OutBack Power Installation Manual
900-0123-01-00 Rev C  17 
Installation 
Hardware Options 
The seven versions of the GSLC come with different components already installed.  
 
GSLC
, the “basic” or “empty” version, requires almost all components to be installed if they are needed. 
Instructions for this product begin on page 19. 
 
GSLC175-120/240
 and 
GSLC175-230 
are the “inverter only” versions for Radian models GS8048, GS8048A, 
and GS7048E. They have hardware for Radian inverter AC and DC connections. Battery monitoring or PV 
capability must be installed as needed. Installation for these items begins with the DC shunts on page 23. 
 
GSLC175-PV-120/240
 and 
GSLC175-PV-230 
are the “fully-loaded” versions for Radian models GS8048, 
GS8048A, and GS7048E.  They have all options already present and need only to have external wiring and 
devices added. Users with either of these versions can skip to the wiring section on page 29.
 
GSLC175PV1-120/240
 and 
GSLC175PV1-230
 are the “fully-loaded” versions for Radian models GS4048A 
and GS3548E. They have all options already present and need only to have external wiring and devices 
added. Users with either of these versions can skip to the wiring section on page 29.
Additional AC and DC circuit breakers are available for installation on all models. 
The following pages describe the installation of individual items, including the removal of the GSLC 
covers. Page 19 lists the hardware requirements for these items. 
 
Instructions for Radian inverter mounting (along with other devices) begin on page 25.  
 
Instructions for installing the FLEXnet DC battery monitor begin on page 33. 
 
Instructions for installing the AC input-output bypass (IOB) assembly begin on page 42. 
Figure 12  GSLC – Additional Components  
Figure 13  GSLC175-120/240 and GSLC175-230 – Additional Components 
The following components are sold separately 
for the GSLC175-120/240 and GSLC175-230: 
 PV Ground Fault Detector-Interrupter (GFDI)  
 FLEXnet DC Battery Monitor (FN-DC);  
see page 32 
 Additional DC shunts and GS-SBUS 
 PV Disconnect 80-amp circuit breaker  
(PNL-80-DC) 
The following components are sold separately for the GSLC: 
  Inverter Main Disconnects (required for inverter installations) 
  AC Maintenance Bypass Assembly  
  AC Terminal Bus Bars (TBB) 
  PV Ground Fault Detector-Interrupter (GFDI)  
  FLEXnet DC Battery Monitor (FN-DC); see page 32 
  Additional DC shunts and GS-SBUS 
  PV Disconnect 80-amp circuit breaker (PNL-80-DC) 










