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4. CONTROLS
4.9 Control description DanX 1/2/3 XD
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.
4.9.1 Humidity control
Humidity level in the pool hall is lower or equals the set point:
•
The outdoor / exhaust air dampers are partly open in day time (Set point Fresh air
amount - Minimum_Fresh_Air) and will be closed in night time.
Humidity level in the swimming pool hall is higher than the set point:
•
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 - Minimum_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.
4.9.2 Temperature control
Temperature level in the swimming pool hall equals the set point:
•
The heating coil will be stopped.
•
The outdoor / exhaust air dampers are partly open in day time (Set point Fresh air
amount - Minimum_Fresh_Air) and will be closed in night time.
Temperature level in the pool hall is lower than the set point:
•
The heating coil is running.
•
The outdoor / exhaust air dampers are partly open in day time (Set point Fresh air
amount - Minimum_Fresh_Air) and will be closed in night time.
Temperature level in the swimming pool hall is higher than the set point:
•
The heating coil will be stopped.
•
The outdoor / exhaust air dampers will open more to get more cooled outdoor air to
the pool hall (overriding the set point Fresh air amount - Minimum_Fresh_Air).
Secondly the by-pass damper will slowly open to avoided heating the outdoor air in
the heat exchanger.
•
The controller will give a digital signal to an optional cooling unit.
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