Mitsubishi Electronics PKA-A-GA Fig. 6-1, 6.1. Indoor unit (Fig. 6-1)

7
Fig. 6-1
6.1. Indoor unit (Fig. 6-1)
1. Remove the corner box.
2. Install each wire into the unit.
3. Open the front grill, remove 1 tapping screw and remove the terminal block cover.
ATerminal block cover
4. Connect each wire properly to the terminal block.
•In consideration of future servicing, please leave some leeway for the wiring length.
5. Put all the parts back the way they were.
6. Use a clamp from the bottom of the electric parts box to fasten each wire.
sFix power source wiring to control box using buffer bushing for tensile force.
(PG connection or the like.)
A means for the disconnection of the supply with an isolation switch, or similar de-
vice, in all active conductors shall be incorporated in the fixed wiring.
BTerminal block for Indoor/outdoor connecting
CTerminal block for power supply (separate indoor/outdoor unit power supplies, K-control ap-
plication)
DEarth point
EClamp
FTerminal block for remote controller (Only for PKA-A·GA)
GConduit plate
HBush (Purchased locally)
ILock nut (Purchased locally)
JConnector (Purchased locally)
KConduit (Purchased locally)
S2S3S1 12
L2GRL1
B
C
D
E
F
G
A
6. Electrical work
6.1.1. Indoor unit power supplied from outdoor unit (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
S1
S2
L1
L2
GR
1
2
S1
S2
S3
S3
AB
C
D
E
F
G
S1
S2
L1
L2
GR
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
AB
C
E
FF
GG
D
Simultaneous twin system
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
DIndoor unit/outdoor unit connecting cords
ERemote controller (Only for PKA-A·GA)
FIndoor unit
GIndoor unit earth
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
*1.Max. 50 m, 165 ft
*2.The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft <Only for PKA-A·GA>
*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. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.
4. Install an earth longer than other cables.
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
DIndoor unit/outdoor unit connecting cords
ERemote controller (Only for PKA-A·GA)
FIndoor unit
GIndoor unit earth
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit *1
Indoor unit earth
Remote controller-Indoor unit *2
Indoor unit L1-L2 *3
Indoor unit-Outdoor unit S1-S2 *3
Indoor unit-Outdoor unit S2-S3 *3
Remote controller-Indoor unit *3
PKA
–
1A
15A
–
–
3 × AWG16 (polar)
1 × Min. AWG16
2 × AWG22 (Non-polar)
–
AC 208/230 V
DC24 V
DC12 V
Circuit
rating
Wiring
Wire No. × size
KJGH I
BG79U874H01_en 05.11.30, 9:237