COURSE OVERVIEW:

Variable Refrigerant Volume (VRV) or Variable Refrigerant Flow (VRF) systems represent the pinnacle of modern HVAC engineering, offering unparalleled energy efficiency and localized climate control. This course provides a comprehensive exploration of the sophisticated inverter technology and refrigerant distribution logic that allow these systems to modulate capacity based on precise demand. Participants will examine the thermodynamic cycles and electronic expansion valve operations that distinguish VRV systems from traditional chiller or split configurations.

The scope of this training focuses on the intricate design considerations required for successful installation, including pipe sizing, oil recovery cycles, and the integration of heat recovery units for simultaneous heating and cooling. We will investigate the mechanical and electrical components of the outdoor units, focusing on compressor modulation and sophisticated control boards. The curriculum covers the critical maintenance protocols needed to preserve system efficiency, emphasizing the detection of refrigerant leaks and the calibration of sensory networks.

Coverage also includes the software tools used for system commissioning and the troubleshooting of complex communication errors between indoor and outdoor modules. By focusing on the environmental impact of refrigerant choice and the optimization of part-load performance, the course ensures that technicians can deliver sustainable cooling solutions. Through this rigorous study, attendants will gain the expertise necessary to design, install, and maintain large-scale VRV/VRF networks in commercial and residential high-rise applications.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

1. Explain the fundamental engineering principles of VRV and VRF technology.
2. Design complex refrigerant piping networks for multi-zone applications.
3. Select appropriate indoor units based on specific sensible and latent heat loads.
4. Manage the integration of heat recovery systems for simultaneous heating and cooling.
5. Utilize manufacturer-specific software for system sizing and selection.
6. Execute precision installation techniques including nitrogen-purged brazing.
7. Commission VRV systems by verifying refrigerant charge and control logic.
8. Troubleshoot communication errors and sensor malfunctions in the control bus.
9. Perform advanced diagnostics on inverter-driven compressors.
10. Implement a proactive maintenance schedule for filters, coils, and fans.
11. Conduct leak detection and refrigerant recovery in compliance with environmental laws.
12. Optimize system settings for maximum Seasonal Energy Efficiency Ratio (SEER).
13. Coordinate the integration of VRV systems with Building Management Systems (BMS).

TARGET AUDIENCE:

This course is designed for HVAC Engineers, Mechanical Contractors, Facilities Managers, Maintenance Technicians, and Building Designers involved in climate control systems.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximise the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.