GEA CAIRfricostar - Aspectenvironmental.com
GEA CAIRfricostar - Aspectenvironmental.com
GEA CAIRfricostar - Aspectenvironmental.com
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Air mixing dehumidifier CAC<br />
<strong>GEA</strong> <strong>CAIRfricostar</strong><br />
Dehumidification Unit with Air Mixing Function<br />
Type CAC<br />
Functional description of the unit<br />
The <strong>GEA</strong> <strong>CAIRfricostar</strong> CAC is designed for private and small public swimming pools.<br />
The series is available in 2 model and 3 capacity sizes. The unit's function is to dehumidify<br />
and heat air in swimming pools in air mixing mode. The unit is delivered with a<br />
DDC controls which regulates all functions of the system on a fully automated basis.<br />
When in idle mode without dehumidification the air is recirculated in the swimming pool.<br />
When the humidity setpoint has been exceeded the unit switches into dehumidification<br />
mode. At this point the supply air fan is switched into speed 2 with the exhaust air fan<br />
maintaining air circulation at speed 1. The refrigeration unit is activated in order to start<br />
dehumidification. Using the bypass damper a certain part of return air is mixed without<br />
further treatment with dehumidified air that has passed through the refrigeration cycle.<br />
The dehumidification stage continues until the actual humidity value lies below that of<br />
the humidity setpoint. Then fans and refrigeration unit are deactivated.<br />
When in active hours swimming pool mode the fresh and exhaust air dampers are<br />
opened, the bypass damper is closed. The dehumidification takes place via the<br />
activation of the refrigeration cycle with both fans switched into speed 2.<br />
Using an optional pool water condenser a certain amount of excess energy produced<br />
by the refrigeration cycle can be fed back into swimming pool water.<br />
Sample selection of operation modes:<br />
Idle mode without dehumidification<br />
demand<br />
Idle mode with dehumidification<br />
demand<br />
Active hours swimming pool mode<br />
with humidification demand and pool<br />
water condenser<br />
Bypass damper mode, exhaust air fan is deactivated,<br />
supply air fan runs at low speed.<br />
Bypass damper mode, exhaust air fan runs at<br />
low speed, supply air fan runs at high speed.<br />
Compressor is switched on. The reheater<br />
provides the missing residual heat supply.<br />
Air mixing operation according to VDI,<br />
exhaust and supply air fans run at high<br />
speed. Compressor is switched on. The reheater<br />
provides the missing residual heat<br />
supply. Using a pool water condenser a certain<br />
amount of excess energy can be fed<br />
back into swimming pool water.<br />
PR-2008-0327-GB • Subject to modifications • Status 05/2009 43
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