Protect your designs from the things you canât control
Rawal APR Control is a variable-capacity solution for new & existing DX systems in a wide range of facilities and applications
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Improve performance of DX systems operating outside design parameters
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Reduce risk from unknown variables in your load calculations
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Help your contractor relationships - recommend an easy to install aftermarket solution
Rawal APR Control:
Modify any DX system to operate as a modulating variable capacity system
Rawal APR Control is a variable capacity enhancement for new and existing DX (direct expansion) systems in a wide range of commercial and industrial facilities and applications that helps provide:
- Tight temperature control
- Better humidity control
- Improved high-percentage outside air
- System protection and reduced operational downtime
New technologies may not be right for every situation
New technologies like variable speed HVAC give you new ways to serve your customers. But theyâre not right in every situation, can cost more, and may not be in-stock. Rawal APR Control is often easier to install and gets the job done right:
- Repair existing in-place equipment
- Avoid disagreements from call-backs and warranty issues
- Maintain lasting relationships and secure future opportunities by keeping your projects within budget
Simplify the equipment selection process
Accommodate load variability and changing criteria
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Satisfy the customerâs desire for versatile HVAC equipment to accommodate future expansion
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Reduce risk when selecting equipment for spaces with unknown variables
Avoid high humidity challenges in any application
Provide capacity modulation to extend compressor runtime
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Eliminate short cycling to keep the evaporator coil active
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Provide true load-matching performance with up to 80% turndown
Protect Against:
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High humidity
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Temperature fluctuation
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Excessive compressor cycling
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Evaporator freezing/liquid flood-back on VAV applications
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Unconditioned fresh air for ventilation requirements
Provide precision discharge air control
Optimize your HVAC equipment with less effort
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Meet tight temperature and humidity requirements in specialized applications (Dew Point Control)
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Achieve discharge air control within 1 degree deviation from temperature setpoint with the APR-E
New design & retrofit solution
- New codes demand increased ventilation and fresh air
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Provides variable capacity to standard DX units that werenât originally designed for custom applications
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Matches systemâs capacity to meet new and ongoing occupancy restrictions
- Value engineering option
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Lower up-front costs without sacrificing performance
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Ideal for projects with lead-time or budget constraints
For Key Benefits
Meeting & Exceeding Standard Equipment Energy Efficiency
- Energy Efficiency Engineers Improve your customerâs HVAC Energy Performance
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Saves power by reducing lift of compressor
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Lowers operating costs by optimizing the HVAC system
- OEMs Trusted and installed by major U.S. Manufacturers
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Major OEMs offer the APR Control as a factory-installed modification, or for field installation when their systems require retrofit upgrades or service
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Manufacturers use Rawal instead of FIOPS (factory-installed options) where accelerated delivery is required
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Standardize designs across different geographic regions
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Units with APR Control have the versatility to serve any environment
For Key Benefits
Build in success from the start
Create satisfied customers and contractors
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Help the contractor deliver a properly performing system with less stress, per your design
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Reduce call-backs and preserve warranty budgets, so contractors are more likely to install it than other options
Improve HVAC system energy performance & lower operating costs
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Save power by reducing lift of compressor to operate at a lower kW consumption
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Lower operating costs by reducing fan motor speed with minimal risk
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Reduce or eliminates the need for costly reheat of all types
For Trusted Solution
Trusted and installed by major U.S. manufacturers
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Major OEMs offer the APR Control as a factory-installed modification, or for field installation when their systems require retrofit upgrades or service
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Manufacturers use Rawal as a standard component in select equipment lines
For Trusted Solution
Addition of the APR helps equipment to satisfy local codes in any geographic region
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Standardize designs across different climates
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Units with APR Control have the versatility to serve any environment
HVAC Design Engineer Resources
APR Control for Ventilation & Fresh Air
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APR Control Benefits to the Design Engineer
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APR Control Advantages Over Hot Gas Bypass
When it was introduced to the HVAC industry 30 years ago, the closest comparable reference to the APR Control has been that it is similar to hot gas bypass. However, the APR Control is NOT hot gas bypass! Learn more about the advantages of the APR Control and how it is energy code compliant throughout the HVAC industry.
The Rawal APR Control is a variable capacity enhancement to DX HVAC systems.
The dynamic nature of plant growth cycles and cultivation phases demands air conditioning units that can adapt to changing environmental requirements. HVAC for grow rooms play a critical role in maintaining optimal temperature, humidity, and ventilation conditions to support healthy plant development and maximize crop yield.
Industrial manufacturing facilities experience fluctuating occupant loads, demanding robust and adaptable HVAC systems.
The dynamic nature of production processes and workforce activities necessitates air conditioning units capable of adjusting to changing operational demands.
Any commercial retail or office space faces the same challenge – too hot/too cold and too humid being the top complaints. These problems are often driven by varying occupancy across commercial office spaces with some companies on a regular 5-day in the office schedule while others are on a varied schedule.
The controlled environments within these facilities demand meticulous temperature, humidity, and air quality management. Fluctuating activities, such as experiments or surgeries, necessitate adaptable air conditioning units to maintain optimal conditions.
Restaurants and diners contend with fluctuating occupant loads, demanding adaptable air conditioning (AC) and heat pump (HP) systems. The ebb and flow of customers throughout the day necessitates HVAC units capable of adjusting to changing occupancy levels.
The dynamic nature of healthcare institutions, with varying patient admissions and discharges, requires air conditioning units to constantly adapt to changing occupancy levels. This flexibility is crucial for maintaining a comfortable and healthy environment for patients, staff, and visitors.
Schools face challenges with systems serving classrooms, providing fresh air for a lot of people in a small space.
This often leads to high humidity and equipment failure.