FCI - Legacy Board, Wiring Help

I have an old 4 zone FCI board, where there are 2 wires per zone. The board went bad, so I am replacing with this unit: http://www.buyfirealarmparts.com/shop/panels/fci/fci-clp-4r.html

The new unit has 4 wires per zone, but I cannot find a manual or schematic. For each of the 4 zones, there are 4 terminals labeled 1, 2, 3, 4. Can anyone explain what each of these terminals correspond to and how they should be wired to my fire alarm pulls? More specifically, how do I map my old 2 wire per zone setup to these 4 terminals.

You can find more detailed pictures of the board on ebay:
http://www.ebay.com/itm/FCI-FIRE-ALARM-CONTROL-BOARD-4-ZONE-/251462673669?pt=BI_Security_Fire_Protection&hash=item3a8c57e505&nma=true&si=MUf1EfEfY1EjNUwW4BtStf4DJu8%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

It’s probably setup so you can do Class A or class B wiring. Try one zone on the bench & see if it works.