Vrf Network System - Fujitsu AIRSTAGE J-IIIL Design & Technical Manual

1-2. VRF network system

¢ Definition
VRF network
VRF network means global VRF network.
Network segment (NS)
Network segment (NS) means each networks shut off by Signal amplifier.
Network segments mean divided block which has been connected with Signal amplifier within
conditions that required Signal amplifier.
When a Signal amplifier is installed, network is divided into two network segments.
Element
Generic name for indoor unit, outdoor unit, Signal amplifier, TPC, CRC, and so on in network
segment.
Terminal resistor
Terminal resistor means resistor should set in network segment.
¢ Overview
• VRF network system should keep both of number of unit and wiring length. When system exceeds
either number of unit or wiring length, the system should be divided.
• Different VRF series may not coexist within the same network.
1
34
Signal
amplifier
63
64
Signal
amplifier
64
1-2. VRF network system
2 3
26 27 28
1 2 3 4
1 2 3 4
1 2 3 4
4 5 6
Transmission line : within 1,640 ft (500 m)
29 30 31
62
64
62
63
5 62
- (06-4) -
25
Network
segment 1
32 33
Signal Network
64 units
amplifier segment 2
Network
64 units
segment 3
Network
63
64 units
segment 4
1. System design