Actually i think you may be able to do both heating and cooling. You need to operate in mode "2: Relay J1 as alarm output; SSR PID controlled 12 Volt output. Know as No Contact controlled". Where the SSR would be pid controlled and drive your heating element, and then when your process value became to high the alarm output would trigger a cooling element. There are parmeters that would have to be adjusted. Also you are going to need a SSR for your pid output, and more than likely and interpolating relay for the alarm output (it is only good for 3 amps). If you need more assistance with parameter specifics i would be glad to assist you.