2-3.System Configuration Restrictions - Mitsubishi Electric CITY MULTI H Series Manual

2. M-NET control
2-3. System configuration restrictions
2-3-1. Common restrictions for the CITY MULTI system
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.
2-3-2. 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.
Table 2-3-1 The equivalent power consumption by index Indoor units, LOSSNAY, controllers
Indoor, OA unit Indoor unit
Sized P06-P54 Sized P72,P96
1 2
*RC : Remote Controller
Table 2-3-2 The equivalent power supply capability index of Trans.Booster, Power supply unit, Connector TB3, TB7 of Outdoor unit.
Transmission Booster
PAC-SF46EPA
25
*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.
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.
System example
TB7 TB3
TB7 TB3
Outdoor unit
CENTRALIZED CONTROLLER AG-150A
M-NET
Centralized controller
(AG-150A)
24VDC
Power supply unit
PAC-SC51KUA
Transmission booster (No.2) should be used,
if the total equivalent transmission power consumption reaches 5.
BC controller MA RC.LOSSNAY ME Remote Contr.
PAR-21MAA
CMB PAR-F27MEA
PAC-YT51CRA(B)
PZ-52SF
PAR-FA32MA
LGH-RX-E
PZ-41SLB
2 0
Power supply unit
PAC-SC50KUA PAC-SC51KUA
6 5
01 02
ME remote
controller
N1
Transmission booster (No.1) should be used,
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.
LOSSNAY
unit
PZ-52SF
N3
SYSTEM DESIGN
Timers, System Contr.
PAC-SF44SRA GB-50A
PAC-YT34STA
G-50A
AG-150A
1/4 1/2
Outdoor unit
Connector TB3 and TB7 total *
32
UP
TRANSMISSION BOOSTER
MODEL PAC-SF46EPA 220-240V:0.7A ~/N
POWER RATING WEIGHT 3.4kg 50
MADE IN JAPAN
Transmission
booster
(No.1)
UP
TRANSMISSION BOOSTER
MODEL POWER RATING PAC-SF46EPA 220-240V:0.7A ~/N
WEIGHT 3.4kg 50
MADE IN JAPAN
Transmission
booster LOSSNAY
PAC-SF46EPA unit
(No.2)
PZ-52SF
N4
Within N4, the total equivalent transmission
power consumption should not exceed 25.
ON/OFF Contr . MN Converter
PAC-YT40ANRA CMS
CMS
-MNF-B
-MNG-E
3 1 1/2
Outdoor unit
Connector TB7 only
6
ME remote
controller
N2
Within N2, conditions 1,2 should be followed.
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.
DATA U5
2
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