Does such a thermostat exist? Odd setup with an AC unit feeding a pair of VAVs with heaters. The existing thermostats control the VAV with 2 outputs relay and 2-10 modulating. This original setup had the AC unit running 24/7 as it cooled a computer room and the VAVs were branched off it to feed some offices. Now the computer room is repurposed and they replaced the big computer room ac with a small one just to feed the offices. I need to come up with a way to run the VAVs and heat as they ran before, but when the Tstat is on the cooling side I need to be able to send a call for cooling to the AC unit whereas before the installation assumed constant cooled air.
So I need 3 outputs for cooling / heat function plus fan control.
-cooling relay
-heater relay
-2-10v modulating for VAV damper
And there are 2 thermostats, each running a VAV. Either or both need to be able to command the fan and cooling (I guess a couple pairs of relays would take care of this part)
So I need 3 outputs for cooling / heat function plus fan control.
-cooling relay
-heater relay
-2-10v modulating for VAV damper
And there are 2 thermostats, each running a VAV. Either or both need to be able to command the fan and cooling (I guess a couple pairs of relays would take care of this part)