TheSmartHVAC - Daikin VRV System - Variable Refrigerant Volume Central Air Conditioning System (Cooling in summers and heating in winters) - Outdoor Unit ODU from 4 HP to 20 HP
VRV III Product Selection Piping selection - ppt video online download
How to Calculate VRF Additional Refrigerant Charge Jinowa Air Conditioner - YouTube
ASHRAE Standards 15 and 34 – Considerations for VRV/VRF Systems
DAIKIN VRV PIPE SIZING II VRF II DAIKIN - YouTube
"mt eco self connect plus"+ (one end expanded) vrf air conditioning grade copper tubes