Mitsubishi Electric PUHY-P250YJM-A, Service Manual

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[
II
Restrictions ]
GB HWE10190
[5] An Example of a System to which an MA Remote Controller is connected
1. Single-outdoor-unit system (manual IC/OC address setup)
(1) Sample control cable wiring configuration
(2) Cautions
1) Do not connect terminal blocks TB5 on the indoor units
that are connected to an outdoor unit in a different refrig-
erant circuit with each other.
2) No more than two MA remote controllers can be connect-
ed to a group of indoor units. To connect three or more
indoor units to the system, use two or less MA remote
controllers.
(3) Maximum allowable length
1) Indoor-outdoor transmission cable
Maximum cable distance (1.25 mm
2
[AWG16] min.)
L1 ≤ 200m [656ft]
2) Transmission cable for the centralized control system
No connection is required.
3) MA remote controller wiring
Total cable length (0.3 to 1.25mm
2
[AWG22 to 16])
m1 ≤ 200m [656ft]
m2+m3 ≤ 200m [656ft]
IC
TB5
M1 M2 S
TB15
1 2
01
A B
MA (main body)
IC
TB5
M1 M2 S 1 2
TB15
02
A B
MA (sold separately)
A B
MA (main body)
Main
Sub
Group
Group
A B
MA
m1
m3
m2
L1
OC
TB3
TB7
M1 M2 M1 M2 S
51
OC
TB3 TB7
M1 M2
M1 M2 S
52
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