Samsung DVM S AM100MXVDGH/ET Technical Data Book page 75

10. Installation
Refrigerant pipe installation
Installing the indoor units
Model
Example installing
(Each port
connection)
Example installing
(MCU series
connection)
Under 16.0 kW indoor unit : Don't use Y-connector
16.0 kW ~ 28.0 kW indoor unit : Use Y-connector at the Gas & Liquid line
If you want to continuous cooling operation under -5 ℃, set outdoor 'Expand
operational temperature range for cooling operation (HR only)' , and use
Y-connector on 5.0 ~ 16 kW indoor unit
In case of using Y-connector, it is only connectable for port combination at below
Connectable port combination for Y-connector : A + B port, C + D port, E + F port
Non-connectable port combination for Y-connector : B + C port, D + E port, non-
Installing indoor
continuous port
units
Set Dip Switch option for using Y-connector
S/W Option
ON
In case of MCU connection in series, the maximum capacity of indoor
units in MCU series connection is 61.6 kW
MCU-S6NEK2N
MCU series connection
MCU
S/W Option
ON
1 2 3 4 1 2 3 4
Combination of C+D port Combination of E+F port
Default Combination of A+B port
MCU-S4NEK3N
MCU
S/W Option S/W Option
ON ON
1 2 3 4 1 2 3 4
MCU-S2NEK2N
This unit is only
connectable for one
port under 16 Kw
This unit is
impossible to
connect MCU to
MCU in series.
MCU-S1NEK1N
75