I think that if you equalize, you should disconnect your refrigeration, Max.

Get a temporary 12v (or two), connect that to the house panel (or whatever you need to); and then have the charger do its thing.

I wouldn't be running 17V through your system, For examplbe maybe the motor on the compressor is okay, but if one of the components of the system or controls doesn't like it -- you'll be a lot sorrier.

If you have to, get some ice or dry ice... and go without DC power.

Your instruments, your computer, you whatever really is better-off not on. Also, you really won't have an equalization charge if you are draining-off the power. The key to equalization is what the batteries actually get. (For example, we set our Mastervolt at a rest of about .4-.6 volts higher because with the various pieces of equipment on when were just recharging or floating -- they need to have the controller set at the battery, not the panel.)