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D
U
C
T T
YP
E
AR
C
72
-9
0LH
TA
D
U
C
T T
YP
E
AR
C
72
-9
0LH
TA
AUXILIARY HEATER OUTPUT
A signal is outputed from Connector when indoor fan and compressor is turned on under heating
operation.
* Signal output performance specifications are as
shown on the right
Ex. When Set Temperature(Ts) is 22°C;
▪ and Room Temperature(Tr) increase above 12°C,
signal output is on.
▪ and Room Temperature(Tr) increase above 21°C,
signal output is off.
▪ and Room Temperature(Tr) decrease below 19°C, signal output is on.
▪and Room Temperature(Tr) decrease below 10°C, signal output is off.
Jumper wire (Indoor Unit)
z
This is used to continue indoor unit fan operation for 1 minute after thermo OFF in heating mode.
1 minute delay control set by cutting jumper wire on PCB.
Circuit diagram example
z
Field supply
Indoor unit
control PC board
Connector
1
12 V
on/off 2
Signal
Relay
power
supply
* Make the distance from the PC board to the connected unit within 10m.
Relay spec. : Rated 12VDC, 50mA or less.
Ex.) Heater
Connected unit
Ex.) Relay unit
*10 m
ON
OFF
Operation
Stop
Heating
operation
Indoor unit fan
ON
OFF
Output signal
1min
OFF
OFF
ON
Tr-Ts =
-1°C
Tr-Ts
Tr-Ts =
-3°C
Tr-Ts =
-10°C
Tr-Ts =
-12°C
