VRF & VRV Air Conditioning Systems Training Course

Course Overview

Learning Objectives

• Analyze the operating principles and architecture of VRF and VRV air conditioning systems within the context of modern commercial and institutional buildings.
• Evaluate cooling and heating requirements and relate building load characteristics to appropriate VRF and VRV system configurations.
• Assess the functions and operating characteristics of outdoor units, indoor units, compressors, electronic expansion devices, branch components, and control systems.
• Apply appropriate principles for refrigerant piping, system zoning, branch selection, and equipment arrangement during the course.
• Evaluate heat pump and heat recovery VRF/VRV configurations and determine their suitability for different building applications.
• Analyze operating pressures, temperatures, refrigerant flow conditions, and system control parameters to assess equipment performance.
• Develop structured approaches for commissioning and verifying VRF and VRV system performance after installation or major maintenance activities.
• Diagnose common mechanical, electrical, refrigerant, communication, and control-related faults using systematic troubleshooting techniques.
• Evaluate energy performance and identify practical opportunities to improve VRF and VRV system efficiency through operation, controls, and maintenance.
• Design preventive maintenance strategies covering indoor units, outdoor units, filters, heat exchangers, refrigerant circuits, controls, and associated equipment.
• Assess system reliability and identify factors that contribute to repeated faults, reduced capacity, refrigerant imbalance, or unstable operation.
• Develop a practical action plan for improving the operation, maintenance, energy efficiency, and lifecycle performance of a VRF or VRV installation.

Who Should Attend

Learning Outcomes

• Explain the operating principles, system architecture, and major components of VRF and VRV air conditioning systems.
• Distinguish between heat pump and heat recovery configurations and identify suitable applications for each system type.
• Identify the functions of compressors, indoor units, outdoor units, electronic expansion devices, branch components, refrigerant piping, and control systems.
• Evaluate the relationship between building cooling and heating loads and VRF/VRV system capacity and configuration.
• Interpret key pressure, temperature, refrigerant flow, and operating data to evaluate system performance.
• Assess refrigerant piping arrangements, system zoning, branch configurations, and installation considerations that influence system reliability.
• Apply appropriate commissioning and performance verification procedures for newly installed or modified VRF and VRV systems.
• Diagnose common refrigeration, electrical, communication, sensor, control, and component-related faults using structured troubleshooting methods.
• Evaluate causes of inadequate cooling or heating capacity, abnormal pressures, refrigerant-related problems, excessive cycling, and uneven zone performance.
• Develop preventive maintenance routines for indoor and outdoor units, heat exchangers, filters, drainage systems, controls, and refrigerant circuits.
• Identify practical opportunities to improve energy efficiency through system settings, zoning, controls, maintenance, and operational practices.
• Prepare a comprehensive VRF/VRV system improvement plan covering performance, reliability, maintenance, energy efficiency, and operational priorities.

Course Outline