Can I let the IR embedded in my Smarther AC with Netatmo unconfigured in case I don't need it (example: installation with IR emitters were communication is through Zigbee)?

The IR embedded on the Smarther AC with Netatmo can be disabled or can be used in parallel with the IR emitter to control one additional A/C unit. In case you don't need it, you can simply skip its configuration during the commissioning.