It seems the Tracer AN chargers are primarily lead acid oriented units but can be made to do Lithium.
It looks like it only does Gel, Sealed, Flooded or User modes - unless maybe your model has a built in lithium-ion mode (different to LiFePo4 mode)?
I'd suggest battery type = "user" is likely the one you'll need.
So assuming Li-ion (not LiFePo4) & you want longer life settings for your cells, you'd be targetting 4.1V/cell (16.4V for the pack) top of charge full setting.
I'd suggest you should set all these to 16.4V: Charging Limit Voltage (ie CV value), Equalisation Charging Voltage, Boost Charging Voltage, Boost Recon Charging Voltage
(ie you don't ever want the voltage higher than this, but you do want a charge current tail-off)
Like Korishan said, float should be ~0.1V/cell under that ie 16.0V for the pack & I'd suggest you should set Float Charging Voltage to that.
Re settings for Boost Duration and Equalisation Duration, these would sort of mimic charge current tail-off, ie "cut off CV charge when current drops to small value". So you'd set these to maybe 30-60 mins - this would hold the "CV voltage" at 16.4V for a while.
Maybe set it up & watch it in action & see how long it takes before the current has dropped off at 16.4V & trim back the Boost Duration and Equalisation Duration times to that. This one's not critical.
Hopefully you also have a BMS doing balancing for you too?