Not sure what you are asking but I'll take my best shot at answering.
No, you can not hook the Elk temp sensor to the Zone in a KP2. The temp sensors must be connected to Zones 1-16. The Elk keypad as a thermostat - you should be able to use menu 6 to 'control' a stat, or issue tasks to do things. But I would think you would use your CQC screens to control the stat remotely.