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1. Wiring transmission cables
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Kind of remote control cable
Shielding wire CVVS, CPEVS or MVVS
Cable diameter
0.5 to 1.25 mm
2
Remarks
When 10 m is exceeded, use cable with the same
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3. MA Remote control cables
Kind of remote control cable
Sheathed 2-core cable (unshielded) CVV
Cable diameter
0.3 to 1.25 mm
2
(0.75 to 1.25 mm
2
)*
Remarks
Within 200 m
* Connected with simple remote controller.
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a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, and IC-IC wiring intervals.
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and terminal S on the transmission cable terminal block of the indoor unit (IC).
c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the same group to the terminal
block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for centralized control (TB7) for the outdoor unit (OC).
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f. Connect shield ground of the indoor units transmission line to the shield (S) terminal of (TB3) and also connect (S) terminal to the screw (
E
or
F
) using attached lead
wire.
Connect shield ground of the line between outdoor units and the centralized control system transmission line to the shield (S) terminal of (TB7).
g. Set the address setting switch as follows.
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Range
Setting Method
IC (Main)
01 to 50
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IC (Sub)
01 to 50
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be in sequence with the IC (Main)
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51 to 100
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* The address automatically becomes “100” if it is set as “01 - 50”.
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101 to 150
Set at an IC (Main) address within the same group plus 100
01(75&6XE
151 to 200
Set at an IC (Main) address within the same group plus 150
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–
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h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
i. When connecting a PWFY unit
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For details, refer to the installation manual for the PWFY unit.
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M1
S
M2
D
A
E
M1
S
M2
L
N
TB3
TB1
TB7
F
B1 B2
TB1B
C
B
A
Power source
B
Power supply for branch box
C
Screw on the electrical component box
D
Transmission line
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1. Connect the indoor unit transmission line to transmission terminal block (TB3), or
connect the wiring between outdoor units or the wiring with the centralized control
system to the centralized control terminal block (TB7).
When using shielded wiring, connect shield ground of the indoor unit transmission
line to the screw (
E
or
F
) and connect shield ground of the line between outdoor
units and the centralized control system transmission line to the shield (S) terminal
of the centralized control terminal block (TB7) shield (S) terminal. In addition, in
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system should also be connected to the screw (
E
or
F
) using attached lead wire.
2. The terminal bed (TB1B) is for supplying power to the branch box (220
~
240
VAC. max 6 A).
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M1
S
M2
M1
S
M2
TB3
TB7
B1 B2
TB1B
C
B
E
F
D
L1 L2 L3 N
TB1
A
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E
Screw on the electrical component box
F
Screw on the electrical component box
2
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Symbol
Allowable number of controllers
Outdoor unit controller
OC
–
Indoor unit controller
M-IC
380<3
1 to 9 units per 1 OC
380<3
1 to 10 units per 1 OC
380<3
1 to 12 units per 1 OC
A-IC
380<3
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380<3
380<3
Branch box
–
–
0 to 2 units per 1 OC
Remote controller
RC
01(75&
Maximum of 12 controllers for
1 OC (Can not be connected
if Branch box is used.)
MA-RC
Maximum of 2 per group
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as an indoor unit’s capacity or each unit’s equivalent power consumption.
