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GEA CAIRfricostar - Aspectenvironmental.com

GEA CAIRfricostar - Aspectenvironmental.com

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<strong>GEA</strong> <strong>CAIRfricostar</strong><br />

Dehumidification Unit with Air Mixing and Heat Pump Function<br />

Type CWC<br />

Functional description of the unit<br />

The <strong>GEA</strong> <strong>CAIRfricostar</strong> CWC is designed for private and small public swimming pools.<br />

The series is available in 2 sizes. The unit's function is to dehumidify and heat air in<br />

swimming pools in air mixing mode. The unit is delivered with a DDC controls which<br />

regulates all functions of the system on a fully automated basis.<br />

Sample selection of operation modes:<br />

This unit type is additionally equipped with an efficient heat recovery system. When in<br />

idle mode without dehumidification the air is recirculated in the swimming pool. When<br />

the humidity setpoint has been exceeded the unit switches into dehumidification mode.<br />

For this purpose the supply and exhaust air fans are activated to run at high speed with<br />

continuous mixing of outdoor air. The dehumidification stage continues until the actual<br />

humidity value lies below that of the humidity setpoint. After that the fans are deactivated.<br />

Idle mode without dehumidification<br />

demand<br />

Active hours operation mode with<br />

dehumidification demand<br />

Idle mode with dehumidification<br />

demand<br />

Bypass damper mode, exhaust air fan<br />

is deactivated,<br />

Supply air fan runs at low speed.<br />

Air mixing operation according to VDI, exhaust<br />

and supply air fans run at high speed.<br />

The reheater provides the missing residual<br />

heat supply.<br />

Air mixing operation, exhaust and supply air<br />

fans are operating at high speed. The reheater<br />

provides the missing residual heat supply.<br />

Active hours/summer operation mode<br />

Summer mode / inactive operating „free night cooling“<br />

Fresh air mode, exhaust and supply air fans run at high speed. Heat<br />

recovery is not used thanks to a damper system.<br />

If the swimming pool is overheated during the night time or idle period<br />

the unit ventilates only in outdoor/exhaust air mode. The fans run at<br />

high speed and provide cooling of the swimming pool to reach the<br />

setpoint temperature. In case of an optional bypass of the heat recovery<br />

system the heat recovery is not used thanks to a damper system<br />

and at the same time the air volume flow is increased.<br />

PR-2008-0327-GB • Subject to modifications • Status 05/2009 49<br />

Air mixing dehumidifier CWC

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