Hi Eugene
yes, you'll need a Y cord (stereo 1/4" to 2 x mono 1/4") to connect the volume pedal to Eclipse. Pedal 1 is assigned by factory default to IN level (SEND) on many algorithms, so a better choice would be to go for Pedal 2 input on the rear panel.
You first need to patch the Pedal to an External #. These are placeholders you will use for your remote control tasks.
Press SETUP > EXTERNAL > SETUP again > EXT#5
I advice to use EXT 5 or higher because the first ones have factory assignments that may be in conflict with what you want to do.
Select Ext #5 SOURCE as : PEDAL 2
To patch the pedal to system wet/dry mix:
-press LEVELS
-press & hold WET/DRY key
-a wet/dry mod screen shows up. Press <MODULATE>
-choose your EXT#5 and the pedal 2 will remote your wet/dry mix.
Please refer to the User Manual on more details about Parameters Modulation via MIDI and hardware controllers.
all the best
Italo