58 Physical Properties D275 Width x Height x Depth mm 670 x 1180 x 295 Casing EPP + Polystyrene Colours White + black Connections Inner Diameter: Ø 180mm Internal diameter: Ø 160 mm Condensate drain Ø 32 mm (1 ¼”) Heat exchanger Polystyrene Material of inside section EPP / PP / ABS Weight 19 kg Power cable length 2 m (from side of unit) Mounting Ceiling mounting Wall mounting (vertical) Miscellaneous Properties D275 Energy class With 2 sensors (control factor 0.65): A+ Other: A Specific energy consumption (SEC) Cold kWh/(m².a) -79,6 Average -41,2 Warm -16,6 Maximum flow rate at 100 Pa ESP m³/h 275 Sound power level LWA dBA 45 Filters Filter supply air (175 x 500 x 25 mm) Standard: ISO 16890 Coarse 65 % (= G4) Optional: ISO 16890 ePM1 55 % (= F7) Filter exhaust air (240 x 170 x 27 mm) Standard: ISO 16890 Coarse 65 % (= G4) Summer by-pass Fully (100% modulating) Frost protection Imbalance or optional external heater Fans EC fan with backward curved blades Automatic Calibration Yes (constant pressure) Constant flow regulation Yes Passive cooling Automatic passive cooling control via ‘NightBoost’ function Operation Integrated display Use via remote controls and Room CO2 or Humidity Sensors Optional via smartphone/tablet (provided Duco Connectivity Board in device Sensors Integrated: pressure, temperature, onboard switch sensor External: CO2 (via optional Sensor), Humidity (via optional Sensor or measurement in ETA line), external Switch Sensor (voltage free input) (optional) Communication Standard: Duco RF, Duco Wired, Switch Sensor Expandable with Duco Connectivity Board: Modbus TCP (local), REST API (local or via cloud) - both via Ethernet or Wi-Fi Electrical Characteristics D275 Maximum electrical power 130 W (2 x 65W) Power Supply 230 V, 50 Hz Via 3-core power cable with earthed plug Contacts 0-10 V in/output Type of motor DC Energy conversion efficiency At 274 m³/h: 85% At 231 m³/h: 86% At 180 m³/h: 87% At 140 m³/h: 88% (1) Central demand control Technical specifications DucoBox Energy Sky D275 DucoBox Energy Sky DucoBox Energy Sky UK + G A+ G A+ With 2 or more sensors With 1 sensor/ manual/ clock
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