Design and Technical Manual

9. Group connection
NOTE: Group control cannot be used together with Wireless LAN adapter.
Installation procedure for group control system:
A number of indoor units can be operated at the same time using a single remote controller.
NOTE: When different type of indoor units (such as wall mounted type and cassette type, cassette
type and duct type, or other combinations) are connected using group control system, some
functions may no longer be available.
1. Connect up to 16 indoor units in a system.
A
B C D E
I.U. I.U. I.U. I.U.
Remote controller
A, B, C, D, E: Remote controller cable
Wiring length limitation A + B + C + D + E ≤ 546.8 yd (500 m)
Example of wiring method
1 2
R W
Remote
controller cable
Bus wire
Remote controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
2. Set the R.C. address. (Function setting)
• Addresses will be automatically set when initially starting up this unit. In such a case, do not
change the remote controller address for the indoor unit, and keep it at the initial setting of
“00”.
• Only set addresses manually when using different numbers for addresses.
Set the R.C. address of each indoor unit using the function setting. (Refer to “Remote con-
troller address setting” in "Contents of function setting" on page 37.)
NOTES:
– Do not use the same setting value.
– Setting is reflected after the power is turned on again.
Also set the R.C. address for the remote controller. For details, refer to the remote controller
installation manual.
NOTE: In manual setting, connect up to 15 indoor units in a system.
RC AD
01
RC AD
02
RC AD
03
RC AD
04
Remote controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Example of wiring method
- 32 -
9. Group connection
WALL MOUNTED ASUG09-12LMAS WALL MOUNTED ASUG09-12LMAS