1058 [41.7]
400 [15.75]
28 [1.1]
1026±2.5 [40.0±0.1]
985 [38.80]
45 [1.8]
17 [0.7]
502.5 [19.8]
11± 0.2
[0.43±0.01]
6.6± 0.2
[0.26±0.01] 20.5±0.5
[0.8±0.02]
761±3 [29.9±0.1]
30 [1.2]
GR
22.55 [0.9]
1300 [51]
1200 [47]
GR
GR
GR
GR
Ref: PM-DSRev- C .
www.recgroup.com
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Measurements in mm [in]
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :, ISO:, OHSAS :, IEC 
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA 72
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class.
Nominal module operating temperature (NMOT: air mass AM ., irradiance  W/m, temperature °F (°C), windspeed . /s (m/s).
*Where xxx indicates the nominal power class (PMAX) at STC above and is followed by the suffix XV for V rated modules.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction
Frame: Anodized aluminum
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors:
Stäubli MC Evo
PVKBTEVO/PVKSTEVO(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in (.+ . m)
in accordance withEN
Dimensions: .x . x . in (xx mm)
Weight: lbs (, kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage:  V
Maximum test load (front): +  Pa (. lbs/sq )*
Maximum test load (rear): -  Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA 72 SERIEs >Product SPECIFICATIONS
www.recgroup.com
Ref: PM-DSRev- F .
28 [1.1]
1721±2.5 [67.8±0.1]
811 [31.9] 455 [17.9]
975±2.5 [38.4±0.1]
1016±2.5 [40 ±0.1]
17 [0.7]
45 [1.8]
1000 [39.4]
1200 [47.2]
30 [1.2]
22.5 [0.9] 621 ±3 [24.5 ±0.12]
GR
GR
GR
GR
GR
11±0.2
[0.43±0.01]
6.6±0.2 [0.26±0.01]
20.5±0.5
[0.8±0.02]
6.0±0.2
[0.24±0.01]
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL , UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :,ISO :, OHSAS :, IEC
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA Black
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class. Nominal module operating temperature (NMOT: air mass AM ., irradiance
 W/m, temperature °F (°C), windspeed . /s (m/s). * Where xxx indicates the nominal power class (PMAX) at STC above.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction (black)
Frame: Anodized aluminum (black)
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors: StäubliMCPVKBT/KST, AWG(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in(+.m)in
accordancewithEN 
Dimensions:  .  x x . in (x  x mm)
Weight: lbs (. kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Measurements in mm [in]
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage: V
Maximum test load (front): + Pa ( lbs/sq )*
Maximum test load (rear): -  Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA Black SERIEs >Product SPECIFICATIONS
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.


REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
TECHNICAL PROPERTIES: REC ALPHA  SERIES
Fig. :Panel dimensions: REC Alpha  Series
6.0±0.2
[0.24±0.02]
2063± 2.5 [81.20±0.1]
1058 [41.7]
400 [15.75]
28 [1.1]
1026±2.5 [40.0±0.1]
985 [38.80]
45 [1.8]
17 [0.7]
502.5 [19.8]
11± 0.2
[0.43±0.01]
6.6± 0.2
[0.26±0.01] 20.5±0.5
[0.8±0.02]
761±3 [29.9±0.1]
30 [1.2]
GR
22.55 [0.9]
1300 [51]
1200 [47]
GR
GR
GR
GR
Ref: PM-DSRev- C .
www.recgroup.com
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Measurements in mm [in]
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :, ISO:, OHSAS :, IEC 
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA 72
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class.
Nominal module operating temperature (NMOT: air mass AM ., irradiance  W/m, temperature °F (°C), windspeed . /s (m/s).
*Where xxx indicates the nominal power class (PMAX) at STC above and is followed by the suffix XV for V rated modules.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction
Frame: Anodized aluminum
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors:
Stäubli MC Evo
PVKBTEVO/PVKSTEVO(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in (.+ . m)
in accordance withEN
Dimensions: .x . x . in (xx mm)
Weight: lbs (, kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage:  V
Maximum test load (front): +  Pa (. lbs/sq )*
Maximum test load (rear): -  Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA 72 SERIEs >Product SPECIFICATIONS
www.recgroup.com
Ref: PM-DSRev- F .
28 [1.1]
1721±2.5 [67.8±0.1]
811 [31.9] 455 [17.9]
975±2.5 [38.4±0.1]
1016±2.5 [40 ±0.1]
17 [0.7]
45 [1.8]
1000 [39.4]
1200 [47.2]
30 [1.2]
22.5 [0.9] 621 ±3 [24.5 ±0.12]
GR
GR
GR
GR
GR
11±0.2
[0.43±0.01]
6.6±0.2 [0.26±0.01]
20.5±0.5
[0.8±0.02]
6.0±0.2
[0.24±0.01]
Specifications subject to change without notice.
CERTIFICATIONS
WARRANTY
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
Irradiance (W/m²)
Typical low irradiance performance of module at STC:
Rel. Efficiency (%)
NominalModule OperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
IEC :, IEC :, UL , UL 
IEC  PID
IEC  Salt Mist
IEC  Ammonia Resistance
UL  Fire Type Class 
IEC  Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC  Cyclic Wind Load
ISO :,ISO :, OHSAS :, IEC
Standard REC ProTrust
Installedby anREC Certified
SolarProfessional No Yes Yes
System Size All ≤ kW  kW
Product Warranty (yrs)   
Power Warranty (yrs)   
Labor Warranty (yrs)  
Power in Year   
Annual Degradation . . .
Power in Year    
See warranty documents for details. Conditions apply.
ELECTRICAL DATA Product Code*: RECxxxAA Black
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) . . . . .
Power Density (W/sq ) . . . . .
Panel Efficiency () . . . . .
Power Output - PMAX (Wp)     
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance . W/sq  ( W/m), temperature °F (°C), based on a production
spread with a tolerance of PMAX, VOC & ISC ±% within one wa class. Nominal module operating temperature (NMOT: air mass AM ., irradiance
 W/m, temperature °F (°C), windspeed . /s (m/s). * Where xxx indicates the nominal power class (PMAX) at STC above.
GENERAL DATA
Cell type:
 half-cut cells with REC
heterojunctioncelltechnology
 strings of  cells in series
Glass: . in (. mm) solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction (black)
Frame: Anodized aluminum (black)
Junction box: -part, bypass diodes, IPrated
in accordance with IEC 
Connectors: StäubliMCPVKBT/KST, AWG(mm)
in accordance with IEC 
IP only when connected
Cable: AWG (mm PV wire,+ in(+.m)in
accordancewithEN 
Dimensions:  .  x x . in (x  x mm)
Weight: lbs (. kg)
Origin: Made in Singapore
STCNMOT
85
90
95
100
105
200100 300 400 500 600 700 800 900 1000
Measurements in mm [in]
Operationaltemperature:  ... +°F  ... +°C
Maximum system voltage: V
Maximum test load (front): + Pa ( lbs/sq )*
Maximum test load (rear): -  Pa (. lbs/sq )*
Max series fuse rating: A
Max reverse current: A
*See installation manualfor mounting instructions.
Design load = Test load / . safety factor)
Product SPECIFICATIONS
REC ALPHA Black SERIEs >Product SPECIFICATIONS
Founded in , REC Group is an international pioneering solar energy
company dedicated to empowering consumers with clean, affordable
solar power. As Solar’s Most Trusted, REC is commied to high quality,
innovation, and a low carbon footprint in the solar materials and solar
panels it manufactures. Headquartered in Norway with operational
headquarters in Singapore, REC also has regional hubs in North America,
Europe, and Asia-Pacific.

 REC Installation Manual - REC Alpha Panels - UL 6
Rev F  . Ref: PMIM
ANNEX : INSTALLATIONS ON WATER PLATFORMS
The REC solar panels covered by this manual may be installed on water platform-type mounting systems (note that the certification testing of solar
panels does not include testing on these types of systems). When installing 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.
INSTALLATION ENVIRONMENT
i) Installation site
• REC solar panels may only be installed on closed bodies of fresh water where water salinity does not exceed  PSU ( mS/cm) at °F (°C).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 6 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.
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.
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.
NOTE
For all installations on water platforms, first advise REC before the start of installation in case of any site specific instructions or constraints.
i
NOTE
Negative system grounding is required for REC solar panels installed on a floating platform.
i
NOTE
For installations with high avian activity, system cleaning may be required at more frequent intervals to reduce shading of panels caused by bird defecation.
i