... type 4.ODM, CE&RoHS ceiling concealed fan coil unit ducted fan coil unit terminal fan coil unit ac unit for apartment Specifications1 ... place.4.inverter type, saving more 45% energy than traditional fan coil unit. General Parameter:Air flow(m3/h): 340~2380Cooling ... : 1. 2 pipe, 4 pipe optional 2. 220V, 230V, 50HZ, 60HZ, optional3. the unit without electric heating, with electric heating optional.