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2. M-NET control
2-3. System configuration restrictions
2-3-1. Common restrictions for the CITYMULTI system
For each Heat source 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;
*OA processing unit GUF-RD(H) is considered as Indoor unit.
B) Maximum 2 remote controllers for 1 Group;
*MA/ME remote controllers cannot be present together in 1group.
*When a PAR-3X MAA series (X indicates 1, 2...) is connected to a group, no other MA remote controllers can be
connected to the same group.
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 Heat source unit.
E) 4 System controllers or more are connectable when connecting to TB7 of the Heat source unit, if the transmission
power is supplied by the power supply unit PAC-SC51KUA. Details refer to (C) below.
*System controller connected as described in D) and E) would have a risk that the failure of connected Heat source
unit would stop power supply to the System controller.
2-3-2. Ensuring proper communication power and the number of connected units for M-NET
In order to ensure proper communication among Outdoor/Heat source unit, Indoor unit, LOSSNAY, OA processing unit
GUF-RD(H), 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 of Indoor unit sized P15-P140 as 1, the equivalent
power consumption or supply of others are listed at Table 1 and Table 2.
Both the transmission line for centralized controller and indoor-outdoor transmission line must meet the conditions listed
below. (Both conditions a) and b) must be met.)
a) [Total equivalent power consumption] ≤ [The equivalent power supply]
b) [Total equivalent number of units] ≤ [40]
Table 1 The equivalent power consumption and the equivalent number of units
Category
Indoor, OA unit
Indoor unit
BC controller
PWFY
MA remote controller/LOSSNAY
ME remote controller
System controller
ON/OFF controller
MN converter
Outdoor/Heat source unit
MEE15K036
Model
Sized P15-P140
GUF-50, 100
Sized P200, P250
CMB
P100VM-E-BU
P100VM-E1-AU
P100VM-E2-AU
P200VM-E1-AU
P200VM-E2-AU
PAR-31MAAE
PAC-YT52CRA
PAR-FA32MA
LGH-RX5-E
PZ-60DR-E
PZ-43SMF-E
PAR-U02MEDA
PAC-IF01AHC-J
AE-200E
AE-50E
EW-50E
AG-150A
EB-50GU-J
AT-50B
PAC-YG60MCA
PAC-YG66DCA
PAC-YG63MCA
PAC-YT40ANRA
CMS-MNG-E
TB7 power consumption
The equivalent
The equivalent
power consumption
number of units
1
7
2
6
1
5
0
0.5
0
0.5
1.5
0.25
1
2
0
SYSTEM DESIGN
1
2
1
1
1
1
0
1
0
1
5
1
1
1
0
173
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