The 12m x 7m indoor pool with a considerable pool hall of 1224m3 at the Hotel Thalassa in Rozas was previously being controlled by a Calorex Delta 8 unit with R-22, which was nearing the end of its working life. After seeing the latest Delta advancements at the Piscina & Wellness trade exhibition in Barcelona last year, the hotel’s owner took the decision to upgrade to the new Delta 10 with PLC control panel. Having been very impressed with the performance of the old unit, he had no hesitation in opting for a Calorex unit again. The Calorex Delta is a range of fresh air dehumidification and ventilation systems with dynamic heat pump heat recovery to swimming pool water and air. With new touch screen technology and a remote internet connection, the upgraded Delta range allow

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