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Balance of System
Sunflare PowerFit modules require ancillary components and materials- some of which can be procured from Sunflare. Other components are available from various suppliers. This page should be used as guidance to ensure all the proper components are procured before installation begins
Metal Standing Seam Roof Width Requirement
In order for PowerFit to be properly installed, the width between the internal peaks of the seams must be no less than 15.5”. PowerFit is only compatible with flat standing seam roofs. Any striations or other non-flat surfaces may prevent the module from adhering for the intended lifetime. The PowerFit modules are designed for metal standing seams roofs with at least 15.5” wide measured on center between the seams. The space between the seams must be flat with no ribbing in the channels.
SunflareArray Components List
These components must be purchased through Sunflare or a certified Sunflare supplier.
Wire Management System Wire Conduit
(1 unit per PF20 module)
Specs: 1675.0 x 31.75 x 31.75 mm
PVC wire conduit that runs parallel with the peak of each seam. It will be justified to one side of the seam to allow for wiring for each module to go to the ridge cap. This piece will be installed with the butyl-based adhesive included with the component.
Wire Management System Spacer Tube
(1 unit per 2 PF20 modules)
Specs: 203.2 x 50.8 x 25.4 mm
PVC spacer tube used for two functions:
1) as placement between two adjacent modules and 2) as a way to adhere the junction box to the roof. The spacer tube comes with two sides of adhesive to install onto the roof and the underside of the junction box cover.
Wire Management System Junction Box Cover
(1 unit per 2 PF20 modules)
Specs: 388.3 x 235.0 x 31.9 mm
PVC junction box cover used to house and protect the wiring between two adjacent modules. It will be adhered using liquid adhesive to create a water-tight seal.
8” Jumper Cable
(1 unit per 2 PF20 modules)
Specs: 8” long. 10AWG PV wire with MC4 heads
Pre-cut MC4 PV cabling for an easy connection between two adjacent modules. This cable will be housed underneath the junction box cover.
7.5’ Jumper Cable
(1 unit per PF20 module that is closest to the ridge cap)
Specs: 7.5’ long, 10 AWG PV wire with MC4 heads
Pre-cut MC4 PV cabling for connecting one pair of modules to another pair of modules. This cable will run from a junction box on one PowerFit20, through the WMS wire conduit, to the next pair of PowerFit20s.
12’ Jumper Cable
(1 unit per 2 PF20 modules)
Specs: 12’ long, 10 AWG wire with MC4 heads
Pre-cut MC4 PV cabling for connecting (2) modules together in series for the PowerFit20. This cable will also allow for the top module to be connected to the MLPEs in the ridge cap where a 3 foot set back will be required.
AP Smart System Component RSD-S-PLC
(1 unit per 2-4 PF20 modules)
Specs: 129 x 30 x 16 mm
Allows for the rapid shutdown of the PV system while meeting the NEC 2017 and 2020 requirements. This device will be attached underneath the ridge cap of the building and connected to each row of modules per seam.
OTHER REQUIRED COMPONENTS
Inverters
Consult your solar electrical designer to determine the optimal inverter that will be compatible with the PowerFit20 system. Attached is a compatibility list for the AP Smart Component suggested by Sunflare. If the AP Smart Component is not being used, one should consult the installer for the optimal inverter based on the array size
MLPE (if not using AP Smart Components)
If the AP Smart Component is not being used to meet rapid shutdown requirements, it is important that the proper MLPE is used for a given system. Consult the Sunflare Compatibility Page for determining which inverter and accompanied MLPE is best for the desired system. All technical and installation documents should be read for the selected MLPE before installation.
Wiring for homeruns
Extra PV wiring will be needed to complete the PowerFit20 array. This wiring will be needed to connect modules between seams, as well as being used as the final homeruns going to the inverter. Consult your solar electrical designer that the proper gauge cable is used depending on the appropriate array size.
MC4 Male/Female heads
Sunflare’s PowerFit20 modules use MC4 male and female connectors. MC4 male and female connectors will be needed for completing the excess wiring with the proper sized PV cables.
The following components should always be considered when planning an installation.
Rapid Shutdown wall switch
Proper PV system labels as required by NEC
Additional conduit to run from ridge cap to electric meter
Combiner boxes
Isopropyl Alcohol under 70% and microfiber rags for roof cleaning
Pressure roller for applying pressure to the module