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While the FlexBOSS21 is a hybrid inverter that is capable of functioning on its own, EG4
®
GridBOSS
allows for more flexibility and functionality.
When installing both GridBOSS and FlexBOSS21 together:
• Ensure the mounting wall is strong enough to bear the weight of all units.
• Maintain at least 400 mm of spacing between units.
• Observe all environmental specifications for all units.
• The Loads port will not be used on the FlexBOSS21
• The CT clamps provided with the inverter will not be used as all input/output data will be tracked
by GridBOSS.
• Ensure that all parallel inverters are configured before configuring GridBOSS.
For more information on the GridBOSS and specific use cases, scan the following QR code:
10. MONITOR SYSTEM SETUP
There are multiple ways for the inverter to be programmed and monitored. The most common and
convenient are the EG4
®
Monitor Center Website (monitor.eg4electronics.com) and the EG4 Monitor
App. The following sections discuss the various ways to communicate with the inverter.
Allows the user to pair the FlexBOSS21 and GridBOSS with an existing solar system.
Smart Loads
Smart loads control devices that are powered on or off according to time of use and
battery state of charge.
Generator Functions
Allows the user the option of a backup generator for when the grid is down, and PV is
insufficient to power loads.
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Overview
User Manual