Digi-RTU For Packaged Rooftop Units
- Digi-RTU™ for rooftop units
- Digi-HP for heat pump units
- Digi-SPT for split units
Installation of Digi-Controllers shall result in substantial electricity and gas cost savings, improved thermal comfort and reduced noise level, enhanced system reliability and safety, and extended lifespan for HVAC equipment.
- Precision temperature and relative humidity control: Control temperature within ±2F and relative humidity below 65%.
- Reduced noise: reduce space noise level significantly and control noise level below 45db for typical office space.
- Energy Savings: Reduce electricity consumption by 30% to 60%.
- Peak Demand Reduction: Reduce peak energy demand by 20% to 50%.
- Heating Efficiency: Decrease heating energy consumption by 20% to 80%.
- Extended Equipment Lifespan: Increase equipment lifespan by over 5 years due to more efficient operation and reduced motor cycling.
- Lowered O&M Costs: Reduce operational and maintenance costs by 20% to 50%, primarily from fewer compressor and fan failures, and reduced filter changes.
- Utility Incentives: Many utilities provide substantial incentives for this technology and controllers. Consult your local utility energy program for details.
- PSP: Plug, set, and play.
- Retrofit existing equipment: No impact on current system operation and no interference with existing equipment.
- Replace existing equipment: Purchase base equipment and add Digi controller to the existing refrigeration equipment.
- Open Communication: Modbus ready for any supervisory system integration.
Digi Controllers for packaged units leverage AI technologies to optimize HVAC systems’ performance. Here are the key principles and advantages:
- Load Projection and Estimation Using AI: AI-based technologies predict future loads by analyzing historical data and real-time variables such as occupancy, weather, and usage patterns.
- Optimal Supply Air Temperature Setpoints: AI identifies the ideal temperature setpoints for both heating and cooling to maintain comfort and minimize energy consumption.
- Load and Heat Exchanger Based Compressor and Heater Control: AI algorithms manage the optimal sequences for turning compressors and heaters on or off based on real-time demand and maximizing active heat transfer surfaces.
- CO2 and Enthalpy-Based Outside Air Control: The system adjusts the intake of outside air using CO2 levels and outside air enthalpy, optimizing ventilation for both energy efficiency and indoor air quality.
- Capacity and Load Matching: AI algorithms continuously adjust compressor and fan speeds to dynamically match capacity with demand in real-time.
- Fan and Compressor Motor Dual Safety Protection: Motor dual safety technology and virtual pressure sensor can:
- Protect compressor motor from failure or damage due to over current, phase drop out, motor vibration, high and low pressure;
- Protect indoor fan and condenser fan failure;
- Protect indoor fan motor from failure or damage due to over current, phase drop out, and motor vibration;
- Eliminate conventional pressure sensor failure points and reduce maintenance cost.
- What are some benefits to Building Owners who install the Digi-RTU™?
The Digi-RTU™ provides improved building comfort with payback in less than three years. It also increases the life span of existing systems, improves comfort and reduces energy and O&M costs.
- Why do Facility Service Providers recommend the Digi-RTU™?
Facility Service Providers have an obligation to reduce energy consumption annually for their clients. Installing the Digi-RTU™ will ensure satisfaction of this requirement and significantly reduce O&M efforts and costs
- What important facts should ESCOs and Energy Consultants know about the Digi-RTU™?
The Digi-RTU™ has a potential market value of over $50 billion in the USA. This is the most significant opportunity for performance contracting and retrofits for the next 10 to 15 years.
- Why should MEP and BAS Contractors install Digi-RTU™?
Offering the Digi-RTU™ to existing customers can easily double revenue and will also create more long-term service contracts with new clients
- Why should CX Providers consider offering the Digi-RTU™?
The Digi-RTU™ provides the most energy efficient measures. It increases SEER ratings of existing equipment to the mid-twenties or higher, thereby increasing asset values to your customers.
- How does the Digi-RTU™ perform automatic demand response?
When there is an automatic demand response signal from the utility company, the Digi-RTU™ will run at minimum speed. When a specific demand limit value is given, Digi-RTU™ will modulate speed and on/off status to ensure power within the 15 minute moving window is less than the required value.
- In addition to the smart FDD, M&V, IAQ and Comfort & Control features, what makes the Digi-RTU™ stand out?
All Digi-RTU™s can be optimized and coordinated together in a single building through the Digi-SBM
- Does installing the Digi-RTU™ void any manufacturer warranties?
No! In fact, Bes-Tech will take over the existing warranty for you
- How does the Digi-RTU™ communicate with an existing BAS or T-stat?
The Digi-RTU™ receives T-stat analog signals directly and comes with an industry standard Modbus RTU communication protocol that is compatible with others using a communications bridge.
Appendix
Photo of Digi-RTU™
Installation Photo