Resources

Optimization is only possible with the power of DX modulation. Modulation to match changing load conditions reduces or eliminates cycling. There is a wide range of studies recognizing that increasing the runtime by just 4 minutes (from 5 to 9 minutes after start) can improve the efficiency up to 17% Read More

Rawal Devices manufactures the APR Control & APR-E Valve in many different sizes for a variety of refrigerants APR Model # Modulation Capacity APR-410-1 1.5 tons APR-410-2 2.5 tons APR-410-3 3.5 tons *APR-410-5 5.5 tons APR-410-6 6.5 tons APR-410-10 10 tons APR Control Application Example System Tonnage 5 Tons 5… Read More

The concept of Optimization has become prevalent in the HVAC industry. It is an agreed upon term that refers to controlling the HVAC systems to provide the necessary amount of cooling to maintain building comfort demands at energy efficient levels to utilize the least amount of power consumption. Read More

APR Control Energy Efficiency The APR Control provides alternative design strategies that have been proven to reduce total power consumption of a new or existing system installation/design. Direct Savings with the APR Control The APR Control provides direct compressor power savings. Reduces compressor lift in direct expansion (DX) systems Reduces… Read More

A system that has the ability to modulate capacity also can provide better reliability and fewer operating problems. These often are related to stresses placed upon the system’s compressor. Short cycling, low airflow, and other system problems can easily be corrected with the APR control. As a result, the Rawal device can reduce call backs and warranty issues, even on new sys Read More

Ventilation & Fresh Air The introduction of outside air with highly variable load creates the need for variable-capacity systems. APR Control enables the system to match capacity with changing load conditions. Local and national building codes require ventilation rate minimums to address potential health issues. Coronavirus (in 2020) just being… Read More

Many applications, including surgery suites, clean rooms, high-precision manufacturing, etc., have tight temperature and humidity requirements that can benefit from the addition of the APR Control. Read More

The APR Control provides (air conditioning circuit) modulation for humidity control, the benefit of extended runtimes, and the ability to maintain a system in a dehumidifying mode all serving Comfort and Indoor Air Quality. These factors allow simple single-stage/multi-stage DX systems to respond to a wide variety of operating conditions that all benefit space comfort. Read More

This webpage provides a comprehensive suite of resources to simplify and expedite the installation process of Rawal APR Control. Find essential materials lists, preparation guides, and even a free webinar offered by Rawal Devices to ensure a smooth and successful installation for your HVAC system. Read More