Mitsubishi MXZ-8B140VA Technical & Service Manual page 57

<Example 2>
(in case of wiring to P100 indoor unit(s))
Branch Box
(PAC-AK52BC only)
(A) (A)
L
E
N
Circuit
TB2B
(C)
breaker (B)
S1
S2
S3
OCH480D
Indoor unit
(D)
TB3A
A ROOM
S1 S1
P100
S2 S2
Indoor unit
S3 S3
TB3B
S1 S1 S1
S2 S2 S2
S3 S3 S3
TB3C (D)
B ROOM
S1 S1
P100
S2 S2
Indoor unit
S3 S3
TB3D
S1
S2
S3
TB3E
S1
S2
S3
Fig. 9-2
9-2. WIRING TO P100 INDOOR UNITS (Fig. 9-2)
• When wiring P100 indoor unit(s), only use PAC-AK52BC
branch box.
• When wiring a single P100 indoor unit, use TB3A.
Notes:
• When wiring a single P100 indoor unit, ONLY use TB3A.
If a single P100 indoor unit is wired to the other terminal
block, an alarm will be activated, and the indoor unit will
not operate.
• When a single P100 indoor unit is wired to TB3A, do not
wire any indoor unit to TB3B. Otherwise, an alarm will
be activated, and the indoor unit will not operate.
• TB3C, TB3D, and TB3E are available for wiring of indoor
units that are not P100.
• W hen wiring two P100 indoor units, use TB3A and TB3C.
Notes:
• When wiring two P100 indoor units, ONLY use TB3A
and TB3C.
If two P100 indoor units are wired to the other terminal
blocks, an alarm will be activated, and the indoor units
will not operate.
• When two P100 indoor units are wired to TB3A and
TB3C respectively, do not wire any indoor unit to TB3B
or TB3D. Otherwise, an alarm will be activated, and the
indoor unit will not operate.
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