Daikin UATYA160BFC2Y1 [21/356] Thermoregulation in cooling mode

Translation from original instructions

Packaged Rooftop

21

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UATYA

4P645203-1

The values set in parameters “ST9” for cooling and “STH9” for heating determine the control probe type, as follows:

- 0 = temperature probe on air delivery line;

- 1 = temperature probe on air return line;

The values set in parameters “ST11” for cooling and “STH11” for heating determine the type of temperature control,

setpoint (parameter “ST1”), and on parameter “ST11” which determines the type of temperature/humidity control.

In proportional control mode, the controller activates the available resources as the value read by the reference probe

increases in comparison to the setpoint value.

When “Cascade” temperature/humidity control is selected, the controller uses it to enable the resources and at the

same time monitor the air temperature in the delivery line.

In PID control mode, the controller activates the available resources as the demand increases. The controller

calculates the demand and checks the value measured by the probe against the setpoint value and according to its

variation over time using the parameters set in the PID.

Proportional temperature control

If parameter “ST11” is set to “0”, proportional control is enabled.

ST6 0.1 °C Proportional control - Cooling - O󰀨set

A graphical representation is shown below.