Overview
The BAS/BNS series features single inlet centrifugal fans with integrated housing design, ideal for make-up air units, exhaust systems, and retrofit applications. With backward curved impeller design and variable width options, these fans deliver reliable performance in diverse HVAC configurations.
Available Models: BAS (Airfoil blade design) and BNS (Plate blade design) with widths from 250-1200mm
Parameters Comparison
| Specification | BAS | BNS |
|---|---|---|
| Blade Type | Airfoil | Plate |
| Max Airflow (CMH) | 90,000 | 60,000 |
| Max Pressure (Pa) | 2,700 | 2,700 |
| Width Range (mm) | 250-1200 | 250-1000 |
| Blade Count | 11 blades | 10 blades |
| Efficiency | ≈ 76% | 72-74% |
Advantages
BAS - Premium Choice
Higher Efficiency: Airfoil blade design achieves superior performance in MAU and exhaust systems.
Continuous Duty: Engineered for 24/7 operation with extended service intervals.
MAU/Exhaust Optimized: Specifically designed for make-up air and exhaust-only applications.
BNS - Reliable Standard
Cost-Effective: Plate blade construction offers competitive pricing without sacrificing performance.
Easy Maintenance: Straightforward design simplifies cleaning and component replacement.
Easy Integration: Simple integration with standard HVAC system components and ductwork.
Technical Features
Core Design
- Variable width construction for precise capacity matching
- Single inlet centrifugal configuration for compact installation
- Backward curved impeller for smooth, stable airflow
- Integrated housing eliminates external ductwork requirements
Multiple Configurations
Six standard configurations available to match specific installation requirements and ductwork orientations.
Performance & Compliance
- Direct or belt drive options for flexible motor selection
- ATEX certification optional for explosive atmosphere compliance
- AMCA certified performance and CE marked for European markets
- Tested and validated for rated operating conditions
Selection Guide
| Application Type | Recommended Model | Airflow Range | Typical Pressure |
|---|---|---|---|
| Small MAU Systems | BAS/BNS 250-400 | 5,000-25,000 CMH | 500-1,500 Pa |
| Medium MAU Systems | BAS 500-800 | 25,000-60,000 CMH | 1,000-2,000 Pa |
| Large MAU Systems | BAS 900-1200 | 60,000-90,000 CMH | 1,500-2,700 Pa |
| Exhaust Systems | BAS/BNS 300-800 | 10,000-60,000 CMH | 500-2,000 Pa |
| Retrofit Applications | BNS 250-600 | 5,000-40,000 CMH | 500-1,500 Pa |
Typical Applications
Make-Up Air Units (MAU)
Fresh air replacement systems for commercial and industrial facilities requiring guaranteed fresh air supply.
Exhaust Systems
Building exhaust, bathroom ventilation, kitchen hoods, and laboratory fume extraction applications.
Retrofit & Replacement
Direct replacement for existing single-inlet systems with minimal installation modification required.
Comparison with Competitors
| Characteristic | Insovent BAS/BNS | Competitor A | Competitor B |
|---|---|---|---|
| Max Airflow (CMH) | 90,000 (BAS) | 75,000 | 80,000 |
| Width Flexibility | 250-1200 mm | Standard widths | 250-1000 mm |
| Housing Integration | Full integration | Partial | Requires adapters |
| Configuration Options | 6 standard options | 3 options | 4 options |
| Blade Options | Airfoil & Plate | Plate only | Airfoil only |
| Drive Options | Direct & Belt | Direct only | Belt only |
| ATEX Available | Yes | No | Yes |
Price List
Detailed pricing available upon request.
Contact our sales team for custom quotes based on your specific configuration requirements.
Request QuoteCatalogue & Resources
Download technical documentation and selection tools for BAS/BNS series:
Technical Specifications
Complete dimensional drawings, performance curves, and mounting details for all BAS/BNS models.
Download PDF →Performance Charts
Selection curves and performance data to identify the right model for your airflow requirements.
Download PDF →Installation & Maintenance
Step-by-step guides for installation, commissioning, and ongoing maintenance procedures.
Download PDF →