Mitsubishi Electric City Multi PFFY-W20 Manuel D'installation page 6

[Fig. 8.3.4]
A
M1 M2 S
B
D
E
C
[Fig. 8.6.1]
SW21
6
Terminal block
A
Round terminal
B
Shield wire
C
The earth wire from two cables are connected together to the S terminal. (Dead-end connection)
D
Insulation tape (To keep the earth wire of the shielded cable from coming in contact with the transmission terminal)
E
<Indoor controller board>
8.3
8.6
SW14 SW12 SW11