Electrical Work - Mitsubishi Electric Mr.Slim PSA-RP·KA Installation Manual

6. Electrical work

c
b
a
a 4 × 10 tapping screws
d Terminal block for indoor and outdoor units connector.
b Electrical equipment cover e Grounding cable connector
c Wiring bands f Bushing (for the wire hole)
Fig. 6-1
6.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Indoor unit earth
Remote controller-Indoor unit
Indoor unit (Heater) L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. <For 25-140 outdoor unit application>
Max. 45 m
If 2.5 mm 2 used, Max. 50 m
If 2.5 mm 2 used and S3 separated, Max. 80 m
<For 200/250 outdoor unit application>
Max. 18 m
If 2.5 mm 2 used, Max. 30 m
If 4 mm 2 used and S3 separated, Max. 50 m
If 6 mm 2 used and S3 separated, Max. 80 m
*2. The 10 m wire is attached in the remote controller accessory. Max. 500 m
*3. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC
57)
3. Install an earth longer than other cables.
6.1. Electric wiring (Fig. 6-1)
e
1. Remove the tapping screws a and then remove the electrical equipment cover
d
2. Connect the electric wires securely to the corresponding terminals.
3. Fasten the wires d with the bands c.
• Always ground the wiring (the ground wire diameter must be 1.6 mm or more).
• If the wires contact the pipes, condensation may drip onto them. Make sure that
the wires are properly routed.
• Fasten the power source wiring to the control box using the buffer bushing for tensile
force (PG connection or the like)
• After finishing this work, always reassemble the unit.
f
• For instructions on how to reinstall the air intake grill, see page 6.
Never splice the power cable or the indoor-outdoor connection cable, otherwise
it may result in a smoke, a fire or communication failure.
1:1 System
Simultaneous twin/triple/four system
3 × 1.5 (polar)
*1
1 × Min. 1.5
*1
1 × Min. 1.5
2 × 0.3 (Non-polar)
*2
*3 –
*3 AC 230 V
*3 DC24 V
*3 DC12 V
b.
Warning:
H H H
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cords
F Remote controller
G Indoor unit
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cords
F Remote controller
G Indoor unit
H Indoor unit earth
7