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AREX+ 160 Horizontal
Ductable air handling unit for false ceiling installation, made of galvanized sheet metal, with the function of air renewal and heat recovery.
AREX+ 160 horizontal is a dual-flow mechanical ventilation unit with heat recovery, designed for ceiling installation. This high-performance unit is engineered to provide the necessary airflow for air renewal in the environment and to recover heat from the exhausted air to transfer to the incoming air. The units, offering superior performance, are constructed with a sturdy sheet metal structure.
Each unit is equipped with:
- Visual signal for dirty filters to be connected to the appropriate clean contact.
- Hexagonal air-to-air heat exchanger, made of polystyrene, with counterflow and efficiency greater than 90% (TUV certified).
- Anti-freeze thermostat to protect the heat exchanger.
- Three-speed fans for continuous use, with reverse blades, integrated thermostat for over-temperature protection, and automatic restart.
- Automatic free-cooling with air flow control.
- External air filter and recovered air filter of class F7.
All units, compliant with European ERP directives and EN standards, are CE and DoP marked.
Application Field
The units are designed to perform the following functions in residential or small commercial environments:
- Provide renewal air, drawn from outside the building, with a flow rate of up to 160 m³/h of fresh air,
- Recover 90% of the heat from the stale air extracted from the rooms to heat (in winter) and cool (in summer) the new air before introducing it into the environment, with significant energy savings,
- Filter the air coming from the outside and the air extracted from the rooms.
They can be installed in false ceilings to be connected to a ventilation network.
The air renewal capacity of each unit is 160 m³/h.
AREX+ 160 horizontal ensures an air renewal rate of 0.5 Volumes/h for rooms with a floor area of 150 m² (if the height is 2.80 m).
Operating Mode
The machine is equipped with a centrifugal fan with reverse blades, with a maintenance-free motor (1), with thermal overload protection, which draws the exhausted air and sends it outside. A second fan (2), with the same characteristics, draws fresh air from the outside and sends it into the rooms. Through two heat exchangers, in series with each other, (3) the heat contained in the exhausted air is recovered and transferred to the fresh air. The cross-flow heat exchangers are made of aluminum. The external air is filtered (4), as is the exhausted air extracted from the technical rooms (5). When the temperature of the outside air drops to the point of risking the formation of ice in the heat exchangers, the fans stop for the necessary time. A machine control unit (8) oversees the correct operation. The condensate that forms in the heat exchangers is collected in the basin (6) and sent to the drainage pipe (7).
The air flow rate can be varied, according to the needs, either manually or automatically. Automatic variation is possible with the installation of sensors capable of detecting odors and pollutants (optional).
Technical Data
| Description | AREX+ 160 horizontal | |
| Code | VRHS16 | |
| Nominal airflow rate | m³/h | 160 |
| Efficiency | % | > 90 % |
| Recovered thermal power in winter | W | 1580 |
| Recovered thermal power in summer | W | 550 |
| Electrical power consumption at max speed | W | 75 |
| Electrical current consumption at max speed | A | 1.5 |
| Power supply | V/ph/Hz | 230/1+N/50 |
| Empty weight | kg | 27 |
| Noise level at max speed | dB(A) | 51 |
N.B.:
The heat exchange efficiency and recovered power in winter are for ambient air +20°C 50% RH and external air -5°C 80% RH. The recovered thermal power in summer is for ambient air +26°C 50% RH and external air 35°C 70% RH.
Under different working conditions, the values obtained will differ more significantly the further away they are from the nominal conditions.
Specification
Code VRHS16 – AREX+ 160 horizontal heat recovery unit with automatic free-cooling
False ceiling ductable air handling unit in galvanized sheet metal, with the function of air renewal and heat recovery from the exhausted air for maximum energy efficiency. Air renewal flow rate of 160 m³/h, counterflow exchanger efficiency greater than 90%, sound power 51 dB(A) according to UNI EN ISO 3746:1997. Built-in automatic free-cooling and clogged filter signal according to ErP 2018.
Graphs
Pressure drop diagram
Heat recovery efficiency diagram
INSTALLATION SUGGESTIONS
In case of ceiling installation (in false ceiling), it is recommended to use appropriately sized fasteners and brackets, which must be connected to the anti-vibration joints to be selected according to the type of structure to which they will be fixed. It is recommended to line the inside of the false ceiling with high-density sound-absorbing material and provide one or more openings for the extraction of the machine and the subsequent cleaning of the air filters, for the control of the refrigeration circuit, maintenance, and control of the electrical panel. Provide an opening in the false ceiling of sufficient size to completely disassemble and remove the machine.
