Grouped Operation Of Units In Separate Refrigerant Circuits - Mitsubishi Electric PUHY-P200 Service Handbook

[2-7 Example System with an MA Remote Controller ]
2-7-3

Grouped Operation of Units in Separate Refrigerant Circuits

(1) Sample control wiring
Leave the male Leave the male
connector on connector on
CN41 as it is. CN41 as it is.
SW5-1 OFF SW5-1 OFF
OS2
53
TB3
M1 M2
TB7
M1 M2 S
To be left
unconnected
Leave the male Leave the male
connector on connector on
CN41 as it is. CN41 as it is.
SW5-1 OFF SW5-1 OFF
OS2
56
TB3
M1 M2
TB7
M1 M2 S
To be left
unconnected
(2) Cautions
1) ME 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 200 model or above is connected) are con-
nected.
Refer to the DATABOOK for further information about
how many booster units are required for a given system.
HWE14040
L11
Move the male connector
from CN41 to CN40.
SW5-1 OFF
OS1 OC
52 51
TB3 TB3
M1 M2 M1 M2
TB7 TB7
M1 M2 S M1 M2 S
To be left
unconnected
To be connected
L21
Leave the male
connector on
CN41 as it is.
SW5-1 OFF
OS1 OC
55 54
TB3 TB3
M1 M2 M1 M2
TB7 TB7
M1 M2 S M1 M2 S
To be left
unconnected
To be left
unconnected
L12
Group Group
IC
01 03
TB5 TB15 TB5
M1 M2 S 1 2 M1 M2 S
A B
MA
L22
Group
IC
02
TB5 TB5
TB15
M1 M2 M1 M2
S 1 2
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L11+L12 200m [656ft]
L21+L22 200m [656ft]
2) Transmission line for centralized control
L21+L31 200m [656ft]
3) MA remote controller wiring
Same as 2-7-1
4) Maximum line distance via outdoor unit
2
(1.25mm
L12(L11)+L31+L22(L21) 500m [1640ft]
- 36 -
Interlock operation with
the ventilation unit
Group
IC IC
06
TB15 TB5 TB15
1 2 M1 M2 S 1 2 M1 M2
A B A B
MA MA
IC IC
04 05
TB15 TB5 TB15
M1 M2
S 1 2 S 1 2
A B
MA
m5
2
[AWG16] or larger)
[AWG16] or larger)
LC
07
TB5
S
GB