20
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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:
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External static pressure setting using:
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Airflow automatic adjustment setting
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User interface
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Air volume when thermostat control is OFF
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Time to clean air filter
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Thermostat sensor selection
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Thermostat sensor in group control
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Thermostat differential changeover (if remote sensor is used)
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Differential for automatic changeover
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Auto-restart after power failure
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T1/T2 input setting
Setting: External static pressure
INFORMATION
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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:
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Using the airflow automatic adjustment function
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Using the user interface
To set external static pressure by airflow automatic adjustment function
NOTICE
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Do NOT adjust the dampers during the fan only operation for airflow automatic
adjustment.
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For the external static pressure higher than 100 Pa, 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.