Ambient / unheated
Air barrier for conditioned entrances where no heating medium is required.
Air Curtains
RAFAVENT air-curtain solutions create a directed air stream across an opening. Selection is governed by opening geometry, mounting position, wind and pressure imbalance—not doorway width alone.
Heated / recessed
Electric or hot-water heating and concealed mounting only within the documented selected package.
Industrial high-velocity
Higher-momentum discharge for large doors, loading areas and demanding wind exposure.
Preliminary configuration envelope
| Configuration | Opening width | Mounting height | Outlet velocity | Heating | Electrical |
|---|---|---|---|---|---|
| Commercial ambient | 0.9–2.0 m | Up to 2.5–3.0 m | 6–10 m/s | None | 1Ph/3Ph by package |
| Commercial heated | 0.9–2.0 m | Up to 2.5–3.0 m | 6–10 m/s | Electric / hot water | Project-specific |
| Recessed ceiling | 0.9–2.0 m | Up to 2.5–3.0 m | 6–10 m/s | None / heated | Project-specific |
| Industrial high-velocity | 1.0–3.0 m modules | 3–6 m subject to calculation | 12–20 m/s | Normally ambient / optional heat | 3Ph, project-specific |
Doorway and environmental inputs
| Input | Required definition |
|---|---|
| Opening geometry | Clear width, height and surrounding return surfaces |
| Mounting | Horizontal/vertical, distance from opening and available recess |
| External exposure | Prevailing wind speed/direction, façade pressure and shelter |
| Building pressure | Mechanical exhaust/supply imbalance and stack effect |
| Door operation | Open duration, cycles per hour and simultaneous doors |
| Temperature objective | Inside/outside design temperatures and acceptable infiltration |
| Contaminant objective | Dust, insects, odour or smoke separation—each requires a defined basis |
Engineering verification
| Check | Engineering requirement |
|---|---|
| Jet coverage | Discharge must span the full opening width |
| Terminal velocity | Verify usable velocity at floor/threshold, not only at outlet |
| Jet deflection | Adjust angle for wind and pressure imbalance |
| Sound | Check occupied-zone target and operating speed |
| Heating capacity | Calculate air heat duty; do not infer from motor power |
| Controls | Door switch, speed stage, thermostat and BMS interlock as documented |
| Installation interaction | Avoid obstructions, ceiling leakage and short-circuit airflow |
Required supply and control definition
| Scope | Required definition |
|---|---|
| Fan section | Wheel type, motor technology, speed stages and service access |
| Heating section | Unheated, electric or hot-water; capacity and protections required |
| Electrical | Voltage, phase, current, isolator and protection |
| Controls | Door contact, remote panel, thermostat, timer or BMS interface |
| Construction | Surface/recessed, casing finish, intake grille and mounting kit |
| Acceptance | Airflow/velocity evidence, sound basis, heating test and commissioning scope |
RAFAVENT
Engineering boundary: These are preliminary, non-certified configuration envelopes. Air-separation effectiveness, energy savings, infiltration reduction, temperature maintenance, dust or insect control and sound performance are not guaranteed without the exact selected unit, doorway conditions, verified calculations and project acceptance criteria.