Electrical and mechanical installation information will be introduced in this installation manual, so please read and understand the information before installing Ulica’s modules. In addition, this manual also contains some safety information that you shall be familiar with. All contents in this manual are intellectual properties of Ulica which originates from long term of technical exploration and experience accumulation of Ulica.

This installation manual does not entail any explicit or implicit quality warranty and does not stipulate on compensation schemes for losses, module damages or other costs caused by or related to module installation, operation, utilization and maintenance process. Ulica will not take any responsibility if patent rights or the third party rights are infringed by use of modules. Ulica reserves the rights for modifying product manual or installation manual without noticing in advance. It is recommended to visit our website regularly at www.Ulica-solar.com for the latest version of this installation manual. If customers fail to install modules as per requirements set forth in this manual, the limited warranty provided for customers will be invalid. In addition, suggestions in this manual are to improve safety of module installation, which are tested and proved by practices. Please provide this manual to PV system users for reference and advise on PPE(Personal Protective Equipment), operation and maintenance requirements and other suggestions.

The mechanical and electrical installation of photovoltaic modules shall be in accordance with applicable regulations, including electrical law, construction law and electrical connection requirements. These regulations vary from sites to sites, for example, building roof installation, vehicle applications, etc. Requirements may also vary depending on the installed system voltage, DC or AC. Please contact local authorities for specific terms.

labels on the modules contain information below:
1.1. Nameplate: product type, rated power, rated current, rated voltage, open circuit voltage, short circuit current under testing conditions, certification indicator, maximum system voltage, etc.
1.2. Current classification label: Rated working current. (H indicates High, M indicates Medium, L indicates Low),this is optional.
1.3. Serial Number label: A unique serial number which is laminated inside the module permanently which can be found in the front of the module. There are another same serial numbers beside the module nameplate and side of aluminum frame.

3.1 The application level of Ulica Solar module is ClassⅡ, which can be used in systems operating at > 50 V DC or >240 W, where general contact access is anticipated;
3.2 When the modules are for rooftop application, it is necessary to take the overall fire rating of the finished structure as well as operation and maintenance into account. The roofing PV system shall be installed after being evaluated by construction experts or engineers and with official analysis results for the entire structure. It shall be proved capable of supporting extra system bracket pressure, including PV module weight.
3.3 For your safety, please do not work on the roof without PPE(Personal Protective Equipment) which include but not limited to fall protection, ladder or stair and personal protective measures.
3.4 For your safety, please do not install or handle modules in unsafe conditions including but not limited to strong wind or gust, damp or sandy roofs.
3.5 Installing solar photovoltaic systems requires specialized skills and knowledge.
3.6 Installation should only be performed by qualified personnel.
3.7 Installers should assume all risks of injury that might occur during installation, including, but not limited to, the risk of electric shock.
3.8 One single module may generate more than 30V DC when exposed to direct sunlight. Contact with a DC voltage of 30V or more is potentially hazardous.
3.9 Do not disconnect under load.
3.10 Photovoltaic solar modules convert light energy to direct current electrical energy.
3.11 They are designed for outdoor use. Modules can be ground mounted, vehicles or boats. The proper design of support structures lies within the responsibility of the system designers and installers.
3.12 When installing the system, abide to all local, regional and national statutory regulations. Obtain a building permit if necessary.
3.13 The electrical characteristics are within ±10 percent of the indicated values of Isc, Voc and Pmax under standard test conditions (irradiance of 100 mW/cm2, AM 1.5 spectrum, and a cell temperature of 25°C (77°F) ).
3.14 Only use equipment, connectors, wiring and support frames suitable for solar electric systems.

PV modules can produce DC current under illumination, any contact of the exposed metal of the modules connection wires may result in electrical shock or burn. Any contact of 30V or larger DC Voltage can be fatal.

In case of no connected load or external circuits, modules can still produce voltage. Please use insulation tools and wear rubber gloves when operating modules in the sunlight.

No switch is on the PV modules. Operating of PV modules can only be stopped when they are kept from sunlight or covered by hard board or UV-proof materials or when the angle of the modules facing sun are placed on smooth and flat surfaces.

To avoid electric arc or electric shock hazards, please do not break down electric connection in loaded conditions. Incorrect connections will also lead to electric arc or shock. Keep connectors dry and clean and make sure that they are in good operating condition. Do not insert other metals into the connectors or carry out electric connection by whatever means.

Snow, water or other reflective medium in surrounding environments that intensify light re-flection will increase output current and power. And module voltage and power will increase under low temperature condition.

If module glass or other sealing materials are damaged, please wear PPE(personal protective equipment) and then isolate modules from the circuit.

Do not operate when modules are wet unless you wear PPE(personal protective equipment). Please follow the cleaning requirements in this manual when cleaning modules.

Do not contact connectors with the following chemicals: Gasoline, White Flower oil , woodlock oil, Mold temperature oil, Engine oil （such as KV46）, Grease（such as Molykote EM-50L）, Lubricating oil, Rust-proof oil, Stamping oil, Diesel, Cooking oil, Acetone, alcohol, essential balm, Bone-setting liquid, Banana oil, release agent（such as Pelicoat S-6）, adhesive and potting materials capable of generating oxime gas（such as KE200、CX-200、chemlok）, TBP, cleaning agent etc.

(1) Open modules outer Package when installation.
(2) Do not damage the package and do not drop packaged modules on the ground.
(3) Do not exceed the indicated maximum layer limit on the packaging carton when piling modules up.
(4) Put packaging carton in the ventilated, water-proof and dry places before unpacking modules.
(5) Follow unpacking instructions when Opening packaging carton.
(6) Carrying modules with the junction box or wires are strictly forbidden.
(7) Do not stand or walk on modules.
(8)To avoid glass to be damaged, heavy objects are not allowed on modules.
(9) Be careful when placing modules at corners in particular.
(10) Do not try to dismantle the module or remove nameplate or parts of modules.
(11) Do not paint or apply any other adhesive on modules.
(12) Do not damage or scratch backsheet of modules.
(13) Do not drill holes on the frame of module, which may reduce frame loading capacity and lead to frame corrosion and invalidation of the limited warranty provided for customers.
(14) Do not scratch anodic coating of aluminum alloy frame except for grounding connection.
Scratch may lead to frame corrosion and reduce frame loading capacity and long-term reliability.
(15) Do not repair problematic modules on your own.

Please refer to local laws and regulations before installing modules and abide by requirements on building fire protection. According to the corresponding certification standards, the fire rating of Ulica modules is Class C. The roof should be coated by a layer of fireproof materials with suitable fire protection rating for roofing installation and make sure that the back sheet and the mounting surface are fully ventilated.

Different roof structures and installation modes will affect fireproof performance of buildings. Improper installation may lead to the risk of fire.

To guarantee roof fire rating, the distance between module frame and roof surface must be ≥10cm. (4in) Adopt proper module accessories such as fuse, circuit breaker and grounding connector according to local regulations.

Please do not apply modules in where exposed inflammable gases are nearby.

Precautions and general safety rules:
7.1 The modules should be stored in the original Ulica package before installation. Protect the package from damage. Unpack the modules as per the recommended unpacking procedures. The whole process of unpacking, transport and storing should be handled with care.
7.2 Do not stand, climb, walk or jump on unpacked pallets of modules.
7.3 Before installation, ensure that all modules and electrical contacts are clean and dry.
If the modules are required to be stored temporarily, they should be stored under dry and ventilated conditions.
7.4 Unpacking must be carried out by two or more persons at the same time. It is forbidden to use the wires or junction boxes of the modules to carry the modules. Handling the modules requires two or more people with non-slip gloves; Do NOT handle the modules over-head or stack the modules.
7.5 Do not put the modules in a place that is not supported or stable.
7.6 Do not allow the modules to come in contact with sharp-pointed objectives to prevent them from scratches, avoiding a direct impact on the safety of modules.
7.7 Do not remove the original packaging if the modules require long-distance transport or long-term storage.
7.8 The finished package can be transported by land, sea or air. During transport, make sure that the package is fixed with packing straps securely to the shipping platform without movement.
7.9 Transport: Do not Stack more than two layers on truck.
7.10 Only one layer stacking is only allowed for small truck. Make sure that the package is fixed with packing straps securely to the shipping platform without movement.
7.11 Only one layer stacking is only allowed for transport at the project site.

Please make sure to have sufficient safe distance during forklift operation to prevent people from standing or passing on both sides.

When unloading using a forklift, particular care should be taken to control the travel speed and prevent tilting during cornering.

In any circumstances, for vertical landscape packages, it shall not be stacked more than two layers; for vertical portrait（only210cell series modules）packages, stacking is not allowed, if there are special needs, please contact Ulica.

The working ground needs to ensure that the packaging box can be placed horizontally and steadily to avoid tipping.

Example for vertical landscape package (short-side vertically placed) and vertical portrait package is (long-side vertically placed)shown as follows:

Upon arrival of the modules, please check the packaging box is in good condition, and check whether the module type and quantity on the outer packaging are consistent with the delivery order, if anything is wrong, please contact Trina Solar logistics and sales staff immediately.

When crane is used to unload the modules, please choose and use specialized tooling according to the weight and size of the module. Please adjust the position of the sling to keep the modules steady. To ensure the safety of the module, wooden sticks, boards or other fixtures of the same width as the outer packing cases should be used on the upper part of the box to prevent the sling from squeezing the pallet and damaging the modules. When placing the modules, do not lower the packing box too quickly and put it on a flat ground.

For vertical landscape packages, do not lift up more than FOUR pallets of modules at once; for vertical portrait packages, do not lift up more than TWO pallets of modules at once.
Do not unload modules under the weather conditions of wind more than 6 class (in Beaufort scale), heavy rain or heavy snow.

The loading dock should be as the same height as the underside of the carrier. The forklift should be driven at a controlled speed of ≤ 5 km/h in straight, and ≤ 3 km/h for turning, so as to avoid sudden stop and rapid start.

Since the packing box will block the sight of the forklift driver, it is recommended to drive backwards during the forklifting, and arrange for special supervision and command to prevent bumping into people or items causing personal injury or damage to the modules.

Please choose a flat and solid ground to place the module package after transportation to the installation site.

When using a forklift to unload the modules, please choose a forklift with suitable tonnage according to module weight. The forks should go into the pallet at least 3/4 of the pallet depth during unloading (the forks length L ≥ 3/4 of pallet length).

In order to ensure better stability during forklift transport, the forks distance (W) should be adjusted to the maximum position without any interference.

Please drive slowly and do not allow forks to hit the cartons or pallets. Please place buffer protection material (in yellow, preferably silicone, rubber, EPE) in advance to prevent the inside modules being damaged due to the external force.

It is recommended to extend the height or width of the forklift backrest to prevent directing touch with the module glass.

Please also pay attention to the following precautions when unloading (taking vertical portrait packages as an example).

  (1) Prevent collision on the top when unloading from the container.
  (2) Recommend to secure the module packageto the forklift with a safety rope, transport horizontally with no person standing on either side.
  (3)Control the speed to prevent tipping.
  (4) No collision on the module glass.
  (5) No tilting storage.

The forklift operation at project site refers to the transportation of modules between the storage site and the installation site after they arrived at the project storage site.

The packaged modules can be transported by land, sea or air. During transportation, make sure that the package is fixed with packing belts securely on the shipping platform without any movement. If the unpacked modules need to be transported to other places, it is recommended to pack the single module together in a package to the maximum number allowed, and fixed with inner packing belts (2100N force recommended). Finally, cover it with the packaging carton box and fix it with the same number of packing belts as before.

If the number of modules need to be packed is less than the maximum number allowed in a package, the modules need to be fixed and secured to the center of the pallet for utility packaging (the following figure to the left) or on the side for distribution packaging (the following figure to the right), and fixed with inner packing belts (2100N force recommended). Finally, cover it with the packaging carton box and fix it with the same number of packing belts as before. Do not put the unfulfilled package on the lower layer when transported.

Please use appropriate means of transport to transport the modules. Do not use pedicab to transport or handle the modules.

Secondary transport is not allowed for the monofacial modules that are packaged horizontally.

There is no stacking of pallets allowed (for both vertical landscape and vertical portrait packages), when transporting with small trucks. Please fix the package to the vehicle using e.g. safety ropes and control the driving speed according to the road conditions. Please put paper corner support or other buffer material between safety rope and carbon box to protect modules from damage.

When using box trucker and flatbed trucker transport the modules, the module packages should be placed close to each other without any gap. The empty space needs to be filled to prevent the package moving backwards to the rear of the truck. Additionally, every package needs to be fixed using e.g. ropes to the vehicle when transporting with the flatbed trucker.

Do not allow pallets to exceed the loading area of the transport vehicle.

Modules should be stored in a dry and ventilated environment on a flat ground (for vertically portrait package, the inclination of ground need to be less than 8°), to avoid damage or dumping of the modules due to ground deformation or collapse.

Storage requirements: relative humidity < 85% and temperature range of -40°C to 50°C.

Do not remove the original package and keep the wrapping film and carton box in a good condition, if the modules require long-distance transport or long-term storage.

For long-term storage, it is recommended to store the modules in a standard warehouse with regular inspection, and under confirming of your personal safety, reinforce the package in a timely manner if any anomalies are found.

The warehouse shelves should have sufficient carrying capacity and storage space, regular inspection is required to ensure the storage safety.

If you need to store the modules in the project site, do not choose soft ground and the ground that is easy to collapse, should choose a hard ground or a higher ground with flat surface to ensure the module packages not collapsing and tilting for long-term storage.

In rainy weather, please fully cover the modules and pallets with a rain protection and take moisture-proof measures on pallets and cartons to prevent collapse and moisture ingress. Under sun or wind, remove the rain cloth to allow the package to dry as soon as possible, prevent package collapse caused by the rain.

Do not allow the pallets to soak in water. The ground drainage measures should be done previously for the storage site to prevent a large amount of water accumulation on the ground after rain, causing the ground to soften, sink, etc.

Do not allow unauthorized persons to access the module storage area.

The modules should be centrally stored.

Before unpacking, please check the product type, power bins, serial number and relevant suggestions on the A4 paper of the packaging box, and read the unpacking instructions carefully. Custom unpacking methods are prohibited.

Before unpacking, please make sure that the packaging box is in good condition, it is recommended to use art knife to remove the packing belt and wrapping film. Violent removal is prohibited to avoid scratching the modules in the box.

Please check that the number of modules in the box and the barcode information on the module frame are consistent with the information on the A4 paper on the packaging box.

Please follow the recommended unpacking steps to unpack the modules. When unpacking, it must be operated by two or more people at the same time. Always wear insulating gloves when handling the modules.

If all the modules are not taken out after unpacking, the remaining modules shall be placed horizontally and repackaged to prevent them from tipping. When packaging, please note that the glass side of the bottom module should face up, the glass side of the middle modules should face down, and the glass side of the top module should face up. Stacks of modules should contain no more than 16 modules, and the frames should be aligned.

If the unpacked modules are not installed immediately, they should be fixed to the stand supporter with a safety rope under weather of 6 class wind (the modules should be less than 12 pieces).

In windy weather, it is recommended not to carry the modules, and the unpacked modules should be properly secured.

Do not unpack the modules outside under rain and snow conditions.

Do not carry the module by one person to prevent the module from slipping and hitting other modules,

causing scratches, cracks, or deformation on the modules.

Do not lift modules by their cables or junction box.

Before removing the inner packing belts, please take measures to protect the modules from dumping.

If unpacking the vertical landscape packages on non-horizontal ground, anti-tilting measures should be taken.

The vertical portrait packages have a high center of gravity and are prohibited to unpack on non-horizontal or soft grounds to avoid personal injury or even death.

When unpacking vertical portrait package, do not stand on the back of the stand supporter, please operate in strict accordance with the requirements of the unpacking instructions.

When removing the packing belts in vertical portrait package, take care not to hurt yourself (face, eyes, etc.).

Do notstand on the pallet during unpacking, please carry the modules from sides of the pallet.

Do not move the stand supporter during unpacking to prevent the modules being tilted.

Do not lean the module on any instable objects, such as poles or mounting columns.

Do not support the back of the modules directly with materials such as wooden strips.

Method A(Vertical portrait package, long-side vertically placed): Unpacking forUL-660M-132HVetc. series modules with vertical portrait package.

Unpackingsteps as below:
Step1 Remove the wrapping film and packing belts.
Step2 Remove the top cover and sealing tape.
Step3 Remove the carton box.
Step4 Place the stand supporter from the glass or backsheet side.Step5 cut off the horizontal packing bets.
Step5 cut off the horizontal packing bets.
Step6 When there are 1-2 vertical packing beltsremaining, push the modulegently to tilt toward the stand supporter.
Step7 Cut off the remaining packing belts so that the modulesrest on the stand supporter.
Step8 Take out the modules in order

Method B( Unpacking for vertical landscape package, short-side vertically placed), Unpacking for modules that power less than 560W.

Step1 Step1 Remove the wrapping film and packing belts
Step2 Remove the top cover and sealing tape.
Step3 Place the stand supporter that is higher or wider than themodule in order to avoid hitting and damaging the glass.
Step4 Cut off all the horizontal packing belts; when there are 1 or 2 vertical packing belts remaining, push the module gently to tilt toward the stand supporter.
Step5 Cut off the remaining packingbelts.
Step6 Take out the modules in order

(1)The modules cannot be used in space.
(2) Do not manually focus sunlight with mirrors or magnifying glass onto modules.
(3)3 Ulica modules shall be installed on proper buildings or other appropriate places (such as ground, garage, building outer wall, roof, PV tracking system) but shall not be installed on any vehicles.
(4) Do not install modules at places that are possible to be flooded.
(5) Ulica suggests that modules be installed in the working environment with the temperature of -20℃ to 50℃ of which is the monthly average highest and lowest temperature of the installation sites. The extreme working environment temperature for modules is -40℃ to 85℃.
(6) Make sure that installed modules do not suffer wind or snow pressure that exceeds the permissible maximum load limit.
(7) Modules shall be installed in places free from shadows throughout the year. Make sure there are no light-blocking obstacles in the installation sites.
(8) Carry out lightning protection for modules installed in places with frequent lightning and thunder.
(9) Do not install modules in places with possible inflammable gases.
(10) Modules cannot be used in environments with too much hails, snows, flue gas, air pollution and soot or in places with strong corrosive substances such as salt, salt mist, saline, active chemical steam, acid rain, or other substances corroding modules, affecting modules’ safety or performance.
(11) Please take protective measures to ensure reliable and safe installation of modules in severe environments such as heavy snow, cold and strong wind or islands close to water and salt mist or deserts.
(12) Ulica modules passed the IEC61701 salt spray corrosion test, but the corrosion may still occur on where the modules frame is connected to the bracket or where the grounding is connected. In case Ulica modules are installed 50m –500m away from the ocean side, stainless steel or aluminum materials are need to be used to contact the PV modules, and the connection point should be protected with anti-corrosion measures. If it needs to be installed within 50m of the sea or on the sea or beach, please contact the sales representative of Ulica.

Tilt angle of modules: Included angle between module surface and horizontal surface; the module will obtain the maximum power output in direct facing of sunlight.

Modules are preferred to be south-facing in the north hemisphere and north-facing in the south hemisphere. Please refer to standard modules installation guideline or suggestions from experienced PV module installer, for the specific installation angle.

Ulica suggests that tilt angle of module installation be no less than 10°, so module surface dust can be washed away easily by rainfall and frequency of cleaning can be reduced. In that case, the PV’s generation will difficult to guarantee. If the tilt angle of module installation less than 5°, some cells will cause hot spots caused by dust and pollutants and reduce power generation, even with regular maintenance, the power generation may not meet the expectations. The tilt angle of module installation less than 1° is strictly prohibited, if not the warranty will be invalid.

And it is easy for ponding to flow away and avoid water mark on the glass due to long time of water ponding which may further affect module appearance and performance.

Ulica modules connected in string should be installed with the same orientation and tilt angle. Different orientations and tilt angles may result in different received solar irradiation and output power loss. In order to achieve the maximum annual generating capacity, the optimal orientation and inclination of PV modules in the installed area should be selected to ensure that sunlight can still reach to modules even on the shortest day of the year.

If Ulica modules are used in off-grid System, the tilt angle should be calculated based on seasons and irradiation to maximize the output power. If the modules output power meets the acquired load under the period of the worst irradiation in the year, the modules should be able to meet the load of the whole year. If the Ulica modules are used in grid-connected system, the tilt angle should be calculated based on the principle to maximize the yearly output power.

(1)Make sure that module installation mode and bracket system can meet the expected load, which is requisite assurance that the bracket installer must provide. Installation bracket system shall be tested and inspected by the third party testing institution with static mechanical analysis capacity in accordance with local national standards or international standards.
(2) Module bracket shall be made from durable, corrosion resistant, UV-proof materials.
(3) Modules shall be fixed on the bracket solidly.
(4) Use higher brackets in places with heavy snow accumulation so the lowest point of modules will not be shadowed by snow for a long time. In addition, make the lowest point of modules high enough so as to avoid shading of vegetation and woods or reduce damage of sands and stones.
(5) If modules are installed on brackets parallel to the roof or wall, the minimum gap between the module frame and the roof/wall shall be 10cm for air ventilation in case of module wire damage.
(6) Make sure the building is suitable for installation before installing modules on roof. Moreover, seal properly to prevent leakage.
(7) The module frames can appear thermal expansion and cold contraction so the frame interval between two adjoining modules shall be no less than 10mm.
(8) Make sure that backsheet of modules will not be in contact with bracket or building structures that can pierce into the inside of the modules, especially when the module surface is imposed by pressure.
(9) Maximum static load of the PV module is down force 5400pa and uplift force 2400pa, which can vary from different mounting methods of the modules (please refer to the following installation guidance), the described load in this manual is for the test load.
(10) Note: on the basis of IEC61215 - 2016 installation requirements, when computing the corresponding maximum design load, need to consider the safety factor of 1.5 times.
(11) Modules can be installed horizontally or vertically. When installing the modules, be cautious not to block the drain hole of the frame.

Module and bracket system connection can be realized by mounting holes, clamps or embedded systems. Installation shall follow the demonstration and suggestions below. If installation mode is different, please consult Ulica and obtain approval. Otherwise, modules may be damaged and limited warranty will be invalid.

Apply bolts to fix modules on the bracket through mounting holes on the back frame. See details in Figure6.

Suggestion :
（1） M8 bolt tightening torque range: 14N•m-18N•m; M6 bolt tightening torque range: 8N•m-12N•m;
（2） When using Ulica 30mm (30H) height frame module, it is recommended to select L ≤ 20mm length fasteners. (If there is a special model, consult Ulica customer service).

The module can be mounted by a dedicated clamp, as shown in Figure 8. Under no circumstances should the clamp touch the glass or deform the frame. The interface of the clamp to the front of the frame must be smooth and flat to prevent frame or other components from being damaged.

Make sure no shadowing effect of the fixture.

The drain hole cannot be blocked by the fixture.

For framed PV module, the clamp must maintain an overlap of 8-11 mm with the frame of the module (you can change the cross section of the clamp if the module is securely installed). For frameless PV module,the clamp must maintain an overlap of 15 mm at maximum with the module.

Module type	Cell type	Cell quantity	Dimensions (mm)	Length of cable (mm) positive/ negative	Flame Dimensions (mm)
UL-xxx M-120（166）	166*166	6*10*2	1755*1038*30	400/200	30*30
UL-xxx M-108（182）	182*182	6*9*2	1722*1134*30	400/200	30*30
UL-xxx M-108（188）	182*188	6*9*2	1762*1134*30	400/200	30*30
UL-xxx M-108（191.6）	182*191.6	6*9*2	1800*1134*30	400/200	30*30
UL-xxx M-120（188）	182*188	6*10*2	1952*1134*30	400/200	30*30
UL-xxx M-144（166）	166*166	6*12*2	2094*1038*35	400/200	35*35
UL-xxx M-144（182）	182*182	6*12*2	2279*1134*35	400/200	35*35
UL-xxx M-144（191.6）	182*191.6	6*12*2	2382*1134*30	400/200	30*30
UL-xxx M-132（210）	210*210	6*11*2	2384*1303*35	400/200	35*35

The following installation methods and mechanical loads have been verified by the Ulica Solar’s Laboratory for PV Science and Technology. The following installation methods is Simple installation mode, these installation mode are not Ulica’s recommended installation method.

The common advantages of simple installation methods are convenient installation and low installation cost. The disadvantage is that after installation, the anti snow load capacity of the components is weak, which can easily lead to component fragmentation. It is not recommended to use them in areas with snow cover greater than 0.5 meters. The installation method of clamps only on the short side can easily cause slight bending and sagging of the aluminum frame due to the large span of the modules. Customers who are concerned about this phenomenon are prohibited from using this installation method. Add a guide rail in the middle of the long edge of the component, so that the middle of the component does not sag significantly.

L=long frame length
W= short frame length

Installation Method Module Type	Use 4 clamps on the short side. Mounting rails run perpendicular to the long side frame. （fixture length≥ 40mm , 1/4W-50≤A≤1/4W+50）	Use 4 clamps on the short side. No mounting rails （fixture length≥ 40mm , 1/4W-50≤A≤1/4W+50）
UL-xxx M-120（166）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤1600Pa, Uplift load ≤1600Pa
UL-xxx M-108（182）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤1600Pa, Uplift load ≤1600Pa
UL-xxx M-108（188）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤1600Pa, Uplift load ≤1600Pa
UL-xxx M-108（191.6）	Down force load ≤1600Pa, Uplift load ≤1600Pa Down	force load ≤1600Pa, Uplift load ≤1600Pa
UL-xxx M-144（166）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤1600Pa, Uplift load ≤1600Pa
UL-xxx M-144（182）	Down force load ≤1200Pa, Uplift load ≤1200Pa	Down force load ≤1200Pa, Uplift load ≤1200Pa
UL-xxx M-144（191.6）	N/A	N/A
UL-xxx M-120（210）	N/A	N/A
UL-xxx M-132（210）	N/A	N/A

Installation Method Module Type	Use 4 clamps on the long side. No mounting rails （fixture length≥ 40mm ,A=1/4L±50mm ）	Use 6 clamps on the long side. No mounting rails （fixture length≥ 40mm ,A = 1/4L±50mm , ,B = (0 - 50) mm ）
UL-xxx M-120（166）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤7200Pa, Uplift load ≤3800Pa
UL-xxx M-108（182）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤7200Pa, Uplift load ≤3800Pa
UL-xxx M-108（188）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤7200Pa, Uplift load ≤3800Pa
UL-xxx M-108（191.6）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤7200Pa, Uplift load ≤3800Pa
UL-xxx M-144（166）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤7200Pa, Uplift load ≤3800Pa
UL-xxx M-144（182）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤6000Pa, Uplift load ≤3800Pa
UL-xxx M-144（191.6）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤6000Pa, Uplift load ≤3800Pa
UL-xxx M-120（210）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤6000Pa, Uplift load ≤3800Pa
UL-xxx M-132（210）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤6000Pa, Uplift load ≤3800Pa

Installation Method Module Type	Use 4 clamps on the short side and 2 clamps on the long side. No mounting rails。（fixture length≥ 40mm, A =1/4W±50mm,B = (0 - 50) mm)	Use 2 clamps on the short side and 2 clamps on the long side. Mounting rails run perpendicular to the long side frame. （fixture length≥ 40mm ,A = 1/4L±50mm mm, B =1/4W +50/-100mm）
UL-xxx M-120（166）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-108（182）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-108（188）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-108（191.6）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-144（166）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-144（182）	Down force load ≤3600Pa, Uplift load ≤2400Pa	Down force load ≤2400Pa, Uplift load ≤1800Pa
UL-xxx M-144（191.6）	Down force load ≤2400Pa, Uplift load ≤2400Pa	Down force load ≤1800Pa, Uplift load ≤1800Pa
UL-xxx M-120（210）	Down force load ≤2400Pa, Uplift load ≤2400Pa	Down force load ≤1800Pa, Uplift load ≤1800Pa
UL-xxx M-132（210）	Down force load ≤2400Pa, Uplift load ≤2400Pa	Down force load ≤1800Pa, Uplift load ≤1800Pa

Installation Method Module Type	Slide-in rails on the short side. No fixture. Mounting rails run perpendicular to the long side	Use 4 clamps on the long side. Mounting rails run perpendicular to the long side frame. （fixture length≥ 40mm, A=1/4L±50mm）
UL-xxx M-120（166）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-108（182）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-108（188）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-108（191.6）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-144（166）	Down force load ≤1600Pa, Uplift load ≤1600Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-144（182）	Down force load ≤1200Pa, Uplift load ≤1200Pa	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-144（191.6）	N/A	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-120（210）	N/A	Down force load ≤5400Pa, Uplift load ≤3800Pa
UL-xxx M-132（210）	N/A	Down force load ≤5400Pa, Uplift load ≤3800Pa

Modules and mounting system can be connected by bolts, clamps or embedded systems. Installation shall follow the demonstration and suggestions below. If installation mode is different, please consult Ulica and obtain approval. Otherwise, modules could be damaged and quality warranty will be invalid.

Apply bolts to fix modules on the bracket through mounting holes on the back frame. See details in Figure 10. A is the overlapping size of module frame and bracket.

（1）M8 bolt tightening torque range: 14N•m-18N•m; M6 bolt tightening torque range: 8N•m-12N•m;
（2）When using Ulica 30mm (30H) height frame module, it is recommended to select L ≤ 20mm length fasteners. (If there is a special model, consult Ulica customer service).

See details in Figure 12. The clamp shall not be in touch with glass or deform module frame in any case. The interface of the clamp and frame front side shall be flat and smooth to prevent frame and module being damaged.

Avoid the shadow blocking effect of the clamp.

The drain hole cannot be blocked by the clamp. For framed PV module,the clamp must maintain an overlap of at least 8 mm but no more than 11 mm with the frame of the module (you can change the cross section of the fixture if the module is securely installed).For frameless PV module,the clamp must maintain an overlap of 15 mm at maximum with the module.

Bifacial modules can be installed with bolts into 4 outer installation holes, bolts into 4 inner installation holes, bolts into 400mm-span installation holes, and fixtures. Detailed installation positions and corresponding load capacities are shown in the table below.

Installation Method Module Type	Installation with bolts		Installation with fixtures
	Installation with bolts into 4 outer holes (Beam parallel to long sides)	Installation with bolts into 4 inner holes (Beam parallel to long sides)	Installation of framed module with fixtures on long side. Beam parallel to long sides) 1/4L-50≤D≤1/4L+50(Beam parallel to long sides)	Installation of framed module with fixtures on long side. (beam perpendicular to long sides) .1/4L-50≤D≤1/4L+50 （ beam perpendicular to long sides ）
UL-xxx M-108（188）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa
UL-xxx M-108（191.6）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa
UL-xxx M-144（182）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa
UL-xxx M-144（191.6）	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa	Down force load 5400Pa, Uplift load ≤1800Pa	Down force load ≤5400Pa, Uplift load ≤2400Pa
UL-xxx M-120（210）	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤2400Pa
UL-xxx M-132（210）	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤1800Pa	Down force load ≤3600Pa, Uplift load ≤2400Pa

The reported performance measurements are subject to +/-3% uncertainty at STC（1000 W/m2 Irradiance, a cell temperature of 25℃ and an AM1.5 spectrum）for voltage, current and power.

When modules are in series connection, the string voltage is sum of every individual module in one string.

When modules are in parallel connection, the current is sum of the individual module as shown in below figure 13. Modules with different electric performance models can not be connected in one string.

The maximum allowed quantity of modules in string connection shall be calculated according to relative regulations. The open circuit voltage value under the expected lowest temperature shall not exceed themaximum system voltage value allowed by modules and other values required by DC electric parts. (Ulica modules maximum system voltage is DC1000V/DC1500V---actually system voltage is designed based on the selected module and inverter model.) The VOC factor can be calculated by the following formula.

CVoc=1-βVoc×(25-T) T: The expected lowest temperature of the installation site. β: VOC temperature coefficient (% /℃) (Refer to modules data sheet for further detail) If there is reverse current exceeding the maximum fuse current flowing through the module, use over current protection device with the same specifications to protect the module; if parallel connection are more than 2, there must be an over current protection device on each string of module.

In module design, adopt junction boxes with the protective level of IP67 for on-site connection to provide environmental protection for wires and connections and contacting protection for non-insulating electric parts. The junction box perform the protective level of IP67 with well connected cables and connectors. These designs facilitate parallel connection of modules. Each module has two individual wires connecting the junction box, one is negative pole and the other is positive pole. Two modules can be in series connection by inserting the positive pole at one end of wire of one module into the negative pole of the adjoining module.

According to local fire protection, building and electrical regulation, apply proper cable and connector; ensure the electrical and mechanical property of the cables (the cables should be put in a catheter with anti-UV aging properties, and if exposed to air, the cable itself should have anti-UV aging capability). The installer can only use single-wire cable, 2.5-16mm2(5-14 AWG), 90 ℃ , with proper insulation capability to withstand the maximum open circuit voltage (such as EN50618 approval). Need to select appropriate wire specifications to reduce voltage drop.

Ulica requires that all wiring and electrical connections comply with the appropriate ‘National Electrical Code’.

When cables are fixed on the bracket, avoid mechanical damaging cables or modules. Do not press cables by force. Adopt UV resistant cable ties and clamps to fix cables on the bracket. Though cables are UV resistant and water proof, it is still necessary to prevent cables from direct sun light and water immersion. The minimum bending radius of cables should be 43mm. (1.69in)

Please keep connectors clean and dry. Make sure connector caps are fastened before connection. Do not connect connectors under improper conditions of damp, dirty or other exceptional situations ）. Avoid connectors from direct sun light and water immersion or falling onto ground or roof.

Incorrect connection may lead to electric arc and electric shock. Please make sure that all electric connection is reliable.

Make sure all connectors are fully locked.

Only compatible connectors can be mated, i.e. from the same vendor and model, shall be used;(If you need to use different types of connectors, please consult customer service of Ulica solar )

Ulica solar module junction box contains bypass diode which is in parallel connection with the cell string. If hot spot occurred, the diode will come into operation to stop the main current from flowing through the hot spot cells in order to prevent module over-heated and performance loss. Notice, bypass diode is not the overcurrent protection device.

If the diode is definite or suspected to be defective, the installer or system maintenance supplier shall contact Ulica.

Please do not try to open the module junction box on your own.

Protection and Inverter Compatibility.

PV modules may appear Potential Induced Degradation (PID) under high humidity, high temperature and high voltage condition. Modules may appear Potential Induced Degradation (PID) under the conditions below:
(1) PV modules install under hot and humid weather condition.
(2)PV modules installation site is under long term humid condition such as floating PV system.
(3)To reduce the risk of PID, on the modules DC connection site, it is recommended to connect the negative to ground.

The PID protection measures on system level are recommended as follow:
(1) For isolated PV inverter, the negative of the PV modules DC connection side can be directly grounded.
(2) For non-isolated PV inverter, isolated transformer is needed to be installed before applying virtual grounding (grounding method guidance from the inverter manufactures are usually needed).

In design of modules, the anodized corrosion resistant aluminum alloy frame is applied for rigidity support.

For safety utilization and to protect modules from lightning and static-electricity damage, the module frame must be grounded.

The grounding device must be in full contact with inner side of the aluminum alloy and penetrate surface oxide film of the frame.

Do not drill additional grounding holes on module frame.

The grounding conductor or wire may be copper, copper alloy, or any other material acceptable for application as an electrical conductor per respective National Electrical Codes. The grounding conductor must then make a connection to ground with a suitable ground electrode.

Holes marked with a grounding mark on the frame can only be used for grounding but not for mounting.

Frameless double glass modules have no exposed conductor, and therefore according to regulations it did not need to be grounded.

(1) Grounding by grounding clamp.
There is a grounding hole with the diameter of Ø4.2 mm at the edge of the module back frame. The central line of the grounding sign also located on the edge of the module back frame overlaps with that of the grounding hole.
Grounding between modules shall be confirmed by qualified electricians and grounding devices shall be manufactured by qualified electric manufacturer. The torque of copper core wire used for the grounding clamp is recommended to be 2.3N•m. 12 AWG. And copper wires cannot be pressed during installation in case of damaging.

(2 ) Grounding by unoccupied mounting holes .
Mounting holes on modules that are not occupied can be used for installing grounding components.
◆ Align grounding clamp to the frame mounting hole. Use grounding bolt to go through the grounding
◆ Put the tooth side of the washer on the other side and fasten the nuts.
◆ Put grounding wires through the grounding clamp and grounding wire material and dimension shall meet requirements in local national and regional law and regulations.
◆ Fasten bolts of grounding wires and then installation is completed.

The third party grounding device can be used for grounding of Ulica modules but such grounding shall be proved to be reliable. Grounding device shall be operated in line with stipulations of the manufacturer.

Accumulated contaminants on module surface glass will reduce the power output and lead to local hot spot, such as dust, industrial wasted water and birds’ droppings. The severity of influence is determined by transparency of wastes. Small amounts of dust will affect the intensity and evenness of received solar irradiation but are not dangerous and power will not be reduced remarkably generally.

During operation of modules, there shall be no environmental factors to shade modules fully or partially. These environment factors including other modules, module mounting system, birds dwelling, dust, soil or plants. These will significantly reduce output power. Ulica suggests that the module surface should not be shadowed in any case.

Frequency of cleaning depends on dirt accumulation speed. In normal situations, rainwater will clean the module surface and reduce the cleaning frequency. It is suggested to use sponge dipped with clean water or soft cloth to wipe the glass surface. Do not use acid and alkaline detergents to clean modules. Do not use tool with rough surface to clean in any case.

In order to avoid potential risk of electrical shock or burn,Ulica suggests cleaning the modules during early morning and evening with low irradiance and low modules temperature especially area with high average temperature.

In order to avoid potential risk of electrical shock, do not try to clean the modules with glass damage or expose wires.

(1) Module glass cracks.
(2) Corrosion at welding parts of the cell main grid, caused by moisture into the module due to damage of sealing materials during installation or transportation.
(3) Check whether there are traces of burning mark on the module back sheet.
(4) Check PV modules if any signs of aging including rodent damage, climate aging, connectors tightness, corrosion and grounding condition.
(5) Check if any sharp objects in contact with PV modules’ surface.
(6) Check if any obstacles shading the PV modules.
(7) Check if any loose or damage screws between the modules and mounting system. If so, adjust and fix in time.

Check if any crack or gap of silicone nearby the junction box.

This manual document is implemented and managed by product management department. Product management department reserves the right to modify and revise in any time.