Wiring Transmission Cables - Mitsubishi Electric PUMY-P60NKMU1 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
B Transmission line D Screw on the electrical component box
Fig. 6-1

6.3. Wiring transmission cables

1 Types of control cables
1. Wiring transmission cables
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.
E ample of a group operation system with multiple outdoor units (Shielding wires and address setting are neces-
sary.)
<E amples of Transmission Cable Wiring>
M-NET Remote Controller (Fig. 6- )
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
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
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 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
6. . Control bo and connecting position of wiring
(Fig. 6-1)
1. Connect the branch box 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 branch box transmis-
sion line to the screw (C or D) and connect shield ground of the line between
outdoor units and the central control system transmission line to the shield (S)
terminal of the centralized control terminal block (TB7) shield (S) terminal. In
centralized control system should also be connected to the screw (C or D) using
attached lead wire.
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:
Never connect the transmission line for the branch bo or the central control
system transmission line to this terminal bed (TB1B). If the transmission
lines are connected, the indoor unit terminal block, branch bo terminal
block or centrali ed control terminal block could be damaged.
3. MA Remote control cables
Cable diameter
Remarks
* Connected with simple remote controller.
2 Wiring e amples
Outdoor unit controller
Indoor unit controller
Remote controller
Setting Method
+L 500 m [1640 ft] (1.25 mm 2 [AWG16] or more)
6 7
2
200 m [656 ft] (1.25 mm [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 (0.75 to 1.25 mm
Within 200 m
Symbol Allowable number of controllers
OC
IC 1 to 10 units per 1 OC
RC MA Maximum of 2 per group
) in the electrical component box.
) should be included in the
8
2 )*
11