Mitsubishi Electric Mr.SLIM PKH-FAK Serie Manual De Instalación página 7

5. Electrical work
Fig. 5-
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
<For heat pump models>
<For heat pump models>
Set the DIP switch (SW5-3) of the indoor unit control board.
Main indoor
SW5
SW5-1: ON SW5-1: ON
SW5-2: OFF SW5-2: OFF
SW5-3: OFF SW5-3: ON
Indoor unit model
Indoor unit power supply (Heater)
Indoor unit input capacity (Heater)
Main switch/Fuse
Indoor unit power supply (heater)
Indoor unit power supply (heater) earth
Wiring
wire No.× size Indoor unit-Outdoor unit
(mm )
Indoor unit-Outdoor unit earth
2
Remote controller-Indoor unit
Indoor unit (Heater) L-N
Circuit Indoor unit-Outdoor unit 1-2
Indoor unit-Outdoor unit 1-3
rating
Remote controller-Indoor unit
*1 Max.50m
*2 The 10m wire is attached in the remote controller accessory. Max. 500m
Note:
1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC57)
3. Install an earth longer than other cables.
4. For the outdoor unit,the transformer connection must be selected depending on the power supply voltage, 220/230 V or 240 V. (For heat pump models)
5. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
1:1 System
<For cooling only models>
Simultaneous twin system
<For cooling only models>
Set the DIP switch (SW5-3) of the indoor unit control board.
Sub indoor
SW5
SW5-1: ON
SW5-2: ON
SW5-3: OFF
Connect the power line, and control line. (Fig. 5-2)
► Fix power source wiring to control box using buffer bushing for tensile
force. (PG connection or the like.)
• Since the electric box may need to be pulled out for servicing or other occasions,
wires must have enough slack.
• Class 3 grounding work must be conducted (grounding wire diameter: 1.5 mm or
more).
After wiring is completed, reinstall the parts in the reverse order of removal.
Warning:
Wiring should be done so that the power lines are not subject to tension.
Otherwise, heat may be generated or fire may occur.
Terminal block for control lines from the outdoor unit
Terminal block for power supply
Power supply wiring & connection wiring
Cord clamp
Main indoor Sub indoor
SW5-1: ON
SW5-2: ON
SW5-3: ON
PK
~N (single), 50 Hz, 220 - 240 V/60 Hz, 220 V
16 A/16 A
*1 2 × Min. 0.3 mm
2
–
(Non-Polar)
*2 2 × Min. 0.3 mm
2
AC220 - 240 V
DC12 V
–
DC12 V
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit <For heat pump models>
Indoor unit <For cooling only models>
Indoor unit power supply
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Main indoor unit <For heat pump models>
Sub indoor unit <For heat pump models>
Indoor unit power supply
Main indoor unit <For cooling only models>
Sub indoor unit <For cooling only models>
When setting the sub indoor unit, set the
DIP switch (SW5-3) of the indoor unit con-
trol board to ON.
PKH
16 A/16 A
(16 A/16 A)
2 × Min. 1.5 mm
2
1 × Min. 1.5 mm
2
3 × Min. 0.3 mm
–
(Non-Polar)
2 × Min. 0.3 mm
2
AC220 - 240 V
DC12 V
DC12 V
DC12 V
2
7