Thanks Nick.
Yes, there is 3 sets of fan, the first one is the usual mode. the other 2 are boost mode. One is connect to the bathroom, and the 3rd one is in the kitchen.
There is a thermostat at the wall that is connect to it, which has a Summer mode and Winter mode that can be switched on and off. My understanding is that when Summer mode is on, the cooling will kick in when the temperature reach the set point. On the other hand, if the Winter mode is selected, this will switch on the heat recovery mode.
Please find the user guide and installation manual below for your information.
MRXBOXAB-ECO5-AECV.pdf MRXBOX-ECO5-AECV User Guide.pdf