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SMMS-i
Installation Manual
EN
SMMS-i
Installation Manual
“–”: not used for system address setting (Do not change their positions.)
2 Be sure to disconnect the relay connectors between the [U1U2] and [U3U4] terminals on all the
header outdoor units that will be connected to the central control. (Factory default: disconnected)
3 Turn on indoor units first, and then turn on outdoor units.
4 About 1 minute after turning the power on, confirm that the 7-segment display on the interface
P.C. board of the header outdoor unit indicates .
5 Press SW 15 to start the automatic address setting.
(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)
6 The 7-segment display indicates .
After the indication, starts flashing on the display.
When the flashing stops and , remains lit on the display, the setting is
complete.
7 Repeat steps 4 to 6 for other refrigerant lines.
8 After completing address setting of all systems, turn off dip switch 2 of SW30 on the interface P.C.
boards of all the header outdoor units connected to the same central control, except the unit that
has the lowest address.
(For unifying the termination of the wiring for the central control of indoor and outdoor units)
26 –––{{✕✕{
27 –––{ ✕ { ✕ {
28 –––{{{✕ {
Line (system) address
SW13 SW14
12341234
U1 U2 U3 U4 U5 U6
2
TO
INDOOR
UNIT
TO
CENTRAL
CONTROL
LER
TO
OUTDOOR
UNIT
U. 1. L08 (U. 1. flash)
Auto 1 → Auto 2 → Auto 3
U. 1. - - - (U. 1. flash)
U. 1. - - - (U. 1. light)
9 Connect the relay connectors between the [U1, U2] and [U3, U4] terminals of the header outdoor
unit of each refrigerant line.
10
Set the central control address.
(For the setting of the central control address, refer to the installation manuals of the central control devices.)
U1 U2 U3 U4 U5 U6
9
TO
INDOOR
UNIT
TO
CENTRAL
CONTROL
LER
TO
OUTDOOR
UNIT
SW15
SW04
12
SW13 SW14
SW01 SW02
SW03
D600 D601 D602 D603 D604
SW05
SW30
7-segment
display
Header unit interface P.C. board
47-EN 48-EN
+00EH99871699_01EN.book Page 24 Thursday, August 26, 2010 4:41 PM