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Navien NCB-H 240 - Honeywell T-Stats

I am installing a Navien NCB-H and I would like to use 2 Honeywell zone valves. Looking at the wiring diagram I don’t see “TT.”
im going to assume I can wire one yellow to normally Open and the other yellow to “common” I don’t know where to connect the red wires as I didn’t see a end switch for this. Any Information? Thanks!