Counter-flow heat exchanger
An aluminium counter-flow exchanger, Eurovent-certified and compliant with EN 308, up to 79.7% efficiency.
CORE
Double-skin heat recovery units with a Eurovent-certified counter-flow heat exchanger and EC fans.
- 5airflow models
- 500–3,000m³/hairflow range
- 79.7%max. EN 308 efficiency
- 50mmrock-wool side panels
01Overview
Counter-flow heat recovery
in a double-skin casing.
CORE units supply filtered fresh air and extract stale air, passing heat between the two airstreams through an aluminium counter-flow heat exchanger that is Eurovent-certified and complies with EN 308.
Five models cover 500 to 3,000 m³/h, with EC fans, a front electric heater and a choice of Basic or Professional control cards with Modbus-RTU.
EC fans
Backward-curved fans on EC motors, with five-stage speed control and a low specific fan power.
Double-skin casing
0.8 mm galvanised inner and painted outer skins, 50 mm rock-wool side panels and 30 mm top, bottom and service panels.
Supply and extract filters
M6 + F8 (or G4 + F9) on the supply and M5 on the extract, with filter monitoring on the control panel.
Free cooling
A bypass damper lets outdoor air skip the heat exchanger when free cooling is possible.
Two control cards
Basic or Professional control card with Modbus-RTU. Professional adds constant airflow, CO₂ control and an electric reheater.
02How it works
Two airstreams,
one counter-flow core.
Stale and fresh air pass each other in opposite directions through the aluminium exchanger, so the fresh air arrives tempered.
- 01
Extract
Stale air is filtered through the M5 extract filter and drawn into the exchanger.
- 02
Exchange
Heat passes through the aluminium plates of the counter-flow core. The two airstreams never mix.
- 03
Supply
Fresh air is filtered to F8 (or F9) and enters the space already tempered.
03Range
Five models,
500 to 3,000 m³/h.
Choose by nominal airflow, then check the model’s performance curve against your duct pressure in the catalogue.
Ranges across the five CORE models. Curves and dimensions for every model are in the technical catalogue.
04Specifications
Technical overview.
- Type
- Double-skin heat recovery unit
- Models
- 5 models: CR-T500, CR-T1000, CR-T1500, CR-T2300, CR-T3000
- Airflow
- 460 – 3,000 m³/h nominal (≈ 270–1,770 CFM)
- Heat exchanger
- Aluminium counter-flow, Eurovent-certified, EN 308
- Fans
- Backward-curved, EC motors, 5-stage speed control
- Casing
- 0.8 mm galvanised inner skin, 0.8 mm painted outer skin
- Insulation
- Rock wool, 70 kg/m³: 50 mm side panels, 30 mm top, bottom and service panels
- Filtration
- Supply M6 + F8 (or G4 + F9) · extract M5
- Heating
- Front electric heater with thermistor and stepped control
- Controls
- Basic or Professional control card, Modbus-RTU
- Operating temperature
- −20 to 50 °C
- Protection class
- IP 31
- Electrical
- 230 V / 50 Hz, single-phase
05Model data
Figures from
the catalogue.
As published in the CORE technical catalogue.
| Model | Nominal airflowm³/h | Max. airflow (0 Pa)m³/h | Min. airflowm³/h | Efficiency (EN 308)% | Sound power LwAdB(A) | Fan powerW | CurrentA | Weightkg |
|---|---|---|---|---|---|---|---|---|
| CR-T500 | 460 | 550 | 130 | 78.5 | 38.5 | 174 | 1.4 | 110 |
| CR-T1000 | 950 | 1,050 | 160 | 79.0 | 41.5 | 260 | 1.74 | 160 |
| CR-T1500 | 1,450 | 1,400 | 175 | 79.1 | 46.5 | 540 | 2.4 | 210 |
| CR-T2300 | 2,200 | 2,300 | 250 | 79.7 | 47.0 | 640 | 2.9 | 280 |
| CR-T3000 | 3,000 | 3,150 | 310 | 79.1 | 44.0 | 756 | 5.6 | 320 |
Fan power and current are for both fans together. Sound power is the total airborne level at nominal airflow. Power supply 1~230 V 50 Hz. Performance curves and dimension drawings are in the catalogue.
Complete the system
Related products.
Send us
your drawings.
Tell us the airflow, the application and any space limits. We will size the CORE unit and send the performance data.