Wiring Transmission Cables; Types Of Control Cables - Mitsubishi Electric PUMY-P36 Manuel D'installation

6. Electrical work
L1 L2 GR M1 M2 S M1 M2 S
TB1 TB3 TB7
A B
(For transmission wires)
A Power source C Screw on the electrical component box (TB3)
B Transmission line D Screw on the electrical component box (TB7)
Fig. 6-1

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
Maximum wiring length Within 200 m [656 ft]
Shielding wire (2-core) CVVS, CPEVS or MVVS
Cable diameter 0.5 to 1.25 mm
When 10 m [32 ft] is exceeded, use cable with
Remarks
wiring.
* Connected with simple remote controller.
sary.)
■ 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.
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).
f. Connect the terminal S on the terminal block for central control for the power supply unit to the ground terminal (
g. Set the address setting switch as follows.
Range
IC (Main) 01 to 50
IC (Sub) 01 to 50
OC 51 to 100
101 to 150
151 to 200
MA R/C
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
+L
1
1
,
1
If the length exceeds 10 m [33 ft], use a 1.25 mm
calculation of the maximum length and overall length.
2 MA Remote controller
1
C
D
accessory
(For power supply wires)
accessory
2 [AWG 16]
2 [AWG 20 to AWG 16]*
sequence with the IC (Main)
* The address automatically becomes "100" if it is set as "01 - 50".
Set at an IC (Main) address within the same group plus 100
Set at an IC (Main) address within the same group plus 150
+L +L and L +L +L +L and L +L +L
2 3 4 1 2 3 5 1 2
and L +L and L +L and L +L and L
3 4 3 5 2 6 7
+ , 10 m [33 ft] (0.5 to 1.25 mm
2 3 4
+L +L +L and L +L +L +L
1 2 3 4 1 2 6
and L +L and L +L and L
1 3 4 2 6
and m +m +m and m +m +m +m
1 2 3 1 2 3 4
(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
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:
system transmission line to this terminal bed (TB1B). If the transmission
3. MA Remote control cables
Cable diameter
Remarks
* Connected with simple remote controller.
2
Outdoor unit controller
Indoor unit controller
Remote controller
Setting Method
+L 500 m [1640 ft] (1.25 mm 2 [AWG16] or more)
6 7
200 m [656 ft] (1.25 mm 2 [AWG16] or more)
2 [AWG20 to AWG16])
2 [AWG16] shielded wire. The length of this section (L
500 m [1640 ft] (1.25 mm 2 [AWG16] or more)
7
200 m [656 ft] (1.25 mm 2 [AWG16] or more)
7
200 m [656 ft] (0.3 to 1.25 mm 2 [AWG20 to AWG16])
Sheathed 2-core cable (unshielded) CVV
0.3 to 1.25 mm 2 [AWG 22 to AWG 16] (0.75
to 1.25 mm 2 [AWG 18 to AWG 16])*
Within 200 m [656 ft]
Symbol Allowable number of controllers
OC
1 to 9 units per 1 OC
IC
1 to 12 units per 1 OC
RC MA Maximum of 2 per group
) in the electrical component box.
) should be included in the
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