11
6. Electrical work
6.3. Wiring transmission cables
1
Types of control cables
1. Wiring transmission cables
Types of transmission cable
Shielding wire (2-core) CVVS, CPEVS or MVVS
Cable diameter
More than 1.25 mm
2
[AWG 16]
Maximum wiring length
Within 200 m
[656 ft]
01(75HPRWHFRQWUROFDEOHV
.LQGRIUHPRWHFRQWUROFDEOH
Shielding wire (2-core) CVVS, CPEVS or MVVS
Cable diameter
0.5 to 1.25 mm
2
[AWG 20 to AWG 16]*
Remarks
When 10 m
[32 ft] is exceeded, use cable with
WKHVDPHVSHFL¿FDWLRQVDVWUDQVPLVVLRQOLQH
wiring.
* Connected with simple remote controller.
M1
S
M2
B
A
C
M1
S
M2
TB3
TB1
TB7
D
L1 L2 GR
&RQWUROER[DQGFRQQHFWLQJSRVLWLRQRIZLULQJ
(Fig.
6-1)
1. Connect the wiring between the outdoor unit and the indoor unit to the trans-
mission terminal block (TB3) of the outdoor unit.
Connect the wiring between the outdoor unit and the centralized control system
to the transmission terminal block (TB7) of the outdoor unit.
When using shielded wiring, connect the ground of the shielded wiring to the
shield terminal (S) of the terminal block (TB3) or (TB7).
If the connection of the outdoor unit’s transmission power supply connector
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terminal block (TB7) to the screw (
D
) using the included lead wire.
* The shield (S) terminal of the transmission terminal block (TB3) is connected to
the ground (
C
) when the unit is shipped from the factory.
2. Conduit mounting plates are being provided. Pass the power supply and
transmission wires through the appropriate knock-out holes, then remove the
knock-out piece from the bottom of the terminal box and connect the wires.
3. Fix power source wiring to terminal box by using buffer bushing for tensile force
(PG connection or the like).
Caution:
1HYHUFRQQHFWWKHWUDQVPLVVLRQOLQHIRUWKHEUDQFKER[RUWKHFHQWUDOFRQWURO
system transmission line to this terminal bed (TB1B). If the transmission
OLQHVDUHFRQQHFWHGWKHLQGRRUXQLWWHUPLQDOEORFNEUDQFKER[WHUPLQDO
EORFNRUFHQWUDOL]HGFRQWUROWHUPLQDOEORFNFRXOGEHGDPDJHG
Fig. 6-1
3. MA Remote control cables
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Sheathed 2-core cable (unshielded) CVV
Cable diameter
0.3 to 1.25 mm
2
[AWG 22 to AWG 16] (0.75
to 1.25 mm
2
[AWG 18 to AWG 16])*
Remarks
Within 200 m [656 ft]
* Connected with simple remote controller.
2
:LULQJH[DPSOHV
&RQWUROOHUQDPHV\PERODQGDOORZDEOHQXPEHURIFRQWUROOHUV
1DPH
Symbol
Allowable number of controllers
Outdoor unit controller
OC
±
Indoor unit controller
IC
380<31.08
1 to 9 units per 1 OC
380<+31.08
380<31.08
1 to 12 units per 1 OC
380<+31.08
380<31.08
Remote controller
RC
MA
Maximum of 2 per group
&21'8,73/$7(
accessory
¡NQRFNRXWKROH
(For transmission wires)
¡NQRFNRXWKROH
(For power supply wires)
&21'8,7:$6+(5
accessory
([DPSOHRIDJURXSRSHUDWLRQV\VWHPZLWKPXOWLSOHRXWGRRUXQLWV6KLHOGLQJZLUHVDQGDGGUHVVVHWWLQJDUHQHFHV
-
sary.)
([DPSOHVRI7UDQVPLVVLRQ&DEOH:LULQJ!
■
M-NET Remote Controller (Fig. 6-2)
■
MA Remote Controller (Fig. 6-3)
<Wiring Method and Address Settings>
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.
E 8VHIHHGZLULQJWRFRQQHFWWHUPLQDOV0DQG0DQGWKHJURXQGWHUPLQDORQWKHWUDQVPLVVLRQFDEOHWHUPLQDOEORFN7%RIHDFKRXWGRRUXQLW2&WRWHUPLQDOV00
and terminal S on the transmission cable 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 central control (TB7) for the outdoor unit (OC).
H 7KHMXPSHUFRQQHFWRU&1RQWKHFRQWUROSDQHOGRHVQRWFKDQJH
f. Connect the terminal S on the terminal block for central control for the power supply unit to the ground terminal (
) in the electrical component box.
g. Set the address setting switch as follows.
8QLW
Range
Setting Method
IC (Main)
01 to 50
8VHWKHPRVWUHFHQWDGGUHVVZLWKLQWKHVDPHJURXSRILQGRRUXQLWV
IC (Sub)
01 to 50
8VHDQDGGUHVVRWKHUWKDQWKDWRIWKH,&0DLQIURPDPRQJWKHXQLWVZLWKLQWKHVDPHJURXSRILQGRRUXQLWV7KLVPXVWEHLQ
sequence with the IC (Main)
OC
51 to 100
8VHWKHPRVWUHFHQWDGGUHVVRIDOOWKHLQGRRUXQLWVSOXV
* The address automatically becomes “100” if it is set as “01 - 50”.
01(75&0DLQ
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
MA R/C
±
8QQHFHVVDU\DGGUHVVVHWWLQJ1HFHVVDU\PDLQVXEVHWWLQJ
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.
<Permissible Lengths>
1
M-NET Remote controller
0D[OHQJWKYLDRXWGRRUXQLWV/
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
3
+L
5
and L
1
+L
2
+L
6
+L
7
500 m [1640 ft] (1.25 mm
2
[AWG16] or more)
0D[WUDQVPLVVLRQFDEOHOHQJWK/
1
and L
3
+L
4
and L
3
+L
5
and L
2
+L
6
and L
7
200 m [656 ft] (1.25 mm
2
[AWG16] or more)
5HPRWHFRQWUROOHUFDEOHOHQJWK
Ɛ
1
,
Ɛ
2
+
Ɛ
3
,
Ɛ
4
10 m [33 ft] (0.5 to 1.25 mm
2
[AWG20 to AWG16])
If the length exceeds 10 m [33 ft], use a 1.25 mm
2
[AWG16] shielded wire. The length of this section (L
8
) should be included in the
calculation of the maximum length and overall length.
2
MA Remote controller
0D[OHQJWKYLDRXWGRRUXQLW01(7FDEOH/
1
+L
2
+L
3
+L
4
and L
1
+L
2
+L
6
+L
7
500 m [1640 ft] (1.25 mm
2
[AWG16] or more)
0D[WUDQVPLVVLRQFDEOHOHQJWK01(7FDEOH/
1
and L
3
+L
4
and L
2
+L
6
and L
7
200 m [656 ft] (1.25 mm
2
[AWG16]
or more)
5HPRWHFRQWUROOHUFDEOHOHQJWKP
1
and m
1
+m
2
+m
3
and m
1
+m
2
+m
3
+m
4
200 m [656 ft] (0.3 to 1.25 mm
2
[AWG20 to AWG16])
C
Screw on the electrical component box (TB3)
D
Screw on the electrical component box (TB7)
A
Power source
B
Transmission line
