Single Refrigerant System With Two Or More Lossnay Units - Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook

[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
connector on
CN41 as it is.
SW5-1 OFF
HU
52
TB3
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.
3) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 200 model or above is connected) are con-
nected.
Refer to the DATABOOK for further information about
how many booster units are required for a given system.
BS_02_E
L2
Group
OC
51
TB3
TB7
M1 M2
M1 M2 M1 M2 S
Group
M1 M2
L3
Group
IC IC
01 02
TB5 TB15 TB5
S 1 2 S
M1 M2
A B
MA
L12
IC IC
03 04
TB5 TB15 TB5 TB15
S 1 2 M1 M2 S 1 2
A B
MA
m3
(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
Interlock operation with
the ventilation unit
L4
LC
05
TB15 TB5
1 2 S
M1 M2
A B
MA
L13
LC
06
TB5
M1 M2 S
13
chapter 2 -