SYSVRF2 CASSETTE MINI IM

12
Thickness of main power wire, switch capacities
indoor unit
Total capacity
of Indoor units
< 10A or
singel unit
Minimum wire thickness
(mm
2
[AWG])
Main Power Wire Ground wire
Switch(A)
Capacity Fuse
Breaker
for wiring
(A)
Breaker for current leakage
1.3[16] 15 15 15A 10mA 0.1sec. or less
2.0[14] 15 15
15A 10mA 0.1sec. or less
3.3[12] 20 20
15A~10A
20A~15A
30A~20A
5.2[10]
40A~30A
50A~40A
8.3[8]
13.3[6]
30
40
50
15
20
30
40
50
15
30
40
50
1.3[16]
2.0[14]
3.3[12]
5.2[10]
8.3[8]
13.3[6]
20A 10mA 0.1sec. or less
30A 10mA 0.1sec. or less
40A 10mA 0.1sec. or less
50A 10mA 0.1sec. or less
Table 9-2
NOTE : The chart shown is only for reference. Installation must conform with local regulations.
Fig.9-3
Use copper core PVC insulated sheathed shielding twisted cord
(RVVSP) as communication wire for optimum communication.
Do not wire or plug in terminal blocks with electricity.
Communication between the indoor unit and outdoor unit uses
RS485 communication. The interface is "P, Q, E".
(Refer to Fig. 9-3)
The shielding layer of the communication wire for indoor unit and
wired controller should be connected by hand. Finally, it will be
grounded at a single point.
The shielding layer of the communication wire for the indoor unit
and outdoor unit should be connected by hand and then ground
at the outdoor unit side at a single point.
Complete wiring as per the wiring diagram.
Communication wires must not form a closed loop.
Do not tie communication wires, refrigerant pipe and power cable
together when the communication wires are parallel to the power
wire.
A distance of more than 51 mm should be maintained, to prevent
communication interference.
Use insulated rubber tape to bind bare copper wire to prevent
communication failures caused by short circuit.
9.4 Communication Wire Connection
To outdoor/intdoor
unit communication
To wired
controller
comm. bus
P Q E X1 X2