DASOLAR DAS-DH108NA Solar Modules Double Glass User Manual

Module User Manual

DAS-DH108NA Solar Modules Double Glass

Applicable product list

WH144PA
Double glass product| DH108PA
DH108NA
DH108ND
DH144PA
DH144NA
DH144ND
DH156NA

Introduction to user manual

First of all, thank you for choosing our products! This manual contains relevant information and data in connection with the installation mode and safety operation of the photovoltaic modules (hereinafter referred to as “Module”) manufactured by DAS Solar Co., Ltd. . DAS Solar Co., Ltd. is hereinafter referred to as “DAS Solar”. Any violation of these safety instructions may lead to casualties or property loss.
Before Module installation, installation personnel shall go through and understand these instructions. Should you have any concerns, please contact the service department of DAS Solar or our local representative for further information. Installation personnel  shall comply with all safety precautions set out in this manual, local requirements, and regulations of the law and authorized institutions. Prior to installation the solar photovoltaic system, installation personnel shall clearly understand its mechanical and  electrical requirements. The operation of the photovoltaic system requires relevant expertise, and therefore the system installation and maintenance shall be performed by qualified personnel with professional skills and knowledge.
Please keep this manual in a secure place, and adopt it as the basis for operation, maintenance and servicing, or use it upon resale or disposal of the Modules. DAS Solar Modules pass the tests of global detection and certification institutions, and can be used safely provided that the requirements set out in the provisions of this manual are observed. Any Module installation operator shall notify the above requirements to the end users (or consumers).
The “Module” or “PV Module” mentioned herein refers to one or more single- glass or double-glass series solar modules. Please keep this manual for future reference.
1.1 Disclaimer
DAS Solar reserves the right to revise this manual without prior notice. If the customer fails to comply with the requirements set out in this manual during the installation process of the Module, the limited product warranty offered to the customer will be invalidated. This manual is of no significance to the warranty, whether explicit or implied. This manual doesn’t contain any information in relation to any compensation plans for any losses, Module damage or other costs arising from or in relation to the installation, operation, use and maintenance of the Module.
DAS Solar disclaims any liability for any infringement on any patent rights or third-party rights arising from the operation or use of the Module.
1.2 Scope of liability
DAS Solar disclaims any liability for any following kinds of injuries and losses, including but not limited to any physical injuries or property losses resulted from Module misoperation Module, system installation failure, and violation of the instructions set out in this manual.
Mandatory
Otherwise the product may be damaged or the user’s personal safety may be endangered.
Prohibited
Otherwise the product may be damaged or the user’s personal safety may be endangered.

Precautionary safety measures

2.1 Warning
Please read and understand all safety rules prior to installation, wiring, operation or maintenance of the Module. Photovoltaic Modules may generate power energy when directly exposed to light sources, and a photovoltaic array comprised of multiple Modules may create dangers critical electric shock or burning, thus any person without authorization and related training shall not contact the photovoltaic Module and its wiring terminals, etc.
2.2 General safety
Please read and understand all safety rules prior to installation, wiring, operation or maintenance of the Module. When the Module’s battery is directly exposed to sunlight or other light sources, direct current (DC) can be generated, and casualties can be caused when directly contacting any electrified part of the Module, such as wiring terminals, regardless of whether the Module is connected.
When contacting the Module, please make sure to take appropriate protective measures, regardless of whether the photovoltaic Module is connected with the system, e.g.: Insulating tool, safety helmet, insulating gloves, safety belt, and safety insulating boots. When you need to carry out installation, grounding, wiring, cleaning and other operations of the Module, please make sure to use appropriate protective tools for electrical safety. Dot not have direct contact with the Module, to avoid electric shock or injury.

Under general conditions, the open-circuit voltage and short-circuit current values practically generated by the photovoltaic Module may exceed the corresponding values measured under the standard test conditions, thus please comply with the requirements provided in Article 690 of the National Electric Code (NEC) to carry out relevant operations. When determining the rated voltage of the Module, rated current of the conductor, and the specification of the fuse and other controllers connected to the output end of the Module, and if the Module installation doesn’t conform to NEC standards, please consider the actual open-circuit voltage and short-circuit current at a safety coefficient of 1.25 to the corresponding values indicated on the nameplate of the Module.
2.3 Conventional safety

• Do not stand, tread, sit, walk or jump on the Module or Module packing.
• Keep children or unauthorized persons from approaching the installation area or storage area of the Module.
• Do not connect to or disconnect the Module when the Module generates current or external current is with the Module. Do not use water to extinguish fire when power supply is not cut off.
• Do not install the Module in any area of any potentially inflammable gases. Do not stack heavy or edgy articles on the Module. Prevent the Module from fall off or any articles from dropping onto or colliding with the Module.
• Do not pull, scratch or bend the output cable with force, otherwise the insulating layer of the cable may be damaged, resulting in power leakage or electric shock. Do not insert any conductive materials into the connector of the Module. The cover of the wiring box shall be closed at all times.
• Do not damage or scratch the front or rear side of the Module to avoid adversely affecting the safety of the Module; if you find any scratch or cutting mark on the front or rear side of the Module, please do not use or installed the Module.
• Do not focus sunlight on the Module through mirror or lens. During the normal operating process of the Module, Avoid the Module from being shaded by buildings, trees and chimneys.
• The front glass of the Module plays a protective role to the Module. If the front glass is damaged, the Module may be electrically hazardous (electric shock and fire), and the Module must be replaced immediately because it can’t be repaired.
• All installation works must be in complete compliance with local regulations and corresponding domestic or foreign electrical standards.
• All Module systems must be grounded. Please comply with the international standards of IEC and other applicable standards.
• The installation works of the Module array must be performed with the protection of sunlight isolation equipment, and the installation and maintenance of the Module can only be performed by qualified professionals through insulating tools to reduce the risk of power shock.
• If battery is used by the photovoltaic system, please following the instructions of the manufacturer of the battery accessary to the Module, and make sure the battery is validated for the Module.
• It is recommended that professional operators qualified for photovoltaic system installation should be employed for the purpose of Module installation. The operation shall be performed by personnel familiar with corresponding safety procedures, so as to avoid safety hazards.

2.4 Operating safety

• Do not privately repair the Module if the front glass is damaged.
• Do not dismantle the Module or remove any part of the Module.
• Avoid any articles from directly dropping onto or colliding with the Module.
• Do not grab the wiring box or cable to lift the Module in any case.
• Do not use any edgy tool to rub the glass of the Module, otherwise scratches will not left on the Module.
• Do not install or handle the Module in the installation site under adverse weather conditions such as rain, snow or strong wind.
• Avoid mistakenly use the male and female connectors, check the wiring condition, and make sure all wires and cables are secured with the Module.
• Do not contact the wiring box or male/female connector with bare hands during the installation process or when solar radiation is exposed to the Module.
• Do not stand or walk on the packing or Module; Avoid one Module from dropping on another Module.

2.5 Fire safety
When installing the Module on roof, please comply with applicable local laws and regulations in relation to fire safety requirements of buildings prior to installation. The roof shall be covered with a layer of fireproof materials with appropriate grades before installation, and make sure that the Module and the installation face are completely ventilated. Different roof structures and installation modes may affect the fireproof performance of the buildings. Incorrect installation mode may cause fire. Use only appropriate Module components pursuant to local regulations, such as fuse, circuit breaker, and grounding connector.
Please do not install or use the Module near open fire or inflammable and explosive articles.

Precautions for handling, storage and transport

3.1 Turnover precautions

• Please use forklift to unload the Module from the truck (up to two trays of Modules at one time), and place the Module on the level ground..
• Do not stack the Modules in the project site, so as to prevent collision and damage.
• Please use rainproof fabrics to cover the Modules when they are pending for turnover for a long period so as to prevent dampness, and do not unwrap the packing.
• Packaged Modules can be transported through land transportation, sea shipping or air transportation, and make sure the module package is not rolling during transportation.
• Turnover In terms of general transport trucks, up to 2 levels of stacking can be allowed for Module transportation.
• When handling or installing the Module, do not support the Module through its back plate, avoid carrying the Module on the operator’s back, and avoid use rope to carrying the Module.
• Do not use tricycle to transport the Module. As for transport in the project site, stacking is disallowed.

3.2 Storage precautions

• The Module shall be kept in a dry and ventilated environment, and the storage conditions are as follows: Humidity＜ 85%, temperature range -40° C-50° C, and avoid sunlight exposure and humidity. If the Module is kept in an uncontrollable environment, the storage period shall not exceed 3 months, and additional measures shall be adopted to prevent dampness of connectors and avoid sunlight exposure.
• In any circumstances, please do not stand, climb, walk or jump on the Module. Local heavy load may create micro cracks on the battery, which further undermines the reliability of the Module.
• For long-term storage of the Module, please be advised to store the Module in a standard warehouse through shelves with sufficient bearing capacity and storage space, and patrol inspection shall be conducted on a regular basis to ensure storage safety. If the Module is to be stored in the project site, please avoid the loose ground tending to subside, but choose the hard ground or higher ground properly leveled and flattened, so as to ensure that long-term storage of the Module is secure without subsidence and tilting. Once any tilting condition is found, please properly provide reinforcement, while personal safety is ensured.
• In rainy days, please use rainproof fabrics to completely cover the Module and tray, and take rainproof and damp-proof measures for the tray and carton; when the weather turns sunny or windy, please timely remove the rainproof fabrics and dry off the outer packing as soon as possible, so as to avoid subsidence due to dampness and deformation.
• Avoid water immersion of the tray, and properly secure the ground water discharge measures beforehand to prevent looseness, subsidence and other unfavorable conditions of the ground due to substantial ponding after rain. Any unauthorized person is prohibited from accessing the Module storage area, and the Modules should be stored on a centralized basis.
• Please protect the packing from damage, and open the packing of the Module as per the recommended unpacking steps. Please be cautious during unpacking, transportation and storage of the Module. Keep the Module away from edgy articles, especially avoid scratch of the back plate of the Module, as scratch my directly affect the safety of the Module.

3.3 Unloading mode and precautions

• In any circumstances, short-edge packing shall be not stacked for more than 2 levels, and please reserve sufficient safety distance during forklift operation, and avoid any persons from approaching or passing by from any side. During unloading, please pay attention to the forklift speed, and prevent injury of any persons due to possible Module  tilting upon steering.
• The operation ground shall be able to ensure that the packing case is steadily placed and tilting is avoided.
• Upon arrival of the Module, please promptly inspect whether the outer packing case is intact, and verify whether the Module model and quantity indicated on the outer packing case is identical with the delivery note, and immediately contact the logistical personnel and DAS Solar’s sales personnel in case that any abnormality is found. The packing construction is as follows:

Hoisting and handling:
When unloading with hoist, please use specialized tooling, and adopt hoisting tools with sufficient tension according to the weight and size of the Module. During hoisting, please timely adjust the sling and keep the Module’s gravity center steady.
Please use a wooden board on the top of the packing case (its width shall be the same with the wooden board) or other fastening devices to prevent the sling from crushing the packing case and damaging the Module. Please operate the hoist in a steady rate, and when the hoist is approaching the ground, please hold the carton and gently secure it to a relatively level position. Please do not hoist the photovoltaic Module in any adverse weather conditions, such as strong wind greater than scale 6 (Beaufort scale), heavy snow or heavy rain. Up to 2 trays of modules are allowed for hoisting, in case of horizontal packing.
Hoisting and handling:
The height of the handling platform shall be on the same level with the carriage to the greatest extent, and the driving speed of the forklift shall be controlled within 5km/h upon straight running, and 3km/h upon steering. Emergency stop and start shall be avoided.
If the packing case shields the view of the forklift driver, the driver is advised to reversely run the forklift during the handling process, and a specialized person shall be assigned to monitor and provide guidance, so as to prevent collision with any persons or articles and avoid injury accidents or damage of the Module due to drop of the packing case. After transporting the packing case the installation site, please place it on the level and hardened ground. General warehousing forklift：
Please used forklift with appropriate lifting capacity, according to the weight of the Module. The depth of the fork sticking into the tray shall not be less than three fourths of the tray length (length of fork not less than LN3/4 of tray length)。 It is advised to extend the height or width of the forklift load-backrest to prevent direct collision of the forklift with Module glass.
In order to ensure better stability of forklift operation, please make sure that the fork spacing shall be adjusted to the largest extent possible while avoiding collision with the two corners of the tray.
Please slowly operate the forklift, and do not crush the carton or tray. Please provide protective buffering materials beforehand (for the section highlighted in yellow in the figure, please use silicone, rubber, EPE or similar materials) to prevent damage of the Module inside the packing case due to external force. 3.4 Project site transport
Project site transport refers to loading and transport of the tray-based Modules between from the storage site to the project site after the Modules arrive at the storage site.
Forklift specification requirement: Please uniformly use forklifts with the rated lifting capacity of N3.5t for loading and transfer of the Modules, and avoid direct contact of the fork protrusion with the cartons or Modules so as to prevent damage of the Modules due to collision. Fork length (L) shall be N1.0m, and fork interval (W2) shall be adjusted to approach the two corners of the tray to the greatest extent.
Gantry height (H) shall be N1.5m or gantry width (W1) shall be N2.5m.
The gantry shall be vertical to the fork, and the gantry structure shall be sturdy (able to bear the load of N1.5t).
When the entire tray of Module is leaned on the gantry, the gantry shall not be deformed due to stress.
The injunction part of the top beam of gantry and the Module packing shall be protected with buffering materials (silicone, rubber, or EPE), to avoid damage of the Module and profiles.
The specification and operating specification of forklift include but not limited to the above information. The driver shall operate the fork to slowly stick into the space baseplate and the panel from the long edge side of the tray, and avoid colliding with the Module, and make sure that both sides of the fork gantry are approaching simultaneously.
When transporting the module with the forklift, lean the packing case onto the fork gantry, and make sure to fasten the Module with safety ropes featuring the tensile strength of N2000kgf. Upon loading with the forklift, first steadily place the packing case on the ground, then remove the safety ropes when the tilting risk is negligible. Control the driving speed of the forklift during transport, and slowly withdraw the fork when unloading, so as to prevent tilting.
3.5 Secondary transport
Packaged Modules can be transported through land transportation, seal shipping or air transportation. During the transport: Please securely fix the packing case onto the transport platform, and make sure it will not be tilting or shifting.
If unpacked Modules must be transported to another project site, please be advised to combine the separate modules according to the pre-unpacking number of Modules per tray, and wrap them with inner packing straps (recommended for the tensile force of 2100N). Finally, secure the combined Modules with their outer packing cases, and further secure the packing cases (Modules) with the tray through packing  straps. Pleaserefer to the pre-packing specification for the number of packing straps.
If one tray is too large for the Modules, please refer to the below figure (left) to center the Modules on the tray (place the Modules on the right side as shown in the below figure (right) in case of distribution packing), and secure the Modules with packing straps (recommended tensile force 2100N ) Finally, secure the combined Modules with their outer packing cases, and further secure the packing cases (Modules) with the tray through packing straps. Please refer to the pre-packing specification for the number of packing straps. The tray if not fully covered by Modules shall not be placed on the lower level. Please use appropriate means of transportation to transport the Modules, and do not use tricycles to transport or handle the Modules, and do not carry out secondary transport of single-glass Modules horizontally packed. When transported through small truck, the horizontal packing can’t be allowed for stacking, and the Module must be fixed onto the trunk with safety ropes on the four sides, and the contact part between the safety rope and the carton must be isolated with corrugated paper or other buffering material. During the transport, the driving speed must be controlled according to road conditions.
When transporting the Module through a van truck or non-van truck, different trays must be stuffed to leave no space, and any empty space at the rear of the van must be stuffed and reinforced to prevent the Module’s movement to the rear during transport. When transporting the Modules through a non-van truck, each tray of Modules must be fixed onto the transport vehicle with safety ropes.
The tray must be placed within the loading area of the transport vehicle.

Unpacking mode

First place the packing on the level, dray and flattened ground, then successively remove the wrapping film, packing strap, upper cover, and carton. If you need to stack the Modules, please place the try on the level ground, and the Modules must keep stacked on the tray; Number of Modules ≤10pcs, stacking time ≤4 days. The space between two Modules must be stuffed with isolating material, and the height of the isolating material must be 15mm higher than the top of the Module (wiring box). Without the isolating material, horizontal stacking is not recommended. 4.1 Enclosed unpacking

• Prior to unpacking, please verify and confirm the intactness of the outer packing, and you are advised to remove the packing strap and wrapping film through a utility knife. Do not remove the packing materials with force, so as to avoid damage to the Modules inside.
• After unpacking, please verify whether the number of Modules in the packing case and the barcode information on the frame are the same with the shipping mark information.
• Please secure the Modules in a reliably supported or fixed environment, and open the packing of the Modules according to the recommended unpacking procedure.
• Based on different product models, the packing mode may be slightly varied. The precautions of unpacking are as follows.
• Upon unpacking, the unpacking operation must be performed by 2 or more persons simultaneously. Operators shall wear protective insulating gloves when handling the Modules to avoid injury and prevent leaving fingerprints on the glass surface.
• If the Modules are not completely withdrawn after unpacking, then the remaining Modules shall be placed horizontally for further repacking, so as to prevent tilting (upon repacking, the glass face of the lower level of Modules shall be upwards, the glass face of the top level of Modules shall be upwards, and the others downwards). The maximum number of Modules if stacked shall not exceed 16 pcs.
• If the Modules after unpacking are not subject to immediate installation (due to adverse weather conditions such as strong wind below scale 6, and provided that the number of Modules is less than 12pcs), then safety ropes shall be used to fix the vertical Modules and the leaning posts with protective measures. (As shown in the figure)
• In windy weather conditions, please do not handle the Modules, and properly secure and fixe any unpacked Modules.
• Do not move the leaning posts during the unpacking process, so as to prevent tilting of the Modules.
• Do not carry out outdoor unpacking operations in harsh weather conditions such as rain and snow.
• Prior to removing the inner packing straps, please carry out proper protection to prevent titling of the whole unit of Modules.
• The operation ground shall be able to ensure that the packing case is steadily placed and tilting is avoided.
• Do not lean the Module on the installation post. Do not use wooden strips or other items to directly contact and support the rear side of the Module.
• Do not handle the Module by a single operator, so as to avoid scratches, deformation or cracks of the Module due to sliding and collision of the Module with other Modules. When lifting the Module, do not pull the wiring box or cables to withdraw the Module.
• Please carry out the operation in strict accordance with the requirements of unpacking instructions. When removing the packing straps of horizontal packing, please provide protective measures to avoid scratching your face or eyes, and avoid standing on the tray during unpacking, but handle the Modules from the two sides of the tray.

Introduction to installation method

5.1 Introduction to installation environment
DAS Solar recommends that the Modules shall be installed in an environment with the operating ambient temperature of -20 ° C- 50 ° C (-40 ° C – 85 ° C under extreme conditions). Please provide protective measures in sandstorm, prevent sands from entering the Modules, otherwise the installation and performance may be affected. Generally, the Module shall be installed in a location which receives the most solar radiation in a whole year. In the northern hemisphere, the Module shall be installed to the south, and to the north if in the southern hemisphere.
If Module’s tilting angle deviates from due south (or due north) by 30 degrees, the power output will be 10% to 15% less, and 20% to 30% less if 60 degrees. When choosing the ideal location, please avoid trees, buildings and other obstacles which may shade the Module. Although we have installed appropriate bypass diodes to minimize the loss, shade will always reduce the output power.
When the photovoltaic generation system is used with battery, please install the battery in strict accordance with relevant laws and regulations. In doing so, the operation of the system can be protected, and the user’s safe use can be assured. Please observe the recommendations of the battery manufacturer in relation to installation, operation and maintenance of the battery. Generally speaking, the battery shall be kept away from main traffic routes of people and animals.
While ensuring normal operation of the battery, please avoid sunlight exposure and rain & snow erosion, and keep good ventilation; Most batteries generate hydrogen while in charging, which can be explosive easily, thus please do not create any open fire or spark in the surrounding environment of the battery; If the battery is installed outdoors, please make sure to place it in a specially designed location and keep good insulation and ventilation.
When the Modules are to be stacked on the roof, please first verify the bearing capacity of the roof, and prepare a construction plan conforming to applicable specification requirements.
When the Module is used in an area with high wind pressure and high snow pressure, please provide a structural design of supporting and Clamp according to the local design specification, and ensure that the external load doesn’t exceed the mechanical strength of the Module.
According to the salt-spray corrosion test of the photovoltaic Module conducted according to the requirements of IEC61701, the photovoltaic Module of DAS Solar can be installed in coastal or corrosive environment, however it can’t be immersed in water or kept moist (e.g. by foundation, wave) If the Module is installed in a salt-spray (e.g. maritime environment) or sulfur- containing (e.g. Volcano) environment, it may be exposed to the risk of corrosion. The installation location of the module should be > 50 meters from the coastline. For photovoltaic projects with a distance of less than 50 meters from the coastline, please contact the DAS solar sales staff to confirm the product plan and installation plan separately .

5.2 Module tilting angle
The tilting angle of photovoltaic Modules refers to the included angle between the photovoltaic Module and the level ground. Different tilting angles can be adopted for different projects due to varied local conditions. DAS Solar recommends that the tilting angle of the Module shall not be less than 10 ° . For your ideal choice of tilting angle, please refer to the design procedures, specifications, regulations or follow the recommendations of the Module installation provider.
In terms of ideal installation, the Module shall face south for installation in the northern hemisphere, and face north in the southern hemisphere. If the photovoltaic Module is installed in North America or other regions where UL standard applies, then, according to local laws and regulations, a clearance of 155mm (recommended value) shall be reserved between the Module (backboard surface) and the wall or roof surface. If other installation specification is adopted, the UL certification or fire resistance grade of the photovoltaic Module may be affected.
The Module can be installed by the following methods: Bolt installation and Clamp installation. The installation of the Module shall be in strict accordance with the operation instructions provided in this manual so as to conform to IEC certification. Prior to Module installation, please go through these instructions to get familiar with the entire installation procedures.
The connection between the Module and the bracket system can be made through the mounting holes of the frame, Clamp, or snap-in system. Module installation must be in line with the installation requirements. If the Module is to be installed in a way inconsistent with the instructions declared by DAS Solar, please consult the local technical support or after-sales personnel of DAS Solar and obtain the consent of DAS Solar, otherwise, the Module may be damaged and the product warranty will be invalidated.
The term “load’ mentioned in this manual refers to test load. For the installation method conforming to local laws and regulations, the safety coefficient of 1.5 shall be adopted when estimating the allowable maximum design load. The project design load is dependent on structure, application standard, installation location, and local climate condition. The design load shall be determined by professional supplier or professional engineer. For details, please comply with local architectural regulations or contact professional architectural engineer.
The described Module shall be installed on an extended continuous bracket underneath the Module. If the Module is to be installed without a continuous bracket, the maximum allowable load of the Module will decrease, which shall be reviewed by DAS Solar.
The maximum spacing between two Modules is 5mm. If special brackets are used, you may determine an appropriate interval according to the technical requirements of the bracket supplier.
Note: All installation methods introduced herein are for reference only. DAS Solar is not responsible for providing relevant installation parts, and the design and installation of the Module system. The mechanical load and safety must be verified by a professional system installation provider or qualified persons with corresponding experience.
Prior to installation, please make the following major verifications:

• Please check whether the appearance is defective, whether there are any sundries, and verify the safety performance of the wiring box. If any sundries, please remove them.
• Check whether the serial number of the Module is correct.
• The front side of the DAS Solar Modules can bear a maximum stress of 5400Pa (only limited to the Module models described in this manual), and 2400Pa for the rear side. The maximum design stress bearable by the front side is 3600Pa, and 1600Pa for the rear side. The safety coefficient is 1.5. If the installation environment of the Module is snowy and windy, please adopt particular protective measures for the installation so as to meet actual requirements.

5.3 Bolt installation

quad hole
(1400mm)| (1600mm)| (990mm)| (1100mm)| (1200mm)| (1400mm)| (1600mm)

Single glass

| WH108PA| 30| +2400，-2400| /| +5400，-2400| /| /| +2400，-2400| /
WH144PA| 35| +5400，-2400| /| +2400，-2400| /| /| +2400，-2400| /
Double glass| DH108PA| 30| +2400，-2400| /| +5400，-2400| /| /| +2400，-2400| /
DH108NA
DH108ND
DH144PA| 30| +5400，-2400| /| /| +2400，-2400| /| +2400，-2400| /
DH144NA
DH144ND| +5400，-2400| /| /| /| /|

+2400，-2400

| /
DH156NA| 35| /| +5400，-2400| /| /| +2400，-2400| | +2400，-2400

Bolt installation with outer quad holes (beam vertical to the long frame) Bolt installation with inner quad holes (beam vertical to the long frame) Bolt installation with inner quad holes (beam parallel to the long frame)
There are 4 pairs of 9*14mm mounting holes on the frames of each Module, which can be used to ideally fix the Module to the supporting structure to optimize its load bearing capacity.
In order to extend the lifespan of the installation to the greatest extent, DAS Solar strongly recommends that anti-corrosive (stainless steel) fastenings should be used.
As the standard configuration, DAS Solar Modules have 8 mounting holes for M8 bolts (as shown in the dashed box in blue color, which are hereinafter referred to as inner quad holes and outer quad holes respectively).
In case of Model 72/78 Modules, they are additionally provided with 4 mounting hours for M6 bolts, suitable for tracking brackets from vendors such as Nextracker. Through the mounting holes on the back-side frames of the Module, bolts can be used to fix the Module onto the bracket.
M8/M6 bolts, flat gaskets, spring washers and nuts are used at each fastening position to fix the Module, and tightened to the torque of 14N•m-18N•m/5N•m-12N•m. The yield strength of bolts and nuts shall not be smaller than 450MPa. All parts contacting the frames shall be fixed with flat stainless steel gaskets with the minimum thickness of 1.8mm and the outer diameter of 16mm.
5.4 Clamp installation Module long edge Clamp installation beam
Vertical to the long frame (pressing block length ≥ 40mm) Module short edge Clamp installation beam
Vertical to the short frame (pressing block length ≥ 40mm)

the short frame
Single glass| WH108PA| 30| ﹢5400，-2400| /| /| ﹢5400，-2400
WH144PA| 35| | ﹢5400，-2400| /| /
Double glass| DH108PA| 30| ﹢5400，-2400| /| /| ﹢5400，-2400
DH108NA
DH108ND
DH144PA| 30| /| ﹢5400，-2400| /| /
DH144NA
DH144ND
DH156NA| 35| /| /| ﹢5400，-2400| /

• If the pressing block installation method is adopted, please ensure that at least 4 pressing blocks are provided on each Module. Two pressing blocks are installed on each long edge (longitudinal) or each short edge (horizontal) of the Module respectively, and the number of pressing blocks used depends on the pressure intensity of wind and snow in the local environment. If the actual pressure exceeds to the estimation, additional pressing blocks or brackets shall be used to ensure that the Module can bear  the pressure.
• DAS Solar has tested the Modules with different Clamps of varied manufacturers, and recommends that M8/M6 (full thread preferred) fastenings shall be used in line with local environment. The material and type selection of fastenings shall be dependent on local environment.
• The Clamps shall clamp the Module frames for 7mm-10mm, and the minimum spacing between two modules is 10mm.
• The Module Clamps shall not get into contact with the front-side glass, and shall not deform the frames. Please make sure to avoid the shading effect of the Clamps.
• Module frames can’t be adjusted in any case. During installation or use, the drainage holes can’t be obstructed in any case.
• The torque exerted shall be determined according to the mechanical design standards of the bolts you are using.

Range of torsional moment for M8 bolts: 14N•m-18N•m;
Range of torsional moment for M6 bolts: 05N•m-12N•m;

Remarks: The material and type selection of fastenings shall be dependent on local environment.

If other sizes of pressing blocks are required, they shall first go through sufficient verification of DAS Solar.
5.5 Single-Axis installation Mounting rails run perpendicular to the long side frame.
Distance between mounting holes is 400 mm/790mm

long side frame，Distance between mounting holes
Double glass| DH144NA| 30| ﹢1600，-1600|
DH144ND| ﹢1400，-1400| ﹢2400，-2400

The bolts used in this section is to secure the module in each fixing location with an M6 bolt, two flat washers, a spring washer and a nut, and tighten them to a torque of 10-14 N.m, it is recommended to take regular inspection of the tightening to meet the torque range.
For all products covered in this section, all parts in contact with the frame should use flat stainless steel washers of minimum 1.5 mm (0.06 inch) thickness with an outer diameter of 16-18 mm (0.63-0.71 inch).
The module has to be installed on the purlins.

Module wiring

6.1 Wiring requirements

• The electrical performance parameters of the Module are derived from tests under standard test conditions, that is, solar radiation intensity 1000W/m², AM1.5 and ambient temperature 25°C. Under certain circumstances, the Module may generate a voltage or current value which is higher or lower than the rated value. When determining the rated voltage of other parts of the photovoltaic system, rated conductor current, fuse specification, and specification of control elements connected to the Module
  output, please apply the safety coefficient of 1.25 to the short-circuit current and open-circuit voltage values indicated on the Module.

• All wiring works must be performed by qualified installation personnel according to local regulations and procedures. Ensure the connectors are fastened and correctly connected without external pressure. The connectors can be only used for circuit connection, instead of circuit on/off.

• The connectors shall be kept dry and clean, and protected from rain and dampness. Make sure to avoid sunlight exposure to and water immersion of the connectors.

• Before connected in place, the connectors are not resistant to water at all, therefore the connectors shall be connected in place as soon as possible or provided with waterproof measures upon Module installation, so as to avoid exposure of the connections
  to moisture and dust.

• In case of serial connection, please proceed with the Modules with the same level of current, and the voltage generated by Modules connected in series shall not be higher than the maximum voltage allowable by the system, and the number of Modules connected in series is dependent on system design, inverter type and environment condition.

• The maximum rated fuse current value of each group of Modules connected in series is indicated on the product label and the specification & parameter sheet. The rated fuse current corresponds to the reverse current value bearable by the Module. Please select appropriate fuses based on the maximum fuse current and local electrical performance installation requirements, so as to protect the Modules connected in series and in parallel in the circuit.

• If a group of Module is connected to another group through opposite polarity, irreparable damage will be made to the Modules. Prior to parallel connection, please make sure to measure and verify the voltage and polarity of each group of Modules. If the measurement result shows that the polarity between different groups is reverse or the voltage difference is greater than 10V, then please check the structural configuration prior to connection.

• DAS Solar Modules adopt specialized ultraviolet-proof photovoltaic cables with the cross-sectional area greater than or equal to 4mm². All other cables connected to the DC system shall be with similar (or higher) specification. DAS Solar recommends that all cables shall be laid in appropriate pipes or troughs and kept away from any place that is prone to ponding. Voltage of series connection shall not be higher than the maximum voltage bearable by the system and the maximum input voltage of the inverters and other electrical devices installed in the system. In order to ensure safety mentioned above, the open-circuit voltageof the Module arrays shall be estimated under the minimum ambient temperature expected in the installation location.

• The outer diameter range of cables is 5-7mm.

• In terms of onsite wiring, please use specialized photovoltaic cables with temperature resistance of minimum 90 ° C, light fastness, and cross-sectional area not lower than 4mm² as the photovoltaic connection cable. If the Modules are to be laid on the roof, 4-6mm² photovoltaic specialized cables are preferred. The requirements of the minimum bending radius of the cables is 43mm.

6.2 Wiring method
Recommended wiring method for triple wiring box (vertical: Standard cable length (Note: Cable extension required for the single-row terminal)).
Vertical installation of Modules:
Select the standard stub cable
Stub cable natural connection method type C
Note: Serial connection for the terminals of upper and lower rows Vertical installation of Modules:
Select the standard stub cable
Stub cable natural connection method type – Horizontal installation of Modules:
Select the standard long cable or customized cable

6.3 Grounding connection
Modules must be grounded (Modules have been certified with the safety grade II), and make sure that the grounding method complies with the local electrical instructions and regulations. Qualified electrical personnel shall be engaged to perform the grounding connection operation.
In terms of the design of the Modules, anodized anti-corrosive aluminum alloy frames are adopted as rigid supports.
In order to ensure use safety and avoid the Modules from damaged by lightning and static electricity, the frames of the Modules must be grounded. Upon grounding, the grounding device must be sufficiently contacted with the inside of the aluminum alloy frames and penetrating the oxidized film on the frame surface. Do not make any additional grounding holes on the frames of the Modules. The grounding conductor or lead can be any materials used as electrical conductors as required by the National Electrical Code, such as copper and copper alloy. The grounding conductor shall be connected to the ground through appropriate grounding electrodes. The holes indicated with the grounding signs on the frames can only be used for grounding rather than Module installation. Frameless double-glass Modules are not required for grounding since they do not have bare conductors.

thread the
screw into the grounding hole, and fasten the screw to fix the adjacent Module.

We recommend that the following method should be adopted for correct grounding, as shown in Figure 3.        Figure 3 Photovoltaic Module Grounding Method (applicable to IEC)
Below is the recommended grounding method:
Grounding with the grounding clamp
There is a grounding hole Ø4.2mm in the middle (near the edge) of the back- side frame of the Module. The midline of the grounding mark and the midline of the hole are coincided, and consistent with the frame length and orientation.
The grounding between different Modules must be verified and validated by qualified electricians, and the grounding device shall be manufactured by a qualified electrical manufacturer. The recommended torsional moment value is 2.3N•m. The grounding clamp shall use 12AWG copper wires. Avoid stress and damage the copper wires during installation. Use unoccupied mounting holes for grounding. Mounting holes not used on the Module can be used to install the grounding device.

• Align the grounding clamp with the mounting hole on the frame. Thread the grounding bolt through the grounding clamp and frame.
• Place the toothed washer on one side and screw on the lock nut.
• Thread the grounding lead through the grounding clamp. The material and size of the grounding lead shall meet relevant national, regional or international laws, regulations and standards.
• Screw on the fastening bolt of grounding lead and complete the installation.

Other third-party grounding device: DAS Solar Module can be grounded through third-party ground devices, provided that the grounding is proved to be reliable and the grounding device is installed according to the requirements of the manufacturer.

Module maintenance

The module must be inspected and maintained on a regular basis, especially within the warranty period. In order to ensure that the Module can reach its optimal performance, the following maintenance measures shall be adopted preferably:
7.1 Appearance inspection

• It is recommended that a preventive check shall be performed every 6 months, and the elements of the Module shall not be replaced without authorization. Where it is required to carry out inspection or maintenance for electrical performance or mechanical performance, professional personnel are preferably engaged to carry out the inspection or maintenance, so as to avoid electric shock or casualties.
• As a protective part used in transport, the frame protection guard is not subject to appearance control, and the customer may determine to remove or retain it at sole discretion.
• Check whether the glass of the Module is damaged.
• Check whether any edgy object has contacted the Module surface.
• Check whether the Module is shaded by any obstacles and foreign matters.
• Check whether the wiring terminal of the Module is detached, etc.
• Check whether the Module surface is cracked due to artificial causes.
• Check whether the fastening bolts between the Module and the bracket are loosened or damaged, and carry out reinforcement or maintenance in a timely manner.

7.2 Connector and cable inspection
All wirings shall be performed by qualified installation personnel according to the local electrical construction procedures, specifications, manuals and regulations.
A preventive inspection shall be performed every 6 months preferably, and all wires and cables shall be inspected and verified as to whether their connection is secure. Avoid sunlight exposure to the cables and keep them from ponding areas. Keep the dryness and cleanness of the connectors, and verify whether the screw caps of the connectors are tightened. Please do not connect the connectors if they are damp, filthy or otherwise contaminated.
Please check whether the sealing glue of the wiring box is cracked, and identify any sign of aging of the Module. The checks include any damage caused by rodents, aging due to weather condition, and whether all connectors are securely connected and free of corrosion. Check whether the Modules are soundly grounded, and ensure that the contacts are clean, dry and free of corrosion at all times.
Preferably, the tensional torque and wiring condition of all terminals and bolts shall be inspected on a yearly basis. In addition, please check whether the installed hardware is fastened securely. Any looseness of connection may cause electric arcs and electric shocks that can be damaging the Module arrays.
7.3 Requirements of cleaning
Dust accumulation and contamination (e.g. industrial wastewater, bird dropping) on the glass surface of the Modules may reduce the power output, and may even result in local hot spots. The extent of impact depends on the transparency of the contaminants. Minor dust accumulation or contamination on the glass may affect the sunlight intensity and uniformity, but the hazard is negligible, as it normally will not significantly reduce the power output.
When the module is operating, please avoid any environmental influential factors which shade the Module in part or in whole, e.g.: Other Modules, Module system brackets, bird stay, substantial dusts, dirt, or plants. All these obstacles will reduce the power output significantly. DAS Solar recommends that, the Module surface shall not be shaded at any time when solar radiation is available. Dust accumulation on the Module’s glass surface will reduce the power output, thus regular cleaning is preferred.
In order to reduce potential electric shock or burning, DAS Solar recommends that the cleaning work of photovoltaic Modules shall be preferably performed when the solar radiation is weak (e.g. in early morning or at dusk), especially in areas with high temperature.
The cleaning frequency depends on the rate of dirt accumulation in the installation site. Under normal circumstances, rainwater can play the role of Module surface cleaning, which reduces the cleaning frequency. DAS Solar recommends that a moist sponge or a soft cloth shall be used to wrap the glass surface. Do not use cleansers containing alkaline or acid to clean the Modules. Do not use any rough materials to clean the Modules in any case.
The rear side of the Module is not subject to cleaning, however, if it is necessary to clean the rear side, please avoid using any edgy objects that may cause damage or penetrate the base materials.
Do not attempt to clean a photovoltaic Module with broken glass or bare wires, otherwise you may be exposed to the risk of electric shock.

7.4 Cleaning method
Method A: High-pressure water cleaning

• Water quality requirement; PH: 5~7;
• Chloride or salinity content: 0-3,000mg/L
• Turbidity: 0-30NTU
• Electrical conductivity: 1500~3000μs/cm
• Total dissolved solid: ≤1000mg/L
• Water hardness 0-40mg/L
• Non-alkaline water shall be used. When conditions allow, the cleaning shall be performed with high pressure softened water (the recommended maximum water pressure is 4MPa [40bar]).

Method B: Compressed air cleaning
For cleaning the soft filths on the Module (e.g. Dust), pneumatic cleaning is recommended. It can be applied as long as the actual cleaning performance is sound.
Method C: Moist wipe cleaning
In case of substantial filths on the Module surface, please use an insulating brush, sponge or other soft cleaning tools to carry out cleaning gently. Ensure that any brush or stirring tool used for cleaning is made of insulating materials to minimize the risk of electric shock, and that the cleaning tools will not create any scratches on the glass or aluminum alloy frames. If any oil stains, please cautiously use an eco-friendly cleanser.
Method D: Cleaning robot
If a cleaning robot is used to carry out dry cleaning, the material of the cleaning brush shall be soft plastic, and the cleaning process and post- cleaning effect shall not cause any scratches on the Module glass surface and aluminum alloy frames, and the weight of the cleaning robot shall be moderate. Any damage or power deterioration of the Module due to poor cleaning performed by the cleaning robot shall not be covered by the warranty provided by DAS Solar.
7.5 Post-cleaning Module inspection
Visual inspection of the Module shall indicate that the appearance is clean, tidy, and without dirt. Through sampling inspection, the Module surface shall be free of dust accumulation and without any evident scratches and cracks caused artificially.
Check whether the post-cleaning Module bracket is tilting or bent, etc., and whether the Module’s wiring terminal is detached, etc. After cleaning of the photovoltaic Module, make sure to maintain the cleaning records.
If the Module malfunctions after installation, please immediately notify the installation provider.

Release and execution

This manual is subject to centralized management of the DAS Solar technical platform, and the final execution and interpretation of this manual shall be the responsibility of the technical platform.

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