S&P Centrifugal In-Line Fans: VENT-NK / VENT-N Series
Product Overview
The S&P VENT-NK and VENT-N series are centrifugal in-line duct fans designed for efficient ventilation. They are manufactured from high-grade corrosion-resistant pressed galvanized steel and come standard with a terminal box and a robust mounting foot. All models feature an enclosed type, single-phase external rotor motor with a factory-matched backward-curved, non-stalling impeller.
Models VENT-355N and VENT-400N are constructed from sheet steel protected against corrosion by a cataforesis primer and finished with black polyester paint.
Motors and Electrical Supply
- Models VENT-100NK to VENT-250NK: Motors are IP44 rated, with Class B insulation, ball bearings, and safety thermal overload protection.
- Model VENT-315NK: Motor is IP44 rated, with Class F insulation, ball bearings, and safety thermal overload protection.
- Models VENT-355N and VENT-400N: Motors are IP54 rated, with Class F insulation, ball bearings, and safety thermal overload protection.
Electrical Supply:
- Single phase: 230V - 50/60Hz.
- Three phase: 230/400V - 50Hz (for models VENT-355N-T and VENT-400N-T).
All single-phase models are speed controllable by voltage variation. Three-phase models are speed controllable by a frequency inverter.
Additional Information: Impellers for models 100 to 250 are manufactured from injection-moulded plastic.
Mounting Foot: Supplied with the unit as standard for models VENT-100NK to VENT-315NK.
Technical Characteristics
Before installation, verify that the product's electrical characteristics (voltage, power, frequency, etc.) listed on the data plate match the intended electrical supply.
| Model | Voltage (V-Hz) | Speed (rpm) | Max. Absorbed Power (W) | Max. Absorbed Current (A) | Max. Airflow (m³/h) | Sound Pressure Level* (dB(A)) (Inlet/Outlet/Radiated) |
Max. Ambient Temp. (°C) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| VENT-100NK | 230-50/60 | 2600 | 61 | 0.3 | 290 | 56 / 54 / 44 | -20/+60 | 3 |
| VENT-125NK | 230-50/60 | 2620 | 60 | 0.3 | 390 | 57 / 54 / 42 | -20/+60 | 3 |
| VENT-150NK | 230-50/60 | 2550 | 95 | 0.4 | 750 | 59 / 56 / 42 | -20/+60 | 5 |
| VENT-160NK | 230-50/60 | 2560 | 96 | 0.4 | 760 | 59 / 55 / 42 | -20/+60 | 5 |
| VENT-200NK | 230-50/60 | 2720 | 147 | 0.6 | 970 | 60 / 58 / 43 | -20/+60 | 5 |
| VENT-250NK | 230-50/60 | 2720 | 149 | 0.6 | 1,030 | 62 / 61 / 50 | -20/+60 | 6 |
| VENT-315NK | 230-50/60 | 2790 | 257 | 1.1 | 1,370 | 65 / 64 / 48 | -20/+60 | 8 |
| VENT-355N | 230-50/60 | 1404 | 287 | 1.2 | 2,690 | 58 / 61 / 40 | -40/+70 | 18.8 |
| VENT-400N | 230-50/60 | 1380 | 536 | 2.3 | 3,890 | 59 / 63 / 49 | -40/+50 | 22.2 |
| VENT-355N T | 230/400-50 | 1370 | 270 | 1.1/0.6 | 2,640 | 58 / 60 / 43 | -40/+70 | 17 |
| VENT-400N T | 230/400-50 | 1370 | 492 | 1.9/1.1 | 3,830 | 60 / 62 / 47 | -40/+50 | 22 |
* Sound pressure level in dB(A) measured at 1.5m, in free field condition, at maximum airflow.
Dimensions
VENT-100NK to VENT-315NK Series:
| Model | A | B | C | D | D2 | E* | F* | G* | H* | J* |
|---|---|---|---|---|---|---|---|---|---|---|
| VENT-100 NK | 195 | 23 | 243 | 98 | ||||||
| VENT-125 NK | 197 | 27 | 243 | 123 | ||||||
| VENT-150 NK | 213 | 22 | 333 | 147 | ||||||
| VENT-160 NK | 220 | 27 | 333 | 157 | ||||||
| VENT-200 NK | 223 | 25 | 333 | 198 | ||||||
| VENT-250 NK | 205 | 27 | 333 | 248 | ||||||
| VENT-315 NK | 232 | 25 | 401 | 312 |
VENT-355N/VENT-400N Series:
| Model | A | B | C | D | D2 | E* | F* | G* | H* | J* |
|---|---|---|---|---|---|---|---|---|---|---|
| VENT-355 N | 410 | 25 | 508 | 354 | 314 | 552 | 100 | 170 | 587 | 10.5 |
| VENT-400 N | 431 | 25 | 568 | 399 | 354 | 628 | 100 | 185 | 647 | 10.5 |
* Support brackets supplied in the packaging, not fitted on the fan.
Performance Curves and Acoustic Data
The following sections detail the performance characteristics and acoustic data for various models in the VENT-NK/VENT-N series. Performance data is in accordance with ISO 5801.
Key for Performance Curves:
- qv: Airflow in m³/h
- psf: Static pressure in Pa
- P: Input power in W
- SFP: Specific fan power in W/m³/s (indicated by blue curves)
Performance Curve Descriptions:
- VENT-100NK to VENT-315NK Series: These pages present performance curves showing Static Pressure (Psf) vs. Airflow (qv) for different voltage inputs (e.g., 140V, 170V, 230V). Below these, Input Power (P) vs. Airflow (qv) curves are shown for the same voltage inputs. Each curve is labeled with the corresponding voltage.
- VENT-355N, VENT-400N, VENT-355N T, VENT-400N T: Similar performance curves are presented, showing Static Pressure (Psf) vs. Airflow (qv) and Input Power (P) vs. Airflow (qv) for different voltage inputs.
Acoustic Data Tables: Detailed sound pressure levels (LwA) are provided in tables for various frequency bands (63 Hz to 8000 Hz) and measurement points (Inlet, Outlet, Radiated) for each fan model. The tables also include a final LwA value.
Mounting Accessories
A range of accessories are available to complement the VENT-NK/VENT-N series fans:
- MBE: Electric heater.
- MBW: Hot water coil.
- SIL: Circular sound attenuators.
- MFL-G4: Filtration box with G4 grade filtration.
- MFL-F: Box in galvanized steel for inserting MFR F5, F6, and F7 filters.
- Mounting foot: Supplied with the unit as standard.
- ACOP-VENT: Flexible connectors.
- DEF-VENT: Protection grille.
- GSA-MO: Aluminium flexible ducting.
- GSI-MO: Insulated aluminium ducting.
- CX: Worm drive duct connectors.
- BOC: Metal inlet valves.
- BOR: Plastic inlet valves.
- GCI: Circular inlet grilles.
- VR: GCI mounting frame.
- GRI: Interior square grilles.
- RP: GRI mounting frame.
- CAR: Backdraught shutters.
Electrical Accessories
Various electrical accessories are available:
- REB: Electronic single-phase speed controllers.
- RMB: Autotransformer single-phase speed controllers.
- PULSER: Electric heater controllers for 1Ph models up to 3600W and 3Ph models up to 6400W.
- TTC 2000: Electric heater controllers for 3-phase models.
- PARO/MARCHA 5P and 8P: ON/OFF electrical isolation switch.
- TG-R: Room wall-mounted temperature sensor.
- TG-K: Duct temperature sensor.