20 | Configuration
Installer and user reference guide
65
FXMQ-A
VRV system air conditioner
4P701548-1 – 2022.07
20 Configuration
20.1 Field setting
Make the following field settings so that they correspond with the actual
installation setup and with the needs of the user:
▪ External static pressure setting using:
- Airflow automatic adjustment setting
- User interface
▪ Air volume when thermostat control is OFF
▪ Time to clean air filter
▪ Thermostat sensor selection
▪ Thermostat sensor in group control
▪ Thermostat differential changeover (if remote sensor is used)
▪ Differential for automatic changeover
▪ Auto-restart after power failure
▪ T1/T2 input setting
Setting: External static pressure
INFORMATION
▪ The fan speed of the indoor unit is preset to ensure the standard external static
pressure.
▪ To set a higher or lower external static pressure, reset the initial setting with the
user interface.
Settings for external static pressure can be achieved in 2 ways:
▪ Using the airflow automatic adjustment function
▪ Using the user interface
To set external static pressure by airflow automatic adjustment function
NOTICE
▪ Do NOT adjust the dampers during the fan only operation for airflow automatic
adjustment.
▪ For the external static pressure higher than 100Pa, do NOT use airflow automatic
adjustment function.
▪ If the ventilation paths have been changed, perform the airflow automatic
adjustment again.
▪ Test run MUST be done with a dry coil, run the unit for 2 hours with fan only to
dry the coil.
▪ Check if the power supply wiring, duct, air filter are properly attached. If the
closing damper is installed in the unit, make sure it is open.
▪ If there is more than one air inlet and outlet, adjust the dampers so that the
airflow rate of each air inlet and outlet is conform with the designed airflow rate.
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