aquatermic XK79 Manuel D'utilisation page 33

Note:
① Air function is only effective for units with air function and fresh air motorized
air valve (abbr. fresh air valve).
② The following table indicates the opening time of fresh air valve per unit of
time (60min) corresponding to the level of Air setting. Opening time of fresh air
valve is the initial N minutes per unit of time. Example: The level of Air setting
is set to 1, then unit starts timing and fresh air valve is open. 6 minutes later,
fresh air valve is closed and unit keeps running. After timing for 60minutes,
unit restarts timing and fresh air valve is open again. 6 minutes later, the valve
is closed and the cycle repeats.
Fig.4.6 Turn on Air Function
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Wired Controller XK79