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(Optional) Setting the Pressure Difference Control
Prerequisites
If micro differential pressure sensors are installed, perform the following operations accordingly. If micro differential pressure sensors are not installed, skip this part.
Procedure
- On the home screen, choose , and set Air-side differential pressure sensor type to 0~500 Pa.
- Set Indoor fan control type to Pressure diff ctrl.
- Change the other parameters based on the following instructions.
Parameter
Description
Indoor fan control type
- R/S air temp diff prop ctrl: controls the indoor fan speed based on the proportion of temperature difference between return air and supply air.
- R/S air temp diff ctrl: controls the indoor fan speed based on the temperature difference between return air and supply air.
- Pressure diff ctrl: controls the indoor fan speed based on the pressure difference.
Indoor fan pressure difference setpoint
Specifies the control value of indoor fan pressure difference.
NOTE:This parameter is displayed when Indoor fan control type is set to Pressure diff ctrl.
Air-side differential pressure sensor type
Select the proper differential pressure sensor type based on the measurement range of the differential pressure sensor.
Min indoor fan speed
Specifies the minimum rotational speed of the indoor fan.
Max indoor fan speed
Specifies the maximum rotational speed of the indoor fan.