Electrical Work; Electrical Connection - Mitsubishi Electric PAC-IF013B-E Manuel D'installation

4. Electrical work

4.1. Electrical connection

All electrical work should be carried out by a suitably qualified technician. Failure to
comply with this could lead to electrocution, fire, and death. All wiring should be ac-
cording to national wiring regulations.
Connections should be made to the terminals indicated in the following figures.
Use ring terminals and insulate the wires.
Tighten the screw from the bottom terminals first.
Notes:
1. Do not run the low voltage cables through a slot that the high voltage cables
go through.
2. Do not bundle power cables together with other cables.
3. Bundle cables as Fig. 4.1.1 by using clamps.
4.1.1. Interface unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
A B C
Note:
In accordance with IEE regulations the circuit breaker/isolating switch located on the outdoor unit should be installed with lockable devices (health and safety).
Interface unit - Outdoor unit
Interface unit - Outdoor unit earth
Interface unit - Outdoor unit S1-S2
Interface unit - Outdoor unit S2-S3
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Interface unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
Interface unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)
3. Install an earth longer than other cables.
4.1.2. Separate interface unit/outdoor unit power supplies
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
A B C
Note:
In accordance with IEE regulations the circuit breaker/isolating switch located on the outdoor unit should be installed with lockable devices (health and safety).
If the interface and outdoor units have separate power supplies, refer to the table
below.
Interface unit controller connector
(CNS2) connection change
Outdoor unit DIP switch settings (when
using separate interface unit/outdoor
unit power supplies only)
D F
L
N
TB6
S1 S1
S2 S2
S3 S3
E
*3 3 × 1.5 (polar)
*3 1 × Min. 1.5
*4 230 V AC
*4 24 V DC
F
D
TB6
L
L
G B C
N
N
S1 S1
S2 S2
S3 S3
E
Separate power supply specifications
Disconnected
ON 3
OFF 1 2 (SW8)
Set the SW8-3 to ON.
INPUT
Remote controller
thermistor
A Outdoor unit power supply
B Earth leakage breaker *1, *2
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit
*1 If the installed earth leakage circuit breaker does not have a function to protect over-current,
install a breaker with that function along the same power line.
*2. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth
leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductors of the
supply.
*3. Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
*4.The values given in the left table are not always measured against the ground value.
A Outdoor unit power supply
B Earth leakage breaker *1, *2
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit
G Interface unit power supply
*1 If the installed earth leakage circuit breaker does not have a function to protect over-current,
install a breaker with that function along the same power line.
<Photo 4.1.2>
OUTPUT Power cables
<Fig. 4.1.1>
CNS2
7