Daikin EWYQ016BAWN [70/223] Outline of control hydrobox

Daikin EWYQ021BAWP [70/223] Outline of control hydrobox
ESIE11-05 Outline of Control (Hydrobox)
Functional Description 59
6. Outline of Control (Hydrobox)
6.1 Freeze Prevention
Freeze-up
prevention by
thermo off
condition
The freeze-up prevention is only active when the unit is in thermo OFF condition and field
setting [8-04] has been set to 1 or 2.
[Start condition]
AND/OR*:
Outdoor ambient temperature < 4°C
Leaving or return water temperature < 7°C
* AND/OR depending of setting [8 - 04] for further details see chapter of setting.
[Operation]
Pump will operate and if leaving OR return water < 5°C for 5 minutes, the unit will start up the
freeze-up prevention function to prevent too low temperatures.

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