VRF system in Hvac for Residential & Commercial Projects
A VRV (Variable Refrigerant Volume) or VRF (Variable Refrigerant Flow) system is a centralized air-conditioning system that uses one or more outdoor units connected to multiple indoor units. "VRV" is a trademark of Daikin, while "VRF" is the generic industry term used by manufacturers such as Mitsubishi Electric, LG Electronics, and Samsung HVAC. 1. VRV/VRF System Components Outdoor Unit Compressor (Inverter type) Condenser coil Condenser fans Refrigerant control system Main controller PCB Indoor Units Cassette type Ducted type Wall-mounted type Floor-standing type Refrigerant Piping Liquid line Gas line Branch selector/Y-joints Controls Wired remote controller Central controller BMS integration 2. Installation Procedure Step 1: Site Survey Before installation: Study architectural drawings. Calculate cooling load room-wise. Identify indoor and outdoor unit locations. Verify electrical power availability. Check pipe routing and drainage paths. Example: A commercial...