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AWN ECO+

EXHAUST FANS WITH HEAT RECOVERY

Exhaust air heat recovery (AWN) with heat pump for the on-demand exhaust air system

The AWN Eco+ is a compact and fully integrated exhaust air heat pump. Here, the ventilation unit and the heat pump are combined in one. This components’ closeness allows a direct transmission of the exhaust air heat to the refrigerant which enhances the device efficiency and energy saving. The ventilation adapts the airflows according to the needs in the dwelling thanks to Aereco’s humidity-sensitive exhaust air system: the on-demand management is ensured at any time.

The heat provided throughout the year is then released by the heat pump directly to the heating water of the building heating system. The AWN Eco+ drastically reduces the energy load for heating water.

CONTACT-US

Compact construction design: the set contains the fan, the heat exchanger and the heat pump

Optimum design layout: The heat from the fan’s motor is used

Optimum support for heating drinking water: The heat pump can supply a constant hot water temperature (up to 60 ° C), regardless of the flow / storage temperature

Maximum energy efficiency: little loss through the heat exchanger, since the extracted air releases heat through a direct evaporator

The heat pump adapts individually to the variation of the amount of heat extracted. A clocking of the heat pump is thereby avoided.

Direct connection of the installation to the heating water-grid

Description

Characteristics

Schematic

Gallery

Special evaporation

The compact design of the AWN Eco + allows efficient energy saving. The heat exchanger is designed as a direct vaporization and placed circularly around the exhaust fan. The extracted heat goes directly to the refrigerant and thus avoids additional transmission losses. The vaporizer is protected from dirtiness by an air filter. Thereby a replacement twice a year is necessary, but a more expensive cleaning of the heat exchanger is spared. Pressure drop monitoring warns building management system.

Smart adjustment and oriented towards the source of the heat pump – control of the resources

The heat pump’s source-oriented setting – ReSource Control – regulates the performance of the heat pump to the available extract airflow. So it is possible to achieve almost continuous operation which gives a high efficiency and operating time.

Recovery of heat losses from components

Due to the arrangement of the components the residual heat of the heat pump’s supply pump, fan and compressor can be gained again by recovering the heat from the exhaust air. Thanks to that design the total efficiency is further increased.

High efficiency of hot water supply pump

AWN Eco + has very efficient pump, with capacity, for the hot water intake is already integrated. In order to guarantee a constant temperature difference between the intake and the flow of the heat pump and to obtain it optimally, the feeding pump is always activated by an integrated measuring technology. For this purpose the evacuation is provided by the heat pump at a usable temperature level. With the Aereco ventilation system with heat recovery the building energy requirement can be further reduced.

		AWN Eco+ 111	AWN Eco+ 121	AWN Eco+ 131
Information
Installation		Outdoor	Outdoor	Outdoor
Recommanded setting pressure	Pa	130	130	130
Max. airflow (75%) at 130Pa	m³/h	1.650	2.400	3.375
Modulation range heat output (A20W35)	kW	2,5 – 8,4	3,2 – 10,4	6,6 – 22,2
Modulation range – exhaust air	m³/h	480 – 1.800	630 – 2.500	1.250 – 4.500
Minimum exhaust airflow required	m³/h	480	630	1.250
Max heating flow temperature	°C	55	55	55
Sound pressure level at 3m distance (75%) – Lp, A	dB(A)	54	50	49
Sound power level from the suction side device (75%) – Lw, A	dB(A)	66	62	67
Connection to the main station
Exhaust air – pipe connection (DN)	mm	355	400	560
Exhaust air – connection options		1 x horizontal	1 x horizontal	1 x horizontal
Integrated elastic connector for pipe		Included	Included	Included
Brine – Pipe connection		1 ” IG	1 ” IG	1 1/4 ” IG
Brine – Max. Airflow	m³/h	1.382	1.780	3.155
Brine – Permitted antifreeze		Ethylene glycol	Ethylene glycol	Ethylene glycol
Brine – Available external delivery pressure	kPa	48	53	52
Condensate – Pipe connection		Metal pipe (16mm)	Metal pipe (16mm)	Metal pipe (16mm)
Energetic data
Max recoverable exhaust heat – Heating period	MWh	27	34	59
Nominal heat output / COP (A20W35)		5,6 / 6,0	8,7 / 6,0	13,4 / 5,7
Nominal heat output / COP (A20W28)		5,6 / 8,2	8,7 / 8,2	13,7 / 8,0
COP (A20W40)		4,9	4,9	4,7
Refrigerant		R410A	R410A	R410A
Refrigerant charge	Kg	1,9	1,9	2,6
Ventilation and acoustic features
Max Airflow (100%) at 130Pa	m³/h	2.200	3.200	4.500
Soud pressure level – 3 meters distance at 100/50%	db(A)	61/46	57/44	55/44
Sound power level on suction side at 100/50%	dB(A)	67/59	68/54	74/57
Integrated pressure control
Digital pressure display		Included	Included	Included
Max. increase of pressure	Pa	300	300	300
Electrical data
Fan – Drive technology		EC-Motor	EC-Motor	EC-Motor
Compressor – Drive technology		Source-oriented drive technology with controlled performance	Source-oriented drive technology with controlled performance	Source-oriented drive technology with controlled performance
Repair switch		Included	–	–
Supply voltage	V / Hz	230 / 50	230 / 50	400 / 50
Max current consumption	A	12,3	14,2	14
Power consumption fan device (75%) at 130 Pa	W	224	313	440
SFP fan (75%) at 130Pa	W/m³/h	0,136	0,130	0,130
Max. fan power consumption	W	450	500	690
Max power consumption (complete device)	kW	2,42	2,9	6,9
Index fan protection	IP	54	54	54
Fan’s motor protection		Included	Included	Included
Contact for external enable signal		Included	Included	Included
Fault signal		Contact for group message, digital display on the device	Contact for group message, digital display on the device	Contact for group message, digital display on the device
Max acceptable exhaust air temperature	°C	40	40	40
Housing properties
Weight (unfilled unit)	kg	325	335	430
Material		Steel (galvanised)	Steel (galvanised)	Steel (galvanised)
Other components
Filter protection class (including filter monitoring)		G4	G4	G4
Integrate condensate tray with siphon		Included	Included	Included
Smoke detector and bypass for free outflow in case of fire		Included	Included	Included
Speed-controlled brine feed pump		Included	Included	Included

All data for exhaust air of 20° C and 50% rel. humidity. Data according to EN 14511 :2013

DIMENSIONS

	Component
1	Fan
2	Vaporizer
3	Differential pressure switch, filter monitoring
4	Main switch
5	Smoke detector
6	Compressor housing
7	Supporting
8	Plate-type heat exchanger
9	Air filters
10	Bypass
11	Controller
Terminals
Exhaust air heat pump – return	1″IG
Exhaust air heat pump – supply	1″IG
Condensate drain	¾”AG