I am also not an electrician so my terminology may be rough / wrong, but I think
@Sanwizard is correct in his statement that there should only be a single bonded location per power source.
When the LV6548 is taking power form the grid the bond is made at the service entrance or main panel.
Based on the tests I have run with my LV6548 when in bypass mode, i can confirm it does not create an internal bond in this state. When the LV6548 is in "inverter" mode however it creates an internal bond, and disconnects the AC Input neutral. It maintains connectivity along the AC Neutral Ground. This way earthing remains, but a ground loop / neutral loop is avoided.
Therefore, my sub-panel's neutral is isolated from it's ground.
Hope this helps. The best solution if you are unsure is to hire someone qualified