Fujitsu Airstage J-II Series Design & Technical Manual page 607

„ WIRING RULES
„
● In the following cases, Signal Amplifier is required.
„
1) When the total length of the transmission line exceeded 1,640 ft. (500 m)
AB+BC+BD+DE+EF > 1,640 ft. (500 m) (Fig. 1)
2) When the total number of units *1 is over 64.
● Transmission line length between each unit*1 : MAX 1,312 ft.(400 m)
„
● Total transmission line length: MAX 11,811 ft. (3,600 m)
„
AB+BC+BD+DE+EF+EG+GH < 11,811 ft. (3,600 m) (Fig. 2)
Terminal
resistor
Outdoor unit
B
A
D
Indoor unit
When AB+BC+BD+DE+EF>1,640 ft.
(500 m) :Signal Amplifier is required.
*1: Refer detail Meaning of unit on 1-2 VRF NETWORK SYSTEM.
Fig. 1
Transmission line
System
C
Controller
E
F
Touch
Panel
Controller
- (06 - 43) -
Fig. 2
Terminal
resistor
Outdoor unit
A
Transmission line
B
D
Terminal resistor
E
G
NS 3
Signal Amplifier
Indoor unit
NS 1
Touch
C
Panel
Controller
NS 2
System
F
Controller
NS 4
H