90
<1-way Air Discharge Cassette (YH) Type, Floor Standing Type, Concealed Duct High
Static Pressure Type, Floor Standing Concealed Type, Floor Standing Cabinet Type,
Fresh Air Intake Type>
DC5V
EEPROM
DC5V
DC12V
DC20V
X
Y
A B A B A B
L
N U1
U1
U2
U2
HA
R S
U1 U2
R S
U1 U2
Central
control
remote
controller
(optional)
(In case of
AI-NETWORK)
Indoor unit
#1
Network adaptor (optional)
Switch setting
Power supply circuit
Network
adaptor P.C.
board
(MCC-1401)
Remote controller
communication
circuit
AI-NET
communication
circuit
Transformer
CPU
H8/3687
Indoor control P.C. board (MCC-1403)
Outdoor
unit
Outdoor
unit
Power
source
Power
source
Sameas left
*2
Sameas left
*2
#2 #3
Up to 8 units can be
connected. *1
*1 Only up to 7 units
if a network
adaptor is installed
with 2 wireless
remote controller
kits connected.
*2 The network
adaptor can only
be installed in one
unit.
Indoor/outdoor communication
Outdoor
unit
Power source
1Ø 220-240V, 50Hz
1Ø 220V, 60Hz
Wireless remote controller kit
Remote controller
communication
circuit
Sensor
section
Display
section
PMV
Louver
motor
Drain
pump
Indoor
fan
motor
*
Not applicable to
concealed duct high
static pressure type
Power supply circuit
Driver
Remote
controller
communication
circuit
CPU
H8/3039
TA sensor
TCI sensor
TC2 sensor
TCJ sensor
Float input
*
Not applicable to concealed
duct high static pressure type
In operation
Alarm
Getting ready
Thermostat ON
COOL
HEAT
FAN
AC
synchronization
signal input circuit
BUS
communication
circuit
External
output
Transformer
Fan motor
control circuit
* 1-way Type only
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