Refrigerants
- Natural low-GWP refrigerant
Product range
- Three families: OS.A53, OS.A74 and OS.A85
- 11 sizes: 84 ... 535 m³/h at 2,900 rpm
Certifications
Applications
- Refrigerated MT and LT storage
- Blast chilling/freezing systems
- Process and A/C liquid chillers
- Ice production
- Ice rinks
Industry sectors
- Food and beverages industry
- Chemical and pharmaceutical industry
- Leisure and sports industry
- Marine and offshore industry
Features
Highlights
- Industry-leading efficiency in full and part load operation
- Easy parallel compounding for increased system capacity
Capacity regulation
- Mechatronic capacity control
- Easy control via flanged solenoid valves
- OS.A53 to OS.A74: Multistage capacity control (control pistons)
- OS.A85: Dual capacity control (single slider) for stepwise or alternatively stepless capacity control and V? adaption
- Suitable for VSD operation
- OS.A53: Speed range 1,450 ... 4,500 rpm
- OS.A74 and OS.A85: Speed range 1,450 ... 4,000 rpm
Product versions
- OSKA: MT and A/C applications
- OSNA: LT and MT applications
- OSHA: Higher condensing temperatures (heat pumps)
- OSKAB: LT stage in booster systems
Benefits
Reduced life cycle costs
- Very low operating costs due to outstanding high energy efficiency
- Long lifetime due to high robustness and low-vibration design
- Low maintenance costs due to service-friendly design
- BITZER Global Service network for quick spare part availability all over the world
Easy to apply
- Extensive documentation and BITZER know-how for technical support
- Wide range of matching accessories
- Easy calculation and selection via BITZER SOFTWARE
Reliability and flexibility
- All compressors are 100% factory-tested
- Integrated mechanical capacity regulation (CR) and start unloading (SU)
- Suitable for wide-range VSD operation
- Easy parallel operation of compressors due to internal discharge check valve
Accessories
Compressor-related accessories
- Wide range of suction and discharge bushings and discharge gas shut-off valves
- Matching couplings and coupling housings
- Adaptor and shut-off valve for economiser connection
- OS.A85: IQ MODULE for simplified compressor control and monitoring
System-related accessories
- Primary and secondary oil separators
- Oil separators for NH?: OA..A series
- Combined oil separators for NH?: OAC series; OAHC series
- Secondary oil separators for NH?: OAS series
- Oil coolers
- Water cooled oil coolers for NH?: OW..A series
- Liquid receivers:
- Horizontal Liquid receivers for NH?: F..A series
