The CRS from Sicflux is a compact and efficient air exhaust/supply unit designed for spaces such as apartments, homes, and offices. This device performs two functions simultaneously: it supplies clean, fresh air from the outside while exhausting indoor air. During the exhaust process, the thermal energy from the indoor air is transferred to the heat recovery plates, either heating or cooling the incoming air depending on the season. This feature helps reduce energy costs by minimizing thermal losses.
Despite its advanced functionality, the CRS is designed to be compact and quiet, allowing for installation in small spaces. Its flexible ductwork setup enables the creation of air exhaust and supply systems with multiple inlets, adapting to different layouts and needs.
The 355 – 1700 and 355 – 2300 models are designed for ductwork with a 355 mm diameter and support high airflow rates.
About the Product
Key Features:
✲ Dual operation: efficiently supplies and exhausts air
✲ Heat recovery: boosts energy efficiency by reusing indoor thermal energy
✲ Compact design: ideal for space-constrained areas
✲ High-quality filters: complies with NBR 16401 [G3/G4/M5] standards
✲ Easy maintenance: filters accessible through an inspection hatch
✲ Sturdy construction: made from galvanized steel for enhanced durability
✲ Proven efficiency: offers 68% heat recovery and 65% humidity recovery efficiency
✲ Motor with ball bearings: ensures long service life and low noise
✲ Maximum airflow: up to 2239 m³/h (G4/M5)
✲ Safety: IP X4 / Class I
Benefits:
✲ Reduced thermal losses: by transferring thermal energy between airflows, the CRS reduces the need for additional heating or cooling systems✲ Energy efficiency: lowers operational costs and improves the performance of the indoor climate control system
Technical Specifications
Operating Logic
1 – Indoor air extraction (cold or hot):
The indoor air is driven by the motor, passes through a filter to remove impurities, and enters the heat recovery cell. Inside the cell, the air transfers its thermal energy to the internal elements and is then exhausted outside.
2 – Outdoor air supply:
The outdoor air is pulled in by the motor, filtered for purification, and then passes through the recovery cell. The cell absorbs part of the thermal energy from the extracted indoor air, and the conditioned air is then supplied back into the environment.
3 – Thermal energy recovery:
Indoor and outdoor airflows cross through the heat recovery cell. This process reduces thermal energy losses, optimizing the system and lowering operational costs for heating or cooling the air—making the environment more energy-efficient.
| MODEL | ||||
|---|---|---|---|---|
| 355 – 1700 | 355 – 2300 | |||
| Maximum Flow Rate | m³/h | Exhaustion | 1678 | 2239 |
| Inflation | 1517 | 2017 | ||
| CFM | Exhaustion | 987 | 1317 | |
| Inflation | 892 | 1187 | ||
| Frequency [Hz] | 50/60 | |||
| Total Power Absorbed [W] | 1150 | 839 | ||
| Sound Pressure Level [dBA] | 61 | 66 | ||
| Voltage Type [V] | Single phase | Single phase | ||
| Voltage [V] | 230 | 230 | ||
| Maximum Pressure [mmca] | Exhaustion | 51 | 80 | |
| Inflation | 50 | 81 | ||
| Duct Diameter [Pol] | 355×355 | 355×355 | ||
| Weight | 118 | 123 | ||
| Insulation Material | Expanded low-density polyethylene – closed cells (LDPE) laminated with aluminum film. | |||
| Exhaust filter | G3 | G3 | ||
| Inlet filter | G4/M5 | G4/M5 | ||
| Thermal recovery efficiency | 68 % | |||
| Moisture recovery efficiency | 65 % | |||
| Recovery mode and material | Cross Flow with Enthalpy paper | |||
Models
| MODEL | Dimensions (mm) | Weight | ||
|---|---|---|---|---|
| A | B | C | ||
| CRS 355 – 1700 | 1100 | 976 | 460 | 118 |
| CRS 355 – 2300 | 1308 | 1038 | 557 | 123 |