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Electrical Installation

Whenever possible use the jumper cables 

provided by Sunflare. They are cut to the correct 

size and have the proper mating connectors for 

the modules. For making homerun cables follow 

the instructions and requirements below.

Conductors

Use only USE-2 or UL 4703 “PV Wire” for jumpers 

and homerun cables. These wires meet NEC 

requirements per Section 690.31 (C) for use in 

outdoor exposures in solar arrays. Minimum wire 

gauge is AWG 12 (4mm2). Use larger gauge wire 

(lower gauge number) for longer runs or where 

reduced electrical resistance is desired. Follow 

all NEC guidelines for wire size and installation 

requirements.

Connectors

Use only Multi-Contact MC4 plug connectors 

from Staubli (www.staubli-alternative-energies.

com). Using any other connector with a Sunflare 

PowerFit20 module will void the warranty.

Fuses

All Sunflare PowerFit20 modules must be 

protected by appropriate overcurrent protection 

devices per NEC guidelines. The maximum 

series fuse rating for the PowerFit20 module is 

12A. Follow all NEC guidelines for fuse rating 

requirements including size and type.

Connecting in Series

Only connect PowerFit20 modules in series 

strings and protect each series from other 

paralleled strings with proper overcurrent 

protection. It is recommended that no more 

than 6 modules should be in series per an AP 

Smart component. No more than 20 AP Smart 

components should then be connected in series.

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Maintenance and Repair

The Sunflare PowerFit20 module is designed for 

a 25-year life and under normal circumstances 

should require no maintenance. However, due to 

the wide variety of environmental conditions and 

installation practices it is recommended to fully 

inspect the system and all connections every 6 

months. 

Read these installation instructions thoroughly 

before inspecting or servicing a Sunflare 

PowerFit20 system. Inspection and service 

should only be carried out by qualified personnel 

using all appropriate OSHA recommended 

personal protection equipment. Disconnect the 

system prior to inspection. Replace any wires and 

connectors that show signs of wear or damage. 

Replace any WMS junction box cover that is 

damaged or significantly degraded. If a module 

is damaged, leave it in place. Do not attempt to 

remove the module from the roofing surface unless 

it poses an electrical risk. Doing so might damage 

the roof surface.

If service or inspection is required, disconnect the 

string with the damaged module from all other 

strings and use black out blankets to cover all 

modules in that string. Check that voltages are 

below 5V. Then, disconnect the broken module 

from the string and plug the ends of its junction 

box connections using the MC4 Staubli sealing 

caps PV-BVK4, and PV-SVK4. Then jumper around 

the module and reconnect the string.

If the damaged module has compromised electrical 

encapsulation it can be removed or encapsulated 

in place using a black silicone sealant. Sunflare 

will not be liable for roof damage if removing 

the module or for any issues that may arise from 

encapsulation by applying a sealant.

Cleaning

The Sunflare PowerFit20 module does not require 

cleaning except in the case of heavy soiling from 

dust or ash. If cleaning is found necessary to 

achieve desired power performance, then it should 

only be cleaned by professional solar module 

cleaners. Prior to cleaning the system, it must be 

inspected for safety and approved for cleaning by 

qualified personnel. Failure to inspect the system 

could lead to electric shock and possibly death.

Never use brushes, soaps, detergents or robotic 

cleaners intended for use over glass modules to 

clean the PowerFit20 modules. Use only water, 

and if required a soft sponge. Do not use soap or 

detergents to clean the module. Do not walk onto 

the array unless absolutely necessary. Do not walk 

on dirty modules or over clean modules with dirty 

shoes. Debris underfoot can damage the top sheet 

of the module leading to power loss and possibly 

module failure.

Mechanical Load Rating

For design purposes, ASC7-16 Section 30 

“Components and Cladding” should be used for 

calculating the load requirements on the module. 

Do not use the photovoltaic specific paragraphs 

in Section 29 for load development on the 

PowerFit20 product. Those sections are only 

relevant to products that are mounted above the 

roof surface and thus do not apply to the adhered 

PowerFit20 module. Set the effective wind area 

equal to one module.

Summary of Contents for PowerFit20

Page 1: ...Installation Instructions for the PowerFit20 Photovoltaic Modules...

Page 2: ...ed to one side of the seam and allow for a clean wiring for each module to go to the roof cap This piece will be installed with the butyl based adhesive included with the component WMS Junction Box Co...

Page 3: ...re conduit This will allow for a more structurally sound install along with creating a water proof sealant to prevent debris from entering the WMS Other Required Components Inverters Consult your inst...

Page 4: ...e shall not be considered to comply with the requirements of UL1703 unless the module is mounted with hardware that has been tested and evaluated with the module under this standard or by field inspec...

Page 5: ...nd death Do not attempt to install service remove touch or modify a damaged module Damaged modules should only be removed by qualified professionals wearing appropriate personal protection equipment f...

Page 6: ...nt electricity from being generated Do not wear metallic jewelry including ear nose and lip rings watchbands pins or any other metallic object during installation or troubleshooting of photovoltaic sy...

Page 7: ...Management System WMS is certified as Class A over any Class A metal standing seam roofing constructions Metal Roof Manufacturer Approvals The PowerFit20 module is fully engineered to reduce stresses...

Page 8: ...e flat space Use a rubber wheeled roller to ensure the proper pressure is applied to the module Module Installation After the roof has been cleaned to the requirements above the components can be adhe...

Page 9: ...s that are opposite the side of the WMS wire conduit pieces Using the 7 5 MC4 jumper cables connect one end to the module located on the upward slope and run it through the WMS wire conduit towards th...

Page 10: ...de of the junction box cover should go over and around the WMS wire conduit to ensure a watertight seal Apply pressure to the junction box cover to complete the installation Repeat this process until...

Page 11: ...ions with the PowerFit20 modules No more than 6 modules should be connected in series to one AP Smart component Doing any more will result in failure of the PV system Figure 11 Shows the proper connec...

Page 12: ...eplace any WMS junction box cover that is damaged or significantly degraded If a module is damaged leave it in place Do not attempt to remove the module from the roofing surface unless it poses an ele...

Page 13: ...o any roofing products with which they may come in contact Sunflare accepts no liability for damages financial losses of any kind business interruptions or lost earnings whether they be direct or inci...

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