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Configuration
Installer and user reference guide
79
FXUA50~100AVEB
VRV system air conditioner
4P673843-1 – 2022.01
Setting: T1/T2 input setting
WARNING
In case of R32 refrigerant, terminal connections T1/T2 are for fire alarm input ONLY.
Fire alarm has a higher priority than R32 safety and shuts the entire system down.
T1
T2
X1M
a
a
Fire alarm input signal (potential free contact)
Remote control is available by transmission the external input to the terminals T1
and T2 on the terminal block for the user interface and the transmission wiring.
F2
T1
OFF
FORCED
T2
Input A
b
a
a
Forced OFF
b
Input A
Wiring requirements
Wiring specification
Sheathed vinyl cord or 2-core cable
Wiring size
0.75~1.25 mm
2
Wiring length
Maximum 100 m
External contact specification
Contact that can make and break the
min. load of DC15 V · 1 mA
This setting must correspond with the needs of the user.
If you want to change increments to…
Then
(1)
M
SW
—
Forced OFF
12 (22)
1
01
ON/OFF Operation
02
Emergency (recommended for alarm operation)
03
Forced OFF - multi tenant
04
Interlocking setting A
05
Interlocking setting B
06
(1)
Field settings are defined as follows:
•
M
: Mode number –
First number
: for group of units –
Number between brackets
: for individual unit
•
SW
: Setting number
•
—: Value number
•
: Default
