YVAA Variable Speed Drive Screw Chiller
150-575 TR (525 - 2,020 kW)
With more than 22,000 units installed and proven globally, the YVAA VSD screw chiller has excelled in a variety of applications.
- Customizable for specific job requirements
- Patented, liquid-cooled, variable-speed drive technology
- Available for performance testing in an AHRI-certified lab
Proven Globally. Tailored for You.
The YORK® YVAA Air-cooled Chiller has been proven globally in some of the world's most challenging conditions. With a patented, liquid-cooled, variable-speed drive that produces 15-25% annual energy savings, IPLV as high as 21.3 EER, and up to 0.25 kW/TR reduction in energy use when replacing existing chillers, YORK® has the experience to tailor and tune the YVAA specifically for you.
Benefits
LOWER ANNUAL ENERGY COSTS
Reduce annual energy costs as much as 50% with a liquid-cooled, variable-speed drive for lowest kW/ton at design and off-design conditions.
TRUSTED RELIABILITY
An efficient motor design provides a wide operating range while refrigerant cooling and thermal protection increase compressor reliability.
GREATER VALUE
The YVAA can be tailored and tuned to match the capacity, efficiency, sound and footprint of specific applications.
Quick Start
After power is interrupted, it can take a standard chiller up to 10 minutes to restart. But with the Quick Start feature, YVAA chillers can restart within seconds after power is restored. YVAA chillers feature an industry-leading compressor restart (upon power being restored) of 34 seconds.
Because YVAA chillers contain a variable-speed drive, there is no inrush of current. As a result, all compressors can be started together. This allows a faster ramp-up to full capacity than possible with a typical chiller.
Learn About Quick Start
Because YVAA chillers contain a variable-speed drive, there is no inrush of current. As a result, all compressors can be started together. This allows a faster ramp-up to full capacity than possible with a typical chiller.
Variable-speed Drive
VSDs help reduce energy consumption – particularly at off-design conditions – and can help lower annual energy costs as much as 50%. Our patented, liquid-cooled VSDs also require less maintenance, with glycol replacement required only every five years. And the variable-speed design dramatically reduces sound levels at off-design conditions – up to 16 dBA. Designed and manufactured by Johnson Controls, a 100% liquid-cooled VSD is standard on the YVAA.
Proven Compressor Technology
The YVAA incorporates advanced, patented variable volume index (VI) technology in a proven design. Our VI design optimizes the compression ratio of the compressor to match the conditions between the evaporator and condenser. This optimized compression ratio prevents over-compression to minimize energy consumption. Every compressor is run-tested at the end of the production line to ensure reliable operation.
Related Products
- Packaged controls for single-point convenience to easily accommodate process or building changes
- Intelligent controls also optimize the balance between using fans to move air over the free-cooling coils
- Variable-frequency inverter technology enables a zero-inrush soft start and a high-displacement power factor across the entire operating range
- Integrated compressor VSD standard with 50% fewer moving parts
- Excellent capacity control, high power factor and soft start
- Easy access to display and control features via control display access door
- Standard ambient range up to 125°F
- Optional hot-gas bypass
- Optional factory-mounted hydronic-pump kit
- Industry-leading IPLV with variable-speed drive fans
- Optimized compressor for better part-load efficiency
- Building automation system (BAS) communications