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Mitsubishi Electronics PUHY-P144 User Manual

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[
II  Restrictions ] 
31
- 31 -
HWE08040
GB
3.  Group operation of units in a system with multiple outdoor units
(1) Sample control wiring
(2) Cautions
1)   M-NET remote controller and MA remote controller can-
not both be connected to the same group of indoor units.
2)   No more than 2 MA remote controllers can be connected 
to a group of indoor units.
3)   Do not connect the terminal blocks (TB5) on the indoor 
units that are connected to different outdoor units with 
each other.
4)   Replacement of male power jumper connector (CN41) 
must be performed only on one of the outdoor units.
5)   Provide grounding to S terminal on the terminal block for 
transmission line for centralized control (TB7) on only 
one of the outdoor units.
6)   A transmission booster is required in a system to which 
more than 32 indoor units (26 units if one or more indoor 
units of the 72 model or above is connected) are con-
nected.
(3)  Maximum allowable length
1)   Indoor/outdoor transmission line
Maximum distance (1.25mm
2
 [AWG16] or larger)
L11+L12
200m [656ft]
L21+L22
200m [656ft]
2)   Transmission line for centralized control
Maximum line distance via outdoor unit 
(1.25mm
2
 [AWG16] or larger)
L12+L31+L22
500m [1640ft]
L11+L31+L21
500m [1640ft]
3)   MA remote controller wiring
Same as [5] 1.
IC
TB5
S
TB15
1 2 
01
IC
TB5
S
TB15
1 2 
03
A B 
MA 
A B 
MA 
LC
TB5
S
07
IC
TB5
S
1 2 
TB15
IC
TB5
S
TB15
1 2 
1 2 
04
02
IC
TB5 TB15 
S
05
A B 
MA 
IC
TB5
S
TB15
1 2 
06
A B 
MA 
Group
Group
Group
Group
M1M2 M1 
M2 M1 
M2 M1 
M2
M1M2
M1M2
M1M2
m2
m3
Interlock operation with 
the ventilation unit 
L12
L22
L11 
L21
OC
TB3
TB7
S
51
Connect
Not
connect
Not
connect
OS1
TB3
TB7
S
52
OS2
TB3
TB7
M1 M2 
M1 M2 
M1 M2 
M1 M2 
M1 M2 
M1 M2 
S
53
OC
TB3
TB7
S
54
OS1
TB3
TB7
S
55
OS2
TB3
TB7
M1 M2 
M1 M2 
M1 M2 
M1 M2 
M1 M2 
M1 M2 
S
56
L31
Leave the male 
connector on 
CN41 as it is. 
SW2-1 OFF 
Leave the male 
connector on 
CN41 as it is. 
SW2-1 OFF 
Leave the male 
connector on 
CN41 as it is. 
SW2-1 OFF 
Leave the male 
connector on 
CN41 as it is. 
SW2-1 OFF 
Leave the male 
connector on 
CN41 as it is. 
SW2-1 OFF 
SW2-1 OFF 
CN41    CN40 Replace
Not
connect
Not
connect
Not
connect