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Single Refrigerant System With Two Or More Lossnay Units - Mitsubishi Electric PURY-HP72 Service Handbook

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

Single Refrigerant System with Two or More LOSSNAY Units

(1) Sample control wiring
L1
Leave the male
Leave the male
connector on
connector on
CN41 as it is.
CN41 as it is.
SW5-1 OFF
SW5-1 OFF
OS
52
TB3
TB7
M1 M2
M1 M2
S
(2) Cautions
1)
ME remote controller and MA remote controller cannot 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. It is not possible to connect a pair of PAR-
30MAAU.
3)
When the number of the connected indoor units is as shown in
the table below, one or more transmission boosters (sold sepa-
rately) are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that
are listed in the specifications for each outdoor unit.)
When the P72 and P96 models are not in-
cluded in the connected indoor units
When the P72 and P96 models are includ-
ed in the connected indoor units
HWE13080
L3
L2
OC
BC
51
53
TB3
TB7
TB02
M1 M2
M1 M2
S
M1 M2
S
M1 M2
S
TB02
57
BS
* If the BC address overlaps any of the addresses that are assigned to either the OC, OS, or BS, use a different, unused address.
OC, OS, and BS addresses (lowest indoor unit address in the group plus +50) have higher priority than the BS address.
Number of transmission
booster (sold separately)
required
1 unit
2 units
27 - 50
-
units
21 - 39
40 - 50
units
units
Interlock operation with the ventilation unit
L4
Group
Group
IC
01
TB5
TB15
TB5
M1M2
S
1 2
M1M2
A1 B2
MA
L12
Group
IC
03
TB5
TB15
TB5
M1M2
S
1 2
M1M2
A1 B2
MA
m3
IC
07
TB5
TB15
TB5
M1M2
M1M2
S
1 2
S
A1 B2
MA
The table above shows the number of transmission boost-
ers that is required by the system with three BC controllers.
For each BC controller that is subtracted from the above-
mentioned system, two additional indoor units can be con-
nected.
Refer to the DATABOOK for further information about how
many booster units are required for a given system.
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as 2-7-1
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Same as 2-7-1
- 34 -
L5
LC
IC
02
05
TB15
TB5
S
1 2
M1M2
S
A1 B2
MA
L13
LC
IC
04
06
TB15
TB5
S
1 2
M1M2
S
IC
08
TB15
1 2
A1 B2
MA
GB

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