93
ENGLISH
Setting the MCU and Pipe Addresses (for HR Only)
You can set the MCU address, the MCU ports to use, and the address for each MCU port connected to each indoor unit.
It is for 2nd-generation MCU only. (MCU-S
✴
NEK2N,MCU-S4NEK3N,MCU-S1NEK1N)
Setting the MCU address and the MCU ports to use
You can set the MCU address and the MCU ports on the MCU PBA.
1
ON
2 3 4
1
ON
2
A B C D
3 4
1
ON
2
E F
0 1
2
3
45
67
8
9
0 1
2
3
45
67
8
9
A
B
C
D
E
F
MCU address
switch
DIP switch
S/W option DIP switch
1. Set the MCU address switch to a value. If two or more MCUs are installed, be sure to set a unique value for each MCU. For
the MCU address, you can set a value from 0 to 15.
2. For each MCU ports that are connected to an indoor unit through piping, set their DIP switch to ON. For other MCU ports,
set their DIP switches to OFF.
You can fi nd the address (A to F) of an MCU port on the indoor unit piping connection.
3. If two MCU ports are connected to an indoor unit through a Y-joint, set the relevant S/W option DIP switch to the settings
given in the following table:
S/W option DIP
switch No.
ON
(Individual connection)
OFF
(Shared connection)
1
Each of ports A and B
Both ports A and B
2
Each of ports C and D
Both ports C and D
3
Each of ports E and F
Both ports E and F
❋
You cannot make a shared connection for the two ports B and C, and D and E at the same time.
A
B
C
D
E
F
A
F
A
B
C
D
E
F
B
D
E
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