Fujitsu AirStage AJH108GALH, Installation Manual, Page: 15 / 236

En-14
Transmission wiring speci fi cations 6. 5. 1.
Follow the speci fi cations below for the transmission cable.
Use Size Wire type Remarks
Transmission
cable
0.33mm
2
22AWG LEVEL 4 (NEMA)
non-polar 2core, twisted pair
solid core diameter 0.65mm
LONWORKS
®
com-
patible cable
Wiring rules 6. 5. 2.
Basic wiring rules (1)
Total transmission line length: MAX 3600 m (A+C+D+E+F+G+H+J+K+N+W ≤ 3600)
Transmission line length between each unit : MAX 400 m
Transmission line length between outdoor units in a refrigerant system MAX 18 m (L
≤ 18 m , M ≤ 18 m)
Be sure to set 1 terminal resistor in a network segment..
Indoor unit
Transmission line
RB unit
Terminal registor
System controller
Touch panel controller
A (a to b)
K N
W
J
L
M
C D
E
H
G
F
(a)
(b)
In the following cases, Signal Ampli fi er is required. (2)
When the total length of the transmission line exceeded 500 m
(A+C+D+E+F+G+H+J+K+N
≥ 500 m)
When the total number of unit is over 64.
C
*P+C+D+E+J+K+N ≤ 500 m, Q+F+G+H ≤ 500 m
Signal ampli fi er
Terminal resistor
NS 1
F
H
G
K
J
E
W N
NS 2
NS 3
D
(a)
(b)
(c)
P (a to c)
Q (c to b)
The transmission cable connects indoor units belonging to the same RB group. The
transmission cable cannot be used to connect indoor units belonging to different RB
groups.
Transmission line
Refrigerant pipe
RB group1 RB group1 RB group 2 RB group 2
Good Prohibited
RB unit
(multi type)
Transmission line
Refrigerant pipe
RB unit
(multi type)
Good
Prohibited
RB
group1 RB
group 2 RB
group 3,4 RB
group 3,4 RB
group1 RB
group 2
If there are more than 321 units(*1) within the network system, a signal ampli fi er •
(with the fi lter mode: on) must be installed between the master outdoor units. See
the Signal Ampli fi er Installation Manual and Design & Technical Manual for more
information.
Signal Ampli fi er
(Filter mode: on)
Unit* means indoor unit, outdoor unit, Touch Panel Controller and System Con- *1)
troller, Signal Ampli fi er, single split adaptor, Network Convertor etc..
Do not use loop wiring. This may lead to parts damage and erroneous operation.
Enabling/Disabling automatic address setting 6. 5. 3.
You can enable/disable automatic address setting for the indoor unit, RB unit and the
signal ampli
fi er.
To enable automatic address setting for the indoor unit, connect the indoor unit to
outdoor units under the same refrigerant system.(Fig.4)
Example : Disable Automatic Address setting
Refrigerant
system 1
Refrigerant
system 2
Transmission line
Transmission line
Example : Enable Automatic Address setting
Refrigerant
system 1
Refrigerant
system 2
Transmission line
Transmission line
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