i installed a mcquay model fcv036bmgl water source air handler in my home that i removed from a building remodel. i have a dam above my house that i burried a 2" water line to my basement from to use as an open loop system. i have it up and running but want to install a zone valve to the inlet side of my water source, but the wiring schematic on the handler got wet and is mostly unreadable. it has a mark IV 056792401 board on it. could anyone tell me how to tie the zone valve in?