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Configuration
Installer and user reference guide
79
FXHA-A
VRV system air conditioner
4P673749-1A – 2022.11
Setting: Thermostat differential changeover (if remote sensor is used)
If the system contains a remote sensor, set the increase/decrease increments.
If you want to change increments to…
Then
(1)
M
SW
—
1°C
12 (22)
2
01
0.5°C
02
Setting: Automatic changeover differential
Set the temperature difference between the cooling setpoint and the heating
setpoint in automatic mode (availability depends on the system type). The
differential is the cooling setpoint minus the heating setpoint.
If you want to set…
Then
(1)
Example
M
SW
—
0°C
12 (22)
4
01
cooling 24°C/heating 24°C
1°C
02
cooling 24°C/heating 23°C
2°C
03
cooling 24°C/heating 22°C
3°C
04
cooling 24°C/heating 21°C
4°C
05
cooling 24°C/heating 20°C
5°C
06
cooling 24°C/heating 19°C
6°C
07
cooling 24°C/heating 18°C
7°C
08
cooling 24°C/heating 17°C
Setting: Auto-restart after power failure
Depending on the needs of the user, you may disable/enable the automatic restart
after a power failure.
If you want auto-restart after power failure…
Then
(1)
M
SW
—
Disabled
12 (22)
5
01
Enabled
02
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.
(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
Содержание VRV FXHA32AVEB8
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