Electrical Work - Mitsubishi Electric PAC-IF032B-E Installation And Operation Manual

4. Electrical work

INPUT
Remote controller
Thermistor
<1 phase>
Power
Earth
supply
leakage
~/N
circuit
230V
breaker
50Hz
<3 phase>
Power
ntrol
Earth
supply
leakage
3N~
circuit
400V
breaker
50Hz
Electrical connections 1 phase/3 phase
FTC2B - Outdoor unit
FTC2B - Outdoor unit earth
FTC2B - Outdoor unit S1 - S2
FTC2B - Outdoor unit S2 - S3
OUTPUT Power cables
<Fig. 4.1.1>
Wiring for FTC2B
Outdoor unit
Wiring
S1
L
circuit
breaker S2
N
or
S3
Isolating
switch
Outdoor unit
L1
Wiring
L2
circuit
S1
breaker
L3
or
S2
Isolating N
switch
S3
<Fig. 4.1.2>
*2 3 × 1.5 (polar)
*2 1 × Min. 1.5
*3
*3
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. It will also invalidate
product warranty. All wiring should be according to national wiring regulations.
Connections should be made to the terminals indicated in the following figures de-
pending on the phase.
When the wires are wired to adjacent terminals use ring terminals and insu-
late the wires.
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.
FTC2B powered via outdoor unit
FTC2B
*1 If the installed earth leakage circuit breaker does not have an over-current
protection function, install a breaker with that function along the same power line.
*2 Affix label A that is included with the manuals near each wiring diagram for
L
FTC2B and outdoor units.
N
Note:
In accordance with IEE regulations the circuit breaker/isolating switch located on Power
To control
supply
the outdoor unit should be installed with lockable devices (health and safety).
S1
board
3N~
S2 400V
50Hz
S3
TB6
FTC2B
L
N
To control
board
S1
S2
S3
TB6
*1. A breaker with at least 3.0 mm contact separation in each pole shall be pro-
vided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase con-
ductors of the supply.
*2. Max. 45 m
AC230V
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
DC24V
*3. The values given in the table above are not always measured against the
ground value.
Notes:
1. Wiring size must comply with the applicable local and national codes.
2. FTC2B/outdoor unit connecting cords shall not be lighter than polychloro-
prene sheathed flexible cord. (Design 60245 IEC 57)
3. Install an earth longer than other cables.
Outdoor unit
L1
Wiring
Earth L2
circuit
leakage
breaker
L3
circuit
or
breaker
Isolating N
switch
FTC2B
L
N
To control
board
S1 S1
S2
S2
S3 S3
TB6
9