Ventilation unit with cooling – fresh and cool air even on the hottest day

WESTON-AV-HCVENT-W-1100 is a ventilation unit with cooling that combines heat-recovery ventilation and a DC inverter heat pump. A standard ventilation unit brings the same warm air into the room in summer as is outside. This unit cools the supply air before it reaches the room, so the fresh air is pleasantly cool even in hot weather. In winter, the heat pump works in reverse and heats the supply air. With an airflow of 1100 m³/h and a cooling capacity of 9.08 kW, the unit is suitable for larger private houses, offices, classrooms, and commercial spaces. There, summer overheating is often a bigger problem than winter cold.

Why choose a ventilation unit with cooling?

• Cool fresh air - nominal cooling capacity 9.08 kW, maximum 9.39 kW.
• Heating in winter - the same device heats the supply air, the nominal heating capacity is 8.84 kW.
• Dehumidification – the appliance removes excess moisture, which makes the summer heat more tolerable.
• Large volume of air – 1100 m³/h in ventilation, cooling, and heating modes.
• Efficient heat recovery – hexagonal counterflow enthalpy heat exchanger, temperature efficiency up to 78%.
• DC inverter compressor and EC fans operate energy-efficiently. You can choose between 10 speeds and 5 operating modes, and the COP is over 6.
• Automatic bypass valve switches the device to 100% fresh air mode in suitable weather.
• Operates at outside temperatures from −15 °C to +50 °C, complies with ErP 2018 requirements and uses R32 refrigerant.

Installation

The unit is installed on the floor, so there is no need for strong ceiling support or work at heights for the large and heavy unit. Side horizontal duct connections with a diameter of Ø245 mm keep the duct pressure losses low. The unit uses a 220 V single-phase power supply.

Management and integration with building systems

The device is controlled via a touch-sensitive wall panel or the Smart Life app. The device supports Wi-Fi and Zigbee connectivity, as well as Amazon Alexa and Google Assistant. In larger buildings, group control, interconnection of multiple devices, and the RS485 interface, through which the device can be connected to building automation, are useful. Air quality can be monitored with CO₂, humidity, TVOC, and PM2.5 sensors. Additional features include:

• temperature and humidity control,
• weekly timer and scenarios,
• weather forecast-based management,
• automatic defrost,
• filter change and fault notifications.

Technical data

Nominal airflow	1100 m³/h
Extraction air volume (ventilation / heating-cooling)	1100 / 1100 m³/h
External static pressure	100 Pa
Cooling
Nominal / maximum cooling capacity	9.08 / 9.39 kW
Input power / operating current	1352 W / 6,1 A
Fuel
Nominal / maximum heating capacity	8.84 / 9.08 kW
Input power / operating current	1311 W / 5.87 A
Ventilation mode
Temperature efficiency (heating / cooling)	78% / 74%
Enthalpy efficiency (heating / cooling)	71% / 68%
Input power / current	751 W / 3.75 A
General information
Noise level	42/47 dB(A)
Toilet	220 V, 1 phase, 50/60 Hz
Dimensions (L × W × H)	1510 × 650 × 965 mm
Weight	200 kg
Channel connection diameter	Ø245 mm
Vent height / base height	40 / 40 mm
Drain pipe	G1/2, 21 mm
Refrigerant / quantity	R32 / 610 g
Operating temperature	-15 to +50 °C

For a smaller building, the compact model WESTON-AV-HCVENT-W-400 (400 m³/h, only 450 mm wide) is suitable.