Fujitsu AB* A12GATH, Design & Technical Manual

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„ „
OPERATION STATUS
(External output1)
The output for CNB01 (1-2) is ON when the indoor
unit is operating.
The output is off when the unit is stopped.
„ „
ERROR STATUS
(External output2)
The output for CNB01 (1-3) is ON when an error
is generated for the indoor unit.
„ „
INDOOR UNIT STATUS
(External output3)
The output for CNB01 (1-4) is ON when the indoor
unit fan is operating.
The output is off when the fan is stopped or
during cold air prevention.
The output for CNB01 (1-4) is OFF during
thermostat OFF when DRY mode operation.
„ „
AUXILIARY HEATER OUTPUT
(External output4)
Corresponding indoor units: All duct type.
A signal is outputted from Connector when indoor fan and thermostat 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.
The output also turns OFF on defrost operation and oil recovery operation.
„ z
Fan delay switch (Indoor Unit)
This is used to continue indoor unit fan
operation for 1 minute after thermo OFF
in heating mode.
1 minute delay control set by Dip sw2-3
on PCB is ON.
CAUTION
Please install auxiliary heater between the indoor unit and the outlet side.
Please be sure to use delay control of a fan.
Please design and install auxiliary properly considering
protection by auxiliary itself.
If auxiliary does not design and install properly, it may cause fire by auxiliary's heat.
In case of auxiliary does not design and install properly, our company cannot take responsibility.
Operation
Stop
12V
0V
CNB01(1-2)
Output
Indoor unit
Error
Normal
12V
0V
CNB01(1-3)
Output
Indoor unit
Fan run
Fan stop
12V
0V
CNB01(1-4)
Output
Indoor unit
Ex) Used for inter lock energize for exhaust fan.
OFF
OFF
ON
Tr-Ts = -1°C
Tr-Ts
Tr-Ts = -3°C
Tr-Ts = -10°C
Tr-Ts = -12°C
ON
OFF
Operation
Stop
Heating
operation
Indoor unit fan
12V
0V
CNB01 (1-5)
output
1min
Auxiliary
Heater
Supply air Return air
Indoor unit
- (08 - 23) -
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T