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4. CONTROLS
4.6 Control description DanX 1/2/3 HP
The control strategy for a swimming pool unit is quite complex, therefore this user manual
will only descript the basic functions of the control system. In generally the humidity control
has always the highest preference, before the temperature control.
4.6.1 Humidity control
Humidity level in the pool hall is lower or equals the set point:
•
The compressor will be stopped. If the compressor runs, the temperature control has
taken over.
•
The outdoor / exhaust air dampers are partly open in day time (Set point Fresh air
amount - Min_Fresh_Air) and will be closed in night time.
Humidity level in the swimming pool hall is higher than the set point:
•
The compressor will start to dehumidify.
•
If the dehumidification capacity of the compressor is not efficient enough, the outdoor /
exhaust air dampers will open more to get more dry outdoor air to the pool hall
(overriding the set point Fresh air amount - Min_Fresh_Air)
If in summertime the outdoor air temperature is higher than 23°C, condense in the pool hall
is no longer an issue. Therefore the humidity set point will be moved upwards with 1% for
each °C above 23°C outside, but maximum by 5%. This means with a set point of 55% R.H.
the maximum possible relative humidity is 60% at an outdoor temperature of 28°C.
IMPORTANT
If the compressor does not start, even if the humidity in the pool hall is above the set point
there can be the following reasons:
•
The outdoor / exhaust air damper is open >90% (normally in summertime).
•
The temperature control has taken over with free or active cooling.
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