Mitsubishi Electric PQHY-P72ZLMU-A Service Handbook page 47

[ II Restrictions ]
6. System with one heat source unit (automatic address setup for both indoor and heat source units) <PQRY>
(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 OC
00 00
TB3 TB7 TB3
M1 M2 M1 M2 S M1 M2 M1 M2
*1. When BS is connected to the system,
automatic address setup is not available.
(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.
3) When the number of the connected indoor units is as
shown in the table below, one or more transmission
boosters (sold separately) 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
heat source unit.)
When the P72 and P96 models
are not included in the connect-
ed indoor units
When the P72 or P96 model is
included in the connected in-
door units
The table above shows the number of transmission
boosters 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 connected.
HWE15150
L2 L3
Group
BC
00
TB02
TB7
S M1 M2 S
*1
M1M2 S
TB02
00
Group
BS
A1 B2
MA
Number of transmission
booster (sold separately) re-
quired
1 unit 2 units
27 - 50 units -
21 - 39 units 40 - 50 units
L4
Group
IC IC
00 00
TB5 TB15 TB5
M1 M2 S 1 2 M1 M2 S
A1 B2 A1 B2
MA RC
L12
Group
IC IC
00 00
TB5 TB15 TB5 TB15
M1 M2 S 1 2 M1 M2 S
A1 B2 A1 B2 A1 B2
MA MA
4) Automatic address setup is not available if start-stop in-
put(CN32, CN51, CN41) is used for a group operation of
indoor units. Refer to "[5] 7. Manual address setup for
both indoor and heat source units"
5) To connect more than 2 LOSSNAY units to indoor units
in the same system, refer to the next section "[5] 7. An
example of a system with one heat source unit to which
2 or more LOSSNAY units are connected".
(3) Maximum allowable length
1) Indoor-heat source transmission line
Maximum distance (1.25mm
L1 +L2+L3+L4+L5 200m[656ft]
L1 +L2+L3+L11+L12+L13 200m[656ft]
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Maximum overall line length
2
(0.3 to 1.25mm
m1 200m [656ft]
m2+m3 200m [656ft]
m4+m5 200m [656ft]
- 38 -
Interlock operation with
the ventilation unit
L5
LC
00
TB15 TB5
1 2 M1 M2 S
A1 B2
MA
L13
IC
00
TB5 TB15
1 2 M1 M2 S 1 2
MA
m3
2
[AWG16] or larger)
[AWG22 to 16])
GB