Midea Air Conditioner Installation Manual page 12

Signal wires of indoor
and outdoor units
P
Matched
Resistance
Q
L
N
To indoor power
220-240V~ 50Hz
Power-supply wiring holder
Communication wiring holder
Electric control box cover
Inhalation grating
Outdoor Unit
(All the shielding terminals of the
shielding wires connect to the metal plate
of the electric control box "
(P Q E)
Signal wires between indoor and outdoor units
Connect all shielding layer of the shielding wires
(P Q E)
The last set unit needs to add matched resistance in the P, Q terminals
(The indoor unit accessory contains matched resistance).
(Open)
")
Communication wire to centralized controller Communication wire to outdoor unit
Communication wire to centralized controller and outdoor unit please
refer to Fig.7-1 the communication wiring method of indoor and outdoor
units systems, the shielding layer only ground at one place.
Communication wiring holder
白 蓝 黑 黄 灰 黑
X Y (E) P Q (E)
Power-supply wiring holder
Fig.7-1
Fig.7-2
Fig.7-3
installation manual
11