Daikin EWYQ230DAYN Сервис мануал онлайн [338/524] 403923

Functional Control for a Standalone Unit ESIE06-05

2–112 Part 2 – Functional Description

Restart conditions

for outlet control

version 2.2

Restart conditions after normal thermo-OFF for software version 2.2.

After NORMAL thermo-off, AND below conditions are met, the compressor can be restarted.

Start conditions :

■ Timer has counted down

■ Load up signal is given by controller (thermostat)

■ Inlet water temperature during previous thermo-off + restart condition °C is < current inlet water

temp (cooling).

■ Inlet water temperature during previous thermo-off minus restart conditions °C is > current inlet

water temperature (heating).

Restart conditions: restart condition differential value programmed in the service/thermostat menu.

However, for below conditions, condition of inlet water temperature + restart condition °C is invalid and

the unit will start immediately if:

■ Water temperature setpoint has changed + 1 °C or more.

■ Forcing “thermo ON” order has been input from user interface.

■ Inlet thermistor has abnormality and other circuit is in alarm.

Restart conditions

after forced thermo

off

After FORCING thermo off, AND below conditions are met, the compressor can be restarted.

Start conditions:

■ Re-start prevention timer has been counted down.

■ Outlet setpoint + restart conditions x 2 is < current outlet water temperature (cooling).

■ Outlet setpoint - restart conditions x 2 is > current outlet water temperature (heating).

Restart condition: restart condition in differential value programmed in the service/thermostat menu.

2 : differential expansion constant changeable 1 ~ 4 programmed in the service/thermostat menu.

Forced thermo-off

conditions

■ Outlet water temperature below FREEZE UP DIS setpoint forcing thermo-off.

■ Refrigerant temperature below REFR TEMP setpoint forcing thermo off.