6. Electrical Wiring Diagram
ACU kit (AHU control kit)
7
English
Instal
lation
External dimensions
[Unit: inch (mm)]
223.8
[8-13/16]
47.
5
[1
-7/8]
173.8
[6-13/16]
Circuit diagram
SW1
SW2
SW3
G3(RED)
G2(BLU)
G1(YEL)
AHU Control Unit (ACU)
INDOOR FAN 3 STEP
INDOOR FAN 2 STEP
INDOOR FAN 1 STEP
COMPRES
SOR
ST
AGE 1
OUTDOOR
COMMUNIC
ATION
AC PO
WER
24
Va
c
COMPRES
SOR S
TA
GE 2
FA
N
AU
X HEA
TER S
TA
GE
1
4W
AY V
AL
VE
COMPRES
SOR
ST
AGE 1
COMPRES
SOR S
TA
GE 2
FA
N
AU
X HEA
TER S
TA
GE
1
AU
X HEA
TER S
TA
GE 2
De
humidific
ation
THERMOSTAT
AHU/INDOOR
AU
X HEA
TER S
TA
GE 2
De
humidific
ation
4W
AY V
AL
VE
FAN SPEED CONTROL
Reset
Reserved
DB68-12061A-00_IM_ACC NEW AHU Control Unit_AA_EN_.indd 7
DB68-12061A-00_IM_ACC NEW AHU Control Unit_AA_EN_.indd 7
2022-10-26 오후 3:16:11
2022-10-26 오후 3:16:11
Y1
1-stage operation
Y2
2-stage operation
G
Fan signal
D
Dehumidifier
W1
Auxiliary heater 1-stage(heat pump)
Furnace 1-stage
W2
Auxiliary heater 2-stage(heat pump)
Furnace 2-stage
O/D
4Way valve (24 VAC : Heating, 0 VAC : Cooling)
250V / T2.5A
FUSE
•
This wiring diagram applies only to the outdoor unit.
•
Colors BLK: black, RED: red, BLU: blue, WHT: white, YEL: yellow, BRN: brown, SKY: skyblue
•
When operating, don’t shortcircuit the protection device (High Pressure switch)
•
For connection wiring indoor-outdoor transmission F1-F2.
•
Protective earth(screw),
: connector, : The wire quantity