CAIRpool – DDC Controller Unit function
FläktGroup DC-2015-0116-GB 2020-01/R1 • Subject to modifications3
1 Unit function
CAIRpool units are designed as dehumidifier units for swimming pools.
The different unit models are based on the strategy of dehumidification with outdoor
air. Depending on the swimming pool humidity, different quantities of fresh air are sup-
plied to the swimming pool for dehumidification.
P_X Design The basic model of CAIRpool dehumidifiers for swimming pools comprises a unit
series with highly efficient heat recovery of the P_X series.
P_I Design The units with an inverter-controlled heat pump P_I are based on this model. The heat
pump enables an additional stage of heat recovery for the swimming pool.
Units with a heat pump can contain a pool or fresh-water condenser as an option. In
this case, a part of the heat pump capacity can be released directly to the pool water
or to a water treatment plant (please consider water quality)
P_R Design The P_R series is available to the user as premium solution. The swimming pool is
heated via the inverter-controlled heat pump and can be cooled to nominal tempera-
ture in summer or in case of high external temperatures through a changeover switch.
When the plants are equipped with a heat pump, the heat pump provides the residual
ventilation heat for heating the swimming pool. In winter or at commissioning, a down-
stream heater bank provides a sufficient supply of heat. Furthermore, the reheater coil
regulates the heat function when the heat pump is not in operation or disabled by the
controller because of insufficient quantities of outdoor air.
Units with a heat pump can contain a pool or fresh-water condenser as an option. In
this case, a part of the heat pump capacity can be released directly to the pool water
or to a water treatment plant (please consider water quality)