In the "Video" function of NetEco, you can perform operations such as (). (Multiple Choice)

When the NetCol5000-A indoor unit and the outdoor unit are not installed separately, the refrigerant line is ().

The higher the battery charging current is the better.

Which is an optional component of for NetCol5000-A?

After the NetCol5000-C is set to the hot backup function, no backup machine is running, and a single unit adjusts the water valve opening according to the detected actual temperature to respond to the demand.