2. M-NET control
DATA U5
SYSTEM DESIGN
System H
2-3. System configuration restrictions
For each Outdoor unit, the maximum connectable quantity of Indoor unit is specified at its Specifications table.
A) 1 Group of Indoor units can have 1-16 Indoor units;
B) Maximum 2 remote controllers for 1 Group; (MA/ME remote controllers cannot be present together in 1group.)
C) 1 LOSSNAY unit can interlock maximum 16 Indoor units; 1 Indoor unit can interlock only 1 LOSSNAY unit.
D) Maximum 3 System controllers are connectable when connecting to TB3 of the Outdoor unit.
E) Maximum 3 System controllers are connectable when connecting to TB7 of the Outdoor unit, if the transmission
power is supplied by the Outdoor unit.
F) 4 System controllers or more are connectable when connecting to TB7 of the Outdoor unit, if the transmission
power is supplied by the power supply unit PAC-SC50(51)KUA. Details refer to 2-3-3-C.
*System controller connected as described in D) and E) would have a risk that the failure of connected Outdoor
unit would stop power supply to the System controller.
2-3-1. Common restrictions for the CITY MULTI system
Indoor, OA unit
Indoor unit
MA RC.LOSSNAY
ME Remote Contr.
Timers, System Contr.
ON/OFF Contr
MN Converter
.
1
2
0
1/4
1/2
3
1
2
1/2
Sized P06-P54 Sized P72,P96
BC controller
2
CMB
PAR-21MAA
PAC-YT51CRA(B)
PAR-FA32MA
LGH-RX-E
PAR-F27MEA
PZ-52SF
GB-50A
PAC-SF44SRA
PAC-YT34STA
G-50A
AG-150A
PAC-YT40ANRA CMS
-MNF-B
CMS
-MNG-E
*RC : Remote Controller
Table 2-3-1 The equivalent power consumption by index Indoor units, LOSSNAY, controllers
Transmission Booster
25
PAC-SF46EPA
Power supply unit
6
PAC-SC50KUA
5
PAC-SC51KUA
Outdoor unit
32
Connector TB3 and TB7 total *
Outdoor unit
6
Connector TB7 only
*If PAC-SC50(51)KUA is used to supply power at TB7 side, no power supply need from Outdoor unit at TB7, Connector TB3 itself will therefore have 32. Not
applicable to the PUMY model.
Table 2-3-2 The equivalent power supply capability index of Trans.Booster, Power supply unit, Connector TB3, TB7 of Outdoor unit.
With the equivalent power consumption values in Table 2-3-1 and Table 2-3-2, PAC-SF46EPA can be designed into the air-
conditioner system to ensure proper system communication according to 2-3-2-A, B, C.
2-3-2-A) Firstly, count from TB3 at TB3 side the total quantity of Indoor units and ME remote controller, Timers and System
controllers.If the total quantity reaches 40, a PAC-SF46EPA should be set.In this case, Indoor unit sized P72, 96 is
counted as 2 Indoor units, but MA remote controller(s), LOSSNAY is NOT counted.
2-3-2-B) Secondly, count from TB7 side to TB3 side the total transmission power consumption index. If the total power consumption
reaches 32, a PAC-SF46EPA should be set.Yet, if a PAC-SC50(51)KUA is used to supply power at TB7 side, count from
index TB3 side only.
2-3-2-C) Thirdly, count from TB7 at TB7 side the total transmission power consumption index, If the total power consumption reaches
6, a PAC-SF46EPA should be set.
2-3-2. Ensuring proper communication power for M-NET
In order to ensure proper communication among Outdoor unit, Indoor unit, LOSSNAY and Controllers, the transmission
power situation for the M-NET should be observed. In some cases, Transmission booster should be used. Taking the
power consumption index of Indoor unit sized P06-P54 as 1, the equivalent power consumption index and supply
capability index of others are listed at Table 2-3-1 and Table 2-3-2.
System example
ME remote
controller
ME remote
controller
PZ-52SF
LOSSNAY
unit
PZ-52SF
LOSSNAY
unit
Outdoor unit
M-NET
02
01
if the total quantity of Indoor units and ME remote controllers
reaches 40, (Indoor unit sized P72, 96 is counted as 2);
or if the total equivalent transmission power consumption reaches 32.
N1
N3
N2
Transmission booster (No.1) should be used,
1.The total quantity of Indoor units and ME remote controller
should not exceed 40.
*Indoor unit sized P72, 96 is counted as 2 units.
2.The total equivalent transmission power consumption
should not exceed 25.
Within N2, conditions 1,2 should be followed.
N4
Within N4, the total equivalent transmission
power consumption should not exceed 25.
TB7
TB3
TB7
TB3
if the total equivalent transmission power consumption reaches 5.
Transmission booster (No.2) should be used,
PAC-SF46EPA
TRANSMISSION BOOSTER
3.4kg
220-240V:0.7A ~/N
WEIGHT
POWER RATING
MODEL
MADE IN JAPAN
50
UP
PAC-SF46EPA
TRANSMISSION BOOSTER
3.4kg
220-240V:0.7A ~/N
WEIGHT
POWER RATING
MODEL
MADE IN JAPAN
50
UP
Transmission
booster
(No.1)
Transmission
booster
PAC-SF46EPA
(No.2)
PZ-41SLB
Power supply unit
PAC-SC51KUA
24VDC
Centralized controller
(AG-150A)
CENTRALIZED CONTROLLER AG-150A
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