Midea MIH15GN18 Manual De Usuario E Instalacion página 50

B
IDUs are provided with uniform power supply*, which are wired as follows:
1. HyperLink communication with the uniform power supply:
Power supply for IDU
× ×
Circuit breaker
Master ODU IDU 1#
CN23 CN10
M1 M2
M1 M2
L1
2. P/Q communication:
Power supply for IDU
× ×
Circuit breaker
Master ODU
IDU 1#
CN6
CN22
P
Q P Q
L1
3. P/Q/E communication:
Power supply for IDU
× ×
Circuit breaker
Master ODU IDU 1#
CN6
CN22
P Q E P Q E
L1
Distribution box
CN1
···
2-(n-2)# IDU
L N
La
Distribution box
CN1
···
2-(n-2)# IDU
L N
La
Use shielded cables and
ground the shield layer.
Distribution box
CN1
···
2-(n-2)# IDU
N
L
La
Use shielded cables and
ground the shield layer.
L1+La+Ln ≤ 2000m
Wire diameter: 0.75mm
2
Distribution box
IDU (n-1)#
CN1
CN10
M1 M2 L N
Distribution box
IDU (n-1)#
CN1
CN6
L
P Q N
Distribution box
IDU (n-1)#
CN1
CN6
P Q E L
N
45
Installation
Communication wire
Power cable
IDU n#
CN1
CN10
M1 M2 L
Ln
Communication wire
Power cable
Build-out
IDU n# resistor
CN6 CN1
R
L
P Q
Ln
Communication wire
Power cable
Build-out
IDU n#
resistor
CN1
CN6
R
P Q E L
Ln
N
N
N