QZCC cassette unit has been designed to generate an airflow with a "coanda effect". The unit is suitable for installation in a suspended ceiling. Air intake is from the bottom while the air supply is parallel to the ceiling. The "coanda" effect creates excellent circulation of the air inside the room. Every unit can be supplied with 1 coil (2 pipe system) and possibly an electric heating element, or with 2 coils (4 pipe system) with one or two rows. A condensate pump may also be supplied as an accessory. In addition to the conventional temperature and speed control systems, there is also the possibility of automatic fan speed change and the management of more than one unit with a single control.