I Just installed an older intertherm mac 2450, I am only using the furnace for heat, I now need to wire the thermostat wires from the furnace to the thermostat, not having much luck finding anything useful on line.
It would be great if I could get some help on this one.

Thanks

Have you found the wires in furnace to connect tstat wires to?
If so one wire goes to W on tstat the other probably red or pinkish-red goes to R post om tstat
2 wires is all you need