Daikin EWYQ130DAYN [336/524] Load down request of 1 compressor

Daikin EWYQ130DAYN [336/524] Load down request of 1 compressor
Functional Control for a Standalone Unit ESIE06-05
2–110 Part 2 – Functional Description
3
1
2
4
5
Remark:
The EWYQ080DAYN* has a modified control in heating mode when ambient temperature is less than
or equal to 5 °C.
If ambient temperature is lesser than or equal to 5 °C, then two compressors always run together
(30 seconds between the startup of the first compressor and the second compressor).
Restart conditions
for inlet control
Restart conditions from normal thermo OFF or forced thermo OFF.
When after thermo OFF, all below conditions are met, the compressor can be restarted.
The start conditions are:
Restart prevention timer has counted down.
Load up signal is given by controller (thermostat).
Inlet water temperature is > inlet water setpoint + A (cooling).
Inlet water temperature is > to inlet water setpoint - A (heating).
Remark:
Parameter A= Restart condition value programmed in the service/thermostat menu.
Outlet control for
cooling mode
The illustration below shows the thermostat outlet control in cooling mode.
Outlet control for
heating mode
The illustration below shows the thermostat outlet control in heating mode.
Compressor Request
Outlet water temerature evaporator (°C)
Setpoint (°C)
>Load up request of 1 compressor
>Load down request of 1 compressor
>No action
Compressor Request
>Load up request of 1 compressor
>Load down request of 1 compressor
Outlet water temerature condenser (°C)
>No action
Setpoint (°C)

Содержание

Скачать