Hi romakad. Welcome to the Fourm.
As Wb mentioned, if you can determine the manufacturer of your batteries, DO contact them for their recommended Charge Parameters for Renewable Energy (as in Solar) charged systems. AND, ask for the correct Temperature Compensation value, which you will want to enter into the Classic's Charge Menu.
If your batteries ARE Flooded, also ask for the target Specific Gravity (SG) readings when batteries are fully-charged.
Also, if your batteries are Flooded, make certain that you have a good quality Hydrometer, to measure and record the readings of each cell, in your Battery Logbook.
If you number each battery and, perhaps use a letter for each cell, Like battery 1, cell A, B, C, etc, this will help you notice trends, record charge settings, and so on, and be able to find this important info, later.
If your batteries are GC-2 (Golf Cart) batteries, it may be a bit difficult to determine just which company manufactured the batteries. If this is the case, please Post the brand name of the batteries, and others can help you with the manufacturer, and/or charge parameters.
As you probably know, those Flooded 1, 2, 3 profiles from Manual pg. 61, are actually Switch settings for the Classic lite. If your batteries are Flooded (easily removable cell caps), then, Flooded 2 may be a good start for Absorb voltage, and perhaps for Float V, but probably a bit too low for EQ voltage ... YMMV. One benefit of a Standard Classic, with the MNGP display, is that you can set all of those charge voltages in increments of 0.1 V. The Local App, also allows this setting capability, plus much more.