Scotp73
Oct 17, 2008, 02:05 PM
I am going to be installing the Z-wave thermostat and see that it needs a common "C". My present system is just the 4 wire hookup. I do have the blue wire already run just not used at this moment. On the HVAC Control board where the thermostat wires connect is a "C" and in the manule it shows it running to the AC unit. I also see right behind that there is a post connector with "COM" and under that is one listed as "24V" and thoes are running to a transformer. Where should I connect the Blue wire too on the control Board? The "C" on the board or to the 24v before the transformer? The Board is a Nordyne 624631-a if that helps.
Thanks in avance for all your help.
I just rather ask before hooking up an brakeing it due to hooking it up wrong.
Thanks in avance for all your help.
I just rather ask before hooking up an brakeing it due to hooking it up wrong.