Exhaust air heat recovery (AWN) with heat pump for the on-demand exhaust air system
AWN Connect combines AWN Basic with Connect WP, a brine / saltwater / water heat pump designed specifically for AWN. While the AWN Basic is installed where the exhaust ducts end – above or under the roof – the Connect WP is designed for indoor installation and can be placed in the boiler room.
On the cold source side, the Connect WP cools a brine circuit up to 2 ° C and feeds the cold brine to the AWN Basic heat exchanger using an integrated feed pump. The heat is extracted from the stale air and returned to the heat pump. The heat pump raises the temperature level of the heat produced and makes it available the whole year through the heating water to the building’s heating system.
2 types of ventilation module: RV for indoor installation & DV for outdoor installation
Low energy consumption: the EC engine meets the requirements of EnEV
Constant pressure control: ideal for demand-controlled ventilation
Easy to maintain: motor easily accessible by a trapdoor to clean the blades
ReSource Control - Intelligent and Source-Oriented Heat Pump Control. Always high performance for the best efficiency.
Silent: acoustic foam on the entire envelope and sound trap available on request, optional.
Description
Characteristics
Schematic
Gallery
Exhaust air heat pump efficient for heat generation and heat recovery
Stale air is extracted according to the air needs of the inhabitant of the dwelling and according to the indoor air quality of the dwelling. This stale air contains energy that is recovered and sent to the power plant. The AWN Connect includes the AWN Basic (DV / RV), and a separate heat pump specifically designed for AWN: Connect WP. In combination with an air extraction module (AWN Basic) for outdoor or indoor installation, the AWN Connect system can be flexibly adapted to individual building projects. In addition, several AWN Basic can be used with a unique Connect WP.
Intelligent and Source-Oriented Heat Pump Control – ReSource Control
The source-oriented heat pump control – ReSource Control – always adjusts the heat pump flow according to the volume flow of exhaust air available. This resulted in near-continuous operation and extended operating time for improved homogeneity and efficiency.
Highly efficient feed pumps
Into the Connect WP, a highly efficient and power-controlled heating water feed pump is already integrated. In order to guarantee a constant temperature distribution between the outgoing flow and the return of the heat pump and thus to obtain the best performances, the supply pump is always adapted to the requirements thanks to an integrated measuring technology. In the Connect WP, a pump for the distribution of brine and a pump for the distribution of heating water are already integrated.
Ventilation unit installation
Air flow range (effective volume flow)
Fan model
Heat pump model
AWN DV-A40 Connect 121
Outdoor
480 – 1.650 m³/h
AWN DV-A40 Basic 101
Connect WP120
AWN DV-A50 Connect 121
Outdoor
480 – 2.475 m³/h
AWN DV-A50 Basic 101
Connect WP120
AWN DV-A50 Connect 131
Outdoor
1.250 – 2.475 m³/h
AWN DV-A50 Basic 101
Connect WP130
AWN DV-A70 Connect 131
Outdoor
1.250 – 3.600 m³/h
AWN DV-A70 Basic 101
Connect WP130
AWN RV-A40 Connect 120/121
Indoor/Outdoor
480 – 1.275 m³/h
AWN RV-A40 Basic 100/101
Connect WP120
AWN RV-A50 Connect 120/121
Indoor/Outdoor
480 – 1.950 m³/h
AWN RV-A50 Basic 100/101
Connect WP120
AWN RV-A50 Connect 130/131
Indoor/Outdoor
1.250 – 1.950 m³/h
AWN RV-A50 Basic 100/101
Connect WP130
Connect WP120
Connect WP130
Information
Installation
Indoor
Indoor
Modulation range heat output (A20W35)
kW
2,6 – 8,6
6,8 – 22,6
Modulation range – exhaust air
m³/h
480 – 1.800
1.250 – 4.500
Minimum exhaust airflow required
m³/h
480
1.250
Max heating flow temperature
°C
55
55
Sound pressure level, housing radiation
dB(A)
54
58
Sound pressure level at 3m distance Lp, A
dB(A)
31
33
Connection to the main station
Brine – Pipe connection
1 1/4 ” IG
1 1/4 ” IG
Brine – Flow
m³/h
1,34
2,76
Brine – Permitted antifreeze
Ethylene glycol
Ethylene glycol
Brine – Available external delivery pressure
kPa
52
48
Water-connections heating circuit
1 1/4 ” IG
1 1/4 ” IG
Water-max. volume flow heating circuit
m³/h
1,805
3,155
Water available ext. delivery pressure
kPa
48
42
Energetic data
Nominal heat output / COP (A20W35)
kW / –
6,06 / 5,66
13,62 / 5,33
Nominal heat output / COP (A20W38)
kW / –
5,82 / 7,35
13,74 / 7,18
COP (A20W40)
4,6
4,5
Refrigerant
R410A
R410A
Refrigerant charge
kg
1,6
2,39
Electrical data
Compressor – Drive technology
Source-oriented performance controlled
Source-oriented performance controlled
Repair switch
integriert
integriert
Supply voltage
V / Hz
230 / 50
400 / 50
Max current consumption
A
10,2
10,4
Max power consumption
kW
2,25
6,2
Contact for external enable signal
Included
Included
Fault signal
Contact for group message, digital display on the device
Contact for group message, digital display on the device
Housing properties
Weight (overall device)
kg
95
140
Material
Steel (galvanized and powder coated)
Steel (galvanized and powder coated)
Other components
Feed pump brine circuit
Included
Included
Surge tank brine circuit
Included
Included
Feed pump heating circuit (speed controlled)
Included
Included
All data for exhaust air of 20°C and 50% rel. Humidity and for brine from 35% Ethylene glycol and water.
Information according to EN 14511 : 2013
Heat pump Connect WP120 and WP130
Dimensions
Connect WP120
Connect WP130
Height (A)
mm
976
1126
Width (B)
mm
605
605
Depth (C )
mm
603
773
Weight
kg
95
140
For more detail about fan module dimensions, please refer to AWN Basic, section « Schematics »
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.
In this version, AWN can be associated with third-party heat pumps via a brine buffer. The AWN Basic is a combination of an air exhaust module and a heat exchanger to ensure heat recovery.
