50 The DucoBox Energy Premium raises CHRV with heat recovery to the next level. Ideal for installation in an energy-neutral home of the future, automatic calibration and integrated 2-zone control with demand control ensure ultra-quiet, intelligent and energy-saving operation. DucoBox Energy Premium ZONE 1 ZONE 2 2 standard air filters Patented 2-zone system (optional) The day and night zone are being controlled separately by a valve which is integrated in the unit itself. Steering can happen based on time schedules or based on CO2 or humidity measurements, thereby significantly improving the energy efficiency! Favourable fan positioning
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