By default, UPnP port forwarding is set to Off. To configure UPnP port forwarding: Browse to My Fiber; then select Network from the Navigation menu ( ). From the Network settings pane, select Advanced; then click Ports to display the Ports tab.
Variable refrigerant flow. Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented in Japan by Daikin company in 1982. Like ductless minisplits VRFs use refrigerant as the cooling and heating medium.
Furthermore, unlike most traditional HVAC systems, one condensing unit can handle more than one evaporator, each of which can be individually controlled by its user. This is done through the use of shared refrigerant. In a heat pump run VRV/VRF system, heating or cooling can be provided to the space.In a heat recovery VRV/VRF system, heating and cooling can be provided to variable spaces at the same time.By sharing the refrigerant throughout the system, rooms that need cooling give their heat to the system that in turn uses it to heat a room that needs heating and vice versa.ariable refrigerant volume (VRV) or variable refrigerant flow (VRF) systems are cutting edge mechanical systems with a proven track record.